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FILE NAME: Kohler (KOH) DATE: 1956 DOC#: KOH008 DOCUMENT DESCRIPTION: Bulletin - American Ceramic Society GT7 IO r.e February 10,1994 I hereby certify that the attached copies of the American Ceramic Society Bulletin, Volume 35,1956, are true and accurate copies, the original of which is maintained in the normal course of business at the American Ceramic Society, 735 Ceramic Place, Westerville, Ohio 43081. Christine Schnitzer Product Manager Ceramic Information Center 735 Ceram ic Place Westerville. Ohio 43081-8720 614 890 4700 TWX: 7101109409 [ | P LA IN T IF FS EXHIBIT * M /-07-53 IP P LA IN T IF F S I EXHIBIT *m fcsfe The American Ceramic Society BULLETIN A monthly publication devoted to the proceedings of The Society, discussions of plant, technical, scientific, art, and cooperative research problems. Volume 35, 1956 Charles S. Pearce, Editor James S. Welch, Managing Editor Emmoline R. Jamra, Editorial Assistant Mary Weigelt Rohr, Editorial Assistant Charlotte B. Burgess, Editorial Assistant Committee on Publications: C. H. Hahner, Chairman; W. R. Kerr, J. O. Everhart, and E. P. McNamara Contributing Editors: Officers of Industrial Divisions and Sections (For names, see back of Title Page) Executive, Editorial, and Advertising Offices: 4055 North High Street, Columbus 14, Ohio Publication Office: 20th and Northampton Streets, Easton, Pa. M em b ersh ip in T he A m erican Ceramic Society brings to yon: The Ceramic Bulletin, a monthly publica tion devoted to news of The Society and of its members, descriptive articles and papers on the application of funda mental research. Its advertising pages provide a high-prestige media for reach ing ceramists in every branch of the in dustry. The Journal, .depository of original research in the ceramic field, an archive of scien tific knowledge. When something new is developing in ceramic science you'll find it presented authentically, accu rately and first in The Journal. Ceramic Abstracts, .a monthly report on all th at is published on ceramic technology. The literature of every nation is followed closely to assure that all material of ceramic significance is brought to your attention. Publication.. Acceptance of a scientific paper for publication by The Society is a mark of high recognition, editorial review committees in specialized fields assur ing rigid standards of technical excel lence. Local Section..In 20 centers of ceramic operations in the United States mem bers of The Society hold frequent meet ings to hear papers, discuss matters of common interest and enjoy good fel lowship. Meetings. .Ceramists of the world gather for the Annual and Fall Meetings of The American Ceramic Society and its Divisions. . .for the presentation and discussion of papers on ceramic science, for the exchange of ideas, and for visit ing with other ceramists. Highest awards of the ceramic world are pre sented at these meetings, in recognition of achievement and service in the ce ramic field. Enjoy the prestige of membership in your industry's scientific society, plus the obvious advantages of keeping up to date on ceramic developments. The American Ceramic Society 4055 N . High Sc. COLUMBUS 14, OHIO vrOL. 3o, No. 11 (19501 29 Membership Rosier The American Ceramic Society -*tis R oster of m em bers is published only for the use of members of The American Ceramic Society. Listings are in alphabetical ier. A separate R osier for the N ational In stitu te of Ceramic Engineers, showing grades of mem bership, is on pages R-171 to R-225 his issue. New m em bers received too late to be included are listed in the Addenda on page R-120. These listings give the m em ber's preferred mailing address. Where this is not his business address his com pany connection is shown parentheses. Divisions and other Society affiliations are indicated in parentheses following each name, in accordance with the code en below. T he absence of any such designation indicates th at the m em ber is from outside the United S ta te s or a student member, ither of which has Division affiliation. B --Basic Science Division D --Design Division E-- Enamel Division G-- Glass Division M --M aterials and Equipment Division R--Refractories Division S--Structural Clay Products Division W-- White Wares Division X-- No Dlvisioa affiliation F-- Fellow of T he Am erican Ceramic Society J --Junior Member I-- National In stitu te or Ceramic Engineers A 23 EY. R. G. (G) General Refractories Co. 1320 Locust St., Philadelphia 2, Pa. 3BOTT. Gordon H. Reck Enamel (Pty.) Ltd.. Box 77 Industria. TVL Union of South Africa 3E, Tosio 1001. Xami-ikegami-cho, Ota-ku Tokyo, Japan (Tokyo Shibaura Electric Co., Ltd.) 3ERN ETH Y . Lonnie L. (B t) Argonne National Lab. D22-2 Metallurgy Box 290. Lemor.t. 111. BINGDON POTTERIES. INC. / r . M. Lewis) 301 N. Main St. ngdon. III. L IS. M arvin E. >.W) Sentry 5anitary Corp., Box 427 M annington. \Y. Va. BRAMSON. Isaac Av. Copacabana, 959-Apto. 902 Rio de Janeiro. 3 rat:". (Klabin Irmaos 4 C:a.) BRILLE. A. Villa San Miguel Srewery, ir.c.. 1112 Aviles Manila. Philippines CCOUNTIUS. Oliver E. (R) 118 E. Carter St.. Sierra Madre. Calif. (Aerojet-General Corp.) CHA UER. L. A. (S) Mateo Corp.. East Canton. Ohio CHUFF. Charles E. (W ) 839 S. Balias Rd.. Kirkwood 22. Mo. (Certain-Teed Products Corp.) CME BRICK CO. (George Puls) Box 423. Fort W orth. Texas vC SPARK PLUG DIV., GENERAL MOTORS CORP. (Karl Schwartrwalder) Flint 2. Mich. iDAMS CLAY PRODUCTS CO. (James A. Cunningham) Box 226 Martinsville. Ind. 'D a m s . David E.. Jr. (W) 830 Spring St., Latrobe, Pa. (C arborundum Co.) 'D a m s . Earl E. (\V) National Plumbing Pottery. Inc. Zanesville. Ohio i DAMS. Edward M. (S) Murray Tile Co.. Inc. Cloverport, Ky. 'D A M S, Milton (G) '9 W. Stretcher S t, Toledo 8. Ohio libbey-Owens-Ford Glass Co.) 'to ..a tS . P. Bruee (G) Coming Glass Works Research and Development Corning. N. Y. Vol. .10, Mo. 10 (1956) ADAMS, S. L. (G) Joseph E. Seagram 4 Sens. Inc. Seventh St. Rd.. Louisville 1. Ky. ADAMSTON FLAT GLASS DIV., ROLLAND GLASS CO. Box 631, Clarksburg, W. V. ADCOCK, Albert S. (W I) American Radiator 4 Standard Sanitary Corp., 6920 Franklin Avc. New Orleans 22, La. ADCOCK, Lawrence \V.. Sr. (W ) 362 E. Main S:.. Logan. Ohio (Logan Pottery Co.) ADCOCK. Lawrence \V., Jr. (\V) 1547 Empire Rd.. Wickiiffe. Ohio (Clevite Corp.) ADDERLEY, James R. 42 Church St., Bricricy Hill S. Stafford. England ( E. J. 4 J. Pearson Ltd.) ADERHOLD, George H. (W ) Saxonburg Ceramics, 3ox 100 Saxonburg, ?a. ADLER. Arthur (R) Alloy Metal Powders. Inc. 233 Eagic St.. Brooklyn 22. X. Y. AFFLERBACK. Harry (E) R.R. 4. Frankfort, Ind. (Ingram-Richarascn. Inc.) AGARWAL. Gopal Mohan 104 E. ISth Avc.. Coiumbus 1. Ohio A. G. DER GERRESH EIM ER GLASHUTTSNW ERKE (L. Breuer) DusscJdorf-Gcrresheim, Germany AGRON. .Albert M. (S) Pfaudter Co.. Taylor St., Elyria, Ohio AGUILAR. L. M. (E) Ferro Enamel de Mexico. S. A. Calle Oriente 171, No. 450 Mexico 14, . F., Mexico AHEARN, V. P. (M) National Industrial Sand Assn. Munsey Bldg., W ashington 4, D. C. AKAM, J. W. (S) Natco Clay Products. Ltd Aldershot, Ont., Canada AKMORAN. Miss Huban 398 Marlborough St.. Boston. Mass. AKRON PORCELAIN CO. (F. W. Butler) Akron 14. Ohio ALBERS-SCHOENBERG. Em st (W ) I3-B-3 Redfield Village, Menschen, N. J. (General Ceramics Corp.) ALBERT. Joseph (W) 1868 Windemere Dr.. N. E. Atlanta. Ga. fAlbert Pottery) ALBERTALLI. Stephen L. (G) Coming Glass Works. Harrodsburg, Ky. ALBERY. D. F. (SFI) 1433 23rd St. N. W .. Canton 9, Ohio (Stark Ceramics. Inc.) ALBRECHT. Emst Kcramische Fachsehule Hoehr-Grenzhausen/b Koblenz, Germany ALCOCK, Ronald H. " Ferrum " Espaa 402--600, Aveilanctla Buenos Aires. Argentina (Ferrum. L. A. dc Ceramics y Mcmlurgia) ALDEN, Charics E. (G) 3427 Heather Downs Blvd. Toledo 14, Ohio (Kimble Glass Co.) ALELUIA. Joao C. F. Av. Araujo E. Silva 59 Aveiro, Portugal (Fabricas Alcluia) ALEXIUS, Ca.-i Axel Xarhunkatu 23. Xarkula. Finland (A. Ahlstrom Oy. Karhuia Bruk) A LEX A N D ER, A. E. (G) 3uchanan Apts. 3-D. *35 E. 47th St. New York 17. N. Y. (Tifranv d: Co.) ALEXANDER. Jobe B. (M) Southwestern Portland Cement Co. 1034 W iishire 3'.vJ. Los Ar.geies 17. Caiif. ALEXANDER. John M. (M I) 2376 Hamilton Avc. North Beilmort. N. Y. (Swindell-Dressier Corp.) ALGEMENE VERENIGING VOOR De NEDERLANDSE AARDEWERK EN GLASINDUSTRIE (W. J. Bollen) Haagweg 139. Rijswijk, Netherlands ALGER, Ferris E. (G) Old York Rd., New Hope Bucks Co.. Pa. (Consultant) ALLEGHENY LUDLUM STEEL CORP. (Paul . Perry) Brackenridge, Pa. ALLEN. Alfred W. (RF) Ceramic Engineering Dept. University of Illinois, Urbana, III. ALLEN, Ben (G) Coming Glass Works, Coming, N. Y. ALLEN, Ralph (W ) 1234 Paddock Hills Ave. Cincinnati 29, Ohio (Briggs Mfg. Co.) ALLEN, Richard L. (R I) E. J. Lavino & Co., Box 363 Newark. Caiif. ALLEN, Robert G. (R) Robert G. Allen Co., Box 110 Mechanicville. N. Y. ALLEN. W alter C. (B) Radio Corp. of America Chemical & Physical Lab. 413 S. Filth Sc., H arrison, M. J. R oster 1 .L E X , W arren W., Jr. (S i Hydraulic-Press Brick Co. South Park, Ohio LLIANCE W ARE, LTD. (R. E. Strain) 3ox 550, Vancouver, B. C., Canada .L iE G R O . Lt. JG Richard (X J) VA-JS. F .i'.O., New York, N. Y. I iX. Adrian G. (R ) elle Memorial Institute su King Ave., Columbus 1, Ohio LLMAN. Orin K. (G) Kimble Glass Co. Owens-Illinois Technical Center 1700 N. Westwood Ave.. Toledo l, Ohio LT, Leslie R. (SI) 5-17 Simon St,, Hayward, Calif. (K raftile Co.) LTMANN, Benon G. (B) 16700 Cypress Way, Los Gatos, Calif. (K aiser Aluminum 4 Chemical Corp.) LTON B RICK CO. (M orris P. Hall) Box 25, M aryland H eights, Mo. LTSCHULER, Otto (W ) 27t H aw thorne Ave., L anghoroe, Pa. (W enczei Tile Co.) LUMINIUM LIM ITED SALES. INC. (R . M. M athieson) 620 Fifth Ave. New Y ork 20, N. Y. LUMINUM CO. OF AMERICA fH . P. Bonebrake) 1501 Alcoa Bldg. Pittsburgh 19, Pa. MERICAN COLLOID CO. (Paul Bechtner) Merchandise Mart Plaza, Rm. S12 Chicago 54, 111. MERICAN ENCAUSTIC T IL IN G CO., INC. (Robert A. Williams, Jr.) 1000 N. Cannon Ave., Lonsdale. Pa. MERICAN GAS ASSOCIATION (C. G. Segeler) 420 Lexington Ave. New York 17, N. Y. MERICAN LAVA CORP. (R . A. McGinnis) Cherokee 31vd. i Mfgrs. Rd. vttanooga 5. Tenn. I 'CAN N E P H E L IN E LTD. . .. R. Oeeth) 25 K ing St. \V\. Rm. 2520 Toronto. Ont.. Canada M ERICAN OPTICAL CO. (A. H. Bennett) Research Center, Southfcridge. Mass. MERICAN PORCELAIN E N A M E L CC. (Robert Long. Sr.) I2S5 E. K eating Ave. Muskegon 26. Mich. MERICAN POTASH & C H E M IC A L CORP. (R. M. Curts) 99 Park Ave.. New York. N. Y. M ERICAN RADIATOR * STANDARD SANITARY CORP. (Jam es S. Goodman) 824 E. Broadway Louisville 4. Ky. M ERICAN SMELTING 4 R E F IN IN G CO. (D . K. W right) 120 Broadwav, New Y ork S. N. Y. M ERICA N W IN D O W GLASS CO. (A. S. Crandon) 20th Floor Farm ers Bank Bldg. P ittsb u rg h 22. Pa. M E S. R. N. (RI) 10718 S. Morgan St.. Chicago 42, III. (U . S. Steel Corp.) M E S . Robert G. fW ) 69 Jefferson Ave.. Cresskill, N. J. (B. G. Corp.) M IN . R. B. Alembic Chemical Works Co., Ltd. P . O. Chemical Industries Baroda 2. India 1MMERMAN. J. H. (R I) 202 Scribner, DuBois, Pa. 'V o rth American Refractories Co.) V lEIN, Alan G., Box 16S9 .orgia Institute of Technology Atlanta. Ga. ANCHOR HOCKING GLASS CORP. (W illiam V. Fisher) Lancaster, Ohio 7ol. 35, No. 10 (1956) ANCIZAR-SORDO. Jorge Laboratorio Qumico Nacional Ministerio de Minas y Petroleos Apartado 2577. Bogota. Colombia ANDERSON. Harlan U. 1424 Federal Way, Salt Lake City, Utah ANDERSON, Harry L. ;R !) Republic Steel Corp. Youngstown 1, Ohio ANDERSON, Herber: H. (G) 401 N. Main St., Par: Allegany. Pa. (Pittsburgh-Coming Corp.) ANDERSON, Orson L. (G) Bell Telephone Labs., Murray Hill, N. J. ANDERSON, R. E. (W ) Robertson Mfg. Co., Box 848 Trenton 5. N. J. ANDERSON, R. H. (S) Robinson Clay Product Co.. Box 545 Dover, Ohio ANDERSON, Robert E. (W ) Iroquois China Co., 2220 Milton Ave. Syracuse 9, N. Y. ANDERSON. Robert R. 185 Cynthia Dr.. Pleasant Hill, Calif. ANDERSON. Rupert C. (W ) Valley View, R. R. 10 New Brighton, Pa. (Mayer China Co.) ANDERSON. Scott (G) Anderson Physical Laboratory 609 S. Sixth St.. Champaign, III. ANDERSON. William B. (E) Titanium Pigment Corp., 1i 1 Broadway New York 6. N. Y. ANDREASEN. A. H. M. (Honorary) Oster Voldgade 10 Copenhagen K., Denmark (Royal Danish Technical University) ANDREWS, Andrew I. (E F I) University of Illinois 204 Ceramics Bldg., Urbana, 111. ANDREWS. Clifford M. Ferro Enamel S. A.. Caixa Postal 2948 Sao Paulo. Brazil ANDREWS. Ray (G) B. F. Drakenield 4 Co., Ir.c. Box 519, Washington. Pa. ANTAKI. Emile Ferrum S. A. ce Cermica & Metalurgia Espaa 402/600 Aveaneca. Argentina ANTHONY. Benjamin F. (R) Ferro Engineering Co. 1400 Hanna Bldg.. Cleveland 15, Ohio ANTHONY. George H. (R) 41 Marion Dr., Poland. Ohio (Youngstown Sheet 4 Tube Co.) ANTHONY. H arry L.. I ll (R) Mellon Institute. 4400 Fifth Ave. Pittsburgh 12, Fa. ANWYL. Robert H. (S) Lisbon St.. Gienmoor MC-22 East Liverpool. Ohio APT. Elmer E. (S) A. C. Ochs 3rick & Tile Co. Springfield. Minn. ARANGO. G. Botero Balboa 63-12. Medellin. Colombia (Cristalera Peldar S. A.) ARCHBOLD. Walter H.. Jr. (MI) 125 Smallwood Dr.. Snyder 21. N. Y. (Electro Refractories 4 Abrasives Corp.) ARCHIBALD. W. A. British Iron 4 Steel Research Assn. 140 Battersea Park Rd. London, S. W. 11, England ARCHIE. Chad L. (S) Archie Structural Products Co. P. O. Drawer 212. C orinth, Miss. ARCHIE. Chad L.. Jr. (SJ) Archie Structural Products Co. P. O. Drawer 212, C orinth. Miss. ARENSBERG. Francis L. (R) Vesuvius Crucible Co., Box 8275 Swissvale, Pittsburgh 18. Pa. d'ARGENTEL'IL, Comte L. de Meeus N. V. Ceramique Maastricht Hoge Barakkenstraat 6 Maastricht. Netherlands ARKETEX CERAMIC CORP. (George W. Shoemaker) 6 N. W alnut St.. Brazil. Ind. ARMCO STEEL CORP. (R. S. 3urns) Research Library, Middletown, Ohio ARMISTEAD. W. K. (G) 65 E. First St.. Coming, N. Y. (Coming Glass Works) ARMSTRONG CORK CO. (E. C. Emanuel) Research 4 Development Center Lancaster, Pa. ARMSTRONG. Leiand R. (R I) 27 Morgan Ave., Washington, Pa. (Findlay Clay Products Co.) ARNOLD. Howard C. (E F I) 76 Sundish Blvd.. Pittsburgh 28, Pa. (Federal Enameling 4 Stamping Co.) ARN OLD, Robert M. (B) Arnold Engineering Co.. Marengo, 111. ARNOLD, Russell E. (SF) Box E. E. Akron Station. Akron 5, Ohio (Robinson Clay Product Co.) ARNOLD. Thomas M. (W I) Red Wing Potteries, Inc. Red Wing. Minn. ARRANCE. Krank C. (W I) Coors Porcelain Co.. Golden, Cola. ARRANDALE. Roy S. (G) Thatcher Glass Mfg. Co., Inc. 1901 Grand Central Ave., Elmira, N. Y. ARRAS. George (E ) Quadrangle Mfg. Co.. 22 S. Peoria St. Chicago 7. 111. ARSEM. William C. (B) 7829 Old Chester Rd.. Bcthesda 14, Md. ( Office of Naval Research) ARTHUR. Edwin P. (G) 3110 Las Faldas Dr., Fullerton, Calif. (Beckman Instruments. Inc.) ARTIS. William E. (D) Nebraska State Teachers College Chadron. Nebr. ARW IXE. A. S. CR) Refractory 4 Insulation Corp. po rt Kennedy, Pa. ASDELL. Bernard X. (W ) Edgar Division Minerals 4 Chemicals Corp. of America McIntyre. Ga. A S H E S. John W. ;'G) Box 382. Corning. N. Y. (C om ing Glass Works) ASHWORTH. GEORGE L. & BROTHERS. LTD. (W . Gordon Evans) Broad Street Works Hanley, Stoke-on-Trent. England ASQUITH. Milton Redfearn Brothers. Ltd. Monk Bretton Glassworks Bamsiev, England - - ASSOCIACAO BRASILEIRA DE CERAMICA Praca Coronel Fernando Prestes. 110 ( EriiScio do I.P.T.) Sao Paulo. Brazil A TW ELL. George D.. Jr. (S) Bickerstaff Brick Co. Box 1178. Columbus,. Ga. AUER. Konrad F. Netstal, Kt. Glarus, Switzerland (Kalkfabrik Netstal Ag.) AUKLAXD, Merrill F. (S) Ohio University, Dept, of Geology Athens. Ohio AULT. Neil N. (BI) Norton Co., 1 New Bond Si. Worcester 6. Mass. AUSKERN, Allan (BJ) W estinghoose Atomic Power Div. Box 1468. Pittsburgh 30. Pa. AU STEN AL, I N C (R. C. Feagin) 224 E. 39th St.. New York 16. X. Y. Roster 3 AUSTERM AN, Stanley B. (B) 7006 Andasoi Ave., Van Nuys. Calif. I Atomics International) AUSTIN. Arthur 0. (B) Box 109, Barberton, Ohio (A. O. Austin Co.) A '"S T IN , Charles E. (.3) Consolidated Brick Co. iorseheads, N. Y. A U STIN , Chester R. (R F I) Oxygen Converter Dept. Kaiser Engineers 1924 Broadway-- Kaiser Bldg. Oakland 12. Calif. A U STIN , G arth F. Gen. Del., Alfred. N. Y. A U ST IN . Jam es Bliss (B F) United States Steel Corp. Rm. 2401. S25 W illiam Penn Pt. P ittsburgh 20, Pa. A U ST IN . Lewis M. (G) 2334 Middlesex Dr., Toledo 6, Ohio (Owens-Illinois) AVERY. Robert C. Box 826, Alfred, N. Y. A V R IL . Jack J. 8804 Frances Folson Rd., S.W. T acom a 99, Wash. A Y D ELO TT. Elliott C. (S I) W averly, Pa. (International Salt Co.) AZEVEDO, Marcello R. V. de (I) Caixa Postal 2818, Sao Paulo, Brazil (Ceramica Sanitaria Porcelite S /A ) B BAAB, Kenneth A. (R I) 628 Sixth Ave., Bethlehem, Pa. (Bethlehem Steel Co.) BAARSON, Robert E. (M) Armour Chemical Div. Flotation Research Section 1355 W. 31st St.. Chicago 9. III. BABA. P-.ui O. 158 Pennington St., Elizabeth 2, X. J. JOCK. Clarence L. (GF) .718 Potomac, Toledo 7. Ohio (Owen-iilinois) B A 3C 0C K , M. G. (G) 618 Kenilworth Dr.. Pittsburgh 34, Pa. (Pittsburgh Plate Glass Co.) BA3COCK. Paui R. (W I) Frenchtown Porcelain Co. Frenchtown. N. J. BABCOCK 4 W ILCOX CO. (J. E. Brinckerhorf) 161 E. 42nd St.. New York 17. N. Y. BACH, Carl H. (S) TuthiU Bldg. Material Co. 54S E. 103rd St., Chicago 28. 111. BACH. W illiam E.. Jr. (M) 7712 Fontana P rairie Village 15. Kans. (A lum inum Co. of America) BACHER. Holland R. (W ) Rock Tavern. N. Y . (W hite Cloud Farms. Inc.) BACHMAN. Charles D. (G) 200 Shelburne Rd., R. R. 2 Millville. N. J. (A rm stro n g Cork Co.) BACHMAN, George S. (G) l i t W. Washington St., Sbeibyviile. Ind. (Pittsburgh Plate Glass Co.) b a c h m a n , James r . (R) , United States Steel Carp. Applied Research Lab. Monroeville, Pa. BACHMAN, Wheeler Carr (W) R JL S. Grafton. W . Va. (C arr China Co.) P 'C O N . Frank R. (GF) ]1S3 Darlington Rd., Toledo 6, Ohio vOwens- Illinois) BACON. James F. (G) 130 Pritchard Ave.. Coming, N. Y. (Coming Glass Works) VOL. 35, No. 10 (1956) BADGER, Alfred E. (GF) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio BAER. G. M. (K) R. C. Remmey Sor. Co. Hcdlcy St. it Delaware River Philadelphia 37, ?a. BAGBY, Richard A. (3 J) 15 Allerton Rd., Dayton 5, Ohio (Wright Air Development Center) BAGLEY. Norman H. (W) 206 Central Ave., Caldwell, N. J. (Bell Telephone Laboratories. Inc.) BAILEY. Floyd (E l) 840 S. Sixth Ave.. Kankakee. III. (A. O. Smith Corp.) BAILEY, Henry R., Jr. (M) Goiding-Keene Co. 226 Main St., Keene, N. H. BAILEY. James (GF) 95 Steele Rd., West H anford 7. Conn. (Flax Corp.) BAILEY. Richard J. Doulton Fine China Ltd. Royal Doulton Potteries Burslem, Stoke-on-Trent. England BAIN, Andrew R. The Whins, 26 Park Terrace Stirling, Scotland BAIN, R oben M. (X) Eastern Montana College of Education Billings, Mont. BAIR, George J. (G F i) Technical Products Division Coming Glass Works, Coming, N. Y. BAKER. Arvid H. (G) 300 Catlin Ave., Port Allegany, Pa. (Pittsburgh Corning Corp.) BAKER. Burton E. (R) 15 Gwynlake Dr.. Baltimore 7, Md. (General Refractories Co.) BAKER, Daniel R. 606 W. Columbia. Champaign, III. BAKER. D. Martin (W ) 1025 Gardner Blvd., Barberton, Ohio (Ohio Brass Co.) BAKER. Dunbar J. (R) 514 W. High St.. Womelsdorf, Pa. (North American Refractories Co.) 3 AKER, Houston R. (G) Sharo-Schurtz Co 301 z-incoin Ave.. Lancaster. Ohio BAKER. Robert L. (G) 46 Highland Ave.. Wellsvijle. N. Y. (A ir Preheater Corp.) BAKER, Theodore C. (G) RJU 1, Wayne, Ohio (Owens-Illinois) BALDAUF. Earl E. (W I) Flamingo Tile Corp-, Box 112 Lake Wales. Fla. BALDRY, Stanley F. T. E. R. G. Industrial Corp.. Ltd. Luton Rd.. Dunstable. Beds London, England BALDWIN, W. J. (W) Titanium Alloy Mfg. Div., NatioDal Lead Co.. 3ox C Bridge Station, Niagara Fails, N. Y. BALINA, Mareelo O. C.A.P.E-A.. Lanus-KM 7 C Grai., Belgraso Buenos Aires, Argentina BALINKIN. Isay (W) University of Cincinnati Cincinnati 21, Ohio BALINT, Louis J. (B) 14185 Story Rd,, San Jose 27, Calif. (Kaiser Aluminum & Chemical Corp.) BALL, Albert L. (R) Bay State Abrasive Products Co. Wcstboro, Mas*. BALL BROTHERS CO,, IN C Muncie. Ind. BANERJEE. A. Bebar Firebricks & Potteries Ltd. P. O. Mugma, Disc. Manbhum. India BAQUE. Harold W. (GI) IS It Mohican Dr., Pittsburgh 28, Pa (Corhart Refractories Co.) BAR3A, Charles E., Jr. (M) Creek Rd.. R. R. 1. Doyiestown, Pa. (Sales Engineer; BARBER. Fred O (M l 783 Evening S:.. Worthington. Ohio (H arrop Ceramic Service Co ) BARBER, Stephen >V. (G) Owens-Illinois 1700 N. Wcstwcod Ave., Toledo 1, Obi-, BARBOUR. David J. (W F) 345 E. Highland Dr., Zanesville, Ohio BARBRE, Norris H. (S) Mellon Institute, 4400 Fifth Ave. Pittsburgh 13. ?a. BARDSLEY. James J. 404 Spruce St., Appalachia, Va. BARIUM REDUCTION CORP. (K. O. Priddy) South Charleston 3, W . Va. BARKER. RoUand C. (G) Glass Mfg. Dept., Lamp Div. General Electric Co., Nela Park Cleveland 12, Ohio BARLETT. Heien 3. (BF) A C Spark Plug Div., General Motors Corp.* Flint 2, Mich. BARNA. Gordon L. R. R. 7. Box 375. Tacom a. Wash. BARNES. Harry H. (BI) W ah Chang Smelting & Refining Corp. Herbhill Rd.. Glen Cove. N. Y. BARNES. Lehman W. 434 S. Second S :,, Sm itheid, N. C. BARNES. Wilson R. (R) Corhart Refractories Co. 16th it Lee Sts.. Louisville 10, Ky. 3ARNET. Joaquin Cermicas K'.i-per A partado 1243. H avana, Cuba BARNEY. Ronald N. (BJ) 5487 Cobb Dr.. D ayton 3. Ohio (W right Air Development Center) 3ARON. Jean Laboratoire de Controle des produits Rcfractaires IS. Place Carr.ot Nancy (M eurthe e: Moseiie) France BARR. Harold N. (3 ) Glenn L. M artin Cc. Nuclear Eng. Div. --710 Baltim ore 3, Md. BARR. H arry (M ) Consolidated Feldspar Dept. International Minerals 4 Chemical Corp. Box 1843. Trenton 7. N. J. BARR. Robert A. (M ) 867 River Rd., Fair Haven. N. J. (Carborundum Co.) BARR. Seymour J. (S) _ Shenandoah Brick it Tile Corp. Box 32. Winchester, Va. - - BARRETT. E. L. (R) Chas. T aylor Sons Co. South Shore. Ky. BARRETT. Harvey N.. Jr. (R> 2233 St. James Parkway Cleveland Heights, Ohio (Basic, Inc.) BARRETT. Maurice (Life) 8 Oxeliffe Rd. Morecambe and Heysham, England BARRETT. W ayne E. (S) R. R. 1, W est Des M oines, Iowa (O skaioosa Clay Products Co.) BARRINGER. Lawrence E. (Honorary. W FI) 23 F ro n t St.. Schenectady 5. N. Y. (General Electric Co.) BARROWS PORCELAIN ENAMEL CORP. (W oodrow Carpenter) Langdon Rd. 3c Penn R. R. Cincinnati 13, Ohio R oster 5 BARTA. R. Czechoslovak Ceramic and Glass Society Technicka ul.e.5. Praha XIX. Czechoslovakia BARTHO LO M EW . George A. (St L'nited States Steel Corp. App'icd Research Lab. Monroeville. Pa. iRTHOLOMEW , George L. Sox 1009, Alfred. X. Y. 3ARTLETT-COLLINS CO. (Harrison I. Bartlett) Box 519 Sapulpa. Okla. BARTLETT. E. E. (G) 4587 Boca Chica Blvd. Brownsville, Texas (Bartlett-Collins Co.) BARTLETT. Harrison I. (G) Bartlett-Collins Co.. Box 519 Sapulpa, Okla. BARTON. Jam es E. Box 2435, Clemson College Sta. Clemson, S. C. BARZAGHI, Luciano Ceramics Sao Caetano Rua Roa Vista. 133-4* andar Caixa Postal 273, Sao Paulo, 3razil BASIC. IN C . (H . C. Lee) 845 H anna Bldg.. Cleveland 15. Ohio BASLER. Wayne G. (XJ) 1504 N. Belt W est. Belleville. III. (Aluminum Co. of America) BASS. X. W. (R) Brush Beryllium Co., 4501 Perkins Ave. Cleveland 5, Ohio Ba s s e t t , Leon b . (3 ) Box 234, Alfred, N. Y. (State University of New York. College of Ceramics) BASSETT. Ray E. (S) Acme Brick Co.. 3ox 425 For: Worth 1. Texas BASSETT. Robert (S) Central Commercial Co. Darlington, Beaver County, Pa. ITEM AN. L. A. (E) E ljer Co.. Er.amel-Ware Div. Salem, Ohio BATES. A. Allan CB) Portland Cement Assn. 35 'A*. Grand Ave., Chicago 10, III. BATES. Charles E. (S) 123 W alr.ut St., Brookvillc. Pa. (H anley Co.) BATES, E dgar A. (Bl 4506 T oni Lane. San Diego 15. Cali(. (C o n v air) BATES. Frank O. (W ) Solar Mfg. Corp., E. 46th St. at Seville, Los Angeles 53, Calif. BATES. P. H. (Life. XF) 1620 Seventh St., N., St. Petersburg, Fla. BATES. W. S. (R) Spectrochcm ical Labs.. Inc. 1010 W ood St.. Pittsburgh 21. Pa. BATESON, H. Marshall 68 Spring Grove Loughton. Essex. England (Thermos. Ltd.) BATESON, Sydney (G) Duplate Canada Ltd. Oshawa. Ont., Canada BATRUK. Stanley /.. Jr. (E) New Jersey Zinc Co. 160 F ro n t St.. New York 38, X. Y. BATTISTA, George Box 747, Alfred. N. Y. BAUER. Richard M. (M) 728 St. Louis Ave.. Zanesville, Ohio (Mosaic Tile Co.) BAU ER. W olf G. (S) 5622 Seaview Ave.. Seattle 7, W ash. (Consulting Engineer) ..a U L E K E . M aynard P. 6910 Meadow Brook Blvd. M inneapolis 26, Minn. BAUM, Frederick J,, Jr. (B) E. I. du Pont de Nemours it Co.. Inc. Experimental Station. Chemical Dept. Wilmington, Del. BAUMANN. Henry N,, Jr. (BFI) 1275 Wyoming Ave. Niagara Fails. N. Y. (Carborundum Co.) BAUMER, Leon N. (R) 240 Rockingham Rd., Pittsburgh 38, Pa. (Mellon Institute) BAUMLER. Karl (G) Pittsburgh Corning Corp.. Sedalia, Mo. BAUSCH 4 LOMB OPTICAL CO. (Murray Scott) Rochester 2, N. Y. BAXTER, Allen J. (GJ) Bailey Creek Rd., R. R. 3 Corning, N. Y. (Corning Glass Works) BAYLISS. John M. CRJ 629 Frederick St., Lancaster, Ohio (Mullite Refractories Co.) BAY STATE ABRASIVE PRODUCTS CO. (O. S. Buckner) Westboro, Mass. BEAL, D. S. (E) 15 Oak Dr., Poland, Ohio (Youngstown Sheet it Tube Co.) BEALS. M. Dougias (BI) Research Lab., Titanium Division National Lead Co., South Amboy, N. J. BEALS. Robert J. (W I) 109 Ceramics 31dg. University of Illinois, Urbana, III. BEAM. James R. (W F I) 300 Ruth Ave.. Mansheld. Ohio (Ceramic Engineering Service) BEARD. Clinton L. (W I) Globe-Union. Inc.. 900 E. Keefe Ave. Milwaukee 12, Wise. BEARDSLEY. Canton J. (\V) 666 E. Findlay St.. Carey. Ohio (Porcelain Products. Inc.) BEASLEY. Dennis R. (G) 659 McCuilogh St.. Morgantown, \V. Va. (Struc-Tite Fibers. Inc.) BEASLEY, Robert M. (G) Coming Glass Works, Corning. N. Y. BEATHARD, Robert X. (W) General Tile Corp., Box 38 El Segundo. Calif. BEATON. Orville (W ) Gem Clay rorm ing Co.. Sebring, Ohio BEAVER. Wallace W. (M ) Brush Beryllium Co., 4301 Perkins .Ave. Cleveland 3, Ohio BEAZELL. William H. (G) American W indow Glass Co. 20th Floor. Farm ers Bank Bldg. Pittsburgh 22. Pa. BEBBINGTON. Philip J. (E) 2 Barker Lane. Saxonvillc. Mass. (A rthur D. Little. Inc.) BECHTNER, Paul (M) American Colloid Co. Merchandise Mart Plaza, Room 813 ' Chicago 54. 111. BECK, Elmer W. (M) Ceramic Supply Co., Crooksville, Ohio BECK. J. Howard (M) BTU Engineering Co. 440 Somerville Ave. Somerville 43, Mass. BECK, Norman R. (G) Carr-Lowrey Glass Co. Baltimore 3. Md_ BECK, W arren R. (B) Minnesota Mining 4 Mfg. Co. 900 Fauquier Ave. St. Pan! 6, Minn. BECKEMEYER. Harry J. (W) Unirersal-Rundle Corp. W . Keith McAfee Lab., Box 1268 Mahoningtown, Pa. BECKER. Bruce N. (G) 602 N. Marshall St., Lancaster, Pa. (Radio Corp. of America) Vol. 35. No. 10 (195(5) DECKER, Martin G. (S) Brookbavcn Pressed Brick 4 Mfg. Co. Box 342. Brookbavcn, Miss. BECKER, W alter D. (S) Brookbavcn Pressed Brick & Mfg. Co. Box 542. Brookbavcn. Miss. BEECH ER. Milton F. i.RFi) 50 W oodland Rd., Holden, Mass. (N orton Co.) UFFI pR L S fW) Reynolds Metals Co.. 2500 S. Third St. Louisviite 1. Ky. 3EERM AN. Henry P. (B) Philco Tube Laboratory, Church Rd. Lanscale, Pa. BEERS. Roland F. (B) Box 1019, Troy, N. Y. (R oland F. Beers. Inc.) BEETON. Earl E. (GI) 1604 Lincoln St.. Bethlehem. Pa. (W estern Electric Co.) BEGGEROW , Charles W. 309 Osceola Ave., Lake Wales. Fla. BEG1EN. Virginia American Ceramic Society 4055 N. High St. Columbus 14, Ohio BEHAR FIREBRICKS 4 PO TTERIES LTD. (A. Banerjee) P. O. Mugma, Dist. Manbhum, India BEHREND. Oswald (R5 2557 Robinwood, Toledo. Ohio (Owens-Illinois) BEHRINGER. H. L. (G) Tygart Valley Glass Co. Washington. Pa. BEINLICH. Alfred W. (R) 3404 19th Ave., Sheffield, Ala. (Tennessee Valley Authority) BEINLICH. Justus J. (R) United States Steel Corp., Room 2421 525 W illiam Penn Place Pittsburgh 30, Pa. BELD. George H. (W) K eivinator Div. American Motors Corp. 1600 Clyde Park .Ave.. S. W. Grand Rapids 9. Mich. B E L X O W SK I. A rthur V. (G) 161 W hittcnton St.. T aunton. Mass. (General Electric Co.) BELL, Clarence D. Box 3433. Clemson Collrge Station Clemson. S. C. BELL. Kenneth E. (S) 549 Lacasse Ave., Apt. 6 Eastview, Ont., Canada (Ottawa 3rick 4 Terra Cotta Co.. Ltd.) BELL. Richard fM) Bell Clay Co., Gleason, Tenn. BELLAMY. Harry T. (R) Armour Research Foundation 10 W. 35th St.. Chicago 16. III. BELLAM Y. L. B. (R) Abrasive & Metal Products Co. 729 Mcldrum Ave., Detroit 7, Mich. BELLIDO . Bartolom Damis Director Gerente de ME.R.S.A. Lugones (Oviedo), Spain BELOW, Henry (W) Pennsbury Pottery, Morrisville, Pa. BEN BEN EK . Raymond (S I) Canada 3 rick. Ltd. Streetaville, Ont., Canada BENDER. Bob G. (GI) CBS-Hytron, Kent 4 Warren Sts. Newburyport, Mass. , BENDER. John H. (R) Denver Fife Clay Co., Box 5510 Denver 17, Colo. BENEDICT. Virginia American Ceramic Society 4055 N. High St.. Columbus 14, Ohio BENJAMIN ELECTRIC MFG. CO. (Hoyt ? . Steele) Des Plaines, III. B EN N ER. Stanley G. (E) Johns-Manville Research Center Manvillc, N< J. Roster 7 BENNER. W. J. .R ; 730 Romona Rd.. Wilmette, III. ( Pyto Refractories Co.) BEN N ETT. A. H. (G) Americas Optical Co., Research Center Soo-jbridge, Mass. BEN N ETT, A. Lee ( S r i ) 1S30 Las Flores Dr., Glendale. Calif. ;( Pacific Clay Products) un.N'NETT, Dwight G. (E F I) 2Q4 Ceramics 31dg. L'niversity of Illinois. Urbana, III. BENNETT. Edward (W) 3. G. Carp. 321 Broad Ave., Ridgeneld, N. J. BENNETT. Frederick R. (R) Box 325. Hartsvillc. S. C. (Carolina Refractories Co.) BENNETT. Harry J. (W) Crooluville China Co. Crooksville, Ohio B EN N ETT. Myles ?. <BI) 6552 N. Oldham Lane San Gabriel. Calif. (Gladding, McBean & Co.) BEN N ETT. W alter R. <S) Acme Brick Co.. Millsap, Texas BENSON. Edward (R) New D eparture Div. General Motors Corp.. Bristol. Conn. BENTZ, George B. (W ) National Plumbing Pottery. Inc. 305 N. Front St.. Columbus l i . Ohio BEN ZEL. Jam es F. 840 Techwood Dr., X. \V., A tlanta, Ga. BERG, Morris (B) 315 Pleasure Rd.. Lancaster, Pa. (Radio Corp. of America) BERGER. Bernard M. (E) Dept. 817, Sears, Roebuck & Co. 925 S. Homan Ave., Chicago 7, 111. BERGER. Donald Francis (G) 41 \V. South St.. Painesville. Ohio (Diamond Alkali Co.) BERGERON. Clifton G. (E l) Whiripool-Seeger Corp.. 300 Broad St. St. Joseph. Mich. . . -IV E R SE N , Wiggo A /S Egersunds Fayar.cefabriks Co. Egersuod. Norway BERKELHAM SR. Louis H. (E l) 3621 W. Howard S-.. Skokie. 11!. (Ohmite Mfg. Co.) B E R N A R D IN I. Guy F. (W) Box 19. P- R. 1. Latrobe. Pa. (Scupakotf Div.. Carborundum Co.) BERNS, Milton H. (M) 249 Charlotte Ave.. Hamburg. N. Y. (Electro Refractories & Abrasives Corp.) BERNSTEIN. Leonard (B) Kwikset Locks. Inc. 516 E. S anta Ana St.. Anaheim. Calif. B E R N ST O R F. Robert B. (D) Box 679. East Liverpool. Ohio (Commercial Decal. Inc.) BERRIN. Lloyd c /o Jack Cole. 5731 16 Carlton W ay Hollywood 23. Calif. BERRY. Thom as F. (B) 527 34th St.. U nion City. N. J. (R adio Corp. of America) BERTHA. Edward J. 3310 N. Calvert St., Baltimore 18. Md. BESSE. Richard W. (W) O nondaga Pottery Co. 1856-38 W. Fayette St. Syracuse 4, N. Y. BESSEY. George E. Chalk Lim e & Allied Ind. Res. Assn. 30 C hurch St. Welwyn. Herts. England ''" `VT. Edison F. (G) .ibbey-0wens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio BEST. W ILLIAM S. (S) R.R. 3. New Bethlehem. Pa. (New Bethlehem Tile Co.) VOL. .15. No. 10 (1930) BETHLEHEM STEEL CO. (Hobart M. Krar.er) Bethlehem. Pa. BETTISON. L. S. (S) Chambers Brothers Co. 52nd 4 Media St., Philadelphia 31, Pa. BETZ. GEORGE C. (M FI) Metal 4 Thermit Corp. 100 Park Ave., New York 17, N. Y. BETZ. Wilber-. A. (W ) U. S. Potters Assn. 104 E. Fourth St., East Liverpool. Ohio BEVERIDGE. John F. (W ) 10 Stanford St.. Halifax, Nova Scotia (Royal Canadian Navy) BEVIS. Ralph E. (E l) International Division. Ferro Corp. 4150 E. 56th St.. Cleveland 5. Ohio BEYER. George I. (E) Hall Ave.. St. Marys. Pa. (Pure Carbon Co.) BEZBORODKO. David (G) Mechanical Mirror Works, Inc. 661--663 Edgecombe Ave. New York 32. N. Y. B. G. CORP. (Edward Bennett) 32! Broad Ave., Ridgeneld. N. J. BICK ERSTA FF CLAY PRODUCTS CO. (L. N. Bickersta.T) Box 1173 Columbus, Ga. BICKERSTAFF. L. N. (S) Bickerstaff Clay Products Co. Box 1173, Columbus, Ga. BICKFORD. Fred A. (G) Box 29. R.R. 2. Campbell, N. Y. (Corning Glass Works) BIDDLE. George J. (R) 208 S. LaSalle St.. Chicago 4, III. (Illinois Clay Products Co.) BIDDULPH. Albert 11 Holden Rd. W olverhampton. England (Ferro Enamels Ltd.) BIELSTEIN. Hans O. (R) Metallurgy Research Branch Aeronautical Research Lab. (WCRRL) WADC. W right-Patterson AFB, Ohio B ILLH EIM ER. John E. (WJ) Highwood. Easton Ave. New Brunswick. N. J. (M itchell-Bisscll Co.) BILLIAN. Carroll J. (G) Owens-Illinois General Research Div. 1700 N. Westwood Ave.. Toledo 1. Ohio BILLINGS, David D. (G) Glass Containers Corp. 3601 Santa Fe Ave. Los Angeles S8, Calif. BIONDI. Joe 2310 E. 52nd Sc.. Los Angeles 58. Calif. BIRCH, Raymond E. (R FI) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22. Pa. BIRSE. Alexander L. John G. Stein & Co.. Ltd. Bonnybridge, Scotland BISHOP. Frederic L. (GF) Kimble Glass Co. Owens-Illinois Technical Center 1700 N. W estwood Ave. Toledo 7, Ohio BISH O P, George J.. I l l (S) Guignard Brick Works, Box 480 Columbia, S. C. BISHOP. Harold E. (G) Owens-Coming Fiberglas Corp. Anderson. S. C. BISHOP. Laveme R. (R) Aluminum Co. of America 3300 Missouri Ave.. East St. Louis, III. BISSELL. Don W.. Jr. (R I) 703 Green St., Rockton. 111. (Ipsen Ceramics Inc.) BISSET. Ronald W. (R) Aluminium Limited Sales. Inc. 630 Fifth Ave.. New York 20, N. Y. BIXBY, Henry D. (S) Central Commercial Co. Darlington, Heaver County, Pa. BLACK. K. R. i.G) Kimbie Glass Co. 1700 N. Westwood Ave. Toledo, Ohio BLACKBURN, A. Reif (M I) 204 N. State 5:.. Westerville, Ohio (Ram. Inc.) BLACKBURN, Douglas H. ( G) 3921 Langley Ct. W ashington 16, D. C. (National Bureau oi Standards) BLACKWOOD. James M. (R I) 124 First S:., Niagara Falls, N. Y. (Carborundum Co.) BLASS. H enry M.. II (B) 329 N. Hoover Ave.. W hittier, Calif. (North American Aviation) BLAHA. Emil (R) 415 Asctr.cad Rd., Cheltenham, Pa. (Selas Corp. of America) BLAIR. Gerald E. (G) 667 palm yra Rd.. Plttsford, N. Y. (Bausch & Lomb Optical Co.) BLAIR. Marion W. (S r) 2131 S. Center St., Terre Haute, ind. (M anufacturers Equipment Co.) BL.MSON. Pierre Societe des Electrodes & Retractaires "Savoie" 16. Rue ae M onceau. Paris 3*. France BLAKE. William V. (R I) Macklin Abrasive Co.. Jackson, Mich. BLAKELY. A lexander M. (B) Precision G rinding Wheel Co., Inc. 3301 T orresdalc Ave. Philadelphia 36. Pa. BLANCHARD. M. Kenneth (E ) A. O. Smith Corp., 3533 N. 27th St. Milwaukee 1, Wise. BLAU. Henry H. fG FI) Federal Glass Co.. 515 E. Innis Ave. Columbus 7. Ohio BLAZOVIC. Phil. Jr. (M) 3236 W estern Ave. Highland Park. 111. C onioiicatrd Feldspar Dept. International M inerals 3t Chem. Corp.) 3L EC H EISEN . J. (E) Rosiclare Lead 4 Fluorspar M ining Co. Rosiclare. 111. BLENK3. William Hcr.rv. Jr (G) '.412 Main St.. Milton. W. Va. (Blenko Glass Co.. Inc.) BLESSING. Robert Lee ;SI) 1714 Cresrwood Dr. Mineral Wells, Texas (Texas Vitrified Pipe Co.) BLISS. L. G. (M) Foote Mineral Co.. 18 W. Chelten Ave. Philadelphia 44, Pa. BLISS. Roderick T. (S) 35 E. C enter St.. Nesquehoning, Pa. (D eister C oncentrator Co.) BLITON. Jerald Box 326. Alfred. N. Y. . . BLOCXSIDGE. A rthur 3.. Jr. (R) Jones 4 Laughlin Steel Corp. 40 Longwonh St., Pittsburgh 7. Pa. BLODGETT, William E. (W ) 11 Lakeview Terrace, Wobum. Mass. {R. Guastavino Co.) BLOHM. Richard E. (E) 1657 E. W averty Way Baltimore 12. Md. (Rheem M anufacturing Co.) BLOME. James C. 1108 S. First, Champaign, III. BLOOM. Ray A. (R) Technical Library T imken Roller Bearing Co. Canton 6. Ohio BLOOR. C. A. (W ) Universal Clay Products Co. Sandusky, Ohio BLOORE, Robert Boulton Swinnertons. Ltd. Hanley, Stoke-on-Trent. England Roster 9 BLUE RIDGE GLASS CORP. BOROS, John (W) BOYNTON, Claudia C. (D) (J. K. Lewis) Kingsport, Tenn. Pacino Tiie & porcelain Co. 1012 X. Franklin St. BLUM. Seymour (W I) 7716 E. Olive St.. Param ount. Calit. Manchester, Iowa Raytheon Manufacturing Co. BOSCH. F. M. (Industrial Publications, Inc.) Research Div. Lab. Anorganisch-Teeh. !c BOYNTON. Robert S. (X) Waltham. Mass. Electro chcnie National Lime Assn. iIE. A rthur j. (S i) 22 Plateaustraat. Ghent, Belgium 925 lfth St. N. W. iurray Tile Co.. Cloverpor:, Ky. BOSLEU. Kreil (E) Washington 5. D. C. 3L C M E K , Fridolin (D.i 56 Marti Rd., Corner Lakcvicw Dr. BOZZO. J. G. (G) Lane Gate Rd. Gardner, Mass. Pierce Glass Co.. Railroad Ave. Coid Spring, Putnam Co.. N. V. (Florence Stove Co.) Port AUcgar.y, Pa. (Commercial Decal. Inc.) BOTFIELD, George B. (R) B R A C K 3ILL. Charles E. (R) BLUNT. Royden A. (G r) Botrield Refractories Co. 1650 Liggett Ct.. St. Louis 19, Mo. Buck Glass Co., 841 E. Fort Ave. Swanson & Clymer Sts. (Laciede-Christy Co., Baltimore 10, Md. Philadelphia 47, Pa. Div. H. K. Porter Co.) BLYTHE COLOUR WORKS. LTD. B O T FIE L D REFRACTORIES CO. 3 RAD EX, Roger W. (M) Cresswell. Stoke-on-Treat. England (George B. Botneld) Hammond Lead Products BOARDMAN, Charlotte K. (R) Swanson & Clymer Sts. 526 Calumet Bldg., Hammond, Ind. Thomas A. Edison. Ice. Philadelphia 47, Pa. BRADEN. W illiam E. SI Lakeside Ave., W est Orange, N. J. BOTHE. James V. (G) Ferro Corp., F ar East Div. BOBROWSXY, A. R. (R) 2 Pyrex St., Coming, N. Y. Box 6120, Kowloon, Hong Kong 2012 Pontiac Rd.. R. R. 2 (Coming Glass Works) BRADFORD. Virgil E. (W J) Ann Arbor, Mich. BOUDER, Norman M., Jr. (G) 574 E. Gates St., Columbus 6, Ohio (Ford Motor Co.) 4820 Roland Ave.. Baltimore 10, Md. BRADLEY. Alan L. BOEKER, V. W ..(G l) (Pemco Corp.) Cullinati Refractories Ltd. Owens-Coming Fiberglas Corp. BOURGERIE, R. D. (W ) P. O. O litantsfontein 598 Madison Ave., New York 22, N. Y. Radio Materials Corp. Transvaal. South Africa BOGATAY, Paul (D) 2225 N. California Ave., Chicago 18. 111. BRADLEY. Charles A.. Jr. (G) 45 W. Weisheiraer Rd. BOVEE. Benedict A. (M) Firewood Acres, R. R. 2, Coming, N. Y. Columbus 4, Ohio 1827 W inter Rd. (Coming Glass Works) (Ohio State University) Grand Island, R.F.D., N. Y. BRADLEY, Edward L. BOGNAR. Edwin J. (R I) (H arper Electric Furnace Corp.) Georgia Institute of Technology B ognar & Co., Inc. BOWDEN, James J. (B) Box 4985, Atlanta, Ga. 1711 F irst N ational Bank Bldg. Bowflux Co., Box 65, Cortland, Ohio BRADLEY, Fennim ore N. (I) P ittsburgh 22, Pa. BOWEN ENGINEERING. INC. 940 Oregon St., Palo Alto, Calif. BOHN, Edward L. (R ) (W illiam A. Bowen) BRADLEY. R. S. (R F I) Mullite Refractories Co.. 10 Canal St. North Branch, N. J. 4 Park Circle, Mexico, Mo. Sheiton, Conn. 30L A N O V IC H , Melvin (S) BOW EN, William A. (M) Bowen Engineering, Inc. (A. P. Green Fire Brick Co.) 3RADSTREET, Samuel W. (E) 2118 Palmer Sq,, Chicago 47, IU. North Branch. X. J. Armour Research Foundation (Illinois Brick Co.) BOLE. George A .JX F ) BOWER. David N. (G) 2922 Rohr Dr., Toieca 12. Ohio 10 W. 25th St.. Chicago 16. III. BRADWELL, Cyril (RI) Engineering Experiment Station (Owens-Illinois) Parkhurs; Apts. 7B Ohio S tatt Uaiversiry Columbus 10, Ohio BOWERS. Donald j. (3 ) 3arbara 4 Marion Sts., Bethlehem. Pa. (Bethlehem Steei Co.) LEN. W. J 950 Highland Dr., Columbus 14, Ohio BRADY. Eari (S) A lg e m e n e V e r e n i g in g -.-oor d e (Battelle Memorial Institute) Box 522. Waskom. Texas Nederiancse, Aarcewerk en BOWES, Urban E. (G r) (Acme 3 rick Co.) Glasindustrie. Haagweg 129 Owens-Illinois, Box 1025--1026 BRADY. John G. (3 ) Rijswijk. Netheriar.es Toledo 1, Ohio Dept- of Mines k Technical Surveys BOLLINGER. Robert H. (M I) BOWMAN. Donald C. (E) Ceramic Section, so Lydia St. Georgia Kaoiin Co.. - J j N. Broad 3t. 579 S. Craig ?!.. Lombard. 111. Ottawa. C a t. Canada Elizabeth 2. N. J. (Chicago Vitreous Corp.) 3 RADY. Justin M. (W ) 3 0 L 0 N . David \j. 'R D BOWMAN. D. Scott (M> 1320 N. Delaware. Apt. 604 5525 E. 31st.. Indianapolis, Ind. Carborundum Co.. Globar Div. Indiar.apoJs. Ind. (Sales Representative) Niagara Falls, N. Y. (American Art Clay Co.) BOLTON, H arry L. (R ) BOWMAN. Eugene D. (G) BRADY. T. E. (R) Philadelphia Quartz Co. 824 Oakwood Ave.. Columbus 6. Ohio Surface Combustion Corp. Public Ledger Bldg. (Kimble Glass Co.) 2375 Dorr St., Toledo 1, Ohio Independence Square BOWMAN. John G. (W ) BRAIN. Douglas G. (W ) Philadelphia 6. Pa. 241 S. Juliana St.. Bedford, Pa. I960 Jane St. BOLZ, Leonard H. (B) BOWMAN. Robert R. (R) T oronto 15. Ont.. Canada National Bureau of Standards, Div. 9 : 7 Harbison-W alker Refractories Co. (American Standard Products) Conn. Ave. it Van Ness W ashington 25. D. C. 609 Jackson Bldg., Buffalo 2. X. Y. BRAMLZTT. William P.. Jr. (GI) BOWNE, Martin S. (S I) Cumberland Rd.. R.R. 2. Millville. N. J. BONEBRAKE. H. P. (M) Lee Clay Products Co., Inc. (Armstrong Cork Co.) Aluminum Co. of America 1501 Alcoa Bldg.. Pittsburgh 19, Pa. Clearfield, Ky. BRANDT. Kristian H. (B) B O N N O T CO. (B. T. Bonnet) BOYCE, Joseph (M) 1076 Karesn Ave., Pom ona. Calif. 722 Mulberry Rd.. S. E.. Canton 2, Ohio Vitro Mfg. Co., 60 Greenway Dr. (Convair) BONNOT. B. T. (M F) Pittsburgh 4, Pa. 3RANDT. Martha W. (G) Bonnot Co., 722 Mulberry Rd., S. E. BOYCE. Robert E. (W ) National Glass Budget Canton 2, Ohio Harker Pottery Co. 800 Grogan Bldg., 510 Wood St. BONSTEIN. Thomas E. (W) East Liverpool, Ohio Pittsburgh 22, Pa. Paper Makers Im porting Co., Inc, BOYD, Frank H. (M) BRANDT. Neill M. (G) 44 S. Second St., Easton, Pa. S. G. Frantz Co., Inc. Mellon Institute. 4400 Fifth Ave. BOOTH. John F. Bo* 1128, Trenton 6, N. J. Pittsburgh 13, Pa. Hazlehead Hall. Penistone, Nr, Sheffield Sheffield, York, England BOYD. John E. (M I) Box 2414, Greensboro, N. C. BRANDT. William O. (W FI) 2951 Dclor Dr.. Los Angeles 32, Calif. (Hepworth Iron Co., Ltd.) (Carolina Pyrophyllite Co.) BRANT. A rthur M. (R ) BOOZE. M. C. (R F I) BOYD. L. R,, Jr. (S) 156 H am pden Park Dr., Tiffin, Ohio 4725 W alton Creek Rd. Teague Brick & Tile Co,, Bo* 229 (Basic, In c) Cincinnati 27, Ohio | (Charles Taylor Sons Co.) Teague. Texas BOYD. Robert C. (E F I) BRANT. David G. (R I) 39 Valley View. Tiffin. Ohio -P P . Harold F. (G F) American Standard, 1541 S. Seventh St. (Basic. In c ) 67 Gorton St.. Coming. N. Y. (Coming Glass W orks) Louisville 8, Ky. BOYLES. John P. (W ) BRASHARES. C. A. (R) Harbison-Walker Refractories Co. BOROM . Marcus P. Edwin M. Knowles China Co. 1800 Farmers Bank Bldg. Box 128. W aynesboro. Ga. Newell. W. Va. Pittsburgh 22, Pa. Vol. 35. No. 10 (1050) Roster 11 UR.AiSrlELO . Henry C. tU ; K.K. 1. levers Rd.. Foster. Ohio l General Electric Co.) 3RAUCKMAN. Alvin J. i 3 Kern Ramble, Austin, Texas 8 ' UN. Garv A. j.x 8.',*. Alfred. X. V. i : Kenneth J. (W ) W encie! Tiie Co. 1 K'.ag 4 E nterprise Ave. Trenton, X. J. BRAYKOVTCH,"A. ? . (W ) Hum phries Manufacturing Co. 231 E. Fifth St., Mansfield, Ohio Bneilian Ceramic Society-- see Assaciacao Brasileira de Cermica BREED LO VE, James G. (B l) 703 Jam es 3lvd. Signal Mountain. Tenn. (American Lava Corp.) BREEME, George A. (G) Industrial Colloids Co. Emienton, Pa. BREEZE, Lewis K. (E ) 501 E. 238th St.. Willowick, Ohio (Glasete Products, Inc.) 8REITW IESER. Robert H. (R) 1616 \V. 27:h. Pueblo, Colo. (Standard Fire Brick Co.) BREXXE, Trygve Box 266, Stavanger, Norway (Stavangerist) BREMNER. Robert P. (G) T. L. Sm ith Co. 2335 N. 32nd St. Milwaukee 10. Wise. 3RENNE3. Harold M. (E) B. F. Drakenfeld 4 Co., Inc. Washington. Pa. 3RENNER. R. F. (GF) Anchor Hocking Glass Corp. Lancaster. Ohio 3RESL1CK. Francis N.. Jr. 3903 th Ave-, S.. Seattle 3. Wash. V Z. L. A. (S) :S .acodan Dr., Pittsburgh 16, Ps. A A T CO Corp.) BREWER. Bob (S) Alamo Clay Products Co.. Inc. Box 93. Elir.encorf. Texas IREW STER. Gordon ?. (G1 2C7 Ridge Road E.. Wiliiantsoa. X. Y (3auseh 4 Lomb Optical Co.) BRIAN. Charies (W ) Paper Makers Importing Co.. Inc. ax S. Second St., Easton, Pa. BRIAN. Dick (W ) *22 Florida Ave.. Chester, W. Va. [Harshaiv Chemical Co.) BRIAN. S. Douglas (W ) Patter Makers lmnorting Co., Inc. 44 S. Second St.. Easton, Pa. 3RICK H O U SE. Robert E. (R) 206 Fairlawn Blvd.. Zelicnople, Pa. I Tohns-Manvillcl BRIGGS M ANUFACTURING CO. (A. J. Rable) 415 W. Seymour Ave. Cincinnati 16. Ohio BRIGHAM. Ralph V.. Jr. (W I) Beef Rd.. R. R. 3. Syracuse 7. N. Y. 'O n o n d a g a Pottery Co.) 3RINCKERHOFF. J. E. (R) Babcock Sc Wilcox Co, 161 E. 42nd St.. New York 17. N. Y. BRINDLEY. George W . (Bl Dept, of Ceramic Technology Pennsylvania State University University Park. Pa. BRINKMAN. Robert J. 3209 W ayne Ave., Dayton 10, Ohio BRISBANE. S. M. 40 Riverdale Rd.. Hawthorn E2 'ctoria, Australia irnimonwealth Scientific & Industrial .search Organization) BRISTOW. Robert H. (W I) 57 Sequoia Rd., R. R. 1 Ballston Lake. N. Y. i General Electric Co.) VOL. 3. NO. 10 (10.10) BRITCHER. Gordon (W ) 306 Berkeley Dr., Syracuse 10, N`. Y. (Syracuse Pottery, Inc.) BRITISH CERAMIC SOCIETY Federation House Stoke-on-Trent, England BRITTAIN, Clifford G, (RJ) Autumn St., W orcester, Mass. (N orton Co.) BRITTON. Marvin G. iB ) 121 Hornby Dr., Painted Post, X. Y. (Corning Glass W orks) BROCKWAY GLASS CO.. INC. (F. B. Hess) Brockway, Pa. BROOKE. Stanley Oughtibridge Silica Firebrick Co., Ltd. Oughtibridge, Sheffield, England BROOKOVER. George B. (G) 2015 Evansdale Ave.. Toledo 7, Ohio (Kimble Glass Co.) BROOKS. Robert H. (W ) 1738 Pavilion Dr., Pomona. Calif. (Norris-Tbermador Corp.) BROSIUS. John P. (G) 403 Emerson Ave., Aspinwail Pittsburgh IS. Pa. (Krieg Piston Ring Co.) BROSKE, William F. (S) Aircraft-Marine Products. Inc. 2100 Paxton St., Harrisburg, Pa. BROWER. William S.. Jr. (W J) National Bureau of Standards Div. 9.1, W ashington 25, D. C. BROWN. Arthur E. 605 Greenway Dr., Florence, S. C. BROWN. C. Justus. Jr. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broadway. Toledo 5. Ohio BROWN. Clarence B.. Jr. (M l Hardinge Co., Inc., Y ork. Pa. BROWN. Colin C. (G) 21 Medbury Ave., Cuba. X. Y. (Cuba Cheese & T rad in g Co.) 3ROWN. Donald Nicol <G) 4 E. Third St.. Coming, N. Y. fCorning Glass Works) BROWN, Donovan ?. fR I) 2704 Eldon Ave.. Drexel Hill. Pa. (North American Refractories Co.) BROWN. George L. (M ) 27 S. VanDien Ave.. Ridgewood, N. (Lithium Corp. of America. Inc.) BROWN. George Reuben (M ) North American Mfg Co. 4455 E. 71st Sr.. Cleveland 5. Ohio BROWN. John J.. Jr. (S I) Redford Brick Co.. 12th 4 Maury St. Richmond. Va. BROWN, Joseph A. fS) Baltimore Brick Co. 3200 E. Madison St.. Baltimore 5. Md. BROWN. Lawrence H. (W FI) Box 255, Miami 2. Fla. BROWN. Leslie (W ) Lenox. Inc. SO Meade St.. Trenton 5. N. J. BROWN. Meredith C. (S) 60 N. Friends Ave. Whittier. Calif. ( Consultant) BROW N. Raymond G. (R ) Strategic-Udy Processes. Inc. Box 835, N iagara Falls. N. Y. BROWN. Raymond J. fX) Ceramic Age. Ninth-Chester Bldg. Cleveland 14. Ohio BROWN. Roy W. (G) 3842 Grennocb St.. Houston 25. Texas (Carborundum Co.) BROWN. Wilbur F. (GF) Lihbey-Owens-Ford Glass Co. Rassford. Ohio BROWN. William E. (R) Box 217. R.R. 1. Norristown, Pa. (E. J. Lavino 4 Co.) BROWNE. Thomas C. (R I) 2115 Orchard Dr. South Pliinfield. N. J. (Titanium Div.. National Lead Co.) UUUWXELL. Wayne E. (SI) 126 Horneii St., Hornell. N. Y. (State University of New York. College o( Ceramics) BROW XEW ELL. George E. (R! Diamond Alkali Co. Box 430. pair.esviiie. Ohio BRUCHMANN. Heimu: (Ml Haeger Potteries. Inc., Dundee, 111. BRUEGGERHOFF, Charles (R) Mexican Zinc Co.. X. Rasim Coahuila. Mexico BRUHN, Hans W. (R) Corbart Refractories Co., Iuc. 1600 W. Lee St.. Louisville 10, Ky. BRUNNER. Cedric D. (W ) 106 W. Union, Rockton, III. (Ipscnlab of Rockford. Inc.) BRUNO. Lucier. V. (S) Guignard Brick Works Columbia, S. C. BRUSH. George D. (SI) Harrop Ceramic Service Co. 35 E. Gay S:., Room 413 Columbus 15, Ohio BRUSSE. William. Jr. (E ) Temco Inc., 4104 park Ave. Nashville 9, Tenn. BRYANT. Eugene E. (E FI) Ferro Corp.. 4150 E. 56th St. Cleveland 5, Ohio BRYCE. Homer L. (S) Henderson Clay Products, Box 870 Henderson, Texas BUCHAN. Charies R. 840 Techwood Dr.. N. W,, A tlanta. Ga. BUCHAN. M. A. (R I) A. P. Greer. Fire Brick Co. Troy, Idaho BUCK. Forrest W.. Jr. (E ) 1209 Loucxs Ave.. Scottdaic. Pa. Lithium Corp. 'f .America) BUCK GLASS CO. (Royden A. Blunt) 841 E. Fort Ave.. Baltimore 30, Md. BUCK. Ivan E. Jr. (E) 300 Greenwood Ave., R. R. 2 Cape May. X. J. (Keasbey Corp.) J.3UCKLES, Paul E. 'M I) 360 Brighton Blvd., Zanesville. Ohio (Donald Hagar Ceramic Materials) BUCKLEY. Edward D. (B) Champion Spark Plug Co. 900 Upton Ave.. Toledo 1. Ohio BUCKNER, O. S. (GI) Bay State Abrasive Products Co. Westboro, Mass. BUEGE. Robert H. (W ) Globe-Union, Inc., 900 E. Keefe Ave. Milwaukee 1, Wise. BUEHLER. Bert P. (S) 2439 Torrington Ave.. Parma 29, Ohio (Cleveland Builders Supply Co.) - BUESSEM. W . R. (B) Pennsylvania State University College of Mineral Industries University Park, Pa. BUFFALO POTTERY. IN C (R. E. Gould) 25 Hayes PI. Buffalo 10. N. Y. BUGOSH. John (R) E. I. du Pont de Nemours 4 Co. Grasselli Chemicals Dept. Experim ental S ta , W ilmington, Del. BUILDERS BRICK CO. (R. C. Houlahan) 3800 N inth Ave.. S.. Seattle 8. Wash. BVLKLEY. Ronald ( B) Socony Mobil Labs., Paulsboro. N. J. BULLARD, Edward R. (E) B. F. Drakenfeld 4 Co., Inc. Washington. Pa. BULLARD. Keith (GJ) 3518 Hungnam PI. Tarawa Terr. 2. X. C. (U. S. Marine Corps) Roster 13 LLOCK, 'jyrdon University of Birmingham Dept, of physical M etallurgy Edgbastcr.. 3irra:r.gham 15. England NGE, Fred H. (M) M . A. Hanna Co , Research Lab. in?, Minn. Oscar G. ( G r } Owens* Illinois Box 1035--1035, Toledo 1, Ohio RCHENAL. Charles H. (\V) Cambridge Tiie Mfg. Co.. Box 71 Cincinnati 15. Ohio R C H F IE L . B. M. (R F I) 4458 Rosewood PI., Riverside, Calif. (Consulting Engineer) RCHFIELD. Paul E. (G) Wyandotte Chemicals Corp. 1609 Biddle Ave.. Wyandotte, Mich. .'RD ICK , M ilton D. (W F I) National 3ureau of Standards Engineering Ceramics Section W ashington 25, D. C. 7RDICK, Sidney D. (G ) 104 A rgonne St., Corning. N. Y. (Corning Glass W orks) ,'RGESS, Blandforo C. (M F) USOM, A ? 0 923, San Francisco, Calif. ;XKE. J. E. (B) General Electric Co., Research Lab. Schenectady, N. Y. jRKE, L. Roger (R) 1203 Peoples 3ank Bldg. Pittsburgh 22. Pa. (Chas. Taylor Sons Co.) 7RKERT, John G.. Jr. 84 Greer. St.. Valley Stream , N. Y. JRKHALTER. Edward (SI) 7219 Interiaaken Dr. Tacoma 99, Wash. (Builders Brick Co.) JRK S, Cecil M. (R I) 70S Broadway. Steubenville. Ohio (W eirte-i Stet! Co.I EY, Frank N. (W ) jrsoil-Kuraphryes Div. g-W artter Corp.. Mansneid. Ohio URLEY, Newton Ray (W ) 1864 Dresden Rd., Zanesviile. Ohio (Burley Clay Products Co.) 'JRLINGAM E. Howard G. (E) California Metal Enameling Co. 6904 E. Siauson Ave. Los Angeies 22. Calif. URNAND, Guy M. (Life) Messrs. Johnson. Matthey & Co., Ltd. 78, Hatton Garden London, S. C. 1. England URNS. Frederick L, (W ) 400 Grandview Or., Highland Village Zanesviile, Ohio (W att Pottery Co.) URNS. Henry K,, Jr. (S) 1620 W averland D r., Macon. Ga. (Bunts Brick Co.) URNS, Joseph A.. Jr. (M ) Joseph A. Bum s & Son 124 Harrison Ave. Avalon. Pittsburgh 2. Pa. URNS. R. S. (E ) Artnco Steel Corp., Research Library Middletown. Ohio URRISS. William K. (G) Consolidated Feldspar Dept. In ternational M inerals 8c Chemical Corp. 20 N. W acker D r.. Chicago 6. III. BURROUGHS, F. H. (W ) Box 1329. T ren to n 7, N. J. (S tar Porcelain Co.) 1URTON. Howard 3. (G) 1618 Arlington Ave., St. Paul 17, Minn. 'M innesota Mining & Mfg. Co.) 1DN. W. A. (S) j E. Fourth St.. Mt. Pleasant. Texas (P aris 8c Mt. Pleasant R. R.) UJRWTNKEL. Lawrence G.. Jr. (G) Pennsylvania Glass Sand Corp. Two Gateway Center. Pittsburgh 22, Pa. Au. 35, No. 10 (19501 BUSH, Edward A. CALDWELL. Smiley. Jr. (C) 200 Washington Ave., Vandergrift, Pa. 717 Newberry Rd., Nashville, Tenn. BUSH. James W. (SI) I Ford Motor Co.) 4550 Delhi Rd., Cincinnati 58, Ohio CALDWELL. Smiley M.. I l l (Natco Corp.) 717 Newberry ?.J. 3USH. Ralph R. (M) 520 McKiniey St.. North Canton, Ohio Brook Mear.e Subdivision Nashville. Tenn. (Bonnot Co.) BUSH. W. G.. & CO. (John S. Herbert) CALDWELL. William D. (E l) Perfection Industries. Inc. 174 Third Ave., N., Nashville 3, Term. 1135 Ivar.hoe R3., Cleveland 10, Ohio BCSHONG, R. M. (R) CALLAHAN. K. D. (W FI) National Carbon Co., Tirfin 8t Town Sts. Fostoria, Ohio BUSSEY'. Donald A. (R) United States Ceramic Tile Co. East Sparta. Ohio CALLAHAN, Robert M. (B) Kaiser Aluminum & Chemical Corp. 4553 Seville Ave. Refractories Plant Los Angeles 58. Calif. Moss Landing. Calif. (Solar Mfg. Co.) BUSTEED, Donald J. (RI) CALLIN'AN. Edward E. (R FI) 8 Janet Circle, Shrewsbury. Mass. DeKalb Park. Center Square, Pa, (Bay State Abrasive Products Co.) (Alan Wood Steel Co.) BUTCHER. L. H-. CO. CALVA. Roberto (3 ) (George J. Middleton) 3238 E. Second S t. W ichita 3. Kans. 3628 E. Olympic Blvd. (Boeing Airplane Co.) Los Angeles 23, Calif. 3U T K O V IC H . Edward M. (R ) 2848 E. 97th St., Chicago 17. HI. CAMERON. David G. (M) Haller-Inc. 684 Ann A rbor Rd.. Plymouth. Mich. (Armour Research Foundation ) CAMERON, Robert A. (G) BUTLER. F. W. (W) Akron Porcelain Co.. Akron 14, Ohio BUTLER, Thomas J.. Jr. (S) Box 279, Austin 62, Texas (Elgin-Butler Brick Co.) BUTTERW ORTH. William N. (G) General Refractories Co. 9S0 Leader Bldg., Cleveland 14, Ohio BUTTLE. Robert L. (W) 420 W. L ong Ave., Du Bois. Pa. (Jeffers Electronics Div. Speer Carbon Co.) BUTTON. Daniei D. Box 971, Alfred. N. Y. BUTTON, Dudley (D) Mercedes Ceramic Studios 8 Wallace St. Woodbridge. Ont-, Canada BUZARD. Fred T. (M) Bell, Pine A' High Sts., Plymouth. Ohir ( Fate-Root-Heath Co.) Coming Glass Works. Coming, N. Y. CAMPBELL. C. V. (M l) 444 Florida Ave.. Chester, W. Va. (Ferro Corp.) CAMPBELL, Edward S. (G) Northwestern Giass Co. 5801 E. Marginal Way, Seattle 4, Wash. CAMPBELL. Frank. Jr. 3711 15th N.E., Seattle 5, Wash. CAMPBELL. G. Donald (G) 621 Sheiby St., Shelbyville. Ind. (Pittsburgh Plate Glass Co.) CAMPBELL. lar. (B) California Institute of Technology Div. of Geological Sciences 1201 E. California St. Pasadena a. Caiil. CA.MP3ELL. J. Douglas C.V) Lithium Corp. of America. Inc. 540 Lincoln 3!dg.. 60 E. 42nd St. New York :7. N. Y. CAMPBELL. Robert !.. Jr. (B) 3YRNS. Alva C. (R) University of W ashington Kaiser Aluminum & Chemical Corp. 324 Roberts Hall. Seattle 5. Wash. 1924 Broadway. Oakland 12. Calif. CAMPBELL. Robert id. (W FI) c Alfred. N. Y. (State University of New Y'ork, College of Ceramics) CABANILLAS, Oscar Gonzalez (S) Puerto Rico Clay Products Corp. Box 4729, San Juan, Puerto Rico CAMPBELL. Tom W. (R) Box 303, Poland. Ohio (Electro Refractories 8c CABLE. John A. (W) Abrasives Corp.) 1011 22nd St. N. E.. Canton 4, Ohio CAMPBELL. Van E. (W ) (U nited States Ceramic Tile Co.) 363 Highland Ave.. Wadsworth. Ohio CABLE. Margaret (DF) 1520 San Miguel Ave. Santa Barbara. Calif. (Ohio Brass Co.) CAMPOS. F. Torres Fabrics Nacional de Vdrio. C. A. CABLE. Stephen J. (W) Box 1049. Caracas. Venezuela 3615 Eaton, N.W., Canton 9, Ohio (U nited States Ceramic Tile Co.) CABOT. GODFREY L , INC. (F ra n k E. Daley) 46 Bayard St. New Brunswick, N. J. CACCAMISE. Charles T. (B) Electro Metallurgical Co.. 137 47th St Niagara Falls, N. Y. CAH OON . John B., Jr. (W ) 791 McLeod St,, Livermore, Calif. (University of California) CAIN. Robert W. 1 603 W. Church S t, Champaign, 111. CAITO. A. M. (R I) Basic. Inc., Maple Grove. Ohio CALA, Charles F. (G) 144 Hoover RtL, Rochester 17. N. Y. (Banach & to m b Optical Co.) CALABRESE. Donald W. Box 168, Alfred, N. Y. CANADIAN CERAMIC SOCIETY (Miss L. C. Keith). 49 Turner Rd. Toronto 10. Ont.. Canada CANFIELD, J. J. (EF) 2909 Orlando Dr.. Middletown 20. Ohio (Artnco Steei Corp.) CANNING, Robert (G) 202 Fox Chapel Rd., Pittsburgh 38, Pa. (Pittsburgh Plate Glass Co.) CANNON. John D. 2167 Highview Rd.. S. W. Atlanta 11, Ga. CAPEK. Raymond G. 2646 S. Clarence Ave., Berwyn, III. CAPELLMAN. John J. <R) 1118 Highland St.. Tarentum 1. Pa. (Pittsburgh Plate Glass Co.) CAPPS. Hubert. Jr. (S) R.R. 1, Coffeyville, Kans. CALDW ELL, Helen (D) (Ltadowici-Ceiadon Co.) Board of Education CAPPS. Webster (G) A dm inistration Bldg.. 1429 W. Seventh National Bureau of Standards Burlington. Iowa Washington 25, D. C. Roster 15 R 3 0 R U N D U M CO. (H . C. Martin) Buffalo Ave., Niagara Falls. N. Y. RDER. Frederick (Honorary. GF) C orning Glass V.'orks Vyeor Div., Corning. N. Y. REV. J. Sheicon (D) *' -t. of Design. University of Kansas jeace, Kans. N . George F. 628 S. Seminole. Okmulgee. Okla. RL. John E. i.GIj Corning Giass Works Box 544. Ccrr.ing. N. Y. RLSEX. Frederick L.. Jr. Box 62S. Georgia Tech.. Atlanta. Ga. RLSOX. Joseph A. (S) 20 Hawthorne St. San Francisco 5. Calif. (K raftile Co.) RLSOX. Robert H. (\V) L'niversai-Rundle Corp. Box 960. Xew Castle, Pa. RLSOX. William G. (R I) 175 Gienneld Dr., Pittsburgh 25. Pa. (Westinghouse Electric Corp.) RLYLE, Edward C. (5 ) Box 128. Ironton, Ohio (Cariyle Tiie Co.) RXAHAX, Thomas D. (MI) B. F. Drajcenfeld 3i Co.. Inc. Box 519. Washington, Pa. R JE S. Kenneth C. (G) Toledo Engineering Co., Inc. 3001 Syivacia Ave., Toledo 13. Ohio RXIG LIA . Stephen C. (B) Food Mach. 3c Chemical Corp. 161 E. 42r.d S:.. Xew Y'ork 17. X. Y. .RO. Robert (M) Hedi Schoop A rt Creations, Box 384 Xorth Hollywood, Calif. .RO TK ER S. Harry S. (M) H . C. Spinks Clay Co.. Inc. 1C00 Firs: National Hank Hid*. ' -pitinatt 3, Ohio HERS. R. 3. (M F) C. Soinks Clay Co.. Inc. Box 829, Paris. Tenn. vROTHERS. Richard 3., Jr. (M) H . C. Spinks C a y Co.. Inc. Box 829. Paris. Tenn. sROTHEP.S. T. E. (M) Gladding. McBean * Co. 2901 Los relia Blvd. Los Angetes 39, Calif. `.R P E N T E R . F. Scott. Jr. (W ) W hite Pigments Division Godfrey L. Cabot, Ine., 77 Franklin St. Boston 10. Mass. kRPEXTER. Woodrow (E) Barrows Porcelain Enamel Corp. Langdon Rd. 8t Penn. R. R. Cincinnati 13. Ohio ARR-LOW REY GLASS CO. (Norm an R. Beek) Baltimore 3, Md. kRROLL. Jerry W. (W J) 417 S. W estern Ave.. Kokomo. Ind. (American Radiator & Standard Sanitary Corp.) ARROLL. William F. (W ) 3499 McNally Ave., Altadena, Calif. (Florence Ceramics Co.) ARRCTHERS. John L. ( S r i) Lard Halt, Ohio State University . Columbus 10, Ohio ARTER. D. R. (M) E iglc-Picher Co. American Bldg., Cincinnati 1, Ohio ARTER. F. B. (W I) Tiffin 12. Ohio (Am erican-Standard Corp.) A ' ~TR, George J. ]02 20th X.E.. Seattle 55. Wash. A-. . ER. G erard T. (W ) O akland St.. R.R. 1, Box ll-A M attapoisert. Mass. (Corncll-D ubilicr Electric Corp.) o u 35. No. 10 (1956) CARTER. Herbert D. (W F !) 3351 Dorchester Rd. Shaker Heights 20. Ohio (Harshaw Chemical Co.) CARTER, J. Guild (M) Eureka Feldspar Mining Sc Milling Co., Inc.. 190 W. State St. Trenton 8. X. J. CARTWRIGHT, S. V. (S i) 1224 Victoria Ave., Corona. Calif. (Jordan Tiie Mfg. Co.) CARVL1X. Ceorge M.. Jr. (R) Koppers Co., Inc., Hoppers Bldg. Pittsburgh 19, Pa. CASAMO. Charles C. (G) Sylvania Electric Products. Inc. Emporium. Pa. CASE MANUFACTURING CORP. (Willard G. Young) 1000 W. Pine St., Robinson, 111. CASSADY, Bert L. (R) 5115 S. Lewis Ave.. Tulsa 15, Okla. CATON. Milion W. (R F) 22490 Nevada Ave., East Detroit, Mich. (Ceramic Div., Champion Spark Plug Co.) CAVANAUGH. D. J. (W I) 822 J2nd St.. Parkersburg. W. Va. (United States Ceramic Tile Co.) CAWOOD, Richard L. (M) East Liverpool, Ohio (Patterson Foundry Sc Machine Co.) CAYFORO. James M. (E l) 1317 Ridge Ave.. Steubenville. Ohio (Toronto Paperboard Co.) CECIL. Gowan L. (W ) Lone Star Ceramics Co. Box 14215. Dallas 34, Texas CECIL. Paul S. (E) Service Porcelain Enamel. Inc. Brill 8 Christie Sts.. Newark 5. X. J. CENTRAL SILICA CO. (E. C. Sawyer) 806 Market St., Zanesville. Ohio CERAMIC ASSOCIATION OF JAPAN (Yogyo Kvokwai) 7, Shiba-Xishikubo-Sakuragawacho Minato-ku. Tokyo. Japan CERAMIC COLOR & CHEMICAL MFG. CO. (W . F. Wenning) Box 297. Xew Brighton. Pa. CZRAMIQUE MAASTRICHT. N.V. (Comte L. de Meeus d'Argenteuil) Koge Barakkenstraa: 6 Maastricht. Netherlands CERMAK. Frank (W F) 1542 Union St.. Schenectady 9. X. Y. CERNY. Joseph J. (E) 5226-28 W. 26th St. Chicago 50 (Geero) III. (Resistors. Ine.) CERTILLI. Nicholas F. 73 Forest Ave., Caldwell, X. J. CRADEYROX. A. A. G. Qeveland Magnesite 8c Refractory Co. Ltd. Normanby Brickworks. Xormanby Middlesbrough, York, England CHAI. Ki-Kon 210 Linden Ave.. Ithaca. X. Y. CHAMBERLAIN. James M. W. (B) U. S. Stoneware Co.. Box 350 Akron 9, Ohio CHAMBERS. Fred (M) National Gypsum Co.. Luckey. O hio CHAMBERS. Gotdon H . (M) Foote Mineral Co.. 18 W. Cheiten Ave. Philadelphia 44, Pa. CHAMPION SPARK PLUG CO- CERAMIC DIV. (James S. Owens) 8525 Butler Ave., D e m it II, Mich. CHANTLER, L. W. (R) Standard Lime 8c Cement Co. Millville. W. Va. CHAPMAN. Alan T. 1563 W orthington St. Columbus. Ohio CHAPM AN. Frank E., Jr. (E l) 1026 Middlesex Rd., Baltimore 21. Md. (Pemeo Corp.) CHAPM AN, G. Marsh (W) Harshaw Chemical Co. 6265 W iehe Rd., Cincinnati 1J. Ohio C H A R 30N N iE R . William ?. (R! Walsh Refractories Corp. 101 Ferry S:.. St. Louis 7. Mo CHARLAND. Tel L. (R I) 317 W. Kerr Dr.. Midwest City. Okla. (Phillips Petroleum Co.) CHARLTON. Alex E. (W ) Photoceramics. Inc. 1822 W estern Ave., Cincinnati H . Ohio CHA RTERS. Melvin L. 12 M arvin Ln.. Xew Brunswick, N. J. CHASE. Dana (EF) Dana Chase Publications Elmhurst National Bank Bldg. York St. at Park Ave.. Elmhurst. 111. CHASE, H arry X. (R) 4040 Lakeshore Ave., Oakland, Calif. (W estern Refractories Co.) CHATTAHOOCHEE BRICK CO. (Paul M. G ark) Chattahoochee, Ga. CHATTANOOGA GLASS CO. (Joe G. Venable) Chattanooga 10, Tenn. CHAUM EIL. Frederic Verreries dc Bagneaux et Appert Ferres Bagneaux s/Loing Seine et Marne, France C H EN . L ouis Y. L. 462 Beacon St.. Boston 15, Mass. CHESS. James S. (G) Pittsburgh Plate Glass Co. One Gateway Center, Pittsburgh, Pa. CHESTERS. John H. (F) United Stcei Companies Ltd. Research <k Development Dept. "Swinden Laboratories". Moorgate Rotherham. Yorks. England CHICAGO POTTERY CO. (J. S. Clifford) 1920 Clybourn Ave. Chicago 14. III. CHICAGO VITREOUS CORP. (W illiam Kogenson'* 1425 S. 55th Court Cicero 50. 111. CHILCOTE. Joseph H. (R) 1907 16th St.. X.. Arlington 1, Va. (Bureau of Ships, Navy Dept.) CHILD, itr.es i... Jr. (Si Hancock Brick 3t Tile Co., 3ox 4f0 Findlay, Ohio CHU.DS. Clayton G. (B) 2257 N. York St.. Owensboro. Ky. (General Electric Co.) C H IL D S. Edwin E.. Jr. (E) 1604 G reenspring Dr.. Lutherville. Md. ( Pemeo Corp.) C H IL D S. Cary D. Box 826. Alfred. X. Y. CHIX G. Tung Rey (J) 31 Soares Ave.. Grd. Fir. Kowloon. Hong Kong (I-F e n g Enam elling Co. (HlK:), Ltd.) C H IO C H ETTI. Vincent E. J. (G) Box 67. West Clarksville, N. Y. (Bausch it Lomb Optical Co.) C H IS H O L M . BOYD Sc W H IT E CO. (Robert A. Ebersole) 610 W. 57tb St. Chicago 21, 111. CHORMANN, O. I. (E) 195 Gregory Hill Rd. Rochester 20, N. Y. CH O TH IA . Boman S. Wndia Bldg., 137 Queen's Rd. Bombay, India (B ritish Hartford Fairmont Ltd.) CHRISTENSEN. Carl J. (B) University of Utah Salt Lake City 1, Utah CHRISTENSEN. Chr. Royal Copenhagen Porcelain Manufactory 8c The Faience Manufactory Aluminia Smallegade 45, Copenhagen F., Denmark Roster 17 CHRISTIE, Leonard D.. Jr. (R) f 34J Sound Beach Ave. Old Greenwich, Conn. (Babcock 4 Wilcox Co.) CHRISTMAN. Brian 3. (W) 25 E ggert Ave.. M etuchen. X. J. (Rheem M anufacturing Co.) v"EISTM AN. C. E. (E! ' Federal Enameling 4 Sumping Co. Pittsburgh, ?a. CHRISTMAN, K. M. (RI) | 1514 l lt h St.. N.E.. Massillon, Ohio (M assillon Refractories Co.) CHRISTOPHER. A. B. (S) Chambers Bros. Co., 52 4 Media Philadelphia 31, Pa. CHU. Gordon ? . K. (E) Research Laboratory, pfaudler Co. 1000 West Ave.. Rochester 3, N. Y. CHUN, Lee 11 Magnolia Rd., Yau Yat Chuen Kowloon. Hong Kong CHUTTER, George A. (M) Middle Kaddam Rd., Portland, Conn. (G iobar Div., Carborundum Co.) CIA. M EXICANA DE REFRACTARIOS A. P. GREEN, S. A. (H . Fetter) Hamburgo 51, Apartado Postal 71 Bis Mexico. D. F. CICHOW SXI, V. J. (E ) Fusite Corp., 6000 Fernview Ave. Cincinnati 13, Ohio CINCINNATI MILLING PRODS DIV. CINCINNATI MILLING M A C H IN E CO. (H ayw ard A. Gay) 4701 Marburg Ave., Cincinnati 9. Ohio CLARE, Robert L. (S F I) 212 R ector St., Perth Amboy, N. J. (Larede: Corp. of New Jersey) CLARK, Alec W. Scacson. Clark 4 Co.. Ltd. Rotherham. York, England CLARK. A rthur R. (B) Box 352. Far Hills, N. J. ( roxlyr. Laboratories) CLARK. C. 3u r:o n (3 ) 766 Meadowcrest Dr. ittsburgh 23, Pa. vHar'oison-Waikcr Refractories Co.) CLARK. Damei J. (S) Vitro M:g. Co.. 60 Greenway Dr. Pittsburgh 4. ?a. CLARK. H .race X. <R) Refractory 4 Insulation Corp. 120 W all 5t.. New York 5. N. Y. ZLARK. James L. IS) 150 Y ates St., Denver. Colo. (Robinson Brick 4 Tile Co.) ZLARK, John D. (X I) 656 Lindley Rd.. Glenside, Pa. (Foote Mineral Co.) ZLARK, Paul M. (S) Chattahoochee Brick Co. Chattahoochee. Ga. 1LARK. Richard E. (M I) 4104 D unhaven Rd.. Dallas. Texas (R . T. Vanderbilt Co.. Inc.) ZLARK. Thaddeus J. E. (W ) 113 Elmore Ave.. Trenton 9, N. J. (Trenton Potteries Co.) -LARK. W. D,, Jr. (R) A. P. Green Fire Brick Co. M exico. Mo. X A RXE. Ford K. (G) Phxlco Corp., Church Rd., Lansdale, Pa. LARKE, James A. Bilstcn Foundries Ltd:. Highfields, Bilston, Staffs, England ILAUS. Karl M. (W) Mosaic Tile C o, Pershing Rd. Zanesville. Ohio XAY. W ilfred (E) R aiser Metal Products, Radcliffe S t jstol. Pa. IJURN C O , LTD. x<6- M. Hungertord) 350 W . Hastings St. V ancouver 9. 3. C.. Canada "OL. 35. No. 10 (1956) CLAYCRAFT CO. (Phillip W. Tefft) Box 866, Columbus 16, Ohio COGEN, Saul (S> Davidson Brick Co, 4701 Floral Dr. CLAYPOOLE. Stewart A. (G) R.R. 2, Painted Post. N. Y. (Corning Glass Works) CLEEK, Given W. (G) National Bureau of Standards Washington 25, D. C. CLEMENS, August, Jr. (M) 205 . Gittings Ave., Baltimore 12, Md. (Arcrods Corp.) CLEM ENS. Eugene C. ( S r!) Cannelton Sewer Pipe Co. Cannclton. led. CLEVELAND, George B. (B) California Div. of Mines 217 W. First St. Los Angeles 12, Calif. CLEVELAND MUSEUM OF ART (William M. Milliken) Cleveland 6, Ohio CLEVELAND. Theodore K. (G) Philadelphia Quartz Co. of California Sixth 4 Grayson Sts. Los Angeles 22, Calif. COGHILL, H. T. (X) 2023 Coilingswood Rd. Columbus 21. Ohio (Refractories D iv, Carborundum Co.) COHEN, Aaron (S) Box 405, WiUamir.a, Ore. (Willamina Clay Products) COHEN. Alvin J. (G) Mellon Institute. 4400 Fifth. Ave. Pittsburgh 13. ?a. COHEN, Arthur E. (G> Sylvania Electric Products, Inc. Cottage Place, Mineola, N. Y. COHEN, Bernard (G) 130 Spruce W ood Circle Geneva, N. Y. (Sylvania Electric Products, Inc.) COIN, R. H. (E) Ingram-Richardson, Ice. Jefferson Rd, Frankfort, Ind. Berkeley 10, Calif. CLEVENGER, Thomas R. Massachusetts Institute of Tech. Rm. 20-C-001, Cambridge, Mass. COLCORD. John E. (RJ) 1706 Sherman Ave. South Bend 16, Ind. (Bcndix Aviation Carp.) CLEVER, William R. (G) 401 N. Elm S t, Lincoln, 111. COLE. David L. Box 611, Alfred. N. Y. (Pittsburgh Plate Gloss Co.) COLE, G. Percy (G) CLEVERLY, Robert B. (S I) 22120 Westwood Rd. Dominion Glass C o, Ltd. Box 190, Montreal, Q ue, Canada Fairview Park 26, Ohio COLE. Harold R. (R) (Universal Sewer Pipe Corp.) National Carbon Co. CLEWS, Francis H. Town S t, Fostoria, Ohio British Ceramic Research Assn. COLE. Sandford S. (BFI) Mellor Laboratories, Shelton Titanium Division, National Lead Co. Stoke-on-Trent. England Research Dept, Box 53 CLIFFORD, J. S. (W ) Chicago Pottery Co. 1920 Qybourn A ve, Chicago 14. 111. South Amboy, N. J. COLE. Sandtord S,, Jr. (RI) Power Tube D iv, Raytheon Mfg. Co. CLINE, I. R. (S> Waltham 54, Mass. Western Brick C o, Danville, 111. COLEMAN. Bruce G. CLINE. Robert W. (W I) 377 Main S t, East Aurora, N. Y. (Onondaga Pottery Co.) CLIPPER DIAMOND TOOL CO, IN C (Joseph Xiipper) 345 Hudson St. J 4 AP Scott Ltd. Box 209. Dunecin, New Zealand COLEMAN. Caruthers A. (S) Big Run CcaJ 4 Clay Co. 133 N. Limestone S t, Lexington, Xy. New York 14. M. Y. CLOSE, Barbara S. 36 Lenox ?1,, Middletown. N. Y. CLOSE, Paul (G) Owens-Illinois COLEMAN. J. C. (G) 3746 Maoieway D r, Toledo 14. Ohio (Kimble Glass Co.) COLEMAN, Robert L. (SI) 20631 Greenwood. Olympia Fieids. 111. Box 1035-6. Toledo, Ohio (Chicago 3 rick Co.) CLOUGH, Philip J. (R) COLEMAN. Thomas B. (S) National Research Carp. 63S Tarboro S t, Rocky Mount, N. C. 70 Memorial D r, Cambridge 42, Mass. (Noah Brick Co, Inc.) CLOWES. E. J. (W) Clowes Ceramic Corp. 3711 Calhoun Ave. COLLIER. Roger E. Glenwood Park Apts., Apt. 1 2605 Oak S t, Chattanooga. Tenn. Chattanooga 7, Tenn. COLLINS. G. F. (G) CM OLIK. Clarence G. (B> 4403 Sheraton D r, Parm a 29, Ohio (Clevite Research Center) COATES, Bill (SF) Coates Co, Box 935, Austin 65. Texas COBLE. Robert L. (B) General Electric Research Lab. Box 1088, Schenectady, N. Y. CODE. Thomas E. (EJ) 921 E. Jefferson, Miamisburg, Ohio (Frigtdaire D ir, General Motors Corp.) COEN, Bernard (W) Woodbridge Sanitary Pottery Corp. 500 Green S t, Woodbridge. N. J. COFFEEN, William W. (E F I) 1024 Boulevard. Westfield, N. J. (Metal 4 Thermit Corp.) COFFER, L. Wallace (B ) Pittsburgh Plate Glass Co, Box 750 Heuryetta. Okla. COLLINS, Paul F. (W I) . . . Austenal. Inc. 7001 S. Chicago A ve, Chicago 37, III. COLLINS, William G. (31) Johns-Maaville Corp, Waukegan, III, COLONIAL INSULATOR CO. (Frank Mason) 945 Grant St. Akron 11. Ohio COLOSKY, Beniamin P. School of Ceramics Rutgers UniversityNew Brunswick, N. J. COLUMBIA FIR E BRICK CO. (M . L. Hamaker) 612 First National Bank Bldg. Canton 2, Ohio Extractive Metallurgy Division C O L U M B IA -SO U T H E R N Battelle Memorial Institute CHEM ICA L CORP. (R. W . Miller) 505 Ring Ave, Columbus 1, Ohio One Gateway Center, Pittsburgh 22, Pa. COFFIN, Leon B. (W ) Andover, N. Y. (Alfred University) COMEFORO, J. E. (W) Frenchtown Porcelain Co. Frenchtown, N. J. Roster 19 >MR, Richard L. (W ) 6161 Springdale Blvd. Grand 31ane. Mich. (A C Spark Plug Div. General Motors Corp.l JMMERCIAL DECAL. INC. (Alfred Ouhrssen) Box 7S9 t Liverpool. Ohio j'.RClALORES, INC. . ..ocrt R. Eckel) Clover. S. C. 1MMONS. Charles H.. Jr. (W F I) Forest Lane. R. R. 2, Malvern. Pa. (Foote Mineral Co.) JMJPAGNCCCI. Julius P. (W ) Bay Ridge Specialty Co.. Inc. Stokes Ave., Trencon 10, N. J. JMPANHIA PAULISTA D E MINERACAO (E duardo C. Simonsen) Caixa Postal 3.003, Sao Paulo, Brazil 3NARD, John B. (S) 600 Hawthorne Lane. Mansfield, Ohio (Richland Shale Brick Co.) )NDON. Edward V. (G) 6604 W aterm an Ave.. St. Louis 5, Mo. (Consultant) )N E . Carroll (G) 1387 Virginia Ave.. Columbus 13. Ohio (E . I. du Post de Nemours & Co.) 3NLEY. Jam es M. 363 N. T ran sit St., Lockport, X. Y. )NN , Willi' M. (G) 6312 Indiana Ave., Kansas City 30, Mo. (Consultant) 3NNELL, George A. (B) Pacific Coast Borax Co.. Box 9123 Station S. Los Angeles 3, Calif. 3NNELLY, Daniel S. (R) 2801 N. Park Blvd. Cleveland Heights 18, Ohio (Ohio Crankshaft Co.) DNOVER. Ray C. (RI) Gladding, Mc3ean & Co. 1006 Alcalde Way, Glendale 7. Calif. ONRAD, Charles E.. Jr. (G) T:bbey-Gwens-Ford Glass Co. '. 4273. Charleston 4, W. Va. L AD. K eith (G) Owens-Illinois Box 1019. Oakland 4. Calif. ONROE. Barden A. (G) 93 Gorton St., Corning. N. Y. (Coming Glass Works) ONSOLIDATED FELDSPAR DEPT. INTERNATIONAL MINERALS * CHEMICAL CORP. (W illiam K. Burriss) 20 N. W acker Dr.. Chicago 6. III. ONSOLIDATED GLASS WORKS. L TD . (I. Donen) Box 362 Germiston. Transvaal, South Africa ONSUM ERS GLASS CO.. LTD. (John N. Jordan) Box 4S6, Station B Montreal, Que., Canada ONTARDI. William A. (W I) 206 Highland Ave., Mecuchen, N. J. (Automatic Mfg. Co.) ONWAY. Myron J. (W) 943 O rchard St., Zanesville. Ohio (M osaic T ile Co.) iOOK. A. W. H argreaves Mill Ltd.. Botteslow St. Hanley, Stoke-on-Trent. England iOOK. Eugene M. (G) S09 Broadlawn Terrace. Vineland, N. J. (Kimble Glass Co.) .'O O K . H erm an L . (E F ) ISS3 Beardsley Ave.. Muskegon. Mich. (Norge Div., Borg-Waraer Corp.) TOOK, Leslie J. (M) 1621 Reitex Valley Rd. Lafayette. Calif. (Leslie Cook Laboratories) I P ^ K , L onis S. S3 H ighland Dr. It L ake City 7. Utah COOK. Ralph L. (E FI) 204 Ceramics Bldg. University of Illinois, Urbana. III. Vol. 35, N*o. 10 (1956) COOK, W. Howard (R) Box 131, Norris, Tcnn. (United States Bureau of Mines) COOKE. Charles C. (G) 2858 S. 109th St.. Toledo 11. Ohio (Owens-Illinois) COOKE. David C. (W I) 25 Chestnut St., KaddonncM, N. J. (Universal-Rundle Corp.) COOKE, Robert S. (E) Industrial Centre ~S Quebec. Que., Canada (Crane Steelware. Ltd.) COOKE. William C. (G) Blue Ridge Glass Corp. Kingsport, Tcnn. COOMBS. W. M. (G) Owens-Illinois Bridgeton Plant No. 14, Bridgeton, N. J. COO PER. Alfred R. (G) 45 Orchard St. Jamaica Plain. Mass. (E m hart Mfg. Co.) COOPER. George I. (W ) 401-MackIey Apts., Philadelphia 24, Pa. (Signal Corps Supply Agency) COOPER. Joseph Knoxville. Tioga County, Pa. COO PER. Roger C. (E) Fusite Corp.. 6000 rem view Ave. Cincinnati 13, Ohio COOPER. Walter W. (M) Dow Chemical Co. Inorganic Chemicals Sales Midland, Mich. COOPER. William G. (M) Box 204, Strongsville, Ohio (Ferro Corp.) COORS PORCELAIN CO. (H . W. Ryland) 600 Ninth St. Golden. Colo. COPE. William E. (M) Barclay Machine, Inc. Box 146. Sebring, Ohio COPELAND, S. Spencer C. W. T. Copeland Sc Sons Ltd. Spode Works Stoke-on-Trent, England CORBAN. Wilbur H. (W ) 3198 Dresden Rd.. Zanesville. Ohio (Ceramie Supply Co.) CORBMAN. Mitchell (S) New Jersey Shale Brick i Tile Corp. Box 249, Somerville. N. J. CORBMAN. Morriss (S) New Jersey Shale 3rick & Tile Corp. Box 249. Somerville. N. J. CORDES. John E. (W I) 5333 Humboldt Ave., S. Minneapolis 19, Minn. (Lithium Corp- of America. Inc.) CORHART REFRACTORIES CO- INC. (Frederick S. Thompson) 1600 W. Lee St., Lonisville 10, Ky. CORNING GLASS WORKS (Howard R. Lillie) Coming, N. Y. CORNISH. Frank L. (G) Coming Glass Works, Charleroi, Pa. CORNWELL, George L. (B) 171 Eiseman, Kenmorc 17. N. Y. (Exolon Co.) CORRADA. Marco A. (G) Puerto Rico Glass Corp. Box 4272, San Juan. Puerto Rico CORSON. Robert (GJ) 90 Cayuga St., Seneca Falls, N. Y. (Sylvania Electric Products, Inc.) CORWIN. Rudolph E. (B) Applied Physics Laboratory University of Washington 1013 E. 40th St.. Seattle J. Wash. COSTELLO. R. E. (R ) Zeller Corp. Fort Wayne Rd., Defiance. Ohio COTHRAN. Lawrence Box 2859, Clemson College Sta. Clemson. S. C. COTTON, Nigel Elijah Cotton Ltd. Nelson Pottery. Haniey Sioke-on-Trer.t. Stariord. England COUCH. Albert K .J.R F I) Libbey-Gwer.s-rorc Glass Co. 1701 E. Broadway, Toledo 3, Ohio COUGHANOUR. L. W. ,3 ) 4094 Ben Lcmor.d Dr., Paio Alto, Calif. (General Electric Microwave Lab.) COULTER. William G. (M i 4824 Meatiowiar.c N. \V,, Canton, Ohio ( Pemco Corp.: COUNTS. William S. (3 ) 1422 W. Hom e Ave., riin t, Mich. (A C Spark Plug Div. General Motors Corp.) COURI, Richard A. (G) Box 109, South Woodstock, Conn. (American Optical Co.) COURT, G. Robert (E) 936 Haw thorne Ln., Kankakee. 111. (A. O. Smith Corp-i COURTER, R. ? . (M) Globar Div.. Carborundum Co. Niagara Falls. N. Y. COURTNEY, Scott J. (M) B. F. Drakeafcld & Co. 45-47 Park ? '... New York 7, N. Y. COUTANT. Edward R. (G) General Elecrric Co., 1285 Boston Ave. Bridgeport 2, Conn. COVAN. H. E. CM) R. R. 3, Box 10. Bryan, Texas (Orton Foundation) COWAN. J. G. "Roselands," Billir.gton Haughton, Staff, England (Universal Grinding Wheel Co.) COWAN, R. Guy (DF) 416 Brooklea Dr., Fayetteville. N. Y. (Onondaga Pottery Co.) COWAN, Robert E. (3 J) Westinghouse Atomic Power Div. Box 1468, Pittsburgh 30, Pa. COWELL. J. Robert, Jr. (G) Woodville Lime Products Co. 2140 Jefferson Ave.. Toiedo 2. Ohio COWLES, Robert J. (W ) Quality Components. Inc. St. Marys, pa. COWLES, Roderick J. (R) W alworth Co.. 800 E. First St. South 3ostor. 27, Mass. COWLING, Kenneth W. 79 Norwood Rd. Sheffield 5, England (Thos. Marshall 3c Co., Ltd.) COX. Edwin H. (E ) 20111 Wickneld Ave. Cleveland 22. Ohio (Ferro Corp-) COX. John E. (E) Mellon Institute 4400 Fifth Ave.. P ittsburgh 13. Pa. COX. Paul E. (S r) 520 Canal St.. Baton Rouge 2, La, (Louisiana Geological Survey) COX, Samuel F. (G) Pittsburgh Plate Glass Co. Research Lab., Creighton, Pa. COX. Shaun M. J. A. Jobling Sc Co., Ltd. W ear Glass Works Sunderland. Durham, England COY. John Joel (E) 1689 V ictoria P ark Ave.. Apt. 410 Scarborough. O nt- Canada (Frigidaire Products of Canada. Ltd.) CRAFT, R. S. (R) Findlay Clay Products Co. Washington. Pa. CRAIG, Broce G. (E) 4320 N. 148th. Milwaukee, Wise. (A. O. Smith Corp.) CRAIG. David M.. Jr. (G) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22. Pa. R oster 21 lA IG , James V.\ (R F ) Canadian Reirac:orics, Ltd. 540 Canada Cement Bid?. Montreal 2, Que., Canada lA IG . John D.. Jr. (\V) 14 Emerald Ln.. Levittow n, Pa. ' `'tiro Mi?. Co.; jR, W. E. (VVFI! .ustrial Ceramic Products, Inc. 965 W. Fifth Ave., Columbus 3, Ohio IANDALL. Eugene R. (RI) 253 Gulf St., Milford, Conn. (Mullite Refractories Co.) LAXDALL. James R. (E l) 4514 Chestnut St., Bethesda 14, Md. (National Bureau of Standards) LANDALL. William B. (R l) Box 707, Alfred, N. Y. (O.N.R. Research Project) TANDON, A. S. (G) Am erican W indow Glass Co. 20eh Floor, Farm ers B ank Bid?. P ittsburgh 22, Pa. IA N E CO.. CHATTANOOGA DIV. (W . M. Hamilton) 33rd and Alton Park Blvd. Chattanooga 1, Tcnn. SANE-PACIFIC CO. (A rthur S. Hoch) 330 W. Citrus St.. Colton, Calif. LAVEN, Henry E. (R) Davison Chemical Co. Div. of W. R. Grace & Co., Box 885 Lake Charles, La. LAW FORD, George E. (W F I) 221 Sumner Ave., New Castle, Pa. (Universai-Rundle Corp.) LAWFORD. George S. (M) University of British Columbia B. C. Research Council Vancouver 3, 3. C,, Canada LAW FORD. J. C., Jr. (R ) Jobss-ManviUe Sales Corp. 22 E. 40th St.. New York 16, N. Y. LAWFORD. J. L. (RFI* "4 Foothill Rd. !ta Barbara. Calif. L a - J N , W aiter F. (R) Babcock A Wilcox Co. 1040 N ational City Bank Bldg. Cleveland 14, Ohio LESS, William C. -.'SD Carolina Ceramics, Inc. R.R. 3, Columbia. S. C. LESSY, M erten ;G) E m hart M anufacturing Co. 333 Homestead Ave. H artford 2. Conn. LIDER. Paul H. (E) 1993 Butler Dr.. T urtle Creek, Pa. (United States Steel Corp.) R IS P IN O , Joseph C. (R> Corning Glass Works C orning, N. Y. . A. CRISTALERIAS DEL URUGUAY (Francisco J. Gercar) Comercio 1491 Montevideo. Uruguay ROCKETT. William E. (X) 1215 N. Arlington Ave. Indianapolis. Ind. (Sales Engineer) R O N IN . Leo J. (R) R aytheon M anufacturing Co. Foundry Ave., W altham 54, Mass. RON INGER. George J. (M ) A . J. Wahl. Inc.. 8 Central Ave. . Brocton, N . Y. RO O K . Charles Edmund (W) Los Angeles Chemical Co. 4543 Ardine St.. South Gate, Calif. ROO KSTON . James A. (R I) 1224 E. Jackson St.. Mexico, Mo. P. Green Fire Brick Co.) Il CSVLLE CH IN A CO. vHarry J. Bennett) Crooksville. Ohio IROOM. H enry C. <SJI) 893 Boulevard, Macon, Ga. (B urns Brick Co.) rOL. 35, No. 10 (1955) CROSBY. Donald P. iR i; CURTIS. V.'.liiair. H ,, Jr. lE J) Harbison-Waikcr Refractories Co. 1434 M onte Sar.o Ave., Augusta. Ga. Fulton, Mo. (U. S. Army) CROSKEY, Car; D. <Wj CURTS. R. M. (0 ) 203 Rollingdale Rd. American Potash it Chemical Carp. Catonsviile 2S. Md. 99 Park Ave, New York. N. Y. t Insulator Dept. CUSiCK. C!.arles S. iG) General Electric Co.i Pittsburgh Plats Class Co. CROSS. A. H. B. Wks. -. Ford City, Pa. Brown-Firth Research Lab. CUTHILL, John R. (E l Princess St., She&eld York, Engiand Enameled Metals Section CROSS. Charles D. i s ) National Bureau of Standards 1203 N inth Ave., Jasper. Ala. Washington 25, D. C. (Natco Corp.) CUTLER, Ivan 3. (3 ; CROSSAN. W. A. (S) 220 Mines 31dg, University of Utah Metropolitan Brick, inc. Salt Lake City 12. Utah 1017 Renkert Bldg., Canton 2, Ohio CZARNECKI. Kamil 3. CROSSLEY M ACHINE CO. 29, W hitehall 301 Monmouth St.. T renton 9, X. J. London S. W. 1, E ngland CROUCH. Lester A. (Aglite. Ltd.) Georgia Institute of Technology CZECHOSLOVAK CERAMIC AND Box 270. Atlanta, Ga. GLASS SOCIETY (R. Barta) CROWE. Samuel H.. Jr. (G) Technicka ul.c.5 416 Mississippi Ave.. Crystal City, Mo. Praha X IX . Czechoslovakia (Pittsburgh Plate Glass Co.) CROWELL. Robert W. (G) Kimble Glass Co., 711 Southwood Ave. Columbus. Ohio CROWLEY. Henry L. (B) 365 Forest Rd.. South Orange, N. J. (H enry L. Crowley it Co., Inc.) D D'ADRIAX. Vincent L. D. (G) Mississippi Vailey Research L ab, Inc. 901 S. 13th S t , St. Louis 3, Mo. DAGER. Prabert W. (M FI) CROWLEY. Michael S. (I) 5628 Greenbush, Van Nuys, Calif. Pennsylvania State University (H . C. Spinks C a y Co.) Dept, of Geophysics & Geochemistry DALE. Alfred J. 223 Mineral Set. Bldg. Johnson Bros. (Haoley) Ltd. University Park, Pa. Stoke-on-Trent, England CRUIKSHANK. C. L. (M) DALEY'. F ran k E. (M) Great Lakes Foundry Sand Co. Godfrey L. Cabot. Inc. 720 United Artists Bldg. 46 Bayard S t, New Brunswick, N. J. Detroit 26. Mich. DALTON. Robert H. (G) CUMMINGS, J. M. (M) 234 Deievan A ve, Corning, N. Y. British Columbia Cement Co.. Ltd. (Corning Glass W orks) B. C. Cement Bldg. DAMERON. Joseph J. (S) Victoria. 3. C., Canada Coates C o , Box 935. Austin. Texas CUMMINS, Arthur 3. 13) Morning Glory Rd., Bound Brook, N. J. DANIELSON, R. R. iS F I) 120 Richm ond T errace. Rahway, N. J. (Johns-Manville Corp.) CUMMINS. Robert K. (G) (Metal 4 Thermit Corp.) DANK, Milton (G) General Electric Co., 1153 E. 152nd St. Cleveland 10, Ohio Owens-Illinois. General Research Div. CUNLIFFE, J. A. (S) Toledo 1, Ohio 266 Seventh St. DANKS. William H. (G) Medicine Hat. Alta.. Canada 215 Mississipci A ve, Crystal City, Mo. (Medicine Hat Brick ie Tile Co., Ltd.) (Pittsburgh Plate Glass Co.) CUNNINGHAM, James A. (S) DARBY. George M. (M ) Adams Clay Products Co.. Box 226 61 Washington A ve, Westport, Conn. Martinsville, Ind. (Dorr-Oliver. Inc.) CUNNINGHAM. Robert J. (G) DARLING. D. G. CS) D ark Ave., R.R. S. Newark. Ohio Toronto Brick C o, Ltd. (Owens-Cornin? Fiberglas Corp.) 423 Bayview Ave. CUPIDRO. Vincent N. (W ) Toronto 17, O n t, Canada 2204 Kirchoff Rd. DARNELL. Harmon C. (S) Arlington Heights, 111. Murray Tile C o, In c , Qoverport, Ky. (Radio Materials Corp.) DARRAH. W. A. (E ) CURCIO, Anthony L. (W I) 901 N. Oak Park Blvd, Oak Park, III. 21 Church SL, Bound Brook. X. J. (Continental Industrial Engineers, Inc.) (General Ceramics Corp.) DAS GU PTA, A. K. (W ) - ` CURRAN. EDWARD A llen-3radley Co. ENGINEERING. LTD . (D. Ryan) 136 W. Greeneid Ave. Cardiff. Wales Milwaukee 4, W ise. CURRAN. Martin T. DAUMKE. Arthur H. (W) Box S62. Alfred, N. Y. 17 W. 170 Hillside L n , H insdale, III. CURRAN. Robert (RI) (H arshaw Chemical Co.) DAUWALTER. A. C. (S) 73-08 33th Ave. Jackson Heights 72, N. Y. W. S. Dickey Clay Mfg. Co. , (Plibrico Co.) 607 Commerce T ru st Bldg. Kansas City 6, Mo. CURRIE, Thomas E- (S) DAVENPORT, W arren H. (R) 331 W. College A ve, State College, Pa. 33 Paine S t , W orcester 3, Mass. (Pennsylvania State University) (N orton Co.) CURRY. William J.. Jr. <R) DAVEY. E arl R. (W ) Hiram Swank's Sons, Box 630 Canadian Ohio Brass C o, Ltd. Johnstown, Pa. Niagara Falls. O n t, Canada CURTIS. Carl E. (R I) DAVEY. Frederick K. (B) R. R. 3, Kingston, Tenn. Carborundum Co. (Union Carbide Nuclear Corp.) N iagara Falls. N. Y. CURTIS. Miles E. (E) DAVIDSON. Robert W. (R) 301 Brunswick Rd.. Louisville 7, Ky. N orth Am erican Refractories Co. (Ferro Corp.) Curwensville. Pa. R oster 23 )A V tS , Chcjier A. (\V I) Parle Lake Ave., Titusville, N. J. (American Radiator Si Standard Sanitary Carp.) 1AVIES. Edward G. (G) Dominion Glass Co . Ltd. Wallaceburg, Ont., Canada ) T.S, Thomas H. (G) Jllon Institute. 44Q0 Fifth Ave. Pittsburgh 13. Pa. 1AVIS. Earl K. (G) Bauseh Si Lomb Optical Co. Rochester, X. Y. >AVIS F IR E 3R IC K CO. Oak Hiil. Ohio AVIS. Harry E. (W F l) Universal Potteries. Inc. Cambridge. Ohio AVIS, II. M. (E) Pennsylvania State University Mineral Industries Bldg. University Park. Pa. AVIS. James K. (G) 144 High Rd.. Corning. N'. Y. (Corning Glass W orks' AVIS, John A.. Sr. (W ) Sentry Sanitary Corp. Box 427. M annington, W. Va. AVIS. X. 3. (M) 77 Metcalfe St., Rm. 305 Ottawa 4. Ont.. Canada (Canadian Flint it Spar Dept.) AVIS. Sam H.. Jr. <W) S08 X. Howard, Robinson, III. (Case Mfg. Corp.) AVIS. William A. (G) 1421 Second St. M. R.. Tarentum , Pa. (P ittsburgh Plate Glass Co.) AY. Arthur L. (Honorary. G) 9113 Old Georgetown Rd. Berhesda 14, Md. AY. Britton T. (R) Am erican Fire Clay i Products Co. 3 o x 157. Canrieid. Ohio AY. Chares M. ,R ) Mey Dolomite Corp. hi 902, ?15 Olive St. .... Louis 1. Mo. AY. Deibert E. 1003 Park St.. Roda. Mo. AY. Frank. Jr. (M) Coming Glass Works. Coming. X. Y. AY. Jack 7. W il United States Ceramic Tile Co. F ourth A W alnut X'. E.. Canton. Ohio AY. Loren L. (GJ) 240! X. Mesa. Ant. 4, El Paso. Texas ( Pittsburgh Plate Glass Co.) AY. Ralph X. ;G FI) I.ihhey-Owens-Ford Glass Co. 1701 E. Broadway. Toledo S, Ohio AY. Robert 3. (S I) 18 Lynnwood Dr.. R. R. 3. Morris. III. (M orris G ay Products Co.) ADERICK. James W. (B) 1011 Norvell Dr. Signal Mountain. Ter.n. (American Lava Corp.) ADWYLER. Earnest W. (RI) 2S99 Glenmawr Ave. Columbus 2. Ohio (United States Army) LAX. Estus R. (BJ) 14(6 Tahor Ave.. Dayton 10. Ohio ( X atinnal Cash Register Co.) LAR. Paul S. (B FI) Virginia Polytechnic Institute llox 205. Blacksburg, Va. RECK. Hubert O. (M) 5105 Belmont, Apt. 3. Houston 5. Texas ( Baruid Div.. National Lead Co.) BEXHAM. W. S. (RF!> T'-ited States Steel Corp. IWiUiam Penn PI. Jburgh 30. Pa. CKER. Alfred R. (W ) 811 X. Seventh St.. Cambridge. Ohio (Champion Spark Plug Co.) DECKER. Edgar A. (M) G. S. Robins & Co. 12$ Chouteau, St. Louis 2. Mo. DECKER, Edward L. ,\V . Sum m er St.. WiUtamstown, Mass. (Sprague Electric Corp.) DE COURSEY. Donald T. (E ) 57 Prospect Park South West Brooklyn 13, X. Y. DEETH. H. R. (M l American Xcpheiine Ltd. 22 King St. \ \ \ . Rm. 2230 Toronto, Ont., Canada de FELICE, Ralph (D ; 28 Shore Cliff PI. Great Xeck. L. I.. X. Y. (Abels, W asserberg & Co.) DEIGXAX. Charles J. (S I) 305 Burkey Ave.. Reynoldsburg, Ohio (Clavcraft Co.) DE1RO. John H. (E) Xorris-Therm ador Corp. 5215 Boyle Ave., Los Angeles, Calif. DE LA ROY. Hans (\V.| Delco Radio Div. General Motors Corp. Kokomo. Ind. DELAWARE CLAY CO. (Homer \V. Wilson I 2ox 322 Delaware. Ohio de LEEUW , Peter Eisenberg it Co.. Inc. Central Post Office Box 323 Tokyo. Japan DELGADO. Cyril B. (G) Tile Glass Industry 55 W. 42nd St.. New York 36. X. Y. DeLONG. Hermon W,, III (G) 67 Main St.. Dansville. X. Y. (Department of Public Works) DEMAISOX. R. J. (R ) Quigley Co.. Inc.. 415 Madison Ave. Xew York 17, X. Y. DeMARlA. Vincent C. (Gi oytvania Electric xTocucts. Inc. Box 6. Bayside. X. Y. DEMUTH GLASS W ORKS. INC. 'George 7. Young) Box 629 Parkershurg. W. Va. DENISON EN G IN EER IN G CO.. TH E (W . C. Denison) 1160 Dublin Rd. Columbus 16. Ohio DENISON. George 'V. (SF ) Ohio Clay Co.. Box 1776 Cleveland 5. Ohio DENISON. John C.. Jr. (G) John C. Denison & Son Co.. Box 63 Rochester. Pa. DENISON. Norman E. (S) Ohio Clay Co.. Bax 1776 Cleveland 5, Ohio DENISON. W. C. (M) The Denison Engineering Co. 1160 Dublin Rd.. Columbus 16, Ohio DENMAN. Cedric E. (S) Great Bend Brick & Tile Co.. Ine. Box 53. Great Bend. Kane, de PABLO. Liberto Ohio State University Lord Hall. Rm. 113 Columbus 10. Ohio Dk PIOLEXC. Gerard (X) Saint Guhain. Inc. 500 Fifth Ave.. Xew York 36, X. Y. dePRO SSE. V ictor A. (E l) 2164 A rthur Ave.. Lakewood 7, Ohio ( Ferro Corp.) DeREMER. John W . (R I) 501 Arizona Dr.. New Kensington, Pa. (American Window Glass Co.) DERGE, Gerhard (X) Carnegie Institute of Technology Pittsburgh 13, Pa. DERIXGER, W. A. (E F I) A. O. Smith Corp. 3533 X. 27th St.. Milwaukee 1. Wise. deROUX. Juan Ramon (I) Box 1486. Panama. Rep. of Panama ( Panama Clay Products Co.. Ine.) >u. :r>. No. io (lO-iO) DERR. Robert H. (W) Certain-Teed Products Corp. 204 Park Pittsburgh 9, Pa. DerSARKISSlAN. Michael Gaspcrt. N. Y. DESAIX. Herbert A. (S I) 122 Jefferson Park Dr. Huntington, W, Va. ( Barboursviile Clay Mfg. Co.) DESENNE. Claude M. (S) Cote de l'Eglise Boischatel. Co. Montmorency, Que.. Canada (Citadel 3rick Ltd.) DESMARQUEST. Louis Institut de Cramique Franaise 6 Grande-Rue Sevres (S. it O.), France DETAMORE. Walter A. (S) Barium Reduction Corp. South Charleston 3. W. Va. DEURVORST, F . B. M. Het Zonuehuis, Terborg, Holland (Koninklijke Fabrieken Diepenbrock it Reigen X. V.) DEUTSCHE GLASTECHNISCHE GESELLSCHAFT Untermainkai 12 Frankfurt A. M,, Germany DEUTSCHE KERAMISCHE GESELLSCHAFT Reuterstrasse 235 Bonn/Rhein, Germany DEUTSCHER. Jerom e S. (S I) R.R. 1, Box 933. 4199 Temescal Ave. Norco. Calif. (Maybow. Inc.) DeVILBISS CO. (E. F. Frey) Toledo I. Ohio de VILLE. R airh W. (I) Harvard L'niversity Graduate School of Business Soldiers Fieid, Boston 63, Mass. DEVLIN. James F. (E JI) 1523 E. 33rd St., Baltim ore IS. Md. iPemco Corp.) DeVOE. Charles F. (C-) 38 W. Fourth St.. Corning. X. Y. (Coming Glass Works) DeVRIES. Robert C. (3 ) 2012 Hudson St., Schenectady. X. Y. (General Electric Co.) DEW. Robert J.. Jr. (B) Ceram-Chcm. Research Lab. University of Tam pa, Tam pa. Fla. DEWEY. B. F. (W ) 42 Summit St.. LeRoy, N. Y. (Lapp Insuiator Co.) DEWEY. John L. (R) Reynolds Metals Co. Box 191. Sheffield. Ala. de VVYS, E. Christiaan (B) Chelsea Dr.. R. R. 2 Granville Heights. Ohio (Owens-Corning Fiberglas Corp.) DEXHEIM ER. E. C. (E) 917 Country Club Drive St. Louis 21, Mo. DEYO. R. Daniel (R) 104 Dogwood, Park Forest, 111. (United States Steel Corp.) DIAMOND ALKALI CO. (L. T. Welshans) Cement-Coke Div. 300 Union Commerce Bldg. Cleveland 14, Ohio DIAMOND, Grant S. (R FI) Electro Refractories 4 Abrasives Coro. 344 Delaware Ave., Buffalo 2, N. Y. DIAMOND. Jacob J. (B) National Bureau of Standards Conn. Ave. it Van Ness St.. N. W. Washington 25. D. C. DIAZ. Jose J. (I) Fabrics Naeional de Loza de Pence S. A. Box 13. Penco. Chile di BENEDETTO. Bernard Box 847. Alfred. X. Y. DICK, Garence H. (G) 1013 Gordon St.. Natrona Heights. Pa. (Pittsburgh Plate Glass Co.) R oster 25 IK . William O.. Jr. 37 Meadow Brook Apts. C orning, N. Y. IK A S. Charles H. i E) 1524 Sunset Rd., Chattanooga. Tenn. (Samuei Stamping It Enameling Co.) CKENS, H. A. :n Porcelains (Aust.) Pry. Ltd. .Separation St. iNurticote, Victoria. Australia CKEY, K erben R. iS ) 26 Regent S t._ St. Thomas, Ont., Canada (Canada Vitrified Products. Ltd.) CKEY, John M.. Jr. (SI) H anlev Co.. Summerville. Pa. ETERT. Harry W. (3 ) H a rry W. Dietere Co. 1214 Virginia Dr., Kerrviile, Texas ETR1CK. Waldemar F. (3) 1209 Potomac St.. X. W. W ashington 7, D. C. (U nited States 3ureau of Mines) ETTERLE, Edwin W. (W I) 2824 Monteith Dr. Los Angeles 42, Calif. (Ferro Carp.) ETZ, Earl D. S82 Hess Rd.. Coiumbus 10. Ohio ETZEL. Adolf Max-Plar.ck-Institut fur Stlikatforschur.g, Wurzburg, Germany Ncur.erpintz 2 LAZZARO. John F. 4013 34tn S., Seattle 8, Wash. LLARD, William F.. Jr. (S) 2125 E. Side Court. Augusta. Ga. (M erry Eros. Brick 4 Tile Co.) ELENDER. Richard D,, Jr. (W) 8 Sunny'orook Trail Signal Mountain, Tenn. (American Lava Carp.) .'LLIARD. Paul D. (GI) 1215 E. Wheeling St., Lancaster, Ohia (Anchor Hocxing Glass Carp.) .1 "GHAM. Robert ?. (W ) : Cheyenne St.. Golden. Colo. . . aors Porcelain Ca.) LLON, C. L. (G) L atentere Marble Glass Ca. Box 71707, Los Angeles 1. Calif. iLLO N , Zale (W i 56 River'.awn Dr.. Fair Haven. N. J. (A tlantic Tiie Mfg. Co.l 1NGLEDINE. H. F. :S) National Sewer Pipe Ltd. 230 Wer.tworth St.. N. Hamilton. Ont.. Canada (X G LSR. Edward ! .. Jr. ( R) C arborundum Co.. Refractories Div. Niagara Fails. N. Y. INGWALL. Andrew (G) 588 Grove St.. Upper Montclair, X. J. (Consulting Scientist) INGW ALL. Andrew G. F. (G) 588 Grove St.. Upper Montclair, N. J. (R C A Victor) IP P E L L . L. V. (R) 1407 Cherry Lawn Ave. R. R. 3. Owosso. Mich. fM id-W est Abrasive Co.) IRKSEN, A. J. (G) American Potash 4 Chemical Corp. 99 Park Ave.. New York 16, N. Y. [REAM . A rthur C. (G) 208 N. Talley Ave.. Muncie. Ind. (Ball Bros. Co.. Inc.) IST IL LA TO R . Philip R. (W ) Jackson Vitrified China Co. 2 West St.. Pelham Manor 65, N. Y. ITHRIDG E. Edward H. (E) Richm ond R adiator Co.. Monaca, Pa. >IXON. Anna Lane (D) " 5 X. Fourth St.. Burlington, Iowa l ', Gene (R ) anite Mining Corp., Cullen. Va. >IXON, JO SE PH . CRUCIBLE CO. (W . R. Wyekoff) 167 Wayne St. Jersey City 3. N. J. OL. 35, N*o. 10 (1950) DJAJOES. S. Klitren Kidul GK 6/298 Jogjakarta, Java, Indonesia DLUGOZIMA. W. R. (W I) R. R. 19, South View Dr. East Liverpool. Ohio (Patterson Foundry 4 Machine Co.) DODD, Charles M. ( S r i) Dept, of Ceramic Engineering Iowa State College, Ames. Iowa DODGE, Alfred W. (G) Hazel-Atlas Glass Co., 126 Market St. Zanesville, Ohio DOERSELN, Kenneth P. (M) Silk City Tool dc M achine Works 221 Seventh Ave., H awthorne, N, J. DOLL. Charles E. (W ) Mount Clemens Pottery Co. Mount Clemens, Mich. DOLPH. James L. (E) 1017 Vermont Ave., Apt. 8 Pittsburgh 34, Pa. (Ingram -R ichardson Mfg. Co.) DOM INION M INERALS DIV.. RIVERTON LIME 4 STONE CO,, INC. (V. V. Kelsey) Piney River, Va. DONAHEY, John W. (GI) Box 191, Paoli, Pa. (Foote Mineral Co.) DONEN, I. Consolidated Glass Works Ltd. Box 562, Gcrmiston Transvaal, South Africa DONEY, Louis M. (B) Mackin Lane, R. R. 17 . Knoxville, Tenn. (Oak Ridge National Lab.) DONLEY, John C. Ohio State University Engineering Experiment Station Columbus 10, Ohio DO NNENW IRTH . A. L. fR I) Carborundum Co., Falconer, N. Y. DORA. Joseph C. (E) 3246 West 62r.d PL, Chicago, III. (Crane Co.) DORAN, Robert r . (GI) Sylvania Electric Products. Inc. Cottage PL. Mineoia, N. Y. DORF, Arthur L. 331 W. College Ave., State College, Pa. DORN. Alvah J. (G) 4 Oak wood Dr., Box 152 Corning, N. Y. (Corning Glass W orks) DORN. G. Neal (SI) 1015 Kemp Ave., Ironton, Ohio (Carlyle Tile Co.) DORSETT. O. A. (W ) Knox Porcelain Corp.. Knoxville, Tenn. DORSEY, Baird L. (R) 300 Walnut Rd., Pittsburgh 2, Pa. (Jones & Laughlin Steel Corp.) DORSEY. John J. (W I) P. R. Mallory & Co., Inc. 3029 E. Washington St. Indianapolis 6, Ind. DOTY, Henry S. (R) Commercialores. Inc. 39 Cortlandt St.. New York 7. N. Y. DOUGHERTY. Leon A. (W ) 370 North St., Sun Prairie, Wise. (Wisconsin Porcelain Co.) DOUGHERTY. Robert W .' (S) L indberg Engineering Co. Box 306. Newton Square, Pa. DOUGHERTY. W. E. (MF) 1625 Barr Ave.. Pittsburgh 5, Pa. (O. Hommel Co.) DOUGLAS. Edward A. (E ) 104 Gainsborough, Apt. 2B Boston, Mass. (Bettinger Corp.) DOUGLAS, Richmond Douglas Firebrick Co., Ltd. Dairy, Ayrshire. Scotland DOUGLAS. R. W. Society of Glass Technology ''Thornton." Hallam Gate Rd Shefiield 10. England DOWLING. Robert r. (G) American Opiical Co. Southbr-.dge, Mass DOWNS, Charles D. (W ) Columbian Carbon Co. Mapico Color Div. 601 Cass S:.. Trentor. 10, X. J. DRAKE, M. Ellis (D) Alfred University, Alfred, N. Y. DRA KENFELD, 3 . F. & CO. (Scott J. Courtney) 43--47 Park PI. New York 7, X. Y. DRAKER. H arry C. (M) 3S600 Courtlacd Dr., Willoughby, Ohio (Harshaw Chemical Co.) DRAMMENS GLASSVERK (Ragnar Tanberg) Drammen, Norway DRAPER, Perry E. (W ) Mansneid Sanitary Pottery, Inc. Perrysville. Ohio DRECHSEL. Helmut E. (C) Smith Kline 4 French Labs. 1530 Spring Garden St. Philadelphia I. Pa. DRESSLE?.. Philip (M F I) Swindell-Dressicr Corp., Box 1888 Pittsburgh 50. Pa. DREYLING. Lewis J. (R) 229 Miiltowr. Rd., Milltown, N. J. (Quigiey Co.. Inc.) DROUHARD. W. J. (W I) Mansfield Sanitary Pottery. Inc. Perrysviile. Ohio DRUCKER. Julius Farbenfabriken Bayer Aktiengesellschaft, 7-9, Rheimtferstr. Krefeid-Uerdingcn. Germany DRUMMOND. Charies H. <G) 1639 Cass Rd.. Maumee, Ohio (O w en s-Illin o is) DRUMMOND. V '.V. G) 214 Crim St., Bowling Green. Ohio (Libbey-Owens-Ford Glass Co.) DU3ER. William Box 1318. Georgia Tech., Atlanta. Ga DL'SLER. Robert H. (W) Crane-Pacific Co. 330 W. Citrus St.. Colton. Calif. DuBOIS. K. B. (M F I) Golding-Keene Co. 1401 New Y ork Ave.. T renton. N. J. DUCKWORTH. W inston (3F I) Battelie Memorial Institute SOS King Ave., Columbus 1. Ohio DUDDING. 3. P. International Commission on Glass Research Laboratories General Electric Co.. Ltd. Wembley, Middlesex, England DUE. Herbert J. (W ) II Scoles Ave.. Clifton, N. J. (St. Joseph Lead Co.) .. . - DUECXER. Heym an C. (G) 28927 Emerson Way, Inkster. Mich. fFord M otor Co.) DUEVEL. Charies O.. Jr. (G) American Therm os Products Co. Therm os Ave.. Norwich. Conn. DUEY. Robert K. (S) Southern Lightweight Aggregate Corp. Box 9138, Richm ond 27. Va. DUFF. R. D. (G) Owens-Illinois Box 1035, Toledo 1. Ohio DUFFY. J. P. fS) Stillwater C a y Products Co. Lock Drawer 32, Uhrichsville. Ohio DU FRESNE. Robert S. (R) 3125 Fairmount, La Crescenta. Calif. (Gladding, McBean & Co.) DUGAN, Robert T. Box 1844, Midland, Texas Roster 2' ) LOG AN. /. (Gl Walsh Refractories Corp. 101 Ferry St., St. Louis 7, Mo. )U H R S3E N . Alfred (D l Coir.mercial Decal. !r.e. 3ox 759. East Liverpool, Ohio John J. (\V) jx 33. Saxonburg, Pa. Ju-Co Ceramics Co.) 1UL3ERG, Irvin? (R) 2S4 N. Allegheny St.. Beiieionte, Pa. (J. H. France Refractories Co.) IDLIN'. Francis H. 7728 Westmoreland Dr., Sarasota. Fla. UNSECK, Norman J. (R) International Minerals Sc Chemical Corp. 20 X. W acker Dr.. Chicago 6, 111. 1UNCAN, ;. Earle (G) Pittsburgh Plate Glass Co. Research Lab.. Creighton. Pa. JL'NCAN. Russell F. (B) 209 Franklin Dr., Berea, Ohio (Ferro Corp.) UN COM BE. George H.. Jr. (S F ) 150 E. Frambes Ave., Columbus 1, Ohio (Evans 3rick Co.) CNGAN. Robert H. (BI) 6850 Meauowbrook Manor St. Louis Park. Minn. (M inneapolis-Honeywell Reg. Co.) C N N . H. E. (M ) Suite 206. 300 Mt. Lebanon Blvd. Pittsburgh 33, Pa. (Vanadium Corp. of America) L'N S . John P. (G) C orning Glass W orks, Corning. N. Y. >UNN, Peter E. (G) Rauiana Corp.. 4245 N. Knox Ave. Chicago 41, ill. 1UNNICAN. W ard G. (G) 277 E. Seventh St.. Clifton. N. J. (Becton. Dickinson 3t Co.) iUPLLW . ;.. Jr. i3 F i) 0 North Ave.. Fanwood, N. J. hbcock it Wiicox Co.) u - J N T , E. I., de NEM OURS & CO.. IN C . (John M. Olsen) Electrechemicals Dept. Wilmington 98. Del. URHAM . Cari T. iZ i 742 Wir.ti .or Ave.. S. W. Roanoke. Va. (G eneral Electric Co.) >URST. W illiam A. (M) 309 Madison St.. St. Mao's, Pa. (Stackpole Carbon Co.) >UWEZ. Pol (3) California Inst, of Technology Pasadena. Calif. )YXES. Marvin W. (G) Van Dyne Quarte Works Box 148. St. Charles, III. >YRE. W arren T. (E) 317 Estaugh Ave., Hadclomeld. N*. J. ( Universal-Rundle Corp.) )ZURA. Edward J. (B) Am erican Optical Co. Research Center Southbridge. Mass. E AGLE. j. Eugene (M FI) 3202 McShane Way, Baltimore 22, Md. (Pernco Corp.) A G L E -PIC H E R CO. (D. R. Carter) American Bldg., Cincinnati 1, Ohio LARHART. William H. (G) RCA Victor. Engineering Dept. S. Adams St.. Marion. Ind. t> " ' . Fred C. lx 84, Broadalbin. N. Y. L J. Alfred (B) 1621 S. El Molino St. A lham bra. Calif. (Consolidated Electrodynamics Corp.) 7ol. .1.-). No. 10 (lOfi) EASTER, Geurge J. (R F i) Electro Refractories !c Abrasives Corp, Willett Rd., Bunalo 19. S'. Y. EBERSOLE. Robert A. (R) Chisholm, Boyd it White Co. 610 W. 57th St.. Chicago 21, III. ECKEL. Albert R. i.R i Commeroialores. Inc., Cover. S. C. ECKEL. Harold A. Trinidad C'.ay Products. Ltd. 44, South Quay. Port of Spain Trinidad, B. W. I. ECKLEY, J. R. (R) Aluminum Co. of America 1501 Alcoa Bldg., Pittsburgh 19, Pa. ECONOMOS, George (W) Massachusetts Institute of Technology 77 Massachusetts Ave., Rm. 20C-001 Cambridge 39. Mass. EDGAR. Albert C. (M ) Edgar Plastic Kaolin Co.. Edgar, Fla. EDGAR, Clement B. (R) M. H. Detrick Co.. 1620 Oliver Bldg. Pittsburgh 22. Pa. EDGAR PLASTIC KAOLIN CO. (Albert C. Edgar) Edgar. Fla. EDLIN. Vernon (B) 6712 Chappel Ave.. Chicago 49, (11. (Armour Research Foundation) EDWARDS. F. M. (W i 4605 Crosby Rd.. Knoxville. Tenn. (Knox Porcelain Corp.) EDWARDS. J. B. (S) Reliance Clay Products, Box 13226 Dallas 20. Texas EGERTON, Lawson fB) Bell Telephone Labs.. Inc. Murray Hill. N. J. F.HLERS. Ernest G. fB) Ohio State University Dept, of Mineralogy. Columbus. Ohio EHLERS. G. Milton (W ) Aerovox Corp.. 742 3el1eville Ave. New Bedford. Mass. EHMA.Y. Roy G. (G F I) 323 E. Hamilton Ave. State College. Pa. fPennsylvania State University) EHRLICH. Raphael H. (S) 4039 X. Central Expressway Dallas 4. Texas (Crown Brie:: Mfg. Co.) F.ICHBa UM. Barlane R. E. Bend Park. 4 May Court Red Oaks Mill. Poughkeepsie. N. Y. EIDE. Aiwin C. (E) American Zinc Sales Co.. Box 227 Columhus 16. Ohio EISEN . John B. (R) Box 27. W aterloo. Wise. CRar-O-Vac Co.) EISENBERG. Marvin (F.) Montaine Corp. 2446 S. Prairie Ave.. Chicago 16. 111. EISENBERG. Meyer (W) 64 Chester Circle New Brunswick. N. J. fArchitectural T iling Co.. Inc.) ETSS. Roger L. Box 827. Alfred. X. Y. EITEL. Wilhelm (BI) Dir. of Inst, of Silicate Research University of Toledo. Toledo 6. Ohio EXDAHL. W. Graydon (G) Johns-Manville Research Center Manviile. N. J. EK E D A H L J. Charles (R ) 1113 N. Raynor Ave.. Joliet. TIL (Illinois Clay Products Co.) ELDER. J. C. (W I) Robertson Mfg. Co., Box 848 Trenton 5. N. J. ELECTRIC AUTO-LITE CO.. SPARE PLUG DIV. (Robert Twells) Box 231. Fostoria. Ohio ELECTRO REFRACTORIES & ABRASIVES CORP. (Grant S. Diamond) 344 Delaware Ave., Buffalo 2. N. Y. E L JE R CO.. Enamel-Ware Div. (L. A. Bateman! Salem, Ohio ELLARD. Earle R. (R D 344 Clinton Ave.. Timn, Ohio (Basic. Inc.i ELLEFSON, B. S. (G) Sylvania Electric Products. Inc. 1740 3roadwav, New York 19, N. Y. ELL1NGSW ORTH. Martin K. 5320 .Midwood Ave., Baltimore 12. Md. ELLIOTT. Amos W. (B) Covered Wagon Ranch Cloverdale. Calif. E L L IO T T , C. Franklin 3301 Pinewood Ave., Apt 41 Chattanooga, Tenn. ELLIO TT. George 3 Hillpark Gardens Edinburgh 4, Scotland I National Coal Board) ELLISON. Henry W. (G) 169 E. Third St., Corning, N. Y. (Corning Glass Works) ELLISON. R. W. (R ) 1551 E. Loma Alta Dr. Altacena. Calif. (Gladding, McBean & Co.) ELMER. Jack T. (X> IS'K) Woodland Ave. Santa Clara. Calif. ELMER. Thomas H. (B) 219 E. High St., Painted Post. N. Y. (Corning ClaS3 W orks) ELOSUA. Bernardo (W) Ladrillera Monterrey, S. A. Box 360. Monterrey, N. L., Mexico ELSTON\ Keith (W I) 117 Somerset Ave.. Pittsneld, Mass. (General Electric Co.) ELY. William G. (G) Pittsburgh Plate Glass Co. 1 Gatewav Center. Pittsburgh 22, Pa. EMANUEL. E. C. <G) Armstrong Cork Co. Research & Development Center Lancaster. Pa. EM HA RT M ANUFACTURING CO. (W . H. Shorter) 533 Homestead Ave. Hartford 2. Conn. EM HI3ER. Donald (R) 1105 Eighth Ave.. Braexenridge, Pa. (Pittsburgh Plate Glass Co.) EMISON. M. Hershel (G) Coming Glass Works Charleroi Div., Charleroi. ?a. EM LEY. William S. (W ) W. Maitland Lane. R. R. 3 New Castle, Pa. fSnenango China. Inc.) EM M ERICH. Liberata (G) Pennsylvania State University Mineral Industries Library University Park. Pa. EM RICH. Allen H. 1799 Franklin Ave.. Columbus S, Ohio EM RICH . Barry R. (R JI) . . 501 Quincy N. E.. Apt. E ' ~ Albuquerque. N. M. (K aiser Aluminum 8c Chemical Corp.) EMRICH. Emerson W. (MI) R. T. Vanderbilt Laboratories East Norwalk. Conn. EM RICH. Harold W. (SI) 1560 S. Kram eria. Denver. Colo. ( Denver Brick & Pipe Co.) EXBERG. Christer Tegellaboratoriet (Brick Laboratory) Drottning Kristinas vag 45 Stockholm 0 . Sweden ENGLERT. William J. (G) 304 Vernon St.. New Kensington, Pa. (Pittsburgh Plate Glass Co.) ENGLISH CHINA CLAYS SALES CORF. 551 Fifth Ave.. New York 17, N. Y. ENIIUS. Hans Gosta Aktiebolaget Malardalens Tegclbruk Ericsbergsgatan 27 Stockholm 3, Sweden R oster 29 ENLOE. Scroop \V. i ll I Dilliboro, N. C. (K arris C ay Co ; ENLOE. Scroop \V,, Jr. <M) H arris Ciay Co.. Spruce Pine. V C. ENOCH. Charles R. i S 320 Spring Ln.. Bridgeport. Pa. I Refractory Specialty Co l !NOS. '-V. Kenneth 607 Rutledge Ave.. Charleston, S. C. EPSTEIN . Edward, ;r. (R) Laclede-Christy Co Div. H ."rC. Porter Co. a70 Ridgevrood Ave.. St. Louis, Mo. ERARD. Edward (G) Vidrio N'eutro. 5. A. Prolongation Calle <ie la Rosa No. 9. Atxcapotzalco, D. F., Mexico ERICKSON. A. Alfred (G) 8- Pershing St.. Corning. N. Y. (Corning Glass Works) ERICKSON. Aller. J. (G) 4239 E. 7ath St., Seattle 15, Wash. (Northwestern Glass Co.) ER IE RESISTOR CORP. ( Bobby L. Joynt r) 644 w. 12th St.. Erie. Pa. ERNST. Walter S. (M l 2723 E. Fifth Ave.. Knoxville. Term. (Volunteer Portland Cement Co.) ERSLEY, Emmett J. (GJ) R. R. I. Box 352-3 24585 W ayntan St.. Newhall. Calif. (Thatcher Glass Mfg. Co.) ERVIN. Guy. Jr. (B) Research Laboratory, Norton Cn W orcester, Mass. E R W IN . Lee R. (G) 419 T octno. Duarte. Calif. (Carrier Corp.) ERZEN. Frank C. (E ) 731 S Greenberry Dr. West Covina. Calif. (Bulwark Corp. oi .America) ESCHEN BURG. Robert II Ftorcvi|le. Texas 5SELSTY X . W illard A. c/o American Embassy New Delhi (Mail Room) Department of State Washington 25, D C. ESTES. Joseph F ( W Hseger retteries. Inc. 7 Maiden Lane. Dundee. III. E TH ER ED G E. Otis X. <M) Box 252. Gordon, Ga. (Southern Clays. Inc.) ETR IS. Samuel F. (R) 100 W. Nippon St. Philadelphia 19. Pa. (Am erican Society (or Testing Materials 1 EU BAN K. W illiam R. (B) 2301 Hudson Rd.. St. Paul 6, Minn. (M innesota M ining & M(g. Co.) EUBANKS. Alfred G. (E) 10802 Stella Court. Kensington, Md. (National Bureau of Standards) EUSN ER. George R. (R> 1025 Summitt St., McKeesport. Pa. (United States Steel Corp.) EVANS. Charles E. (M) 2401 X orthglcn Dr. Colum bus 24. Ohio (T itanium Alloy Mfg. Div. N ational Lead Co.) EVAN S. Daniel Owen CG) Hillcrest Si Linden Ave.. Mapleview Charleroi. Pa. fComing Glass Works) EVANS. Edward J. Welsh Tinplate & M etal Stam ping Co. I.td.. Box 14 LUnelly, Carmarthenshire. England /A N S LEAD CORP. i Fred Leake. Jr.) Box 1467, Charleston 25. W. Va. EVANS P IP E CO. (T. J. Evans. Ill) Uhrictisville, Ohio EVANS, Ricnard F. tW ) Iroquois China Co. 2J20 Milton Ave.. Syracuse 9, N. Y. EVANS, Ross M. (Sj 404 E. Mechanic St.. Brazil, Ind. (Arkeiex Ceramic Corp.) EVANS. T J.. lit i S.p Evans Pipe Co.. Uhrichsviile, Ohio EVANS, W. Gordon Geo. L. Ashworth St 3ros. Ltd. Broad Street Works Hanley, Stokc-on-Trcnt, England EVANS. William W. (S I) 500 E. Iron Ave.. Dover. Ohio (Robinson Clay Product Co.) EVERHART. J. O. (S F I) Engineering Experiment Station Ohio State University Columbus 10, Ohio EWALD. Merwin R. (M ) Box 19A. R. R. 1, Monclova. Ohio (Surface Combustion Corp.) EWING. Robert F. (W I) Mansfield Sanitary Pottery Perrysville, Ohio EX O LO N CO. (Harvey J. Robiilard) 1000 E. Niagara St.. Tonawanda, X. Y. EYERLY . George B. (S) Malvern Brick & Tile Co.. Box 415 Malvern, Ark. F FABER, William M. 404 W. White. Champaign. III- FABIANIC. W. L. (R F I) Laclede-Christy Co. Div. H. K. Porter Co. 4705 Ridgewood Ave. St. Louis 16. Mo. FABRICA de L A D R ILLO S INDUSTRIALES. y REFRACTARIOS. S. A. (Salvador Odriozola Gomez) Apurtado 390. Monterrey, X. L., Mexico FABRICA de PORCELANA da VISTA ALEGRE. LDA. Gabinete a Lab. Central de Estudos Candai. Vila Nova de Gaia. Portugal FACKLER. Ernst G. Apartado Aereo 6108 Bogota. Colombia (Vtdrio S. A.) FACET. George P. ^SF) 408 Pasco del Mar. Box 378 Palos Verdes Estates. Calif. (Redondo Tile Co.. Ltd.) FADANEI.LI. Louis H. 1132 S. California Ave.. Chicago. 111. FAGG. Leo W. (E) Johoson-Fagg Engineering Co. Box 7157. Tulsa. Okla. FAHRENBRUCK. William O. (R I) R.R. 1. Box 95. Tiffin. Ohio fSterling Grinding Wheel Co.) FA1LMEZGER. Howard (W FI) Victor Insulators Div.. I-T-E Circuit Breaker Co. Maple Ave.. Victor. N. Y. FAIN, Charles C. 789 Glettdalyn Ave.. Spartanburg, S. C. FAIKPACTS CO.. (J. Ryan Smith) Fairfacts St., Trenton 3. N. J. FALCONER. Donald P. (R ) 1013 Maple Ave.. Evanston, 111. (Sales Engineer) FALLON. Frank J. (W I) 29 Felton, West Newton. Mass. (Raytheon Manufacturing Co.) FALTER. Arthur H. (R) 8635 Jacob PI.. Niagara Falls, N. Y. (Carborundum Co.) FARBER. Louis G. (D I) Ceramics Monthly, 4175 N. High St. Columbus 14. Ohio FARGO. Jarvis J. (G) 28 Wilson St.. Coming. X. Y. (Coming Glass Works) Vol. 35. No. 10 (19.56) FARKAS. Howard (M) United States Stoneware Co. 60 . 42nd St.. New York 17, N. Y. FARNELL. James H. (W) Louthan M anufacturing Co. East Liverpool. Ohio FARR. Archie . (El O. Kommci Co.. 3ox 475 Pittsburgh 30, Pa. Fa r r o w . Lewis C. cEl R. R. 1. Clyde, Ohio (W hirlpool Seeger Corp.) FASOLD. G. A. (E ) 7329 3em ard Ave.. Cincinnati 31. Ohio (Philip Carey Mfg. Co.) FA UCHO X-3AU DOT. J. B. Ets. Fauchon-Baudot 21. Ave. de Tourville, Paris 7. France FAULKNER, Karl B. (G) 179 Victory Hwy., R.R. 2 Painted Post. X. Y. FAUST. Ernest H.. Jr. (R i) S3 Kiarman Dr.. Mt. Carmel. Conn. (American Refractories Si Crucible Corp.) FAUST, George T. (B) 9907 Capitol View Ave. Silver Spring. Md. (U. S. Geological Survey) FAY. Wayne X. (RI) 707 K nox Rd., Villanova. Pa. (General Refractories Co.) FEAGIN. R. C. (BI) Aus renal. Inc. 224 E. 39th St.. New York 16. N. Y. FEASTER. Richard V. 560S University Way, Apt. S Seattle 5. Wash. FEDERAL GLASS CO. (Henry H. Blau) 515 E. Iitnis Ave. Columbus 7. Ohio FEDERAL SEABOARD TERRA COTTA CORP. (O. E. Mathiasen) Box 30t. Perth Amboy, N. J. FEDCCK. Michael ? . .Ill 4214 Ashwooa Dr.. N. W. Canton 3. Ohio (Republic Steel Corp-) FEIG ELSO N . Robert S. 720 Teehwood Dr.. Atlanta. Ga. FEIN BLO O M . David T. 345? park Ave.. W an'agh. L. !.. X. Y. FELD. Philip c/o Borensteln 137-09 70th Rd.. Flushing. N. Y. FELDM AN. Gail H. i GJ) J3 Villa Ct.. Hempstead. N. Y. (United States Navy) FELKER. Ernest (W) Box 33. 3408 Summer Rd. Macedonia. Ohio (Ferro Corp.) FELLOW S. R. L. ( E r l) 748 N. Kensington Ave.. La Grange. 111. (Century Vitreous Enameling Co.) FELS. C. G. (R I) .., 11 D eForrest Ave. N orth Plainfieid. N. J. (Fels Refractories. Inc.) FELTON. Ernest 990 N. Park Ave.. Pomona, Calif. FENERTY. M. J. (B) Aluminum Co. of Canada Arvida, Que., Canada FF.XITY. Robert D. (W) Minneapolis-Honeywell Research Center 500 Washington Ave. S.. Hopkins. Minn. FEXSTERM A CHER. John E. (RJ) 302 Cherry. Clearfield, Pa. ( Harbison-W alker Refractories Co.) FENTON . W alter M. (E ) Lithium Corp. of America. Inc. 2560 Rand Tower, Minneapolis 2, Minn. FE N TZK E. A. Daniel (R) 840 Hickman Rd.. Augusta. Ga. (Babcock & Wilcox Co.) Roster 31 FERGUSON. Donald Box 92?, Alfred, N. Y. FERGUSON. Douglas J. (D) Pigeon Forge Pot:ery Pigeon Forge. Tenn. FERGUSON, D. Raber;. Ill (R , 401 Vine Sr.. Eas: Liverpool, Ohio (Crescent Brick Co., inc.) HGUSON. Robert r . (Gi 1765 Caleb Dr.. Zanesville, Ohio r Hazel-Atlas Glass Co.) FERGUSON, Robert L. (S) Yankee Hill Brick Mfg. Co. 728 Stuart Bldg., Lincoln 3, Nebr. FERON. Marcel Administrateur-deieguc Societe Beige de Ceramique "Cerabel" Rue d'Herchies. Baudour, Belgium FERREIRA. Laurence E. (B) Willoughby Arm s, Apt. 2-C Golden, Colo. (Coors Porcelain Co.) FERRES. Daniel Vidplan S. A.. Real No. 4415 Montevideo. Uruguav FERRIS BRICK CO. (R. T. Wilson) Box 188, Ferris. Texas FERRIS. Harry Philip (M) 20 Birch Dr.. Levittown, Pa. (Simonds Abrasive Co.) FERRIS. Jam es E. (G> Hooker Electrochemical Co. Niagara Fall. X. Y. FERRO CORP. (R. A. Weaver) 4150 E. 56th St.. Cleveland 5, Ohio FERRO ENGIN EERING CO. (Benjamin F. Anthony) 1400 Hanna Bldg.. Cleveland 15, Ohio FESLER. Ray T. (W ) A.A.A. Corp.. 3ox 815. Gadsden, Ala. FESSLER. A. H. r'.VFI) 42J 5. Etlgeuood. Lom bard. 111. t A C Spark Plug Div.. General Motors Curp.) FETTER. H. !?.! Cia. Mexieana de Refraetarios A. ? . Green, S. A.. Hamburgo 51 Apartado Postal 71 Bis. Mexico, D. F. FETTERLEY. Guy H. (R) Box 26. Chippawa. Ont.. Canada , (Norton Co.) FETZER. George W. (M l 1205 17:h Ave.. Columbus 11. Ohio (George Fetccr Ceramic Supplies) FEYLING. C aus A. Eie Stentoiiabrik Egersund. Norway FIBERGLAS CANADA. LTD. (John MacRae) Box 309 Gueiph. Ont.. Canada FIE D L E R . W illiam S. (G) Bjorkstcn Research Lahs.. inc. Box 265. M adison 1. Wise. FIELD. Theodore E. (B) Corhart Refractories Co. 1600 W. Lee St.. Louisville 10. Ky. FIELD S. Ernest. Jr. (S3 2J15 Elm St.. Owensboro. Ky. (Owensboro Sewer Pipe Co.) FILES. John A. (E ) Radio Corp, of America Tube Division 3301 Adams. M arion. Ind. F!LIPPI. Hugo (S r) Illinois Brick Co., Room 2240 223 X. LaSalle St.. Chicago 1. III. FILLM ORE. Charles L. (W I) Globe-Union. Inc. 900 E. Keefe Ave., Milwaukee I. Wise. FINDLAY CLAY PRODUCTS CO. (R. S. Craft) Washington. Pa. FINLAY. G. R. (R ) 2231 W aters Ave. Niagara Falls, Ont.. Canada (Norton Co.) iNLAYSEN, John R. School of Ceramics Rutgers University New Brunswick, N. J. Vol. 35, No. 10 (1900) FINNEY, Edwin L. t,S) Claycratt Co.. Shawnee. Ohio FIRESTINE, Arthur C. (G) 3-4 Dewey Ave., Fairpor;, N. Y. (Bausch & Lomb Optical Co.) FISCHER. Eugene A. 108 Newton Ave., N. Worcester 9. Mass. (Norton Co. i FISCHER. Peter R. yj) Goethestr. J4 Wuelfrath/ Rhid.. Germany FISCHER. Robert J. i.W) IS Fairway Ave. West Lon? Branch. X. J. (Signal Corps Engineering Labs.) FISH , E. Thomas <RJI) Great Lakes Carbon Corp. 58th St. & Pine Ave. Niagara Fails. N. Y. FISH E L. Waite 1. (B) R. R. 2, Pleasant City, Ohio FISHER. Eugene A. (W ) Electric Auto-Lite Co. Spark Plug Div.. Fostoria, Ohio FISHER. Henry C. ( R) Norton Co.. 1 New Bond St. Worcester 5. Mass. FISHER. Joseph R. (W ) Bell Telephone Labs.. Rm. IA-341 Murray Hiil. X. J. FISH E R . Richard G. 17 Weils St. Horne!!. X. Y. FISHER. William V. (G) Anchor Hocking Gla>s Corp. Lancaster. Ohio FISH KIN. Henry W. tW) 233 Mantua St.. Park Forest. III. ( Ferro Corp.) FISHLEY, William S. (\V ) Sparta Ceramic Co. East Sparta. Ohio FISH-SCHURMAN CORP. (Murray Yawicz) 70 Portman Rd. New Rochelle, N. Y. FITZGERALD. Alex E. (RI) A-4 Avon Apts., Xarberth. Pa. (General Refractories Co.) FITZGERALD. J. Vincent (W ) Tile Council of A n. Research Center School of Ceramic^. Rutgers University New Brunswick. X. J. FITZPATRICK. William D. <Ri 1009 Vermont A\c.. Ant. 2 Pittsburgh .14. Pa. i Harbtson-Walker Refractories G O FITZSIMMONS. Elmer 5. *RO Chcm. & Abrarives Research Dept. Gncinnati Milling Machine Co. Gncinnati 9. Ohio FITZSIMMONS. Kol*rt F. (W) R. R. I. Oakneid. X. Y. (Lapp Insulator Co.. Inc.) FIX . Frank A. (X) Posey Iron Works. Inc. Lancaster. Pa. FIX . William G. (M> Carborunduni C.. (lobar Div. 333S W. 47th St.. Chicago 32. III. FLEISCHER. Arthur (B) Nickel Cadmium Battery Corp. Box 349, Easthamptun. Mass. FLEMING. A. P. M. Metropolitan Vickers Electrical Co., Ltd. Trafford Park, Manchester 17. England FLEM ING. Charles A. (E l) 3613 General Bates Dr. Nashville 4, Tenit. i Pcmco Corp. i FLEM ING. David M. (SJ) 322 E. Ifwin Ave.. State College. (Glen-Gcry Shale Brick Corp.) FLEM ING . Raymond C.. Jr. CM) 3113 Henderson Cr. \V. Lakeland. Fla. (International Minerals & Chemical Corp.) FLEMING. Thomas T. (R) Frank Samuel & Co . Inc. 2200 Lir.coin-Liberty Bldg. Philadelphia 7, Pa. FLEXOX, John D. R> 30 Gallatin RJ.. Toledo. Ohio (Owens* Illinois) FLICK. Fuit or. B. t.R ; Brown. Cr:tsh;cw. Flick Peckhair. 1706 Firs: National 3ai:k 3icg Pittsburgh 32. Pa. FLINT. E. ?. ,31 A rthur D. L ittle. Inc. 30 Memorial Dr., Cambridge 42. Mass. FL IN T . Francis C. (GFI ) Hazel-Atlas Glass Co. lath 3c Jacobs Sts., Wheeling. W. Va. FLORENCE. Jack M. (G) Kimble Glass Co. Box 1033-1036. Toledo 1, Ohio FLORID A T IL E INDUSTRIES, INC. (James W. Sikes) 60S Prospect St. Box 451. Lakeiand, Fla. FLOY D. W illiam A. Box 4360. State College Sta. Raleigh. N. C. FLU. Eldon Bruce (W ) 1333 Crooks Rd.. Royal Oak, Mich. (Ceramic Div. Champion Spark Plug Co). FLYNN, Paul H. (B) Internationa! Nickel Co., inc. Bayonne W orks. Bayonne. N. J. FO GEL3ERG. Sven Webb's Crystal Glass Co.. Ltd. Dennis Glassworks Stourbridge. England FO LK ERS. Charles L. (RJ) 917 Park Ave.. Ackley. Iowa FONTANA. Eugene H. (G) Box 239. Corning. N. Y. (Coming Glass Works) F0N V E LL 2. Frank ?.. Jr. (W I) Dc~.:i<: Supply Co. of New York SOO \V. College Ave.. York. Pa. FO O TE M INERAL CO. 'L . G. 3!:*si 13 W. Gleiten Ave. Philadeipr.ia 44, ?a. FORAXER. Robert W. (E li Titanium Pigment Corp. 99 Hudson 5t.. New York 13, N. Y. FORBES. Chariea C. ;G) Allen B. Du Mor.t Labs. 730 3loomneid A v e . G iften. N. J. FORBES. Lewis J-3. (G) Pilkinffton 3ros. (Canada) Ltd. 163 Bloor 5:.. E. Toronto 5. Ont., Canada FORD. Fred J. 'S ) 3ox 393. San Francisco. Calif. (Consultant) FORD. George D. (W I) 2136 W ilmcr St., Zanesville. Ohio (Mosaic Tfie Co.) FORD. W aiter D. (G I) . . . Pittsburgh Coming Corp. Research Development Div. Port Allegany, Pa. FO RD. W illiam D. (E ) 1704 VV. 54th St.. La Grange. III. ( Sears Roebuck & Co.) FORDS PORCELAIN WORKS (I. A. Hansen) Perth Amboy, N. J. FORESM AN, Grover C. (G) 212 Cedar St., Coming, N. Y. (Corning Glass Works) FORJAZ. Nicola Porto Ferreira, C. P. Sao Paulo. Brazil Pa.FO RK N ER. Henry R. (X I) 201 Fairview Ave., Blacksburg, Va. (Virginia Polytechnic Institute) FO RLA N D . T orm od <G) Pennsylvania State University Dept, of Ceramic Technology University Park. Pa. Roster 33 FORM AN, Sydney A. (B) Dept, of A griculture, C hem istry Div. Science Service Ottawa. Ont,, Canada FORN'IA. Robert r . (EJ) 2326 -V 60rh St.. Seattle. W ash. (United States Air Force) ' 'ORTH. Robert D. EE) , I3a9 S. \V. Circle Dr. Kankakee, 111. (Florence Stove Co.) FOSDICK, Marten L. (D F ) 100 N. Main St.. Alfred. X. Y. FOSTER-FORBES GLASS CO. (F. R. Motsch) Marion, Ind. FO STER. K. B. (S) Brick & Tile Service. Inc. Bo* 29J5, Greensboro, X. C. FO STER. L uther M. (B) Aluminum Co. of America Alcoa Research Labs. Box 772. New K ensington, Pa. FO STER, WBder D. (B) 5403 Bower Ave., Verona, Pa. (U . S. Bureau of Mines) FO STER. W ilfrid R. (B F ) Department of Mineralogy Ohio State University Columbus 10, Ohio FO STORIA GLASS CO. (Roy G. Yeater) Moundsville, W. Va. FOURATT, Robert F. (R) 113 Willow Dr.. L ittle Silver. N. J. (Carborundum Co.) FOX. Charles S. (R) Aluminum Co. of America 3615 Olive S., St. Louis S. Mo. FOX. Marilyn Box 161. Alfred. X. Y. FRAD. William A. (R) 1800 Oak St.. Rolla. Mo. (Missouri School of Mines) FRAHME. Herman H. (W I) 2353 Banning Rd., Akron 13, Ohio (U S. Stoneware Co.) FRAME. Dudley Jr. (M I) 2366 Club Rd.. Columbus 21, Ohio (Harrop Ceramic Service Co.) FRANCS. J. H.. REFRA C TO R IES CO. (William A. France) Snow Shoe, Pa. FRANCE. William A. (R) J. H. France Refractories Co. Snow Shoe. Pa. FRA X CE5CH IX I. Feiippe J. V. be A. Ceramics Sao Caetar.o Caixa Postal 273. Sao Paulo, Brazil FRAXCIS. Ronald K. (I) Box $47. Alfred. X. Y. FRAXCISCO. Allen C. (R D Brook Lane, R.R. 1 Chesterland, Ohio (Kdlcast Industries. Ine.) FRAXCK. Leon Eta. Franck Sc Stcem an. S. A. 20, Avenue Emmanuel Haren-Xord/Brussels. 3elgium FRAXCL. Josef (B) IS02 Perth St., Toledo 7, Ohio (O w ens-Illinois) FRAXK. Arthur W. (R) 2284 Auer Park Pewaukce Lake. Pewaukce. Wise. (Hevi-D uty Electric Co.) FRA NK. H enry A. (W) Rockport Sanitary Pottery Corp. Rockport, Ind. FRANK. John (D ) Frankoma Pottery, Box 789 1 Sapulpa, Okla. FRANKLIN. Earl W. (R I) 811 Columbia Ave.. St. Joseph. Mich. (Laboratory Equipment Corp.) FRANKLIN. William S. (GI) 918 Grassmere Ave.. Wanamassa. N. J. (Bendix Aviation Corp. Red Bank Div.) FRANKOMA POTTERY (John Frank) Box 789 Sapulpa, Okla. Vol. 35. No. 10 (1056) FRANTZ, Samuel G. (M) S. G. Frantz Co.. Inc. Box 1138. Trenton 6. X. J. FRANTZ. S. G.. CO.. INC. (Samuel G. Fran::) Box 1133 Trenton o, X. J. FRANZ. Leo J. I S i Acme Brick Co., Malvern. Ark. FRASER. Lewis H. D. B l) Dan-Mar Apt. 106. Marion, Ind. (RCA Tube Division) FRASER. Orray T. (CD 574 E. Mithon Sc.. Columbus 6, Ohio (B. F. Drakenfeid 3: Co.. Inc.) FRASER. Walter A. (G) 1320 E. 56th St., Chicago 37, III. (Chicago Midway Laboratories) FRASER, W. B. (S) Fraser Brick Co., 3ox 144 Dallas 1, Texas FRAZIER. C. E. (GF) Frazier-Simplex, Inc. 436 E. Beau St., Washington, Pa. FRAZIER. C. T. (G) 527 E. Beau St., Washington, Pa. (Frazier-Simplex, Inc.) FRAZIER. J. Earl (G FI) Frazier-Simplex. Inc. 436 E. Beau St.. Washington, Pa. FRAZIER-SIMPLEX, INC. (C E. Frazier) 436 E. Beau St. Washington. Pa. FRECHETTE. Howells (Life. SF) $2 Park Ave.. Ottawa. Ont., Canada FRECHETTE. Van Derek (BFI) State University of New York College of Ceramics Alfred, N. Y. FREDERICK. C. L. (R I) 24 Meadowood Lane. R.R. 4 Chagrin Falls. Ohio FREDERICK. Gilbert M. (R) Babcock Sc Wilcox Co. 3 Penn Center Plaza Philadelphia 2. Pa. FREDERICK, Vernon W. (G) Libbey-Owens-Ford Glass Co. Rossford. Ohio FREDERICKS. John D. (S) Pacifie Gay Products Box 2178. Terminal Annex Los Angeles 54. Calif. FREDRIK5SOX. John I. (R) Norton Co.. Box 37 Niagara Falls. Ont.. Canada FREEMAN. Claries A. (RFI) Freeman Fire Brick Co. Box 606. Canon City, Colo. FREEMAN, Edgar H. (W ) Norris-Thermador Corp. 20118 E. Valley. Walnut. Calif. FREEMAN. Joseph (R) General Electric Co. 3198 Chestnut St.. Philadelphia 4, Pa. FRENCH. Myrtle M.. (D F) 128 N. Main St.. Alfred. N. Y. FRENCH. Preston W. (GI) 1517 Union Ave.. Brackenridge, Pa. (Pittsburgh Plate Glass Co.) FREY, E. F. (M) DeVilbiss Co., Toledo 1. Ohio FREYDELL. Octavio Loecria Colombiana Apartado Aereo 10-46 Medellin. Colombia FRIEDBERG. Arthur L. (EF) University of Illinois 217 Ceramics Bldg., Urbana, III. FRIEDMAN. Louis K. (W ) Homer Laughlin China Co. 212 Fifth Ave., New York, N. Y. FRIGIDAIRE DIV,, GENERAL MOTORS CORP. (W. H. Pfeiffer) 300 Taylor St.. Dayton 1, Ohio FRISK. Norman E. (R) 2046 Evansdale Ave., Toledo 7, Ohio (Owens- Illinois) FRITZ. Earl C. (W ) 16 S. Main St.. Franklittville, X. Y. (Precision Ceramics. Inc.) FRITZ. E. K. (W FI) 710 Walnut St.. Latrobe. Pa. (Stupakoff Div., Carborundum Co.) FROBERG. Laird (R) Owens-Corning Fiberglas Corp. Case Ave.. Newark, Ohio FROME. Howeil E. (Gi United Fuei Gas Co.. Box 1273 Charleston 25. W. Va. FRONCZAK, E. T. (S) Richland Shale 3rick Co., Box 323 Mansfield; Ohio FRO ST. Leon J. (E ) Box 138, Lewiston, X. Y. (Titanium Alloy Mtg. Div. National Lead Co.) FRY, Herbert G. National Enamels, Ltd., 53 Norman Rd. Greenwich. London, S. E. 10, England FRY E. John C. (B) State Geological Survey 121 Natural Resources Bldg. Urbana. III. FRY E, John F. 402 Calhoun St.. Salisbury, X. C. FRYSINGER, James E. (M) Pennsylvania Glass Sand Corp. Two Gateway Center, Pittsburgh, Pa. FUENZALIDA, Javier H. (W) Foreign Div., American Radiator & Standard Sanitary Corp. 40 W. 40th St.. New York 18, N. Y. FU JI!. Takashi Yale University, Dept, of Chemistry New Haven, Conn. FU LK ER. Richard H. (E l) 1408 Nicklin Ave., Piqua, Ohio (Pemco Corp.) FULLER. A. A. (X) 322 S. Twyckcnham Dr. South Bcnc, Ind. (Soilit Construction Co., Inc.) FU LLER. Donald H. (E l) 335 S. Cook Ave.. Trenton. N. J. (Trenton Fabricated Metal Co.) FU L L E R . L. R. (E l) 959 E. South St.. Frankiort. Ind. ( Ingram -Richarcson. inc.) FULLER. Richard 3. iW I) Universal Clay Products Co. 1523 First St.. Sandusky, Ohio FU LLER. Richard G. (W ) D. E. McNicoI Pottery Clarksburg. W. Va. FULLER. Wilfred (E) General Steel Wares Ltd. Adelaide & Nelson Sts. London. Ont.. Canada FU LM ER. Raymond C. (W I) Stackpole Carbon Co.. St. Marys. Pa. FULRATH, Richard M. (RI) University of California 164 Hearst Mining Bldg. Berkeley 4. Calif. FUNK. H arry C. (G) Eagle-Picher Co.. Insulation Div. Box 290, Joplin. Mo. FUNKEY. John H. (G) Carr-Lowrey Glass Co. Klom an Sc W enburn Sts. Baltim ore 3. Md. FU N K H O U SER CO. (J. 3. Sauls) 138 \V. Washington St. Hagerstown. Md. FUNNELL. John E. (M I) Southwest Research Institute Box 2296, San Antonio 6, Texas FUSSELL. Lynn E. (E ) 3501 Tyrone Dr.. Louisville 18, Ky. (General Electric Co.) FUWA, Tasuku M assachusetts Institute of Technology Rm. 8-314, Cam bridge 39, Mass. Roster 35 G GARLAND. C. F. (Si Mason City Brick i Tiic Co. CAFyNEY. LeHoy J. Mason City. Iowa 1102 W. liltr.oi, St.. Urbana. III. GARLICK. Oakley H. (M) GAGIN, L. V. >G i Paul O. Abbe. Inc. 2616 Latonia Blvti.. Toledo 6, Ohio Little Palls. N. I. IL-0*F Glasi Fibers Co.) GARLICK, Philip L. ( I) GAiLEY. Matthew D. I (rladys St.. Cyriidcnc J601 W Montiake P!.. Seattle 2, Wash. Johanna burg, South Africa GAINER. Taylor M. 1W 1 ( Prinirox: Brick Works) 215 Sieciiley Dr.. Louisville 14. Ky. GARONZIK. S. H. (S) (American Hadiator Standard 4211 8 rookview Dr.. Dallas. Texas Sanitary. Corp.) (Crown Brick Mr?. Co.) GAINES. Robert F. <S l GAR RON I. Ricardo E. 10801 Sprague. Spokane 02, Wash, Rua Padre Joao Manuel 975 t Washington 3rick i Lime Co.) Sao Paulo. Brazil GAISER. R. A rthur lG ) (Ceraniica Sanitaria Porcelite S/A l Ball Brothers Co.. Inc.. M uncie. Ind. GARSTANG, Alee G A L3REA TH . W illiam W., Jr. (R I) King, Taudcvin e Gregson Ltd. 102 Clinton Ave.. Apt. 5-C Grindiegate Works. Scotland St. Brooklyn 5. X. Y. Sheffield .1, York, England i Bahcuck J: W ilcox Co.) GARTNER. Carl W. (W ) GALE. Richard K. ( BI 1081 Allston Ril. General Coior & Chemicai Co., Inc. Box 7. Minerva. Ohio Cleveiand Heights 21. Ohio i Ferro Corp.i GARTNER. George C. (W ) General Color & Chemical Co., Inc. GALLAGHER. Thom as F. (G) Laclede-Christv Co. Box 7. Minerva. Ohio CARVE. T. Walter (SFi) Div. H. K. Porter Co. 69 W. Weisheimer Rd. 2512 First N ational Bank Bldg. Columbus 14. Ohio Pittsburgh 22. Pa. (Consulting Engineer) GALLUP. John i.GIl Radio Corp. of America. Tube Div. GARVEY. Lawrence P. (RD RCA Victor. 415 S. Fifth St. 415 S. Fifth St.. H arrison, X. J. Harrison. N. J. GALL'S HA. Richard L. (W ) Continental Ceramic Corp. GASKINS. W. W. (M I) Sierra Taic & Clay Co. Box 41. Bigtervillc. Pa. Box 390. South Pasadena. Calif. GALVIN. G. H.. Jr. (S) Rockford Brick & Tile Co. GATES. Daniel W. (XI) R.R. 4. Box 221. Huntsville. Ala. Rockford. Iowa (Redstone Arsenal) GALVIN. Richard J. fS) Sheffield Brick 4 Tile Co. Sheffield S. Iowa GATES. Louis E.. Jr. Hughes Aircraft Co.. Bldg. 20 Rm. 101SB, Culver City, Calif. GAMBLE. David L. t R) New Jerev Zinc Co. of Pa. GATES. Major E. (R) 773 Vista Grande Ave. Research Dep:., Patmenon. Pa. Los Altos. Caiit. GAMBLE. John D. (\V) GATLIN. E. H. (S) Bell 4 Gossett Co.. 3200 Austin Ave. Texas Clay Products Co. Morton Grove. III. 3ox T. Malakoff. Texas GANDY. Robert J.. j r . 20J2 Eastlake. Apt. .1 GAUDIANO. Victor M. (W) Sanitarics Es Aguila S. A. Seattle 2. Wa-h. GANGLER. James J. !R) 23523 Stanford Ave. Fairview Park 26. Ohio Apartado Postal 26308. Zona 14 Mexico. D. F. GAUNDER. Wilbur F. (G) Pittsburgh Plate Glass Co. I National .Advisory Committee for Works No. 11. Mt. Vemon, Ohio Aeronauticsi GAUTSCH. Murray C. (MI) GANGULI. L'mapati Metal Sc Thermit Corp. Bengal Enamel Works Ltd. 415 E. 151st St., East Chicago. Ind. P. O. Bengal Enamel. Dist. 24 ParganasGAVIN. G. P. (W ) '.Vest Bengal. India Kohler Co., Kohler. Wise. GAN PU LE. Anant K. Parshuram Pottery Works Co., Ltd. GAWTHROP. Alfred (S) 885 Maplewood Rd., Lake Forest. III. Xtorvi. Saurashtra, India (Chicago Brick Co.) GANTS, Sheldon B. fD ) GAY. Hayward A. (R) Ceramic Associates. Inc. Cincinnati Milling Products Div. 26S0 Dvre Ave.. New York 66, N . Y. Cincinnati Milling Machine Co. GARBISCH. Norbert S. (\V) 4701 Marburg Ave., Cincinnati 9. Ohio Garco Products. Inc. GEE. Kenneth H. (B) Box 251. Butler. Pa. 2033 Westfield Terrace, Bethlehem. Pa. GARCIA-LEAL. Ramon (M I) (Bethlehem Steel Co.) Apartado Postal 1115 GEIGER. Charles F. (R FI) Monterrey N. L.. Mexico Carborundum Co.. Box 268 f Manufacturers Representative) Perth Amboy. N. J. GARCO PRODUCTS. INC. GEIGER. Joseph S. (M) fNorbert S. Garbisch) Box 251 46 E. Welling Ave. Butler. Pa. Pennington, N. J. GARDEN. Henry R,, Jr. (S) (Titanium Alloy Mfg. Div.. Box 508. Salem. Va. National Lead Co.) <Old Virginia Brick Co., Inc.) GEISINGER. E. E. CEF) ' GARDNER. Walter E. (S) Ladrillera Monterrey S. A. Pfaudler Co., 1000 West Ave. Rochester 3, N. Y. Apartado 560 GEIST, William J. (X) Monterrey, N. L.. Mexico Young Machinery Co,, Muncy. Pa. GARDON. Robert (G) GELLER, R. F. (WF1) Mellon Institute. 4400 Fifth Ave. 5427 York Lane, Bethesda 14, Md. Pittsburgh 12. Pa. (National Bureau of Standards) GARFIELD REFRACTORIES CO. GELSTHARP. Frederick (GF) (Kenneth A. Rugh) Bolivar, Pa. 1134 Park St., Tarcntum 1, Pa. Vol. 35, No. 10 (1956) GELT MAN. Gerald 276 W'inthrop Rd.. Teaneck. N. J. GEMMELL. /. G. fC) Goldin;Keene Co., Box 456 Keene, N. H. GEM?. Robert W. (R) 500 Michell St.. Ridley Park. Pa. (Botneid Refractories Co.) GEN DEL. Sydney Z. (R) 4050 Eastway Rd. South Euclid 21, Ohio ( Zirconium Carp, of America) GENERAL CERAMICS CORP. (Salvatore Ortepio) Crows Mill Rd.. Kcasbcy, N. J. GENERAL COLOR 4 CH EM ICA L CO., INC. (George C. Gartner) Box 7. Minerva. Ohio GENERAL ELECTRIC CO. (N . F. Shofstall) 1811 LeMovr.e Ave.. Syracuse. N. Y. GENERAL ELECTRIC CO. ( L. E. Thiessi Insulator Dept. Baltimore 30. Md. GENERAL ELECTRIC CO. (W . S. Kahlson) Lamp Dept., Pitney Glass Works Neia Park 12. Cleveland, Ohio GENERAL GLASS EQUIPM ENT CO. (Victor A. Plumbo) 5 S. Virginia Ave. Atlantic Citv. N. J. GENERAL REFRACTORIES CO. (Russell P. Hcuer) 1520 Locust St. Philadelphia 2, ?a. GENTRY, Raymond (G) Alexander H. Kerr & Co., Inc. Box 2008. Santa Ana. Calif. GEXTSCH. A. Page (M) United Clay Mines Corp. 101 Oakland St., Trenton. N. J. G E X TSC H , 3ernhard F. (M) United G ay Mines Corp. 10! Oakland St.. Trenton. N. J. GEORGE. \V. R. iW ) Canons burg Pottery Co. Canonsourg. Pa. GEORGE. \V. S. <W) W. S. George Ponery Co. Park Ave.. East Palestine. Ohio GEORGE. W. S.. PO TTERY CO. <W. S. George/ Park Ave. East Paiestine. Ohio GEORG IA-CARO LINA BRICK & T ILE CO. (J. C. Hagier. Jr.) 10 Campbell Bldg., Augusta. Ga. GEORGIA KAOLIN CO. (Robert H. Bollinger) 433 N. 3 road St., Elizabeth 3, N. J. GEPHART. Charles D. (S) Ccdarhurst. Holly Springs. Miss. (Holly Springs Brick & Tile Co., Inc.* GERBER. Oscar L. (W ) Gerber Plumbing Fixture Corp. 232 N. Clark St.. Chicago 1. 111. GERCAR. Francisco J. S. A. Cristalcriaa Del Uruguay Comercio 1491, Montevideo, Uruguay GERSCH. HerbCTt (S) 3557 Ontario St., Columbus I t , Oht< (G aycraft Co.) GERSTENSCHLAGER. V., Jr. (R) Babcock 4 Wilcox Co.. Box 923 Augusta, Ga. GERSTER, C. W. (W I) Louthan Manufacturing Co. 2000 Harvey Ave., East Liverpool, Ohi> GETTO. Allan S8S E. 16th S t , Brooklyn 26, N. Y. GHERING, Leonard G. (GF) Preston Laboratories, Box 149 Batlrr, Pa. GIACOMELLI, Domenico Soc. It. Refrattari Marghera Azionaria Via Industrie 52 Cas. Post. 308 Marghera, Venice, Italy Roster 3 GIANG. Yu Kim Cboan Huat Co. Inc. Ill Jose Rizai St.. Mar.daluyong Rizai Province. Philippines G I33. Mary J. American Ceramic Society 4055 N. High St.. Columbus l*. Ohio GI3BS. Melvin 3. (E) inland Steei Co.. Quality Control Dept. East Chicago, ind. GI3SON', Frank 9. ( E) 9 Terrace Circle Great Neck. L. N. Y. i Seaporcci Metals. Inc.) GIBSON. R. L. (\V I) l i l a Wilmington Ave. New Castle, pa. (Shenango China, Inc.) GIBSON. Robert C. (E ) Parker Rust Proof Co. 2177 E. Milwaukee Ave. Detroit II, Mich. GIE5EKE. Frans Kockums Exaljerverk Ronr.eby, Sweden C1E3ER. Ralph H.. Jr. (E) Rheem Manufacturing Co. 7600 S. Kedzie. Chicago 29. III. GIESS. Edward A. (I) Box 905. Alfred. N. Y. GIL. David (D) 122 McCall St.. Bennington, Vt. (Cooperative Design) GILBERT. George W. (G) Owens-Coming Fiberglas Corp. 598 Madison Ave.. New- York 22, N. Y. GILES. James H,, Jr. (E l) 821 Brett St.. Apt. 2 Pittsburgh 5, Pa. (O. Homme! Co.l GILES. Raymond (W ) 142 McKeever St.. Crooksville, Ohio (Crooksviile China Co.) GILES. Thomas 51. 1674 3erkshire Rd.. Columbus. Ohio GILFILLAN. B. T. (R) Climax Fire 3riek Co.. Climax. Pa. GILFILLAN. J. M. (W ) New Jersey Porcelain Co. Box 90S, Trenton 5, N. J. GILL. John K. ;R) GUI C ay Pot Co., Muncie, Ind. GILL. Joseph '.V, ,M I) 685 Van Buren St., Des Plaines, 111 ( U. S. Gypsum Co.) GILL. La Verne N. ('-VI) American Radiator & Standard Sanitary Corp.. Box 268 Torrance, Caiif. GILL. W. T.. Jr. (S) Texas Brick Co., Box 510 3rownwood. Texas G IL L ESPIE . H. M. <M) 225 Broadway. New York 7. N. Y. GILLIARD. Joseph W. (D ) 108 W. County St.. Phoebus, Va. (Hampton Institute) G ILLIES. Daniel M. (B> Linde Air Products Co.. Research Lab. 3ox 44. Tonawanda, N. Y. GILLINDER BROTHERS. IN C (J. Fletcher Gillinder) Port Jervis. N. Y. GILLINDER. J. Fletcher (G) Gillinder Brothers. Inc. Port Jervis. N. Y. G ILTN ER . Benedict C. (S) Foley & Grove. Benscnviiie. III. (Lindbcrg Engineering Co.) GIMSON. Joseph FWorcester Royal Porcelain Co., Ltd. Royal Porcelain Works Worcester. England GINGOLD. Jacob 6 rue tie Fontenay. Plessis-Robinson Paris, Seine. France GtRALDEZ. Emilio Ceramica Xacional C. A. Box A -10. Riobamba. Ecuador VOL. 35. No. 10 (1950) GIRARD. R. T. ( i General Electric Co. General Engr. Lab.. Bldg. 57. Rm. 299-53 One River Rd.. Schenectady 5. N. Y. GITTER. Alice Josephine (MFD 59 W. 70th, New York 25. N. Y. (Whittaker. Ciark i Daniels. Inc.) GITZEN. Walter H. (Rl 1 Wesley Dr.. 3eilevi!le. 111. (Aluminum Co. oi America) GIVEN, Conrad W. (E ' Great Lakes Steel Corp. Ecorse. Detrcit 29. Mich. GLABALL Ernes: R. <G) 140 Wocrd Ave.. Waltham 54. Mass. (Raytheon Mfg. Co.) GLADDING. Albert C. (S) Gladding Bros. Mfg. Co. Third & Keyes St., San Jose. Calif. GLADDING. McBEAN & CO. (S. V. Saginor) 2901 Los Feliz Blvd. Los Angeles 59. Calif. GLADNEY. Kurt (G) Fiberglas Canada Ltd., Box H Samia, Ont., Canada GLASER. Frank W. (R) Alloy Prcision 'Castings Co. E. 45th St. Jt Hamilton Ave. Cleveland 14. Ohio GLASER. John H. (Ci Uniscience Inc. 112 Crooked 3illet Rd.. Hatboro, Pa. GLASFORD. James W. 1350 Boilvin Ave.. Rockford, III. CLASSER. Fred P. Pennsylvania State University 226 Mineral Sciences Bldg. University Park. Pa. GLAZE. Francis W. (GFD 4100 Gallatin St.. Hyattsville. Md. (National Bureau of Standards) GLEN-GERY SHALE BRICK CORP. (Gordon E. Lewis) Box 86. Shillington. Pa. GLENSHAW CLASS CC.. INC. (George \V. Meyer) Glcnshaw, Pa. G L 03E -U N I0N INC. (J. Fletcher Harper) 900 E. Keefe Ave.. Milwaukee 1. Wise. GLOSS. Gunter H. (R) International Minerais & Chemical Corp. 5401 Harrison St., Skokie. 111. GLOSSBRENNER. D. 1. (M) ?_R. 12, Box 261. Indianapolis, Ind. (Kaolin. Inc.) GLOSTEX CHEMICALS. INC. (C. G. Wurtsbaugbl 5056 Bandini Blvd. Los Angeles 25. Caiif. GLOWACK1. George V. (W ) 65 Linden Ave.. Boomneld, N. J. (Radio Corp. of America) GLYNN, T. W. (G) 1505 Fairidge Dr.. Kingsport. Tenn. (Bine Ridge Glass Corp.) GODBOLD, Jack W. (W) 1505 Bluebird Ln.. Garland, Texas (Ferro Corp.) GODDARD. W. T. (W ) Box 428, Hamilton, Ont., Canada (Canadian Porcelain Co.. Ltd.) GODEJAHN. Gordon C . Jr. (G) 2847 Alisdale Dr.. Apt. 102 Toledo 6. Ohio (Owens- Illinois) GODFREY) T. Gordon. Jr. Box 3434, Clemson College Sta. Clemson, S. C. GODOY, E. A- & CO,, IN C (Emilio A. Godoy) 25 Broadway New York 4, N. Y. GODOY. Emilio A. (R) E. A. Godoy & Co., Inc.. 25 Broadway New York 4. N. Y. GOETCHIUS. Don R. (E) Ferro Corp. 4150 Is. 56th St.. Cleveland. Ohio GOIN. Fred L. (S i) Gladding, Mc3ean 5c Co., Lincoln, Calif. G O LD IN G -K E E N E CO. (J. G. Gemmell) Box 456 Keene. N. H. GOLDMAN. 3asil E. (S) Rhodes Chemical Co. 15*5 S. State S:.. Chicago 5. Ill GOLDSMITH. Julian 3. (Bl University of Chicago Dept.oi Geology, Chicago 57, III. GOLDSTEIN. Marcy 3. (E J) 6 Glenfair Rd., Fair Lawn. N. J. (United States Army Chemical Corps.) GOLDSTEIN. Martin <G) Mellon Institute. Pittsburgh 13. Pa. GOLIBER. Edward W. (B) 2602 N. Connecticut. Royal Oak. Mich. (General Electric Co.) GOMEZ. Leon D. Cristalcria Peidar Ltda Medellin, Colombia GOMEZ, Salvador Odriozola (R) Fahrica de Ladriilos Industriales y Refractartos, S. A.. Apartado 390 Monterrey, N. L.. Mexico GONDER. Lawton (W ) Goncer Ceramic Arts. Inc. Box 44$. Zanesville. Ohio GONZALES. Narciso (M) Eagle Pencil Co. 710 E. 14th St., New York 9. N. Y. GOODFELLOW , Ted M. (W ) Tektronix. Inc., 94j0 S. W. Barnes Rd. Portland. Ore. GOODHUE. R. K. (M) Stauffer Chemical Co. 325 S. Main St.. Akron 8. Ohio GOODMAN. Gilbert (B) General Electric Research Lab. Box 1088. Schenectady. N. Y. GOODMAN. James S. (E) American Radiator & Standard Sanitary Corp., 334 E. Broadway Louisville *. Kv. GOODRICH. Hobert R. (W I) 1522 Santa Barbara Ave. Glendale 3. Caiif. (Gladding, McBean & Co.) GOODRIDGE. Paul Box 347. Alfred. N. Y. GOODW IN, William Jar-ard (3 ) 5464 Waiiace Dr.. Grand Island. N. Y. (Electro-Metallurgical Co.) GORDON, Irwin (W) RCA Laboratories Div. Princeton. N. J. GORDON. John R. (R) Zirconium Corp. of America Solon. Ohio GORMLY. Maurice W. (W) 7330 Miami Hills Dr., Madeira, Ohio (Cincinnati Milling Products Div., Cincinnati Milling Machine Co.) GORNALL. Henry A. (M l) 4357 Ardmore Rd.. .S. _Euclid- Cleveland 21. Ohio (Allied Engr. Div.. Ferro Corp.) GORSUCH. Charles A. (M) Ayers Mineral Co., 806 Market St. Zanesville, Ohio GORT. Waiter A. (W) Twin Bay Village. Bolson Landing, N. Y (General Ceramics Corp.) GOSS, Bruce R. 11 Hamilton St.. Weedsport, N. Y. GOSZTONYI, George Lozadur, Av. Mayo 981 Buenos Aires, Argentina GOTTO, Mrs. B. D. "W heatlands," Headley Nr. Newbury. Berks. England (A. L. Curtis Co.) GOUDGE, Monson F. (R) Mines Branch, 40 Lydia St. Ottawa, Ont., Canada (Dept. Mines & Technical Surveys) R oster 3S OULD, Anita H. (GJ) 320 E. Eighth Ave- Tarentum, Ta. (Pittsburgh Plate Glass Co.) JOL'LD, Robert E. (W F I) Butfalo Pottery, lise. 25 Hayes PI., 3uifaio 0. N. V. lO '.VES. rvi-.g \V. (R l 16 W. Boulevard. Mexico. Mo. jiexico Refractories Co.) . -'F , James B. (S) Graff.Kittannir.g Clay prods. Co. Worthington. Pa. RAFF-XITTANN ING CLAY PRO D U CTS CO. (James B. Graff) Worthington. Pa. RAFF, William A. (G) Glass Technology Lab. General Electric Co. 1155 E. lS2nd St., Cleveland 10, Ohio JRAHAM, Henry C. IS N. Erie St., Mayville. X. Y. RAHAM, John Warren (R) 843 Cascade Rd.. Cincinnati 40. Ohio (General Electric Co.) RANNEN, Edward A. (W ) 77 Sheehan Ave., Cincinnati 15. Ohio (Cambridge Tile Mfg. Co.) RANT, Frederic J. (W ) 527 W. Seventh St.. Rm. 303 Los Angeles 14, Cali!. (Grant Ceramic Co.) RANT. John F. (I) Box 262. Coming, N. Y. RAUER, Oscar H. (G) Fischer it Porter Co., Hatboro, Pa. RAVES. F. E. (S) Lindberg Industrial Corp. 1559 Post Rd., Fairfield, Conn. ;RAY, Thomas J. (B) Box 814, Alfred. N. Y. (State University of New York, College of Ceramics) )RAY. W. Ashley. Jr. (X ) Pioneer Silica Products Co. 3615 Clive S t . St. Lcuis 3. Mo. -jV *Y. William T. (G) feds & Northrup Co. *01 Ster.ton Ave.. Philadelphia 44, Pa. IRa YBEAL. Byron F. (Ml American Vermiculite Co., Inc. Roan Mountain, Tenn. 3REAT l a k e s f o u n d r y s a n d c o . f C. L. Cruik'hank) 720 United Artists Bldg. Detroit 26. Mich. R E E N . A. ? - F IR E ERICK CO. (William S. Lowe) 1013 E. Breckenridge St., Mexico, Mo. REEN, A. T. (F) British Ceramic Research Assn. Queen's Rd., Penkhull Stoke-on-Trent, England IR E EN , Daniel K. Box 787, Alfred. N. Y, REEN, D. T. (S) Milton Brick Co., Ltd.. Box 554 Milton, Ont.. Canada R E E N , John R. (MI) Minneapolis-Honeywell Reg. Co. Wayne it Windrim Aves. Philadelphia 44, Pa. REEN , Robert L. (W ) Lenox, Inc., Meade St. Trenton, N, J. REEN, R, S. (BI) 18 S. Jefferson Rd., Mexico, Mo. (A. P. Green Fire Brick Co.) R EEN E, Charles F. (S) 6046 N. Trenholm Rd., Columbia, S. C. (Columbia Brick & Tile Co.) R EEN E, Charles H. (G) Box 804, Alfred, N. Y. (State University of New York, College of Ceramics) ' 'NE, Eleanor L. '24 17th N. E., Seattle, Wash. R sE N E . J. F. (GF) 1043 New Fear, Vineland. N. J. (Kimble Glass Co.) Vol. 35, No. 10 (1956) GREENFIELD, Jerome (M l Seaboard Chemical Corp. 198 Broadway, New York 38, N. Y. GREENHOUSE. Harold M. <B) Aladdin Radio Industries Nashville 2, Tenn. GREENLEE, Charles A. (R) Basic, Inc 845 Hanna Bldg.. Cleveland 15, Ohio GREGER. Herbert H. (W ) Trans-Tech., Inc. Box 546. Rockville. Md. GREGORIUS. J. S. (GFI) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22, ?a. GRENIER. Lee (M) Magnet Cove Barium Corp., Box 852 Greybull, Wyo. GRESHAM, Lucius C., Jr. (S) Acme Brick Co., Box 508, Waskom. Texas GRETHER. Charles M. (W ) D. M. Steward Manufacturing Co. E. 56th St., Chattanooga, Tenn. GREW ER. Douglas (MJ) 45-54 47th St., Woodslde 77,_ N. Y. (United States Army) G RIFFIN . Thomas W. "La Feuiiiie" Trle.x Vaud. Switzerland (H artford Empire Co.) G R IF FIN . William R. (W ) Weweantic Shores, Warenam, Mass. (Aerovox Corp.) G R IFFITH . J. Scott (R) S524 VV. Adams St.. Chicago 44, HI. (Armour Research Foundation) GRIFFITH . R. E. (R) R.R. 1, Malvern, Pa. (E . J. Lavino it Co.) GRIFFITH S. Norman Nonporite Pry. Ltd. 292-296 Burwood Rd. Hawthorn E 2. Victoria, Australia GRIGG. Arthur (R) Box 2329. Denver I. Colo. (Denver Brick it Pipe Co.) GRIGG. Paul E. (E l) 338 N. Dover Ave.. La Grange Park. 111. ( Association of American Railroads) GRIM. Ralph E. (X) Dept, of Geology. Univ. of Illinois Urbans. 111. GRIMM, Clayford T. (S) Clay Products Assnc. cf the Southwest 109 Perry.Brooks Bldg., Austin 1, Texas GROBB. F. S. (R l G. F. Sterne St Sons. Ltd. 126 Bruce St., Brantford. Ont., Canada GROOME. Garland L. (R) 931 Jeffrey S t . Baltimore 2S. Md. (Harbison-Walkcr Refractories Go.) GROSS. Harold I. (W ) Santa Anita Potteries 3117 San Fernando Rd. Loi Angeles 65, Calif. GROTHAUS, Joseph V. (R) 2552 E. 76th St., Chicago 49. III. (United States Steei Corp.) GROVE. Robert L. (W I) 26 Rockland St. South Dartmouth. Mass. (Cornel l-Dubilier Elec. Corp.) GRNER. Max N. (R) Harbison-Walker Refractories Co. 1325 Ambassador Bldg., St. Louis 1, Mo. GRUVER, Robert M. (G) 1160 Oneida S t , State College, Pa, (Linden Labs,, Inc.) GSCHW IND. Jean F. (M) Ross Midwest Fulton Corp. 918 Woodley Rd- Dayton 3. Ohio GUERCI. Carl F. (W) 1444 Westgate Dr.. Bethlehem. Pa. (Frcncbtown Porcelain Co.) GUGELER. Albert L. (E J) 3897 W. 33rd S t- Cleveland 9, Ohio (Ferro Corp.) CUIMARAES, Hello Per.tagna Caixa Postal 1355 Beio Horizonte. 3razil ( Magnesits S. A. 1 GULICX. Chester (M l Kenrjcky-Tenr.essce Clay Co.. Ir.c. Mayfield. Xv. GULLINGS. LeRoy V. fC) 125 Parkway Dr., Wabash. Ind. (American Rock Wool Corp.) GU.MMESON. ?. Eg. Hoganas-Bilieshoims Akticbolag Hoganas, Sweden GUNTHER. F. W. iS) 849 Baker Ave., N, W. New Philadelphia, Ohin (Universal Sewer Pipe Corp.) GUNZENHAUSER, Adolph (M) Industrial Consultant. 69-70 113th St. Forest Hills 75. L. I.. N. Y. GUPTA. Rajeshwar K. (GJ) 429 S, Division, Ann Arbor. Mich. (University of Michigan) GUPTA. Subodh C. (GJ) Box 101, Port Jervis, N. Y. (Giilindcr Bros., Inc.) GURR. Wilhelm Porzellan-Manufaktur W. Haldenwangcr Berlin-Spandau Heerstr. 221, Westsektor. Germany GUSTAFSON. Carl H.. Jr. (R) 47 Montana Dr., Holden, Mass. (Norton Ca.) GUTHRIE, George 3. (W) 642 Louisiana Ave., Chester. W. Va. (H all China Co.) GUZMAN. Hector (G) 2944 Ker.dale Ave., Apt. 105 Toledo, Ohio (Owens-Illinois) GYWE. Mg La Box 216. Alfred. N. Y. H HACK. W alter L. ;W ) Western Goid it Platinum Co. 525 Harbor Blvd.. 3elmont. Calif. HACXSTT. James W. (G) 3614 Kenwood Blvd., Toledo 6, Ohio (Owens-Illinois) HACKLER. W. C. (W I) North Carolina State College Dept, of Mineral Industries Raleieh. N- C. HADLEY. Robert L. (E) General Electric Co. Major Appiiar.ee Div... AP 5. Rm. 249 Appliance Pk.. Louisville 1. Ky. HAECKER. Arthur J - Jr. (R) 1793 Sharon D r- Concord. Calif. (Gladding, McBean & Co.) HAEGER PO TTERIES. INC. (Joseph F. Estes) 7 Maiden Lane Dundee. 111. HAERTLING. Gene H. (W JI) 325 Virginia Ave.. Ste. Genevieve. Mo. (Ipsenlab of Rockford. Inc.) HA FNER. Harold C. (G) Bausch & Lomb Optical Co. Chemical Research Lab. Rochester 2, N. Y. HAFNER. Robert H.. Jr. (E) 175 N. Linden R d- Mansfield, Ohio (Hotnphryea Mfg. Co.) HAGAN, M. A. (R I) Midwest Research Inst. 425 Volker Blvd., Kansas C tty 'lO, Mo HAGAR, Donald (31F I) Box 328, Zanesville, Ohio (Donald Hagar Ceramic Materials) HAG BERG. Carl E. (M) Kentucky-Tennessee Clay Co., Inc. Box 894, Mt. Union Sta. Alliance, Ohio HAGEDORN. A. J. E. (R) General Abrasive Co.. Inc. Drawer D. Bridge Sta. Niagara Falls. N. Y. Roster 43 HAGEDORN. t . C. (Ci Owens-Illinois. Technical Center 1700 N. Westwood. Toledo 1. Ohio HAGEN AUER. Carl J. (G) R.S. 1, S a r.tr. Pa. ('Pittsburgh Plate Giass Co.) HACCLUND. Erik (M) Kanthal Corp , Amelia ?1. Stamford. Corn. riAGLER. ;. C.. Jr. (S i Georgia-Carciina Brick <U Tile Co. 10 Campbell 3'.cg., Augusta, Ga. HAGNER. Free F. CGi Phoenix Glass Co.. Monaea. Pa. HAGY, Henry E. (G) Corning Glass Works Laboratory Corning. N. Y. HAHN, William P. (G) 30 Norwood Ave. North Plainf.eld. N. J. (Johns-Manville Corp.) HAHNER. Clarence H. (GF) National 3ureau of Standards Washington 25. D. C. HALDEN. Frank A. (B) . 1133 Laurel S:.. Menlo Park. Calif. (Stanford Research Institute) HALDY. Norman L. (W ) American Encaustic Tiling Co. 1000 Cannon Ave., Lansdale, Pa. HALE. Arthur R. (M ) Aluminum Co. of America 1830 Elnuvood Ave., 3uffalo 7, N. Y. HALEM. Robert G. (W J) 1571 U nderdid Ave.. Bronx 53, N. Y. (Babcock & Wilcox Co.) HALL CHINA CO. (John T. Hall) East Liverpool. Ohio HALL. Donald H. 113 Barron 5:.. Rochester 11. N. Y. HALL. Douglas E. Box 736. Alfred. N. Y. HALL. E. 3. M /S Bird i Co..L td.. Research Dept. Chartered 3ank Bldgs. 'Calcutta. India nA LL. Everson (W ) Park Way Ext.. East Liverpool, Ohio IHall China Co.) HALL. r . P. (W F j Onondaga Pottery Co.. Electronic Div. Syracuse i. N. Y. HALL, James L. 'W ) 342 Oregon Ave.. Palo Alto, Calif. (Thermo-Materials Inc.) HALL. John T. (W ) Hall China Co.. East Liverpool. Ohio HALL, Morris P. (S) Alton Brick Co.. Box 25 Maryland Heights. Mo. HALL3ERG. Richard C. (W ) 236 Watson Ave.. Fostoria. Ohio (Electric Auto-Lite Co., Spark Plug Div.) HALLER. Percy 319 Carterknowle 3d.. Sheffield II. England (John G. Stein 3c Co., Ltd.) HALLER. Wolfgang K. (B) Inst, of Silicate Research University of Toledo, Toledo 6, Ohio HALLETT. Crawford W. (RI) Ceramic Supply Co., Box 106 Crooksville, Ohio HALLOIN. William G. (G) 1218 Broadview Blvd. Brackenridge, Pa. (Pittsburgh Plate Glass Co.) HALLSE. Robert L. 514 S. Chase Ave.. Lombard. III. HALM, Louise '(Union Franaise des Produits 'Rfractaires. 15. Rue de Milan Paris 9e. France H A I.V O N lk, Frank V. (G) Brockway Glass Co., Brockway, Pa. Vol. 35. No. 10 (1956) HAMAKER. M. L. (R! Columbia Fire Brick Co. 613 First National Bank Bldg Canton 2. Ohio HAMER. Donald (S) 426 Elmwood, Evanston, 111. (Lindbcrg Engineering Co.) HAMILTON. Edgar H. (G li National Bureau of Standards Washington 25, D. C. HAMILTON. Eldon K. Colfax. III. HAMILTON. Howard G. 251 Tenth St. N. W,, Apt, 104 Atlanta, Ga. HAMILTON. J. C. (G) 3422 Chestnut Hill Rd.. Toledo 6, Ohio (Owens-Illinois I HAMILTON, Noble E. (B) 53 Benjamin Rd.. Belmont 78, Mass. (Clevite Transistor Products I HAMILTON. Robert (M) United States Gypsum Co. 300 W. Adams St., Chicago 6. 111. HAMILTON. W. M. (E ) Crane Co.. Chattanooga Div, 33rd and Alton Park Blvd. Chattanooga I. Tcnn. HAMME. Donald G. (3 ) National Gypsum Co.. Research Center 1650 Military Rd.. Buffalo 17, N. Y. HAMMER. Averill J. (S) Dept, of Chemistry Bowling Green State University Bowling Green. Ohio HAMMER. Gunter 246, Connell's Pt. Rd. South Hurstville. N. S. W., Australia (Messrs. R. Fowler Ltd.) HAMMOND LEAD PRODUCTS. INC. (William P. Wilke. I ll) 5231 Hohman Ave.. Box 912 Hammond. 1ml. HAMPEL. Richard J. (W J) 3762 Osceola St.. St. Louis. Mo. (Trenton Potteries Co.) HANCOCK BRICK & T IL S CO. (James L. Child. Jr.) Box 450 Findlay. Ohio HAND. Thomas (R) Corhart Refractories Co. 1600 W. Lee St.. Louisville 10, Kv. HNDEN. Jack iGJ) 20 Elmora Ave.. Elizabeth. N. J. (Lmited States A rm ' ) HANDWERK. Joseph H. (B) 915 N. Prairie Ave.. Joliet. III. (Argonne National Laboratory} HANKS. Charles F.. Jr. (M) Kentucky-Tennessee Clay Co.. Inc. Box 894, Mt. Union Sta. Alliance. Ohio HA NLEY CO. (John M. Dickey. Jr.) Summerville. Pa. HANN. Douglas G. Caynton. Shifnal. Shropshire. England (British Heat Resisting Glass Co.) HANNA. H. H. (Gl) Pittsburgh Plate Glass Co. 100 Mississippi Ave. Crystal Citv, Mo. HANNA. Ralph E. (W I) Square D Co., Molded Insulation Div. Peru. Ind. HANNA. Richard (W J) Hartford, N. Y. (General Electric Co.) HANNEKEN. Henry P. (G) Mississippi Glass Co., 88 Angelica St. St. Locus 7, Mo. HANNON. Richard C. (M I) 1208 Franklin Rd., Salem, Ohio (R. T . Vanderbilt Co., Inc.) HANOVIA CHEMICAL & MFG. CO. (R. T. Hopper) One W . Central Ave. East Newark, N. J. HANSARD. W. Carey (W I) 234S Cheshire Bridge Rd.. N. E. Atlanta. Ga. (Georgia Institute of Technology) HANSELL. U. G. (W l Honeywell Research Center 500 Washington Ave.. S. Hopkins. Minn. HANSEN. L A. (W> Fords porcelain Works Perth Amboy, N. J. HANSEN. J E. ( E r l) Ferro Corp., 5309 S. District Blvd. Los Angeles 22. Calif. HANSEN. John H. (G) Libbev-Owens-rord Glass Co. 1701 E. 3roadwav, Toledo. Ohio HANSEN. Kenneth H. (M) 507 Edgevvood Ave.. Columbia, Mo. (Consolidated Feldspar Dept., International Minerals St Chemical Corp.) HANSEN. Valdetnar Kastntp Glasvaerk Ltd. Norrevoldg. 12, Copenhagen K, Denmark HA N SEN . Waidemar C. (R) Universal Atlas Cement Co. Garv (3utfington Station), Ind. HANSON. Hans R. (R) 30004 W. Ten Mile Rd. Farmington. R.R.. Mich. (Hanson Co.) HANSON. James W. (S) Mineral Wells Clay Products, Inc. Box 92. Mineral Weils, Texas HARBERT. Carl J. (W ) Karshaw Chemical Co.. 1945 E. 97th St. Cleveland 6. Ohio HARBISON-W ALKER REFRA C TO R IES CO. (C. A. Brashares) 1300 Farmers Bank Bldg. Pittsburgh 22. Pa. HARBIN. Hugh P. 134 Jersey Ln.. Cemson. S. C. HARCOURT. Edward L. (M) North American Mfg. Co. 3810 West St.. Cincinnati 27. Ohio HARDER. Charles M. (DF) State University of New York College of Ceramics. Alfred. N. Y. HARDING. John Roy 4 Greenway, Horsham. Sussex, England (Sussex S: Dorking United Brick Co.. Ltd.) H A RD IN G E CO., INC. (Harlowe Hardir.ge) York, Pa. HARDINGE. Harlowe (B) Hardinge Co.. Inc.. York. Pa. HARDY. Ronald G. (SI) Onondaga 3rick Corp.. W arners, N. Y. HARES. George 3. (G) 15 Roosevelt St.. Corning, K. Y. (Corning Glass Works) HARGREAVES. John 33 Ellers Ave. Bessacarr. Doncaster. England (United Steel Co., Ltd.) HARGREAVES MILL LTD. - (A. W. Cook) Botteslow St. Hanley. Stoke-on-Trent. England HARKER POTTERY CO. (Robert E. Boyce) East Liverpool. Ohio HARMAN. C. G. (W F) Horizons. Inc.. 2391 E. 79th St. Cleveland 4, Ohio HARNISH. John D.. Jr. (W I) , Westinghouse Electric Corp. Derry, Fa. HARNISH. Mark E. 417 Peffer St.. Harrisburg, Pa. HARPER. J. Fletcher (W ) Globe-Union Inc.. 900 E. Keefe Ave Milwaukee 1, Wise. HARPER, Roderick L. (M) H arper Electric Furnace Corp- 39 River St.. Buffalo 2, N. Y. HARPER, Wallace T. (BJ) 3113-8 Trinity Ave., Los Alamos, N. M. (Los Alamos Scientific Lab.) R oster 43 :ARR. W. j '0 1 1 1235 Bcirotc, Mayficid Heights. Ohio I Harshaw Chemical Co.) iARRELL. George O. (D ) 3ox ICO", Sanford. \ C. (Stamy Shaie Prui'.uc3. '.r.c.l ! ~ KINGTON, Henry \V ( Gi f Stafford Ave.. Syracuse 6. N. Y. /oivay Process Div., Allied Chemical & Dye Corp.) IAHRINGTON. Roy V. (G. 10 Beaver Ave.. R.R. 2 Beaver Dams, N. Y'. (Corning Glass Works] {ARRIS CLAY CO. (Scroop W. Enloe, Jr.) Spruce Pine, X. C. 'A R R IS , George M. (Gi Haaovia Chemical 5t Mfg. Co. 100 Chestnut St.. Newark X. J. {.ARRIS. Henry M. (R ) 4114 42nd S.. Seattle IS. Wash. (U. S Bureau of Mines) '{A RRIS. James E. (S) 4685 S. Sherman. Denver, Colo. (Robinson Brick & Tile Co.) {A R R IS, Joe N. (EJ) 412 Florida Ave. S. E.. Atlanta 16. Ga. (Georgia Institute of Technology) {A R R IS, Ransom S. (I) Box 695, Newark. Ohio HARRISON. Harold C. (W) 235 Webster Park Ave. Columbus 14, Ohio (Westinghouse Electric Corp.) Ha r r is o n , wuiiam b . (b d 5325 \V. Hadley St. Milwaukee 10, Wise. (Allis-Chaiaiers Mfg. Co.) HARRISON. W. N. (E ?) National 3ureau of Standards Ind. 3 leg.. Enameled Metals Sect. Conn. Ave. A Van Xess St.. X. W. Washir.g-cn 35. D. C. T "{.SHAW CHEM ICAL CO. SCarl Harbert) 1945 E. 97th St.. Cleveland 6. Ohio KART. John M. !W) New Jersey Porcelain Co.. Box 908 Trenton 5. X. J. HART, John R. (W . 5810 rtggs Ave.. Erie. Pa. tE rie Resistor Corp. 1 HART. Lerov 7). rR) 707 Crompton Court Webster Groves 19. Mo. (Aluminum Co. of America) HART. Wade J. (GI) 908 Lafayette Court. Marion, Ind. (Radio Corp. of America) HA RTFORD. Thomas J. (W) 2783 Doresta Rd,, San Marino. Calif. (Gladding, McBean 5c Co.) HARTING. Louis 1007 Main, Rolla, Mo. HARTLEY'. Aiva G. H. Downing 5c Co. Ltd. Brampton Hit) Newcastle. Staffs. England HARTMAN. F. Henry (G) Stouffviile. Ont.. Canada (Crystal Glass 5c Plastics Ltd.) HARTSHORN. T. D. (El) A. J. Lindemann & Hovcrson Co. 601 W. Cleveland Ave. Milwaukee IS. Wise. HARTW IG. Frederick J.. Jr. (RI) Babcock & Wilcox Co.. Box 835 Alliance. Ohio HARVEY. A. M.. Jr. (S) Roanoke-Webster Brick Co., Box 780 Rnanoke 5. Va. RVEY, Edwin T. (R) 314 W. McPike St.. Vandalia, Mo. (Harhison-Walker Refractories Co.) HARVEY. Malcolm R. 80 E. Center St.. Kaysville. Utah Vol. 35. No. 10 (1950) 11ASKO, Stephen (W Ii 1510 Wheaton Lane. Sii'-er Spring, Md (National Bureau of Standards! HASSELBACH. William (G i Libbey-Owens-Ford Glass Co. 1701 E. Broacuay. T oiri. 5. Ohio HASSETT, William A. ' W". Radio Corp. of America Chemical & Physical Lab. 415 S. Fifth St.. Harrison. N. J. HASTINGS. Russell A. t.M' Lindberg Industrial Corp. 2321 W. Hubbard St.. Chicago 12. III. HATCH. Robert A. (B) 4135 N. Bellcvieiv Ave. St. Paul 10, Minn. (Minnesota Mining 5c Mfg. Co.) HATHAWAY, A. J. (R) 8721 Pershing Ave. Niagara Falls, N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) HATHAWAY. Isaac S. IW ) 1318 Tuttle Ave., Montgomery. Ala (Alabama State College: HATHAWAY, Mrs. V . G. <W) Alabama State College Montgomery, Ala. HAL'BEIN, Wendell L. (R J) 810 Seventh Ph, China Lake. Calif. (U. S. Naval Ordnance Test Sta.) HAUCK. Charles A. (R I) 8838 Swinton Ave.. Sepulveda. Calif. (Marquardt Aircraft Co.) HAUSER, Richard E. (I) 351 Moselle St.. Buffalo 1!. N Y HAUSLER. Elwood B. Box 787. Alfred, N. Y. HAUTH. Willard E-, Jr. fB) 409 Warminster, Hatboro. Pa. (International Resistance Co.) HAVEKOTTE. Walther L. (R) Firth Sterling, Inc. 3113 Forbes St.. Pittsburgh 30. Pa HAVELL. Richard " . (W ) 846 N. Euclid Ave.. Oak Park. 111. (Eagle Grinding Wheel Co.) HAVENS. Irvin F. (R) 2340 Norton Dr.. Augusta. Ga. (Babcock 5c Wilcox Co.) HAWES. Samuei A. (S) 301 N. E. Sixth Ave. Mineral Wells, Texas (Texeramics Co i HAWK. Elwin A. (M) Hawk Laboratories. Ire.. R.R. I East Rochester. Ohio HAWKINS. Robert J. ( SI) 20 Sunnyside PI.. Hamburg. N. Y (Buffalo Brick Corp.) HAWKS. Ralph L (W I) 525 W. Maxwell. Lakeland. Fla. (Florida Tile Industries, tnc.l HAWKS. William L. (R) 48 Chester Circle. Apt. 2A New Brunswick. N. J. (Sayreville Clay Co.) HAWS REFRACTORIES CO. (E. E. Slick. Jr.) 407 Main St. Johnstown, Pa. HAY. John Norton Co.. Research Lab.. Worcester 6. Mass. HAY. Joseph L. (R) Acme Brick Co., Box 448 Malvern. Ark. HAYDON. Mary P. (B) 106 Ogontz Lane. Oak Ridge. Tenn. (Oak Ridge National Laboratory! HAZEL-ATLAS GLASS CO. (Francis C Flint) 15th 5c Jacobs Sts.. Wheeling, W V. HAZEL, John J. (RF) Republic Bldg.. Rm. 1526 Republic Steel Corp., Cleveland 1. Ollin HAZEN, E. J. (GI) R.R. 2. Ford City. Pa. (Pittsburgh Plate Glass Co.) HEALY, Jaes H. (E l 4511 N. Sherman 3!vd. Milwaukee 9. Wise. (A. O Smith Corp.) HEATH. DonaiJL. (Bi Ohio 3rass Co.. Park & Xinih Barberton. Ohio KEATLEY. Sidney M. (Ei Babcock i Wi'.gox Co. 105 S. LaSalle Sc., Chicago J. 111. HECX. Frank G. (RI . J. (.aviso 5c Co., 3 Penn Center Plaza Philadelphia 2, Pa. HEDDELL. James V. (RI) 53-3 Decatur St.. China Lake. Calif. (IT. S. Naval Ordnance Test Sta.) HEDDEX. Walter A. (R) Bacteile Memorial Institute SOS Ktr-z Ave.. Columbus 1. Ohio HEDGES. Lee M CR) R.R. 4, Cedar Grove Rd. Somerville. N. J (Johns-Manviilc Corp.) HEDGPETH. James A. (S) Borden Brick 5c Tile Co., Box 1771 Durham, X. C. HEDIN, Claes Olof c/o Malardalens Tegelbruk Stockholm 3. Sweden HED0LTS7. Allred J. (W) Apartado Postal 52S Guadalajara. Jalisco. Mexico (Loza Fina S A.) HEEBXER. John C. (RI) 38 Pierce Rd., Watertown 72. Mass. (Harvard Business School) HEFTI. Franz Zrcher Ziegeleien. Postfach 357 Zurich I. Switzerland HE1DTMAN. Clarence F. (G) National Lime 3c Stone Co. First National Bank 31dg. Findlay. Ohio HEIL1GMAN. H. A. (RFI) E. J. Lavi.-.c <i Co . Sox 29 Norristown, Pa. HEIM SOE7H. Werner M. Farbenfabriken Bayer Aktiengesellschaft (22c! Leverkusen-Bayerwerk. Germany HEINDL. Raymond A. (RF) 4917 43rd St.. N. '.V, Washington 16. D. C. HEINE. H. W. (S) Hudson Supply 3: Equipment Co. 1727 Pennsylvania Ave., N. W. Washington 6, D. C. HEISCHMAN. Fred E. (W) 106 S. Adams St.. Fostoria. Ohio (Electric Auto-Lite Co.) HEL3ING. Clarence H. (G) Pittsburgh Plate Glass Co. Fiber Glass Div., Shelbyville. Ind. HELLER. Enrique 9i Cerro de Pasco Corp. La Oroya. Peru HELLIESEN. Richard 0. (E l)- ' ` Pemco Corp., 5601 Eastern Ave. Baltimore 24, Md. HELM. David F. (B) Meilen Institute. 4400 Fifth Ave. Pittsburgh 13, Pa. HELMKAMPF, R. N. (G) Lacledc-Christy Co. Div. H. X. Porter Co. 2000 Hampton Ave., St. Louis 10. Mo. HELSER. Perry D. (WFI) c/o Forrest. Clum. Thomville. Ohio (Consultant) HELZ. Armin W. (B) 20 Maryland Ave.. Gaithersburg, Md. (U. S. Geological Survey) HEMBERG. Per Surte Glasswork, Surte. Sweden HEMSTEGES, Samuel E. (E l) 4155 Audubon Rd., Detroit 24. Mich. ( Pemco Corp.) R oster 47 H 2X 3Y . E. . (MJ National Engineering Co. Stnip>ou Mix-MulJer Div. 549 W. Washington 3lvd. Chicago 6, Ul. i E N D ERSO N . Frank ?. Mj V Mockingbird Ln.. Tyier. Texas erro Corp., Allieti Engr. Div.j Hu REASON. Frederick C. (W FI) Royal China. Ine.. Sebrir.g, Ohio HENDERSON. James L.. Jr. (S) Robinson Ventilating Co. Zeitenopie, Pa. IE XDERSON. William W. (M) Robinson Ventilating Co., Box 217 Zelienople, Pa. HEXDREN. Robert R. (R I) 105 Bank Ave., Riverton. N. J. (Hoeganaes Sponge Iron Corp.) HEXDRYX. Dwight B. <S) Dwight B. Hendryx Sc Associates 6621 Darlington Rd., Pittsburgh 17, Pa. HENKEL. Carl F.t Jr. (C) Corning Glass Works. Coming. X. V. HENRAR. J. M. G. N. V. Porsclcin en Tcgcifabriek MOSA MAASTRICHT Meerssenerweg Maastricht. Netherlands HENRY. Edward C. (B FI) 730 Crawford Ave., Syracuse 10, N. Y. (General Electric Co.) HENRY. Frank R. (RF) Siiuonds Worden White Co. HOI Negley PL, Dayton 7, Ohio HENRY, Georges Directeur General a /s Union des Verreries Mcaniques Belges. 29, Quai de Brabant Charleroi. Belgium HENRY . Kenneth M. (G r) Owens-Illinois 1700 N. Westwood Ave., Box 1035 *~otedo 1. Ch io l LER. J. R. (G) -nemicai Research Lab. Bausch Si Lorr.b Optical Co. Rochester 2, N. Y. HEN SO N . Charles W. (R) Norton Co.. Worcester 6, Mass. H EN W OOD. Reginald J. <R) 9444 Lynnhaven Rd. Cleveland 30. Ohio (Republic Seed Corp.; HEPPLEW HITE. J. W. (W FI) 13557 Cedar Rd.. Cleveland IS. Ohio (Ferro Corp.) H ERBERT. John S. (S) W. G- Bush Sc Co.. 174 Third Ave.. N. Nashville 3, Tenn. HERBERT, John \V. (W ) 352J Anderson Pky, Toledo, Ohio (Brush Electronics Co.) HERBERT. Paul R. (W ) Sandyville. Ohio (StyIon Corp.) H ERBST. Richard J. 1619 Glenwood Ave., Joliet. 111. HERGER. Howard C. (G) Pierce Glass Co.. Port Allegany. Pa. HERKO. Edward (GO 392 Magee Ave.. Rochester 13. X. Y. (Bausch Sc Lomb Optical Co.) HERM AN. Clarence E. 222 Hillcrest Rd.. Raleigh, N. C. HERM ANN, Gunter Wheaton Do Brasil S. A. Caixa Postal 1461. Sao Paulo. Brazil HERM A NN. James L. (W ) 3288 Earimar Dr. Los Angeles 64, Calif. Redondo Tile Co.) K --.vOLD, Paul G. (8 F I) Radio Corp- of America Chemical & Physical Lab. Lancaster. Pa. VOL. :K. No. 10 (95G HERPEL. Clarence M .j S ; Southern Brick Tile, Inc. Cherokee Station, Box 5 Louisville 5, Xy. HERRON. Robert H. (R) ^ 1634 N . Iron wood D r., S outn Bend. Ir.w. ( Bemiix Products Div.) HERTZELL, E. A. (S) 1111 Chestnut St.. Dover. Ohio (American Vitrified Products Co.) MESS. B. Parker (G- Westinghouse Electric Corp. 700 Braddock Ave.. East Pittsburgh, HESS. F. B. (G) Brockway Glass Co.. Inc. Brockway, pa. HESS. Robert L. (R) 44 Hess Blvd., Lancaster, Pa. (Armstrong Cork Co.) HESSIXGER. Philip S. (BJI) Mycalex Corp. of America Clifton Blvd., Clifton. N. J. HEUER. Russeil P. <RF) General Refractories Co. 1520 Locust St., Philadelphia 2, Pa. H EW ITT, L. C (RFI) Ironton Fire Brick Co.. I ronton. Ohio HEW LETT. James Thomas (E) Jngram-Richardson, Inc. Frankfort, Ind. HICKS, James C. (BI) 27550 Edgerton Rd.. Los Altos, Calif. (Kaiser Aluminum i Chemical Corp.) HICKS, John F. G. (G) 131 Thompson Dr.. Painted Post. N. Y. (Corning Glass Works) HICKS. Robert G. (E) 608 21st. Bettendorf, Iowa (Herman Nelson Div., AAF) HIGGINS. Ray (W) 191 Overlook Ave.. Wadsworth. Ohio (Ohio Brass Co.) HIGGINS. Waldo W. <EFI) A. O. Smith Corp. Bex 534. Milwaukee '.. W: c. HIGGS. Harold P. (B) Automatic Manufacturing Co. 65 Gouverneur St.. Newark 4. N*. J. HIGHLEY. Robert W. (R) Richard C. Remmcy Son Co. 2382 W. Liiierty Ave. Pittsburgh !6. Ps. HXGMAK. JO HN W.. CO. (Robert J. Stone 24 State St. New York 4. N. Y. HILDEBRAND. David <\V) R.R. 3. Hixson. Tenn. (American Lava Corp.) H IL L . D avid C. Box 787. Alfred. X. Y. HILL. Ercell C. ( S r ) 109 Morton Ave.. Apt. 5 Ridley Park. Pa. HILL. John R. (S) 806 Scenic Dr., Charleston. W. Va. tCharleston Gay Products Co.) HILL. Lawrence I. (G) 507 Carver Bird.. Toledo 7. Ohio (l.ibbey-Owcns-Ford Glass Co.) HILLING. James I... Jr. 129 Maple Ave.. Altoona. Pa. HINCKLEY. Arthur T. (R) Oldbury Electro-Chemical Co. Niagara Falls. N. Y. HIN D. Stanley "The Mount," Etruria Rd. Bastard. Stoke-on-Trent. England (Consulting Engineer) H INDES. Stanley V. (M) 88 Union Ave.. Pittsburgh 5, Pa. iPemco Com.) HINDS. J. F. (G) Canadian General Electric Co. 221 DuiTcrin St. Toronto 3. Ont.. Canada HINES. Robert A. (B) 8729 Radley Ct., Brentwood 17, Mo. (Missouri Portland Cement Co.) H IN KINS. . A. (Ci Tygart Valley Glass Co.. Box 503 Washington. Pa. HINTZS. WoIImar W :son Agatan 12. Bromolla. Sweden i A.. B. Ifavtrkcn i H tRSSIG. Carl F. :Gi 1210 For: Si.. Maumee. Ohio (National Lime i Stone Co.) HISCOCK. Harley J. (R) Fuilcr Mcrr:a:n Co.. 3ox 69 West Haver.. Conn. Pa.HITCHINS. R. A. <.R ) National Refractories Co., Inc. 17th Floor, Lewis Tower Bldg. 225 S. 15th St.. Philadelphia 2. Pa. HITNER. Jan K. (R) 1429 Sandra Dr.. Fort Myers. Fla. HITZEMAX. Roger L. (W I) Globe-Union Ir.c., 900 E. Keefe Ave. Milwaukee 1. Wise. HOARE. Henry A. (W) 2655 Sbarondaie Dr., N. E. Atlanta. Ga. (Georgia Sanitary' Pottery, Ir.c.) HOBSON. Joe P. (S) Acme Brick Co.. 3ox 425 Fort Worth 2. Texas HOCH. Arthur E. <W) Cranc-Pacinc Co. 330 W. Citrus St.. Colton. Calif. HOCH. Michael (3 ) L*niversity of Cincinnati Dept. Chem. Sc Met. Engr. Cincinnati 21, Ohio HOCKING. William J. (W ) 1612 Pennsylvania Ave. East LivcrpooL Ohio (Hall China Co.) HODGDON. Frank B. (3) Box 4132. X. Chattanooga Sra. Chattanooga 5. Tenn. (Tennessee Products Sc Chemical Corp.) HODGES. Leslie R., Jr. Box 14CO. Atlanta. Ga. HODSON. George N. The Hall. Wyrr.eswoid Nr. Loughborough. England (Hatherr.ware. Ltd.) HODSON. Jean E. 4203 Brooklyn. Seattle 5. Wash. HOEHL. Joseph W. (E) Wolverine p-rreeiain Enameling Co 3350 Scotten .Ave.. Detroit 10. Mich. HOELSCHER. Max W fE) 5010 Mayfield Rd.. Lyndhurst 24, Ohin ( Enamel Products Corp.) HOENIG. Clarence L. 4325 Lawn Ave.. Western Springs. III. HOEY. Paul . tS) Texas Vitrified Pipe Co. Box 117. Mineral Weils. Texas HOFFMAN. Sidney C (G) 1646 Lindy Lane. Lexington. Ky. (Sylvnnia Electric Products. Tnc.) HOFFMAN. Willard H. J. (M) 3 Dungarric Rd.. Baltimore 28,, Mri (Clinchneld Sand & Feldspar Corp ) HOFFXER. Jere R. (G) T C. Wheaton Co.. Millville. N J. HO FSTETTER. G. W. (E) Ferro Corp.. 336-338 N. Central Ave Chicago 44. III. HOGAN. Thomas W. (W) FJintridgc China Co. 350-380 S. Ravmond Ave. Pasadena 1. Caiif. HOGARTH. William.-Jr. Box 3829. Georgia Tech., Atlanta, Ga. HOGF. NDOBLER. H. R. (G) Gust in-Bacon Manufacturing Co. 3031 Fihergias Rd.. Kansas City. Kans. HOGENSON. William (E) Chicago Vitreous Corp. 1425 S. 5Sth Court. Cicero SO. 111. flOHMA.YX. Frederick R. ( G) 1012 Parkview Ave. New Kensington, Pa. (Pittsburgh Plate Glass Co.) R oster 49 OLADY, Harold V,-. Box -16. Sphrata. Wash. OLDEN. Roten 3. Bl Sylvania Electric products Atomic Energy D:v Box 2?. 3ayside. N Y. C NER. Irwin K. (S ) ' Saysidc Dr.. Dayton 3, Ohio i %>right* Patterson AF31 OLL. Barton A. (S Logan Clay Products Co. Box 698, Lcgan. Ohio OLL, Barton S. ( Si 311 W. Front St.. Logan. Ohio (Logan Clay Products Co.) OLLEY. Kenneth E. (R) 113 Pritchard Ave.. Corning. N. Y. (Corning Glass Works) OLMES, Gregory J. Rutgers University. 3ox 215 New Brunswick. N. J. OLMES. Lyle A. <M) 82 Pilgrim Rd., Rosslyn Farms Carnegie. Pa. (Great Lakes Foundry Sand Co ) OLMES. Roland G. (S) W. S. Dickey Clay Mfg. Co., Box *02 Pittsburg. Kans. OLMSTSO.M. Joseph H. (RI) 11211 Washburn Ave., S. Bloomington 20, Minn. (General Reiractories Co.) OLSCHER. H. H. (GF) Owens-Illinois Box 1033, Toledo I. Ohio LST. Tage Vinkelvej lo. Xongens Lyngby, Denmark (Porcelaensiabriker. Danmark A/S) OLTERH OFF. A. Gray (M) National Sales Corp. 307 E. Fourth St.. Cincinnati 2. Ohio OLZMAN. George R |G ) Meilon institute. saQO Filth Ave. sburgn i3, ?a. t EL. E. M. fEFu . Homrr.ei Co . Box 475 Pittsburgh 30. ?a. IOMMEL. O.. CO. (E . M. Hommei) Box 473, Pittsburgh 20. Pa. OMVELD. G. H. A. Av. La Colirta, Quinta "Alicia" Los Chaguaramos Caracas. Venezuela OXSBERG. W erner (W ) Apartado 303. Mexico D. F.. Mexico (Fabrica de Loza Ei Anfora, S. A.) OOD, Clyde (G) Leeds & Northrop Co. 1922 E. 107th St. Cleveland 5. Ohio !OOD. Harrison P. (GF) 260 Delevan Ave.. Corning. N. Y. (Corning Glass Works) :OOD, L. Scott (I) . Orton Ceramic Foundation 1445 Summit St.. Coiumbus. Ohio :o o p . m . c. v. d. N. V. Royal Delft Ware Manufactory. " De Porceleyne Fles" v /h Joost Thooft 3c Labouehere 196 Rotterdamscheweg, Delft, Holland IOOPER. Bradford (S ) 3 Point O'Woods Lane. Darien. Conn. (Babcock & Wilcox Co.) OOTON. Norris A. Box 367, Clemson, S. C. tOOVER. Charles H. (R) 609 Wilton Rd., Towson 4, Md. (General Refractories Co.) IT N S. Robert W. (GI) iimite Co., Box 131 ..amilton. Ohio IOPPER. R. T. (D) Hanovia Chemical & Mfg. Co. 1 W. Central Ave.. East Newark. N. J. ol. 35, No. 10 (1956) HORAK. William iRFi.i 223 Raymond Rd. West Hartford 7, Conn (H artford Empire Div.. Emhart Mfg. Co.) HORNER. It. Harlan 4737 17th N. E. ot., Seattle Wash. HORNING. Roy A. i C r i l Armstrong Cork Co . Lancaster. Pa. HORNUNG. Martin R iW I) 140 E. Sheridan Ave . New Castle. Pa (Shenango China. Ir.c.) HORTON. Paui B. (W !) Insulator Dept.. General Electric Co. Box 57, Baltimore 3, Md. HOSBEIN, Roger L. (R) 13 Standish St.. Frostburg, Md. (3 ig Savage Refractories Div.) HO SSEN LO PP. Arthur M. (W I) 921 Maplewood Dr.. Kokomo. Ind. (Detco Radio Div.. General Motors Corp.) H O STETTER, J. C. (G FI) 1561 Dale Ave., W inter Park, Fla. (Consultant) HOUCHINS. Henry R. (W ) Carborundum Co.. Niagara Falls. N. Y. HO UDESH ELL. Robert J. (M) 21S Basswood Ave.. Apt. B Dayton 5, Ohio (International Clay Machinery Co ) HOUGHTON. Armory (G) The Knoll, Corning, N. Y (Corning Glass Works) HOULAHAN, R. C. (S) Builders Brick Co. 3800 Ninth Ave.. S.. Seattle. Wash. HOUSE, Roger L. Box 787. Alfred, N. Y. HOUSMAN. George S. (R) Box 17, Norristown. Pa. HOUSTON. M. Dean 507 Linden Rd.. State College. Pa. HOUZE, Armand L.. Jr. (G) Houte Glass Corp-. Point Marion. Pa. HOWARD, Harold B. 828 S. Ellis St.. Salisbury. N. C. HOW AT. W alter L. ( D r ) W alter How-at Decorative Ceramics 8S Hopping Ave., Staten island 7, N. Y. HOW ATSON, John (Gr University of Wyoming Chemist!-.- Dept.. Laramie. Wyo. HOW ATT. Glenn (W ) Bldg. 6-5. Apt. 3. Redfieid Village Metuchen, X. J. (Gleneo Corp.) HOWE. Elroy E. ( E r l) Chicago Vitreous Corp. 1423 S. 55th Court. Cicero 50, III. HOW ER. Lawrence D,, Jr. (RI) Raybcstos Div., 75 E. Main St. Stratford, Conn. HOW ER. R. S. (B l) Allen-Bradley Co. 136 W. Greenfield Ave. Milwaukee 4. Wise. HOW IE. Thomas W. Campbell 3c Co. (Roughcastle) Ltd. Roughcastle Works. Falkirk. Scotland HOYET, Eugene (G) R. R. 2. Box 332, larentum . Pa. (Pittsburgh Plate Glass Co.) HSU. Ku-hua 1, King's Terrace. 1 Floor Kowloon. Hongkong. B.C.C. (Kiu Foong Enamel Factory (HJC.) Ltd.) HUBBELL. Dean S. (E) Meilon Institute, 4400 Fifth Ave. Pittsburgh tJ. Pa. HUBER, George S. (E) 314 Overbrook Rd., Baltimore 12, Md (Pemco Corp.) HU BER. Harold V. (G) 1300 Rancho Rd.. Arcadia. Calif. H U BER. J. M,, CORP. (D. P. McAdoo) 100 Park Ave.. New York. N. Y. HUBER-WARCO CO. AMERICAN CLAY MACHINERY DIV.. Bucyrus. Ohio HUDSON. Charles (RI 7J Neivton St.. Wes: Hovlston. Mass. H U D SO N SU PPLY i EQ U IPM EN T CO. (H. W. Kernel 1727 Pennsylvania Ave.. N W Washington 6. D. C- HUETTiG. Fred S. ;W I: 296 3rock Ave. North Plair.neld. N. J. I General Ceramics Corp.) KUFFCUT, Harold W. (G) \ \ estir.ghouse Electric Corp Electronic Tube Div., Box 234 Elmira. N. Y. HUGHES. George B. (E) 236 Indiana Ave.. Dayton 10. Ohm (rrig id aire Div., General Motors Corp.) HUGHES. W alter M. (W I) S34 Putnam Ave.. Zanesville. Ohio (Chicago Standard Transformer Corp.) HUGHEY. Vaughn V. (B) Basic. I.uc., Mapie Grove. Ohio HU I. William L. C. (B) Radio Corp. of America. Tube IHv. Marion. Ind. HUKE. Frank 3. (R) Norton Co.. One New Bond St. Worcester, Mass. HULL. J. Brannon (W ) Hull Pottery Co., 327 Amerine St Crooksville. Ohio HULL POTTERY CO. (J. Brannon Hull) 327 Amerine St. Crooksville, Ohio HULSE. Charles O. 2240 Dwight Way, Berkeley 4, Calif. HU M ENIK. Michael. Jr. (B) 28477 Parkwood Dr.. Inkster, Mich. (Ford Motor Co.) HUMMEL. Floyd A. (B) College of Mineral Industries Pennsylvania State University University ark. Pa. HUMMEL. Richard (G) 615 Olympia Rd., Pittsburgh 11. Pa. (H arshaw Chemical Co.) HUMMEL. Roy (W ) 4313 Grar.tlev Rd.. Toledo 13, Ohm (Champicn Spark Plug Co.) HU M PH REY . Richard A. (W ) Mycaiex Corp. of America Box 311. Clifton. N. J H U M PK RY ES MANUFACTURING CO. (D. J. Jones) 201 E. Fifth St. Mansfield. Ohio HUND. George J. (W ) 227 Poplar Ave. N. W.. Canton, Ohio (Sparta Ceramics Co.) HUND. Ralph (R) Speer Carbon Co.. Theresia St. St. Marys. Pa. HU NGERFO RD. R. M. <X) Ciayburn Co.. Ltd., 850 W. Hastings St. Vancouver 9. B. C., Canada HUNT. Charles W. (W ) .. 134 Vincent St.. Chagrin Falls, Ohio fCertain-Teed Products Corp.) HUNT. Herbert J. iG) Kimble Glass Co.. Vineland. N. J HUNT. John F. (MI) Carpco Engineering & M anufacturing Co. Jacksonville, ria. H U N T E R . Charles E. (M) Box 430. Erwin, Tenn. /Consolidated Feldspar Dept., International Minerals & Chemical Corp.) H U N T IN G . Everett C. (GI) 2030 Grove St.. Berkeley 4, Calif. ( Microchemical Specialties Co.) HUP PERT. Paul A. (El) 414 Randolph Rd.. Plainfield. N. J. (General Ceramics Corp.) H U RD. Burgess M. (W ) 3 Windy Crest Rd,, Beaver Fails. Pa. (Ceramic Color & Chem. Mfg. Co.) Roster 51 HL'RLEV, Robert E. (3 ) 469 Camden Ave. M ooreatoun. Burlington County. X. J. SCA Victor) HURLEY. T ?. (3) Sprague Electric Co. INDIAN CERAMIC SOCIETY (H. N. Roy) Dept, of Ceramics Benares Hindu L'niv . Benares, India INDIANA GLASS CO. Dunkirk, Ind. INDUSTRIAL CERAMIC JABEUSCK. Arthur J. (S) Pomona Terra-Cotta Co. Greensboro, N. C. JACKSON, A. Curtis (S F I) ''o rth Adams, Mass, PRODUCTS, INC. -C. R. Oberst) Robinson 3r:ck 4 Tile Co. r JT. Erwin J. (W ) ruerai Ceramics Cor?. 965 W, Fifth Av,, Columbus 8. Ohio 1NGERSOLL. Harry (E , 500 S. Santa Fe Dr., Denver, Coio. JACKSON, James Plant J, Research Dept. Keasbey, N. J. 455 S. Catalina St. Los Angcies 5, Caiii. Avochaugh, Sionehousc Lanarkshire. Scotland H U RST. Thc.-ras L. (R) ( Pemco Corp. f JACKSON. Mary A. Monsanto Chemical Co. Everett ta.. Boston 49( Mass. INGHAM. David (W ) Box 546. Kittanning, Pa. 486 Boynton Ave.. Berkeley 7, Calif. JACKSON T IL E MFG. CO. H U T C H IN S. John R.. III Massachusetts Institute of Technology (E ljer Division) INGRAM-RICHARDSGN, INC. (R. T. Lowrance) Box 2006 Jackson. Miss. Rin. 4-051, 77 Massachusetts Ave. Cambridge 59, Mass. H U TCH ISON , Clark (E F I) (R. H. Coin) Jefferson Rd. Frankfort. Ind. IXSLEY. Herbert (BF) JACKSON V IT R IFIE D CHINA CO. (Philip R. Distillator) 2 West St. Pelham Manor 65, N. Y. 709 E. A rm strong Si.. Frankfort. Intl. (Ingram Richardson, Inc.) H U TC H ISO N . R. C. (R I) 5219 Farrington Rd. Washington 16, D. C. (Consulting Mineralogist) JACKSON. Wharton (M) W harton Jackson Co. 475 Huntington Dr. 2155 Newton Ave., Bethlehem, Pa. <Bethlehem Steei Co.) HL'TT. Cicnn A. (E F ) 19629 Scottsdale Blvd. IXSLEY, Robert H. (B) Champion Spark Plug Co.. Ceramic Div. 852S Butler Ave.. Detroit 11, Mich. INSTITUT de CERAM IQ UE San Marino 9. Calif. JACKSON. William M.. II (W ) 13 Maura Dr., Woburn, Mass. (Godfrey L. Cabot, Inc.) Shaker Heights 22, Ohio FRANAISE JACOB, Bernard T. (RI) (Ferro Cor?.) (Louis Desmarquest) 6 Grande-Rue National Crucible Co. HL'TT, Cordon M. (R ) Sevres (S. 4 O.). France Mermaid Lane 4 Queen St. Canadian Pacific Railway Insulator-- See General Electric Co. Philadelphia 18, Pa. 705 W indsor Station INTERNATIONAL CLAY JACOBI. James H. (E) Montreal J, Que., Canada M ACHINERY CO. (R. H. McElroy) Avco Manufacturing Corp. ilL'YCK. L. G. (E ) 1145 Bolandcr Ave.. Davton 1, Ohio Crosley-Bendix Home Appliances Div. Huyck Construction Co. INTERNATIONAL COMMISSION Dept. 474, Nashville 1, Tcnn. 1861 DeCook Ave., Park Ridge, III. ON GLASS (B. P. Duddtr.g) JACOBS. Charles W. F. (W ) HYATT, Edmond P. Research Laboratories 19 A Longmeadow Rd. 5499 Fleetwood Dr. General Electric Co.. Ltd. Eggertsville 23, N. Y. Sait Lake City 9, L'tah Wemblcv. Middlesex. England (Titanium Alloy Mfg. Div., ilY D E . Collin (R I) IRLAXD, David L. National Lead Co.) 581 O xford St., Worthington, Ohio Box 787. Alfred. N. Y. JACOBS. H. (Battcilc Memorial Institute) IRONTON FIR E BRICK CO. Box 117. Vereeniging HYLAND. J. A. (E) Pacific Coast Borax Co. (J. H. Rickey, Jr.) Box 556 Ironton. Ohio Transvaal. South Africa JACOBS, Louis J. (R) 5456 W. Peterson Ave., Chicago 45. 111. IRO Q U O IS CH IN A CO. Ramtitc Co.. 2565 W. ISth St. HYNES. Frank J. (W I) (Rolerr E. Anderson) Chicago S. 111. (bow Sd., Wayiand. Mass, 2320 Milton Ave.. Svracuse 9. N. Y. JACOBS. Richard A. (G) iaytheon Mfg. Co.) IRVINE. George C. (W I) Brockway Glass Co., Inc. HY v l LE. Andre Canadian Carborundum Co., Ltd. 3rockway. Pa. Socit Generale de Carreiages Niagara Falls. Ont.. Canada JACOBSON._Ec ( p 57. rue Leon Blum Feignies (Nord), France IRW IN. Joseph T. (E) 1618 Elmwood Ave., Lakewood 7. Ohio Xtavrag Co.. Newton. Iowa JACOBY. William R. MYSLOP. Joseph F. (Consultant) 241 Upson Lane. University Heights "D rom ore," M ajors Loan Falkirk. Scotland (J. G. Stein it Co.. Ltd.) I AXDER. J. Richard (M) Ceramic Sears, 509 S. Beverly Dr. Beverly Hills, Calif. IC H IK A W A . Y oshio t\V ) 1905 H anover St.. Apt. 10 Pittsburgh 13. Pa. (Westinghouse Electric Corp.) IHRIG, Allen C. (G) 127 Corning Blvd.. Corning, N. Y. (Corning Glass Works) ILES. Ramon R. (G) 2223 St. James Ct,, Owensboro, Ky. (Gnrai Electric Co.) ILIFF. Fred X. (W) Harshaw Chemical Co. Jackson it Swanson Sts. Philadelphia 48, Pa. iI.LING. Arno M. (W ) 5412 Laconia. Cincinnati 37, Ohio (Cambridge Tile Mfg. Co.) IL LIN O IS CLAY PRODUCTS CO. (How ard F . W est) 68 N. Chicago St. Joliet. III. IRW IN. Philip P. (W ) New Brunswick. N. J. Potters Supply Co. JAFFE. 3err.ard |B D East Liverpool. Ohio 4238 Hinsdale Rd. IRW IN. William W. (W ) South Euclid 21. Ohio Potters Supply Co. (G evite Research Center) 11 Washington St.. East Liverpool. Ohio JAM ESON. Robert J. (G) ISAACS. Richard P. (Ml Libbey-Owens-Ford Glass Co. 78 Elmwood Dr.. Livingston. N J. 1701 E. 3roadway. Toledo 5, Ohio (Hammill 4 Gillespie. Inc.) JAM ISON. C. Donald. Jr. (R) ISAGAWA. Jun Koppers Co.. Inc.. Eng. 4 Const. Div Nippon Toki Kaisha, Ltd. Koppers Bldg., Pittsburgh 19, Pa. --1, Koritakeshinntacbi, Nishiku JANKE. Charles E. (S) Nagoya, Japan 4633 Horton Rd. ISELIX. Charles W. (GJ) Garfield Heights 25. Ohio Thatcher Glass Manufacturing Co. (Oeveland 3uilders Supply Co.)' Elmira. X. Y. JA N K O W SK I. Charles R. ISEXHOUR. C. W.. Jr. (S) 16 Hakes Ave.. Homeil. N. Y. Isenhour Brick it Tile Co.. Box 1249 JANSEN. Gerard F. Salisbury, N. C. Box 2517. Georgia Tech., Atlanta. Ga. ISENHOUR. John H. (SF) JANSMA. Frank (M) 215 Confederate Ave.. Salisbury. N. C. B. F. Drakenfeld 4 Co.. Inc. (Isenhour Brick 4 Tile Co.) Washington. Pa. ITO, Sbozo Nippon Gaishi Kaisha, Ltd. 1. 2-Chome. Horita-dori. Miiuho-lcu JA NSSEN . William F. (M) 15 Oak Ridge Rd., Basking Ridge. N J (Bell Telephone Labs.) 1 Nagoya, Japan JE F F E R Y . Benjamin A. (W ) ITSCHNER, Robert Tannenraucbstrasse 106 Box 32, Tumacacori, Aria. JEFFREY. G. H. (W) LLY N. Alexis V. Zurich 38. Switzerland Roder Ceramic Studio. t J J l Race St. 183 Bevier Rd.. University Heights (Tonwerke Thayngen AG) Philadelphia 7, Pa. ">w Brunswick, N. J. IVES. John B. (RI) JELIN EK . James W. (BJI) IX 1'F, Edward J. (M ) --nited States Glass Co. 18 Standish St.. Frostburg. Md. (Big Savage Refractories Div.) 1203 Seventh Ave.. Marion. Iowa JEN K S. C. E. fB) Glassport, Pa. IVEY. J. Ray (S) W . S. Tyler Co. X1MEDIATO. Robert R. (W I) Sprague Electric Co.. Nashua. X. H. Acme Brick Co. R.R. 1. Millsap, Texas 3615 Superior Ave., N. E. Cleveland 14, Ohio Vol. 35. No. 10 (1000) Roster 33 JENN INGS. James W. (E) Quaker Silver Co.. Inc. North Attleboro, Mass. JEN SEN . Edwin K. <E) 11255 Minden Ave., Detroit 5. Mich. (Briggs MiJ. Co ) 'SEN. Robert 0 . (S; ateo Corp., Waynesburg, Ohio j e .? ? SON. George N. (RF) Norton Co., One New Bond St. Worcester 6. Mass. JERO. Parker (E) 932 Birch wood Dr., Washington, III. (Caterpillar Tractor Co.) JE R V IS. Julian S. 750 Fowler St. N. W., Atlanta, Ga. JHUNJHUNWALA. K. P. (J) Orissa Industries, Ltd., P. O. Barang Disc. Cuttack, Orissa, India JIM MERSON. James E. (S) Henderson Clay Products, Box 870 Henderson, Texas JOHNS-M ANVILLE SALES CORP. (J. C. Crawford. Jr.) 22 E. 40th St. New York 16. N. Y. JO H N S. William V. (W ) Shenango China Inc., New Castle, Pa. JO H N SO N . Alexander H. H. L. Brisbane 2t Wunderlich Ltd. Lord St., East Perth, West Australia JO HNSON. Alton E. (W I) 4905 N. 53rd St.. Milwaukee, Wise. (Globe-Union, Inc.) JO H N SO N . A. L. (W F ) Universal-Rundle Corp. W . Keith McAfee Lab.. Box 1258 Mahoningtown, Pa. JO H N SO N . A. M. (R) Ross-Taconv Crucible Co. Robbins & Milnor Sts. Philadelphia 35. Pa. JO H N SO N . Ben (SJ) 5224 Valley Oak Dr , Austin 3, Texas (University of Texas) ' O f SON, Boyd ..(. ,3 ) Carborundum Co.. Box 258 Perth Amboy, N. J. JO H N SO N . Bruce M. 353 Highland Dr.. Seattle 9. Wash. JO H N SO N . David M. (BJ) 510 Southland Blvd.. Louisville 14. Ky. (Cornar Refractories Co., Inc.l JO H N SO N . Dudley B. (E) Glasete Products. Inc. 20900 St. Clair Ave.. Cleveland 7. Chio JOHNSON. Earle K. (S) Eureka Brick & Tile Co. Box 338. Clarksville. Ark. JO H N SO N . Eiwin L. 1107 W . Green St.. Apt. 225 Urbana. !!!. JO HNSON. Fred H.. Jr. (S) Summitville. Ohio (Summitville Face Brick Co.) JO H N SO N . George E.. Jr. (RI) North American Refractories Co. Curwensville. Pa. JO H N SO N . Gordon H. (E) 24188 Gessner Rd. North Olmstead, Ohio (Ferro Corp.) JO H N SO N . Harold C. (G) Corning Glass Works Corning, N. Y. JO H N SO N . J. A. Progress Engineers. Ltd.. Leek New Rd. Cobridge, Buralem Stoke-on-Trent, England JO HNSON. James E. (W JI) 3172 Herrick Rd., Columbus, Ohio (United States A ir Force) JOHNSON, James R. (BI) ) Oak Knoll Dr. Vhite Bear Lake 10. Minn. (Minnesota Mining 3t Mfg. Co.) JO H N SO N . Keith A. 3722 W arren St.. N. W. Washington 15, D. C. V ol. 35, No. 10 (1950) JOHNSON, Keith N. 441 Westwood O r. Ames. Iowa JOHNSON. Larry R. 3529 Ivy Rd.. Atlanta 5. Ga. JOHNSON. LeRoy A. ( E . 1206 Cleveland St.. Evanston. III. (Chicago Vitreous Corp.) JOHNSON, Norman W. (R ' Eaton Manufacturing Co. 9771 French Rd.. Detroit. Mich. JOHNSON. Paul V. (S F . Structural Clay Products Research Foundation. Geneva. 111. JOHNSON. William A. (E) 7269 Greenlcaf Avc. Cleveland 30. Ohio (Ferro Corp.) JOHNSTON. J. G. Leeds Fireclay Co.. Ltd. Wortley. Leeds 12, England JOHNSTON. James K. (M l R. R. 5. Hagerstown. Md. (Fairchild Aircraft Div.) JOLLEY. Robert W. (R) 10 Ox Bow Lane. Bloomfield. Conn. (Hartford-Empire Co.) JONES. Cecil M.. II (R) Box 65, Greendale Sta. Worcester, Mass. (Norton Co.) JONES. D. J. (W ) Humphryes Mfg. Co. 201 E. Fifth St.. Mansfield, Ohio JONES. Frank L. (G) Koppers Co.. Inc.. 3ox 123. Verona. Pa. JONES. George A. (W ) 3411 Central Ave.. Parkersburg. W. Va. (United States Ceramic Tile Co.) JONES. Glen A. (B) Shreve Manufacturing Co.. Shreve. Ohio JONES. Howard E.. Jr. (R) 19150 Robson. Detroit 35, Mich. (Jones-Munale & Co.) JONES. Maynard J. (E ) Pfiutiler Co. l f jf , `.Vest Ave. Rochester U . N. Y. JONES M ETAL PRO D U CTS CO. (Edwin F. Mulligan > West Lafavette. Ohio JONES. Paul R. (X) West Virginia University Dept, of Chem. Engr. Morgantown. W. Va. JONES. Raymond B. (W ) Naticnal Tile & Manufacturing Co. 1200 E. 26th St.. Anderson. Iml. JONES. Richard E. (R> Pittsburgh Plate Glass Co. Research Laboratory, Creighton, Pa. JONES. Robert O. (R) Standard Slag Co. Box 3. Garths. Nev. JONES. Roger D. (R) 28 Cushing Pl,, Buffalo 20. N. Y. (Electro Refractories & Abrasives Corp.) JONTZ. Melvin L. (M) 5028 Alhambra Ave. Los Angeles 32. Calif. (Melvin L. Jontz Co.) JORDAN. John N. (G) Consumers Glass Co. Ltd. Box 456, Station B. Montreal. Que.. Canada JORDAN. John W. (M) Baroid Div.. National Lead Co. Box 1675, Houston 1. Texas JORDAN. R. E.. Jr. (W ) Mosaic Tile Co.. Zanesville. Ohio JORDAN. Thomas B. (S ) Mosaic Tile Co.. 829 N. Highland Ave. Hollywood 38, Calif. JOVA BRICK W ORKS (J. L. Jova) Soseton. N. Y. JOVA. J. L. (S) Jova Brick Works. Roseton, N. Y. JOYNER. Bobby L. (W ) Erie Resistor Corp., 644 \V. 12th St. Erie, Pa. JU DKIN S, Robert W. tW* Wilbur 3. Driver Co. 1375 McCarter Newark 4. N. J. JU ELSS. David (Ml American Lead Psncii Co. 560 Willow Ave., Hoboken, N. J. K KAC1CZ. Joseph M., Jr. 210 Clinton Rd.. Wes: Caldwell. N. J. KADEY, Frederic L.. Jr. (B) 1825 Quiraby Lane, Westfield, N. J. (Johos-Manville Corp.) KAKLSON, W. S. CG) General Electric Co., Lamp Dept. Pitney Glass Works. Nela Park 12 Cleveland, Ohio KAHN, Max (G) 4932 Oleander Dr., Wilmington, N. C. KAISER. Leonard F. (G) 332 E. Wayne St.. Maumee, Ohio (Libbev-Owens-Ford Glass Co.) KAISER. William E. 3103 3ellwood C:.. Apt. II Columbus. Ohio KALLUP. Charles. Jr. (W I) Heiipot Cor?.. 916 Meridian Ave. South Pasadena. Calif. KALMAN. Frank R. (E l) 2014 Easterly Rd., Lakewood 7, Ohio (Pemcp Corp.) KALMBACK. William J. (C l Kimble Glass Co. 1700 N. Westwood Ave.. Toledo, Ohio KALOUSEK, George L. (G) 2633 Merritr.ac Blvd., Toledo 6, Ohio (Owens-Illinois) KAM ICH. Barr.et Z. (3) 11 Garwood St.. South River, N. J. (Army Ordnance Corps) KAMLER. Anthony R._ 713 Seventh Ave.. Ford City. Pa. KANAZAWA, Edward 12333 Sylvan S:. North Hollywood. Calif. KANE. John L. (W ) 3457 Wicklow Ave . Cincinnati 36. Ohio (Cincinnati Milling Machine Co.) KANTOR. Net! I. ( Wl 198 Mason Dr., Metuchen. N. J. (Crowley Div.. Aerovox Corp.) KAPADIA. Horn: Ei 502id N*. Fourth St.. Niles, Mich. (Kawneer Co.) KARKKANAVALA. M. D 239, Botawaia Bldg.. Tardeo Bombay 7. India (Atomic Energy Commission) KARNAS. John S. 718 Echo A v e .. Zanesville. Ohio KASSEL. Robert (W ) Lenox. Inc.. Pomona. N. J. KASSEES. John 3. (B) American Testing Lab., Inc. Box 1421. Lancaster, Pa. KAST. Edward T. " Box 847. Alfred. N. Y. KASTEN. Vernon L. (W I) Thrr Oaks. Box 84. Jackson, Mo. (Ceramo Co. Inc.) KASTENBEIN. Ernest L. (W ) 100 E. Van Ness Ave., Rutherford. N. J. (T ile Couneii of America) KATZ. Joseph M. (W tl 625 E. Fifth St.. Brooklyn 18, N. Y. KATZ. Sigmund (E ) Orange Ceramic Lab. 17 Kenz Terrace. West Orange. N. J. KAUFFMAN, John R. (M FI) 160 Fairview Ave.. Elmhurst, III. (T uttle !c Kift, Inc., Subsidiary Ferro Corp.) KAUFFMANN. Otto T. (W ) Frontenac Floor St Wall Tile Ltd. Kingston. Ont.. Canaria KAUTZ. Karl (E FI) 24 Leon Rd.. Pittsburgh 20, Pa. (Vitro Mfg. Co.) Roster 55 KAY. William I . (R) E. J. Bartcils Co. 1213 Sixth Ave.. S , Seattle 4, Wash. KAYSER. Julius A. (R l Cladding. Me Sean it Co. 3901 Los Feiir Slvd. .os Angeles 39. Caiif. NEY. J. C. (Cl 1201 Banksviile Rd.. Pittsburgh 16, (National Lime it Stone Co.) KEANEY. Joseph C.. Jr. (G> Feldspar Corp.. 1201 Banksviile Rd. Pittsburgh 1$, Pa. KEANEY. Robert C. (G) St. Lawrence Fluorspar. Inc. 1201 Banksviile Rd.. Pittsburgh 16, Pa. KEARNEY, John P. (G) 2723 Denstnore Dr.. Toledo 6. Ohio (Kimble Glass Co.) KEBLER, Leonard (E ) W ard Leonard Electric Co. Ml. Vernon, N. Y'. KEEFE. Robert M. (R) 133 Puritan Rd., Plymouth Meeting, Pa. (Mullice Refractories Co.) KEEFER. George E. (G) Owens-Illinois, Technical Center 1700 N. Westwood Ave. Toledo 1, Ohio KEENER. Harry T. R. R. 3, Minerva, Ohio KEHL. Nelson H. (R l) E. J. Lavino & Co. Box 39, Norristown. Pa. KEIM, Laurence A. (G) 134 Cochran Rd., Pittsburgh 2S, Pa. (Pittsburgh Plate Glass Co.) KEITH, Miss L. C. Canadian Ceramic Society 49 Turner Rd. Toronto 10. Ont.. Canada KEITH. Wendeil P. (RI> 1234 E . Marvista St.. Whittier. Calif. (W . P. Keith Co.) f.LER. Francis Pfungen. Switzerland (Keiler 3t Cie. A.G.) K ELLER . George W . (G ) Owens-Illinois 1700 N. Westwood Ave., Toledo 7, Ohio KELLY. Austin J. (E) Gueiph Stove Co.. Ltd.. York Rd. Gueiph. Ont.. Canada KELLY, Ccorge D. S'; 1100 Dublin Rd.. Columbus 12, Ohio (Batteile Memorial Institute) KELLY. Hal J. (R) 602S S2nd N. E.. Seattle S. Wash. (U . S. Bureau of Mines) KELLY. John V. (R) K aiser Sceel Corp. Box 217, Fontana. Calif. KELLY, Joseph F. (R) 301 Braddock Ave., Lansdowne. Pa. (Naval Boiler & Turbine Lab.) KELLY, William J. fW l) Box 265, Hondo. Texas (Umversal-Rundle Corp.) KELSEY. V. V. (M F) Dominion Minerals Div,, Riverton Lime 6t Stone Co,, tnc. Piney River, Va. KELTON, Stanton C . Jr. (G) Rohm & Haas Co., Bristol, Pa. KEMP. John A.. Jr. (W ) 1414-A Hickory Ave., Torrance, Calif. (American-Standard) KEM PF, William C. (R l) 28 Homer PI.. Metuchen, N. J. (Carborundum Co.) -E N A G Y , Lloyd N. (RJ) Claysburg. Pa. (General Refractories Co.) KENAGY, William L. (RFI) 770 Fetters M1U Rd. Huntingdon Valley, Pa. (Simonds Abrasive Co.) KENDALL. Thomas A. (SI L'niversity of Kentucky College of Eng.. Lexington, Ky KENDRICK. Thomas B. (G) Lancaster Lens Co. 220-226 W. Main St., Lancaster. Ohio KENNEDY. Richard W. (W ) Star Porcelain Co. Pa. Box 1329, Trenton 7. N. J. KENT, Joseph P. (W I) 247 Starr St.. Brooklyn 37. N. Y. (Levitn Mfg. Co., inc.) KENT. N. Johnson (Rl) Johns-Manville Sales Corp 22 E. 40th St.. New York 16, N. Y KENT, William B. (MI) 115 W. Main St., Apt. 4 Alliance, Ohio (Kentucky-Tennessee Clay Co.. Inc.) KENTUCKY CLAY MINING CO (W. J. Watkins) Mayfield. Kv KENTUCKY-TENNESSEE CLAY CO.. INC. (Chester Gulick) Mayfield, Ky. KENWORTHY. Orville O. (3) I486 Arthur Ave.. Lakewood 7, Ohio (Ferro Corp.) KENYON. Clark (W ) Frenchtown Porcelain Co. Frenchtown. N. J. KEPXA. George M. (MI) Braun Corp., .1363 S. Bonnie Beach PI. Los Angeies 54, Calif. KEPLINGER. Robert B. (RFI) Carroll Clay Co. Box 56. Carrollton, Ohio KERINS. M. P., Jr. (E) Stauffer Chemical Co. 380 Madison Ave., New York, N. Y. KERLA, Hans (R) 525 Beaumont Ave., Baltimore 12, Md. (Kerloid Corp.) KERPER. Matthew J. (31) National Bureau of Standards Div. .2, Washington 25. D. C. KERR. Charles H. (GF) 2361 Chatsworth Blvd. San Diego 6. Calif KERR. John M. 223 X. Purdue. Apt. 109 Oak Ridge. Tcnn. KERR. W. Raymond (RFI) Armstrong Cork Cn. Box 441, Beaver Falls. Pa. KERSKNER. William G. (W I) 117 S. 14th St.. Olean. X. Y. (Olean Tile Co.) KESKI. James R. 8610 44th Ave.. S.. Seattle 18. Wash. KESSEL. David J. 902 W. Green, Urbana. III. RESTER. Ralph G. (G) 1394 June Dr.. Maumee. Ohio (Kimble Glass Div., Owens-Illinois) KIBLES. H. W. (W ) Southern Potteries. Ine. Box 279, Erwin, Tenn. KIEHL. Harry R. (G) 223 Chemung St.. Corning, N. Y. (Corning Glass Works) KIESOW, Paul F. (G) Forest Hills Dr., Elmirs. N. Y. (Westinghouse Electric Corp.) KILCOYNE. John R. (W) Canadian Porcelain Co. Ltd. Box 42g, Hamilton, One.. Canada KILGORE CERAMICS CORP. (D. H. Wallcup) Box 1619 Kilgore. Texas KILLMAR, Henry M. (R l) Carborundum Co., Box 268 Perth Amboy, N. J. KIM. Bong Kee University of Kentucky Box 5554. Lexington, Ky. KIM, Kee Hyong Box 4406, Virginia Tech. Station Blacksburg, Va. v o l . ar>, n o . io (lo s ) KIM, You S. North Carolina State College Box 3540. Raleigh. N. C. KIMBLE GLASS CO. (K. R. 3 u c k ) 1700 N. Westwood Ave.. Toledo. Ohio KING. Burnham \V . Jr. (E FI) 2224 Lane Rd.. Columbus '.4, Ohio (Batteile .Memorial Institute) KING. Charles B. (G) 189 Cedar 5:.. Coming, N. Y. (Coming Glass Works) KING. K a rr/ M. (M J) a39 Wash-.r.g-.cn ?!., Sycamore. 111. (Corps of E.-.gir.eers, U. 5. Army) KING. R. M. (E F I) Lord Kail, Ohio State Univ. Columbus 10, Ohio KING, Robert G. (W ) 143 N. Center St.. Grove City. Pa. (Vitro Mfg. Co.) KING. Roben M. SO" S. Victor, Champaign. III. KING. Walter F. (M) 365 Arboriea Ave., Morrisville. Pa (Shenandoah Silica Co., tnc.) KJNGERY. W. D. (B) Ceramics Div., Majs. Inst, of Tech Cambridge. Mass. K [X3 MAN. Bradley Q. (GJI) 120 W. Water St., Painted Post, N. Y. (Coming Glass Works) K1RCHER. Paul J. (G) Maryland Glass Corp. 2147 Wicomico St.. Baltimore 30. Md. K1RCHER, Wolfgang (22b) Eisenfcerg/Pfalz Ticfenthalerstr 16, Germany (Messr. Didier--Werke A.G.) KIRCHNER. Henry P.. Jr. (B) Coming Glass Works. Coming. N Y KIRKENDALE. G. a . (I) c/o American Embassy Tel-Aviv. (Mail Room) Dept, oi State Washington 25. D. C. KIRKPATRICK. Frank (W FI) 840 Strand, K ernoja Beach. Calif. (Gladding. Mc3ean & Co.) KIRKPATRICK. Harry 2. iE) National 3ureau cf Standards Div. ?.a, Washington 25. D. C. KLANE. Frank (G1 Corning Glass Works. Corning. N. Y KLAUS. Irving (W ) 137 Winthrcp Rd., Washington Park Nixon. N. J. (Permacent Products. Inc.) KLAUS. So) C.. Jr. (W) 50 S. Munn Ave.. Apt. 804 East Orange. N. J. (Automatic Mfg. Corp.) KLEEMAN. Lee A. (R) 3310 Briariien. A pt. 3 Houston 27, Texas (Harbison-Walker Refractories Co.) KLEIN. Jonathan D. Massachusetts Institute of Technology Rm. 4-051, Cambridge.39* Mass, KLEINHANS. C. J. (E) Porcelain Metals Corp. 1400 S. 13th St.. Louisville 10. Ky. KLEKOTKA. Joseph F. (G) 3601 Reed St.. Philadelphia 46, Pa (Philadelphia Naval Base) KLEVENS. H. B. (G) Mellon Institute University of Pittsburgh Pittsburgh 13, Pa. KLEYMEYES. Clifford A. (S) Standard Brick & Tile Corp. 123 N. W. Fourth St. Evansville 8, Ind. KLIMAN, Morton I. 6 Sutton S t, Mattapan 26, Mass KLINDER. Thomas W. Box 827, Alfred. N. Y. KLINE. Hugh L. (R) Corhart Refractories Co., Inc. 1600 W. Lee St.. Louisville 10, Ky Roster 57 K LIN EFELTER . T. A. (R FI] 2116 " F" S:.. N. \V. Washington 7. D C. KLINGSBERC. Cyrus 503 Linden Rd., State College, Pa. K L IPPER . Joseph i MI Clipper Diamond Toot Co.. Inc. t 34S Hudson St.. New York 14, N`. .LOCKE, Edward J. (M) H. C. Spinks Clay Co., Inc. 1000 First National Bank Bldg Cincinnati 2, Ohio KLOCX NERrHerm an Richard (E l L'niversai-Rundle Corp. W. Keith McAfee Lab., Box 1268 Mahoningiown, Pa. KNAPP. Robert C. (W) 5A Virginia Ave.. N. W. Glen Surnie, Md. (Insulator Dept., General Electric Co.) KNAPP. Thomas E. (W) 120 Mission Meade Rd., New Castle. Pa. (Shenango China, Inc.) K N A PP. William J. (BI) University of California Dept, of Engineering Los Angeles 24, Calif. K N A U F7. Roben W. IR) Charles Taylor Sons Co. Box SS, Annex Station Cincinnati 14. Ohio KN ECH T. Albert O. (W I) 201 Edgewood Ave.. New Castle, Pa (U ni versal-Bundle Corp.) KN IGHT. E. H. (S) Maurice A. Knight Sons Co. Box 150. Crooksviile. Ohio KN IGHT. M. A.. Jr. (S) Maurice A. Knight, "Knight-W are" Box 111, Akron 9. Ohio K N IG H T . MAURICE A., " X N IG H T-W A R E" (M. A. Knight. Jr.) Box 111, .Akron 9, Ohio -'N IG H T . Meilen A. (G) Minnesota Mining & Mfg. Co. 2201 Hudson Rd., St. Paul 6. Minn. KNIGHTON, Heywood J. (C) 334 Trombley Rd. Grosse Pointe Park 20. Mich. (Ford Motor Co.) KN ISELY . Robert C. (G) 2907 Letcnworth Pky., Toledo 6, Ohio (Kimble Giasa Co.) K N I2S X . Jan Otto (R) Apartado 2739. Mexico. D. F. Mexico (Compaa Mexicana de Tubos de Albanal. S. A.) KNOBLAUGH. Walter C. (RI) Box 271, R.R. 3. Tiffin, Ohio (Basic. Inc.) K N O W LE S. ED W IN M.. CHINA CO. (W . D. Packman) Newell. W. Va. KN OW LES. Philip S. (S) 441 E. B uford Rd.. M acon, Ga. ( Elgin-Butler Brick Co.) KN OW LES. William V. (E F ) 8905 Champlain Ave. Niagara Fails. X. Y. KN OW LTON. Samuel H. (W ) 610 New Center Bldg.. Detroit 2. Mich. (Aluminum Co. of America) KNOX. James J. (G) 5 Meinzer St., Avenel. N. J. (Knox Laboratories, Inc.) KN UDSEN . Friedrich P. (BI) 4912 Crescent St., Washington 16, D. C. (National Bureau of Standards) K N UDSEN . Rolf Borgestad. P. A., Norway (Borgestad Fabrikker) K N U TSEN , Eivind (R> W estern Refractories Co. Box 169. lone. Calif. DCH. Daniel O. (M) E. I. du Pont de Nemours Jt Co.. Inc. Electrochemicals Dept. 71 Buckingham Ave. Perth Amboy, N. J. Vol. :!'), No. 10 (10.10) KOCH, Frank A. (M ) National Sales Corp. 107 E. Fourth St.. Cincinnati 2, Ohio KOCH, Renato Dircttorc Stabilimento Tubi Elettronici Marconi Italians S.p.A. Via Pile. L'Aquiia. Itaiy KOCH, William J. (W I) A. C. F. Electronics 1336 N. Henry St., Alexandria, Va. KOCHANEK. Michel (R) 4141 153ru St., S. E.. Bellevue. Wash. (Gladding, McBean & Co.) KOEHLER. W. A. (R D Mineral Industries Bldg. West Virginia University Morgantown, W. Va. KOENIG. Charles Jacob (W FI) Engr. Expt. S u .. Ohio State University Columbus 10, Ohio KOENIG. E. W. (M) Consolidated Feldspar Dept. International Minerals It Chemical Corp. 20 N. Wacker Dr.. Chicago 6. III. KOENIG, John H. (W F I) Rutgers University School of Ceramics New Brunswick. N. J. KOENIG, L. C. (X) Lindberg Engineering Co. 2450 W. Hubbard St.. Chicago 12. 111. KOHL, Hans Leerbachstr, 117 Frankfurt A. M.. Germany (Degussa) K O H LER . Anthony M. (R ) 400 Atlantic Ave.. Springlakc. N. J. (Consultant) K O H L ER CO. (G. P. Gavin) Kohler, Wise. KOHN, Joseph (W ) Universal Dental Co. 48th & Brown Sts.. Philadelphia 39, ?a. KOHNE, Frank H. (W ) 1700 Third Ave.. New Brighton, Pa. (Ceramic Coior 5c Cncmicai Mfg. Co.) KOHNKEN. Donaid H. Box 437, Valley Rd., Paterson 2, N. J. KOMAC. Thomas N. (R ) Republic Steel Corp. 6100 Truscon Ave., Cleveland 25, Ohio KONOFICKY'. Kamiilo Forschungsinstitut der Feuerfest-Industrie Hcimholtastr. 27. Bonn, Germany KONOWITCH. Gilbert D. 2010 N. 74th Ave. Elmwood Park 35. 111. KONRAD. Howard E. (R) 4 t B rookside A ve.. A pt. 7-3 Somerville. N. J. (Johns-Manville Corp.) KOOIJ, K. Chamotte Unie N.V. 7, Tielerweg Geldermaisen, Holland KOOS. E. K. (W I) Sterling China Co. East Liverpool. Ohio KOPP GLASS. IN C (. E. Leberknigbt) Box 3255 Pittsburgh 18. Pa. KO PPERS CO... I N C (Frank L. Jones) Box 128. Verona, Pa. KORA. Yosio 2 Chme. Katsuyama-Cho Yahata. Fukuoka. Japan (Kurosaki Fire Brick Mfg. Co. Ltd.) KOSCHNY. Arthur American Ceramic Society, Inc. 4055 N. High St., Columbus 14, Ohio KOSHUBA. Walter J. (BI) 424 HHlcreat Dr., Wyoming IS. Ohio (General Electric Co.) KOWAL. Leo B. (G) Canadian Pittsburgh Industries. Ltd. 300 Blvd. St. Croix Ville St. Laurent, Que., Canada KOWALKA. Warren R. (G) Libbey-Ower.s-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio KRAFT, C. W. (S) Kraftiic Co.. Niles, Calif. KRAFT, Donald E. Co. A. 185th Signal 3n. Camp Polk, La. KRAFT. Maurice M. (E) K rai: Chemical Co. 917 W ISth St.. Chicago. 111. KRAFT. Ralph G. (R) 102 W. Chateau Place Milwaukee 17, Wise. (Allen-Bradley Co.) KRA FTILE CO. (C. W. Kraft) XUes, Calif. KRAMER. William Meigs (G1 Adamston Flat Glass Div., Rolland Glass Co. Box 631, Clarksburg, W. Va. KRANER, Hobart M. i.BFI) Bethlehem Steel Co. Bethlehem, Fa. KREGER. John M. (R) Valentine Fire Brick Co. Div. A. P. Green Fire Brick Co. Woodbridge. X. J. KREHBIEL, Frederick H. (W ) Pyroccr.es Inc., Pataskala, Ohio KREHBIEL, H. Orton (R) Pvrocoe.es Inc.. Pataskala, Ohio KREIDL. E. L. (B) A. D. Little, Inc. 30 Memorial Dr., Cambridge, Mass. KREIDL. Norbert J. (GF) 40 Milford Rd., Rochester 10, N. Y. (Bausch Si Lomo Optical Co.) KRETSCKMAR. Ernest (GY Electro-Phos Slag Co. 101 S. Meramec Ave.. Clavton 5. Mo. KREUER. Albert L. (M) Orcirection, Inc.. 7425 Thomas St. Pittsburgh 3, Pa. KR1EGEL. W. Wurth (X Fi) North Carolina State College Ceramic Engineering Div. Raieigh, N. C. KRIGER. Frederick S. (G) 148 E. Second St.. Corning. N. Y. ( Coming Glass Works) KRILL. Karl E. (B) Ohio State Univ., Res. Foundation Columbus 10, Ohio KROCHMAL, Jerome Jay (RJ) 4240 Brenau Ave.. Dayton 9. Ohio <V S. .Air Force. Project Engineer) KROECK. William H. (G) Coming Glass Works Box 544. Coming. N. Y. KROGSTIE. Lars Bernhard Fredrikstad. Norway (Norsk Teknisk Porselenfabrikk) KRONMAN. Samuel J. (W I) Carteret China Co. High St,, Carteret. N. J. KRULL. Alan R. (B) ' " Technological Institute Library Northwestern University Evanston. III. KRUMW IEDE. John F. 406 E. Springfield Ave. Champaign. 111. KRUSON, Joseph H. (R) Box 358, Frostburg, Md. (Mexico Refractories Co.) KRYWULT. Edward Z. (W ) 171 St. Joseph Ave. Long Beach 3, Calif. (Huntington Tile. Inc.) KUECHLER. Adolph (W I) 169 Congress Ave.. Providence 7. R. I. (American Emery Wheel Works) KULCSAR. Frank (B) Clevite Research Center 540 E. 105th St.. Cleveland 8. Ohio KUMIXS. Charles A. (B) Interchemieal Corp. 432 W. 45th St., New York 36, N. Y". R oster 59 KUNDLEK, Hanns H. IM) Arnhold Ceramics, 'ne. One E. S7lh S:., New York 22. N. Y. KL'NZMAN, Edward E. (M l) Ferro Corp., >150 E. S6th S:. Cieveland 5. Oh:o "'R K JIA N . Charies R (G) , Massachusetts Institute of Technology Rai. a-OjO. Cambridge 39, Mass. KURTZ. Peter, Jr. 827 Second 5t.. Apt. B. Santa Monica. Calii. KUSHNER, 3urton A. 3ox 2188. Georgia Tech.. Atlanta, Ga. KYANITE MINING CORP. (Gene Dixon) Cullen. Va. KYI. Maung Yu Box 216, Alfred, N. Y. KYOKWAI, Yogyo Ceramic Assn, or Japan 7. Shiba-Nishikubo-Sakuragawacho Minato-ku. Tokyo, Japan KYONKA. Joseph C. (W I) 203 12th Ave. N.. Hopkins. Minn. (Ceramic Arts Studio) L LABANSAT. M. Jacques Socit Professionnelle Des Produits Franais De Terre Cuite 23. rue de Cronstadt. parts XV, France LABORATORIO QUIMICO NACIONAL (Jorge Ancizar-Sordo) Ministerio de Minas y Petroleos Apartado 2577, Bogota, Colombia LACHMAN. Irwin M. (W Jl) W.A.D.C.. Area B. Box 8903 W right-Patterson AFB. Ohio LACLEDE-CHRISTY CO. DIV . H. X. PO R T E R CO. (W . L. Faiiianic) 4705 Ridgewood Ave. St. Louis. Mo. L.'.CCNICH. Sixto Codofredo Poreelana Americana S. A. San Julian y Andes Lom as de Zam ora. 7 C.N.G.R. Argentina I.ADOO. Raymond 3. (M) *2 Huntington Rd.. Newton 53. Mass. (Consulting Engineer' IjF O R G E . Louis H.. Jr. jW ) 764 M arion A ve.. Palo Alto. Caiif. (Consulting Engineer) LAHTI. Lesiie E. (GJ) 1101 H N*, naton St.. Albion. Mich. (Coming Glass Works) LAIDLER, Dougias S. 8-. Vicarage Ln. Kings Langley, Herts, England (Associated Lead M anufacturers Ltd.) LAIRD. Charles (S I) Box -162. Holly Springs. Miss. (Holly Springs Brick 3c Tile Co.. Inc.) LAIRD. Robert K. (E) 0507 Blue 3ird Ave., Louisville 13, Ky. (American Radiator 3c Standard Sanitary Corp.. Plumbing Div.) LaMAIRE. Robert V. (R I) Sawmill Rd.. W arren Tp. Plainfield. N. J. (International Nickel Co.. Inc.) LAMAR. George B. (M ) Interchemical Corp., Albion Kaolin Div. Hcphzibah. Ga. LAMB. Hal (M) Braun Corp.. 1363 S. Bonnie Beach PI. Los Angeles 54, Calif. I.AMBE. C. M. (MFD United S tes Gypsum Co. 300 W. Adams St., Chicago 6. 111. \M B E R T, Joseph M. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13. Pa. LAMBERTSON. Wingate A. (B tl Carborundum Co., Research Lab. Niagara Falls. M. Y. V o l . 3 5 , Mo. 1 0 (1 0 ) LAMB IE. J. M. (R) Findlay Clay Products Co. Washington, Pa. LA N D B A CK , Charles R. (R ) Carborundum Co., Refractories Div. Perth Amboy. N. J. L A N D IS . Benjam in M. 131 Sixth St., Scotia, N. Y. LANE. George J. (W ) Edgar Plastic Kaolin Co. Edgar. Fla. LANE. Richard O. (RI) Macklin Co.. 2917 Wildwood Ave. Jackson. Mich. LANG. Richard L. (G) Ohio Fuel Gas Co. 17 N. Fourth St., Zanesville, Ohio LANG, Samuel G. (E) Hartwood Glass 4 Metals Co. Box 365, Martinsburg, W. Va. LANG. S. M. (W ) 9718 Braddock Rd.t Oakview Silver Spring, Md. (National Bureau of Standards) LANGE. James M. (R) Bethlehem Steel Co., Bethlehem, Pa. LANGE, Louis A. (M) Industrial Heat Control Products 641 Hawthorne Ave. South Milwaukee, Wise. LANGROD. Kasimir (W ) 462 Locust Terr. West Hempstead, N. Y. (Sylvania Electric Products Co.) LANGSTON, Robert B. University of California Hearst Mining Bldg., Rm. 164 Berkeley 4, Calif. LANIER. William S. (R) Babcock 8t Wilcox Co. Old Savannah Rd., Augusta, Ga. I.ANNES. Eugene M. (X I) 1695 N. Union St., Fostoria, Ohio (Hoeganaes Sponge Iron! I.APENNA, Sabino Av. Las Palmas 2). Quinta Evelyn Boietta. Edo Miranda. Venezuela LAPP. Grover W. (MF) Lapp Engineering Co. 68 W. Main St.. Le Roy. N. Y. LAPP INSULATOR CO- INC. (K. E. Stettinius) Le Roy, N. Y. LARISCH. Herbert W. (EJ) 46 Fairview Ave.. Valley Stream. N. V. (Fairchild Engine Div.) LARKIN. Paul G. (S) 2S0 N. Harrison St., Campbell. Calif. (Consultant) LaROCCA, Frank J. (R) Colorado Fuel & Iron Corp. Box 316. Pueblo. Colo. LARSEN. Marie A /S Bing & Grondahl Vesterbrogade, 149 Copenhagen, Denmark LARSON, Edward A. (S) Larson Clay Pipe Co. 9980 Van Dvke Ave.. Detroit 34, Mich. LARSON. Paul F. (S) 3866 Norman Ave., N. W. Canton 9. Ohio (Sparta Ceramic Corp.) LARSON. Thomas L. (R J) Babcock 3c Wilcox Co. 161 E. 42nd S t- New York 17. N. Y. I.ASEMAN. Malcolm E. (S) SI S. Fenton S t- Denver 14, Colo. (Robinson Brick it Tile Co.) LASKY, Elliott Box 847. Alfred. N. Y. LATCHFORD-MARBLE GLASS CO. ( C L. Dillon) Box 71707 Los Angeles I. Caiif. LATIMER. Glen H. (R) 2613 Dogwood Ln.. East Norriton Tp. Norristown. Pa. (E. J. Lavino 4 Co.) LATIMER. Horace L. (E l) 348 Questend Ave. Mount Lebanon. Pittsburgh 34, Pa. (O. Hommei Co.) LATIMER. Trent W. Ohio State University, Baker Hall Columbus `.0, Ohio LATTIN. Judson M. (R) 14644 S. Etibrooke Ave.. Dolton. Ill (International Harvester Co ) LAUCKNER. Julian H. J 27 A Stadium Terrace Champaign. 111. LAUGHLIN. HOM ER. CHINA CO. (J. M. Weils) Newell. W. Va. LAURIE. DOMINIC (RI) Titanium Alloy Mfg. Div,, Natfonai Lead Co. Niagara Falls. N. Y. LAWLESS. Emmett A - Jr. (S) Alton Brick Co.. Box 394. Alton. Ill LAWRENCE. Howard O. (W ) Industrial Ceramics Ltd. Cooksvle. Ont.. Canada LAWRENCE. Ralph V. (R I) 926 Kenneth Rd- Glendale 2, Calif. (Gladding, McBean 4 Co.) LAWRENCE. Waiter F., Jr. (W I) 153 Morniagside Rd., Verona. N. J. (RCA Victor) LAWRENCE. Willis G. (3 ) State University of New York. College of Ceramics. Alfred, N. Y. LAWSON. Louis. Jr. (W ) West Virginia Pulp & Paper Co. Development Dept- Charleston, S. C. LAWSON. W. 3 ranch (W ) 647 N. Elm St.. Erwin. Tenn. (Lawson Fcidspar 3c Minerals) LAXTON. Wilbur (C) Hazel-Atlas Glass Co.. 126 Market St. Zanesville. Ohio LAYNE. Frest -V (W ) Louth.nn Mfg. Co. East Liverpool. Ohio LAYTON. Donald R. (Gl) Brockwav Glass Co., Brockway, Fa. LAZARKIS. Prier J. fW ) 37 Filth Ave.. Watertown. Mass. (Rayhenn Manufacturing Co.) LEAD INDUSTRIES ASSOCIATION (Robert L. Ziegfeldl 60 E. 42nd St. New York 7. X. Y. LEAKE. Fred. Jr. (M) Evans Lead Corp., Box 1467 Charleston 35. W. Va. LEANDER. Karl Johan Langgat. 19. Hoganas. Sweden (Hoganas-Billesholms AB) LEAVER. Stanley (R) 1202 Niagara S t- Niagara Falls. N. Y. (Carborundum Co.) LE BELL. Rolf Casimir Pargas Kaikbergs Aktiebolag ABO Kakelfabrik Slottagatan 52. ABO, Finland t.EBERKNIGHT. C. E. (GF) Kopp Glass. Inc. Box 32S5. Pittsburgh 18, Pa. LzBLANC. John R. Box 16. Alfred Sta.. Alfred. N. Y. LEDDY. Robert M. (SI) Box 128. Hammonton, N. J. (Alliance Clay Product Co.) LEE CLAY PRODUCTS CO - IN C (Martin S. Bowne) Clearfield. Ky. LEE. Don W. 20 Westgate. Cambridge 39, Mass. LEE. Harley C. (RF) Basie, Inc- 345 Hanna Bldg. Cleveland IS. Ohio LEE. James A. (S) Southern Brick 3t Tile Mfrs. Assn 1328 Candler Bldg., Atlanta 3. Ga LEE. P. William (BI) 205 Elmwood Blvd., York. Pa. ( D e n t i s t 's S u p p ly C o. o f N ew Y o rk I R oster 63 EECH, L C. H. &. 0. Th>une. Lid. Victoria Tile Works Holraer, Hereford, England EEDS. Donald H. i.RJH 2025 Westfield Terr., Bethlehem. Pa. th'.ehem Steci Co.) I Kreh A. (R) . .1 Avon Dr., Pittsburgh 16. Pa (Carborundum Co.) .EFFGRGc. j. W. (3) Monsanto Chemical Co. Everett Station. Boston 49. M us .EFORT, Henry G.. Jr. (I) 411 Fairlawn Dr.( Urbana. 111. .2 HERON, Harold Etablissements Porcher Usines de Revin, Ardennes, France -EIBIG, Edward C. (R) Coming Glass Works, Corning, N. Y. LSIBSOX, J. S. (W I) Insulator Dept., Genera! Electric Co. S- Charles & Cromwell Sts. Baltimore 3, Md. LEXPOLD. Martin H.. Jr. 95 E. I2th Ave., Columbus 10. Ohio LEISER. Craig F. 8344 30th N. W., Seattle 7. Wash. LEISEY. William B. (S) 613 Elra Ave., Muhlenberg Park Reading, Pa. (Manu*Mine Research & Development Co.) LEITTEN, Cari F. (R) 50 Hawkins Ave., Hamburg. N. Y. (Electro Refractories & Abrasives Corp-) LELAND. John A. (E) 469 Arbram ar Ave. Pacific Palisades, Calif. (Douglas Aircraft Co.) LEMMERMAN. Paul C. (R) E. I. du Pont de Nemours & Co., Inc. Grass rils Chemicals Dept, fationai City Bank Bldg. leveiand 14. Ohio LsM UNYON. James S. (E) Tappan Stove Co.. 250 Wayne 5t. Mar.sneJd. Ohio LENCRNER. Theodore (DF) 5153 Beeler St.. Pittsburgh 17. Pa. (Vitro Manufacturing Co.) LENNON. A. G. (W) Canadian Potteries Ltd. 360 31vd. du Sminaire St. Johns, Que.. Canada LENNON. John W. (W I) Battelle Memorial Institute 505 King Ave., Columbus, Ohio LENTZ. Clarence J. (R) Quebec Iron 6c Titanium Corp Box 40, Sorel. Que., Canada LEONARD. Jean (M) 96-24 Corona Ave.. Corona 68, X. Y. (Jean Leonard Ceramics) LEOPOLD. Jean H. Leopold & C:e. __ Paffermer?en, (Bas-Rin), France LEO-WOLF, A. L. (M) Carborundum Co., Globar Div. Niagara Fails. N. Y. L EPP. Jack M. (S) 1357 Nicholas PL, Ashland, Ky. (Carlyle Tile Co.) LESAR, Albert R. (RI) 509 Woodlawn, Mexico, Mo. (A. P. Green Fire Brick Co.) LESLIE, Ernest R. (W) Beil Telephone Labs. Murray Hill. N. J. TESSO. Harold F. (R) 631 Beechmont Dr. Dearborn Hills, Mich. (Great Lakes Steel Corp.) LESTER. Frank P. (W) 75 Mercer Ave., Hartsdale, N. Y. (Consulting Engineer) Vol. 35. No. 10 (1956) LESTER. Ronald H. (WJ I ) 3811 Garrison 31vd., Baltimore 15, Md. (General Electric Co.) LESTER, W. Ronald (GF) Liberty Glass Co. Sapulpa, OMa. LESZL, Matthias "Sraalteria e Metallurgies Vcncta" Bassano del Grappa. Italy LETORT, Marc Yves Centre National d'Etudcs e: Recherches Ceramiqucs 3 Avenue Paul Doumer Paris 16, France LETTER. Eugene C. (BJ) Bausch & Lomb Optical Co. Dept. G*62, 5C-5, Rochester, N. Y. LEVENGOOD, William C. (G) 4473--289th St., Toledo, Ohio (Libbey-0wens-Ford Glass Co.) LEVI, Ormonde S. (G) Verd-A-Ray Corp. 61S Front St., Toledo 5, Ohio LEVIN, Ernest M. (B) National Bureau ot Standards Div. 9.7, Washington 25, D. C. LEVIN, I. (M) L & L Manufacturing Co. 136 Eighth St. Upland. Chester, Pa. LEVINE. Irving L. (W) 113 Comstock Ave., Syracuse 10, N. Y. (General Electric Co.) LEVY. Dorothy (D) 1212 Lincoln Ave.. Highland Park, 111. LEWIS. Albert D. (G) Kimble Glass Co., Vineland, N. J. LEVY. Raymond H. (B) 5501 Lynview Ave., Baltimore 15, Md. (Glenn L. Martin Co.) LEWIS. George L. (B) E. I. du Pont de Nemours & Co.. Inc. Experimental Sta.. Wilmington. Dei. LEWIS. Gordon E. (SI) Glen-Gery Shale Brick Corp. Box 86, Shiliington. ?a. LEWIS, J. H. (G) Blue Ridge Glass Corp. Kingsport, Tenn. LEWIS. J. M. (W) Abingdon Potteries. Inc. 80i N. Main St.. Abingdon, 111. LEWIS. William C. (G* Big Flats. N. Y. (Corning Glass Works) LEWIS. William N. (G) I-T-E Circuit 3reaker Co. 601 E. Erie Ave.. Philadelphia 34, Pa. LIBBEY-OWENS-FORD GLASS CO. (George B. Watkins) 1701 E. Broadway Toledo 5. Ohio LIBERATO RE. Laurence C. (G) Taylor Instrum ent Co. 95 Ames St.. Rochester I, N. Y. LIED ER . Phillip H . (R ) 2600 Dogwood Lane. Norristown. Fa. (E. J. Lavino 4 Co.) LIEDERBACH. William H. (BI) 202 Prospect Are.. Pewaukee. Wise. (Globe-Union Inc.) LIGON. Elmer R. (SI) W. S. Dickey Clay Mfg. Co. Box 402, Pittsburg, Kans. LILLIE, Howard R. (GF) 191 Delevan Ave- Corning. N. Y, (Coming Glass Works) LIM. Eung K. Seoul National University College of Engr., Seoul. Korea LIM. Richard H. Y. Box 1039. Alfred. N. Y. LIM. Yock Lio 9tS Oakland. Ann Arbor, Mich. LIMES. Robert W, (R I) Allegheny Ladlorn Steel Corp. Research Labs., Bracken ridge. Pa. LIN, Francis C. M. (G) Hazel-Atlas Glass Co. Washington. Pa. LINDENTHAL John W. (G.) Ohio State University Engineering Experiment Sta. Columbus 10, Ohio LINDER. Cyril S. (E) 1139 Park Si.. Tarentum, Pa. (Pittsburgh Plaie Glass Co.) LINDQUIST. C. Alan. Jr. (Bl) 123 Grandview Ave., Conneaut, Ohio (Astatic Carp.) LIND ROTH. Sii g A. Svenska Accumulator A3. Jungr.cr Oskarsbamn. Sweden LINDSAY. Carey E. (RI) Niies Fire Brick Co. 165 E. Park Ave., Niles. Ohio LINDSAY. J. Gordon (3) Aluminium Labs. Lid. Arrida. Que., Canada LINKHORN. William H. (\V) 423 S. Western Ave.. Kokomo. Ir.d. (American Radiator 3t Standard Sanitary Corp.) LIXSEXS. Max Selb/ 3ay Gerhard-Hauptmannweg 9, Germany LINTZ. E. H. (W FI) 42 Keiskeil Ave., Wheeling, W. Va. {Wheeling Tile Co.) LIN WOOD, Sidney H. (W) Stacxpoie Carbon Co., Sc. Marys, Pa. LINZ. Arthur (E) 551 Fifth Ave., New York 17, N. Y. (Consultant) LIPMAN, B. David Gen. Del.. Alfred. N. Y. LITEN. Alexander F. Box 532. Salem. Mass. LITH IU M CORP. OF AMERICA, INC. ("Walter M. Fenton) 2560 Rand Tower Minneapolis 2, Minn. LITTLE. John M. (S) 120 5. 2$th Ave., Hattiesburg. Miss. (Hattiesburg Brick Co.) LITTLETON. Joseph C. (G) LZ\ Delevan Ave.. Coming. N. Y. (Corning Glass Works) LITTLETON. J. T. (Honorary. GF) _ Coming Glass Works. Coming, N. Y. LIVINGSTON. Charles Q. (R) Armstrong Cork Co.. Lancaster, Pa. LIVOVTCK. Andrew F. (R) 337 N. Virginia Ave.. Hobart. Ind. (Universal Atias Cement Co.) L <&L MANUFACTURING CO. T. Levin; 136 Eighth St. Upland. Chester, Pa. LLOYD. Katherine (R) Kaiser Aluminum & Chemical Corp. 1924 Broadway, Oakland, Calif. LO, Wing*Cheuk 10 Union St., New Brunswick. N. J. LOBAUGH. Frank E. (RI) 1052 Sherman Ave., Plainfield, N. J. (Universal Atlas Cement Co.) LOCHRIDGE. James F. (E) Ferro Enamel de Mexico, S. A. . 4SO Oriente 171. Mexico H, D. F. LOCKE. Ralph S. (B) Diamond Springs Lime Co. Box 409, Diamond Springs, Calif. LOGAN CLAY PRODUCTS CO. (Barton A. Holl) Box 698 Logan. Ohio LONDEREE. Joseph" W., Jr. (B) 3918 Warner Ave., Louisville. Ky. (Corhart Refractories Co.) LONG, Bernard Glaces de Boussois 22. Boulevard Malesherbes Paris 8, France LONG, George R. (E) Frigidaire Div., General Motors Corp. 300 Taylor St., Dayton 1. Ohio LONG, John V. (G) Solar Aircraft Co. 2200 Pacific Highway San Diego 12, Calif. R oster 65  LONG, Luther L. (G) Owens-Coming Fiberglas Corp. Case Ave.. Newark. Ohio LONG. Robert. Sr. ;E ) American Porceiain Enamel Co. 1232 Keating Ave. Muskegon 36, Mich. pNG. Robert R. (W ) National Tile 4 M/g. Co. 1200 E. 26th St.. Anderson, Ind. LONG. Russell E. (R I) Brush Beryllium Co. 4301 Perkins Ave.. Cleveland 3, Ohio LONGENECKER. Robert J. iM ) 46 James Rd., Bcoomall, Pa. (Foote Mineral Co.) LONGFRITZ, Robert K. (R I) Brighton Bride Co. Box 236. New Brighton, Pa. LONGINO. Ted E. (S) Henderson Clay Products Henderson, Texas LONGWELL, Burton (E) Republic Steel Corp. 1423 Republic Bldg.. Cleveland 1, Ohio LOOMIS. David G. (M) Loomis Engineering & Mfg. Co. 125 S. 14th St.. Newark 7, N. J. LOREY. Frederick D. (GI) 41 Meadow Brook Apt., Coming, N. Y. (Coming Glass Works) LOREY. G. Edwin Dept, et Ceramic Engineering School of Mines 4 Metallurgy Rolla. Mo. LOSCO, Alfred G. (3 ) 27 Paterson Ave., Paterson, N. J. (K carfott Co., Inc.) LOUDEN, R. H. (W I) McGean Chemical Co. Midland Bldg., 101 Prospect Ave. N. W. Cleveland 15, Ohio LOUGHRIDGE. Frederick A. (G) 52 Norwood Ave.. Manchester, Mass. (Sylvania Electric Products, lac.) PU T HAN MANUFACTURING CO. (C. W. Gerster) 2000 Harvey Ave. East Liverpool, Ohio LOVE. L. G. (G) National Lime & Stone Co. First National Bldg.. Findlay, Ohio LOVELAND. Edward W. (G) 04 75th St.. North Bergen, N. J. (Fran-Stef Manufacturing Co.) LOVELL, George H. B. S ilwood Ceramics. Box 152 Bergvlei, Johannesburg, South Africa LOVENBACH, J. Giaceries de Saint Roch S. A. 50, rue du Luxembourg Brussels. Belgium LO V ETTE. Paul V.. Jr. (R) R.R. 1. Painted Post. N. Y. (Coming Glass Works) LOW E. Earl C. (S I) Box 46, Logan. Ohio ( Straitsville Brick Co.) LOW E. Edwin C. (R) 2112 Coholan St. Niagara Falls, Ont.. Canada (Norton Co.) LOW E. George X. (RI) Charles Taylor Sons Co. Heights-Rockefeller Bldg., Rm. 210 Mayfield at Lee, Cleveland 18. Ohio , LOW E. William S. (R) A. P. Green Fire Brick Co. 1018 E. Breckeuridge St., Mexico, Mo. LO W ER. Clarence G. (S) New Bethlehem Tile Co. 311 Lafayette St.. New Bethlehem, Pa. LOW ER. Lloyd C. (S) 227 Washington St. New Bethlehem, Pa. (New Bethlehem Tile Co.) LOW ER. Lloyd, Jr. (SJ) New Bethlehem Tile Co. New 3ethlehem, Pa. Vol. 35. No. 10 (1956) LOWRANCE. R. T. (W I Jackson Tile Manufacturing Co. Box 2006, Jackson, Miss. LUCAS. Joseph M. (W) 1431 Broad 31vd. Cuyahoga Falls, Ohio (U. S. Stoneware Co.) LUCEK. John R. i M J) 51 Bushev Rd., Pittsfield, Mass. (General Electric Co.) LUCIDO. Peter J. 1518 Central, Lafayette, Ind. LUDOWICI, Johann W. Carl Ludowici K.a.A. Co. Jockgrim Rheinpfalz, Wesi-Gcrmanv LUDWIG. David-W. (GI) 107 Penn View Dr.. Monroeville. Pa. (Pittsburgh Plate Glass Co.) LUDWIG, Urban W. (G) 2835 Little York Rd., Dayton 4, Ohio (Univis Lens) LUEDERS, Roland (M) 3241 Bradford Rd. Cleveland Heights 18, Ohio (Ferro Corp.) LUHRS. Milieu E. (G) Libbey-Owens-rord Glass Co. 1701 E. Broadway, Toledo, Ohio LUKS, Daniel W. (W I) Star Porcelain Co. Mutrhcnd Ave., Trenton 9, N. J. LULL. Stanley E. (RI) 83-8 Park Ave., Worcester 5, Mass. (Bay State Abrasive Products Co.) LUNAR, Thomas E. (W I) Globe Union, Inc. 900 E. Keefe, Milwaukee 1. Wise. LUND, H. Howard (S) 44 S. Elmwood Ave.. Palatine, 111. (Armour Research Foundation) LUND. L. Howard (SJ) 168 Austin St.. Carpentersville, III. (Central Commercial Co.) LUND. Melvin S. (W) 426 E. State St., Alliance, Ohio (Coioniai Insulator Co.) LUND. Randolph A. 1717 W. 105th St.. Chicago 43. 111. LUNDE, Marvin 4241 Union 3ay Lr,., Seattle. Wash. LUSHER. Gerald H. (R) Norton Co., 5905 Pacific Blvd. Huntington Park. Calif. LYLE. Aaron X. (GF) 21 Cumberland Rd. West Hartford 7, Conn. (Hartford Empire Co.. Div. Emhart Mfg. Co.) LYMAN. Donald R. Bo* 787. Alfred. N. Y. LYNCH, Eugene D. (W ) University of Illinois Dept, of Ceramic Engineering 204 Ceramics Bldg., Urbana, III. LYNCH, James F. (R) Battclle Memorial Institute 505 King Ave., Columbus 1. Ohio LYNCH. John F. (W) 6319 N. Leavitt. Chicago, III. (Lindberg Engineering Co.) LYNSAVAGE. Walter F. (G) 210 Arnold Ave.. Port Allegany, Pa. (Pittsburgh Coming Corp.) LYON, John B. (S) Acme Brick Co., Denton. Texas LYON. Kenneth C. (GF) 357 E. Washington St.. Dunkirk. Ind. (Ball Brothers Co., Inc.) LYONS. Clifford T. (W ) 9825 Bowman Blvd., Dallas 20, Texas (Trinity Ceramic Supply Co.) LYONS, S. C. (M) Georgia Kaolin Co. Dry Branch, Ga. LYTLE. Jack A. (Bl) 308 E. Green Tree Rd. Milwaukee 17, Wise. (Allen-Bradley Co.) LYTLE. W. O. (G) Pittsburgh Plate Glass Co. Research Lab., Creighton, Pa. LYTTLE, Frobisher T. (W) 1031 Findley Ave., Zanesville, (Mosaic Tile Co.) Ohio Me McADOO, D. ?. (W ) J. M. Huber Corp. ICO park Ave.. New York, N. Y. MeALLISTER. Christopher (GI) Box 381, Clarksburg, W. Va. (Pittsburgh Plate Glass Co.) M cALPINE. Kenneth B. (G) 1201 Union Ave.. Brackenridge, Pa. (Pittsburgh Plate Glass Co.) M cASKlLL. James I. (W ) 311 King St. W. Kingston. Ont.. Canada (Frontenac Floor St Wall Tile Co. Ltd.) llcA U LEY , James W. (G) 2334 Sherwood Rd.. Toledo. Ohio (Libbey-Owens-Ford Glass Co.) McBURNEY. John W. (SF) 1543 N. Falkland Ln. Silver Spring. Md. (Consultant) McBURNEY. William C. (D ) R. R. 5. Easthrook Rd.. New Castle, Pa. (Shenango China. Inc.) McCAIN. Kenneth B. (B) W ilbur B. Driver Co. 1875 McCarter Hwy.. Newark 4, N. J. McCAMMON, James W. (M) Dept, of Mines, Parliament Bldgs. Victoria. B. C , Canada McCa n n , d . m . ( w i ) Akron Porcelain Co., Akron 14, Ohio McCANN. Sidney W. (E l) Pfaudler Co. 1000 West Ave.. Rochester 3, N . Y. McCARTT. Kenneth C. t W ) 1408 Delaware Ave.. New Castle, Pa. ( Universai-Runa.e Coro.) MeCLAVE. James W. (SI) 3ox 508. Toronto. Ohio fPeeriess C ay Corp.) McCl e l l a n d . Roland h . (W i) Giobe-Union Inc.. Centralab Div. 900 E. Keefe Ave.. Milwaukee. Wise. McCLURE. Clifton M. (R J) 2415 Edgewood Ave., Anderson, S. C. McCLURG. John (G) Cglebay Norton 4 Co. 1200 Hanna Bldg. Cleveland 15, Ohio McCOLLOM. Perry C. (R I) American Refractories 4 Crucible Corp.. North Haven, Conn. McCON'AUGKA, Wayne H. (S) ateo Corp.. Box 456 East Canton. Ohio McCo n n e l l , g. f . tw ) Mosaic Tile Co., Zanesville, Ohio MeCORMICX. John M. (GJ. 1827 Richards Rd.. Toledo 7, Ohio MeCORMICK. Stewart W. (RI) Coritart Refractories Co. 1600 W. Lee St., Louisville. Ky. McCOY. Nelson (W ) Nelson McCoy Pottery Co. Roseville. Ohio MeCOY. NELSON. POTTERY CO. (Nelson McCoy) Roseville, Ohio McCREERY. George L. (W ) 393 Highland Ave., Wadsworth. Ohio (Ohio Brass Co.) McCREIGHT. Louis R. (R) General Electric Co. 3198 Chestnut St.. Philadelphia, Pa. McCUNE. Samuel E. (R) United States Steel Corp. Gary Works Res. Lab. 991. Gary, Ind. McDANEL. Donald W. (W ) McDanel Refractory Porcelain Co. 510 Ninth Ave.. Beaver Fails, Pa. Roster 67 McDANEL. Melvin W. (W ) K.R. 2. Esstvale Rd. Beaver Fails, Pa. (McDanel Refractory Porcelain Co.) McDANEL. Sumner \V R.R. 2, Beaver Falls. Pa. McD a n i e l , l . l . <r ; Phelps Dodge Corp. Morer.c: 3rar.ch. Morcnci. Aria. McDERMOTT. Tames J.. Jr. (G) 126 William St.. New York 3S. N. Y. McDo n a l d , c . h . t s i W est Bros. Bricic Co. 6500 Sheriff Rd.. N. E. Washington 27. D. C. McDo n a l d , e . f . <e u Ingram-Ricaarason Mfg. Co. Beaver Falls, Pa. McDo n a l d , Howard A. (R ) 12202 E. 19th Ave.. Spokane 64, Wash. (K aiser Aluminum & Chemical Co.) McDOUGAL. Taine G. (W F I) 1117 South Dr., Flint 3. Mich, and Ha'penny House Somerset 3ridge, Bermuda McDOWALL. Ian C. New Zealand Pottery 3t Ceramic Research Assn., Inc. Private 3ag, Lower H utt, New Zealand McDOWELL. J. Spotts (RF) 4716 Bayard St., Pittsburgh la. Pa. (Harbison-W alker Refractories Co.) McDOW ELL. Samuel J. (B F!) S2 Ekn Ave., Mctuchen, N. J. (American Lava Corp.) McELROY, R. H. (M I) International Clay Machinery Co. 1145 Bolancer Ave.. Dayton 1. Ohio McEVOY, Robert J. (RD 2234 Berdan, Toledo 13. Ohio (Owens-Coming Fibergias Corp.) McFARLAND, James E. (E ) 14025 Greenbay Ave.. Chicago 33, 111. 'Inland Steel Co.) MeCEAN, Ralph L. fE ) Midland Bldg., 101 Prospect Ave., N.W. Cleveland 15. Ohio 1McGean Caemical Co.) McGEE. Thom as D. Iowa State College Ceramic Engineering Dept., Ames. Iowa McGZLL. William M. (B) Virginia Division of Geology 3ox 3667, University Station Charlottesville. Va. McGi n n i s , r . a . (wd American Lava Corp. Cherokee 3!vd. & Mfgrs. Rd. Chattanooga 5, Tenn. McGOHAN, G. William (E ) Armco Steel Corp.. Middletown, Ohio M eCOLPIN. William C. (S) Rm. 403, 57 Bloor St,, W. Toronto 5. Ont,, Canada (N atco Clay Products, Ltd.) MeGRAW. Delford A. (G) 4117 Graceway, Toledo 6, Ohio (Owens-Illinois) McGREGOR. Frederick B. (M) Great Lakes Foundry Sand Co. 720 United Artists Bldg. D etroit 26. Mich. McHOSE. Donald G. (M) Such Clay Co.. Box 47 Perth Amboy. N. J. M cHOSE. M. M.. Jr. (M) Such Clay Co., Box 47 Perth Amboy, N. J. M cIN TO SH . C. M. (W ) Radio Materials Corp. 170S W. Belmont Ave.. Chicago 13. III. M cINTOSH. Harold W. (G) American Window Glass Co. Farm ers Bank Bldg., 20th Floor Pittsburgh 22, Pa. M cIN TO SH . William A. (S) W est Virginia Pulp St Paper Co Polychemicals Div. Charleston. S. C. Vol. 35, No. 10 (1956) McINTYRE. G. H. (E F I) Ferro Corp. 4150 . 56th St., Cleveland 5, Ohio McKAIG. W. Wallace (R) Cumberland Steel Co. Box 23. Cumberland, Md. McKANE. John W. (R) 257 Chesterfield Ave. Glen Ellyn, 111. (Foremost Foundry Supply Co.) McKEAND, Irvin J. (W) Minncapoii&'Honcyweil Regulator Co. Research Center 500 Waahington Ave. S. Hopkins, Minn. McKEE, William D,, Jr. (B) 64 W. Tulane Rd., Columbus 2, Ohio (Battelle Memorial Institute) McKEEX. Richard D. (W I) Box 625, Haverhill, Mass. (Western Electric Co.) McKENDRICX, Alexander Glenooig Union Fire Clay Co.. Ltd. Glenboig. Lanarkshire. Scotland McKEOWN, J. Duncan (R) 3ox 137 Burnet Woods Station Cincinnati 20, Ohio (Carborundum Co.) McKEOWN. Thomas H. (M) Box 31, Mctuchen. N. J. (E . I. du Pont de Nemours & Co., Inc.) McKI3BEN, Burt H. (E) Mallory-Sharon Titanium Corp. Niles, Ohio M eKINNIE, J. R. (R) Ideal Chemical Products, Inc. 3813 Hoke Ave., Culver City, Calif McKINNIS. Chartes L. (GI) Owens-Coming Fiberglas Corp. Glass Res. Lab.. Newark, Ohio McKULLA. George W.. Jr. 4711 I7th N. E.. Seattle 5. Wash. McLACHLAN. Eugene K. (R) 2280 Sunshine. Johnstown. Pa. (Bethlehem Steel Co.) McLAIN FIRE BRICK D IV . H. K. PO RTER CO_ IN C (Lawson E. Mason) Clark Ave., Wellsviile, Ohio McLANE, James P. (M) Diamond Pottery Corp. 50--56 China St.. Crooksville. Ohio McLa r e n . Henry D. (E ) Ferro Enamels (Canada) Ltd. Box 37, Oakville. O nt, Canada McLa r e n , John (M) Box 75. East Liverpool. Ohio (Bell Research Labs.) MeLAUGHLIN, John L. (E) S 64 S . C r a ig P I.. L o m b a rd , 111. (Allied Porcenell Inc.) MeLAUGHLIN, Joseph K. (W I) Hyalyn Porcelain, Inc. Hickory, N. C. MeLAUGHLIN. William H. (R) Alsey Brick 3c Tile Co.. Alsey, III. McMAHON. John F. (XFI) Alfred, N. Y. (State University of New York College of Ceramics, at Alfred Univ.) McMAHON. John F., Jr. (GJ) 645 S. Cannon Ave.. Lansdale, Pa. MeMASTER. Harold A. (G) Permaglass. Inc., Box 195, Sta. A. Toledo 5, Ohio ' McMULLF.N, John C (R) 9325 Rivershore Dr. Niagara Falb, N. Y. (Carborundum Co.) McMURDIE. Howard F. (BF) National Bureau of Standards Washington 25, D. C. McMURTRY, Carl H. (RJI) 72 Maple Ave.. Wellsviile, N. Y. (State University of New York. College of Ceramics) McN a m a r a , e . p . ( W F i) 73 Ritchie Ave.. Cincinnati 15. Ohio (Cambridge Tile Mfg. Co.) McNAMARA, Edward P., Jr. 135 E. Third St.. Coming. N. Y. McNAMARA. Richard B. (R) 17 Lochiar.d Dr.. 3uffalo 3S, N. Y. (Electro Refractories Sc Abrasives Corp.) McXAUGHTON, Ronald R. (B) Central Technical Library Consolidated Mining 3t Smelting Co. oi Canada, Ltd.. Trail. B. C,, Canada McQUARRlE. Malcolm C. (B) 105 E. Nlttany Ave., State College, Pa. (Pennsylvania State University) McRITCHIE. Frank H. (R) Mellon Institute, 4400 Fifth Ave. Pittsburgh, Pa. McRORY, Glenn L. (M) New Jersey Zinc Co. 1007 National City Bank Bldg. Cleveland 14, Ohio McTAGGART. G. Don Coming Glass Works, Corning. N. Y. McVAY. T. N. (BFI) 10 Oakwood Court, Tuscaloosa, Ala. (U . S. Bureau of Mines) McWALTER. H. G. (R) Laclede-Christy Co. Div. H. K. Porter Co. Inc. 2000 Hampton Ave., St. Louis 10. Mo. McW i l l i a m s . Robert j. ( e d Pfaudlcr Co. (Elyria Div.) Taylor St., Elyria, Ohio M M acALPINE. William M. (G) 357 E. Main St., Somerville. N. J. (Johns-Manville Research Laboratory) MacDOXALD. James E. (R) McFceiy Brick Div. General Refractories Co.. Latrobe. Pa. MacDOXALD. Raymond S. (G) Coming Glass Works. Coming. N. Y. MacDOXALD. R. W. (W I) R.R. 11. Box 561. San Anionio. Texas (C onsulting Engineer) MACER. W. E. (M) Carborundum Co.. Globar Div. Niagara Falls. S . Y. MacGIBBON, Richard John G Stein It Co.. Ltd. Manuel Works Nr. Linlithgow, Scotland MACHLAN. G. R. (G) Owens-Coming Fibergias Corp. Newark, Ohio MaeINTYRE. Donald J. (W ) R.R.. Fiffard. N. Y. (Lapp Insulator Co.. Inc.) MACKASEK. Edward (EF) 1723 19th St., N. W , Apt. 702 Washington 9, D. C. (Porcelain Enamel Institute') ' MACKENZIE. James United Steel Companies Ltd. Research Sc Development Dept. Swinden House, Moorgate Rotherham. England MaeKENZIE, James T. (R) 4300 Ninth Coart S. Birmingham 5, Ala. (Southern Research Institute) MACKLIN CO. (Richard O. Lane) 2917 Wildwood Ave., Jackson, Mich. MacLEOD, John United Fireclay Products, Ltd. 140 W. George St. Glasgow, C. 2,, Scotland MacNEIL, S. Ambrose Demcrara Bauxite Co., Ltd. Mackemie, British Guisna MacRAE, John (G) Fibergias Canada Ltd. Bax 309, Guelph, Ont., Canada R oster 69 MAC ZCR.V George <KJl MARCH, Joseph W. (S) 3815 Highland Rd. Nova Scor.a Technical College East S:. Louis, II*. Halifax, N. S., Canada (Alcoa Research Labs.) MARCUS, Leon <BI) MADDEN, Rober: C. (B) 1527 Coventry Rd., Cleveland, Ohio 113 P in S:. (Horizons. Inc.) Saul: Ste. Marie, Ont., Canada MARCYX, Chester A. ( ) (Algoma Steel Corp., Ltd.) 2302 S. Kensington Ave. MADDOCK, A. M. (W ) W cstchcs-.cr. 111. R. R., Washington Crossing, N. J. (Chicago Vitreous Corp.) MADSEN. Leit Egti MARGOLIS. David tR) Box 4208. Saedakervn 109/111 Oslo, Norway 39 Glcnwood Ave.. New Rochelle. N. Y. (Fisb-Schurman Corp.) (A /S Den Xorske Slipeskivctabr.) MARGRAVE, John L. (B) MAGAZINE, Arnold L. (G) University of Wisconsin CBS-Hytron Corp. Dept, of Chemistry, Madison 6, Wise. 100 Endicott St., Danvers, Mass. MARK, Stanley D., Jr. (R) MAGID, H. S. (W I) 1592 Love Rd., Grand Island, N. Y. American Radiator 4 Standard (Carborundum Co.) Sanitary Corp., Box 907 MARLETT. Charles J. (M) Trenton S. N. J. One Lloyd Ave.. Latrobe, Pa. MAGNUSON, V. E. (MJ (Kcnnametal, Inc.) Western Feldspar Milling Co. MARQUIS, John E. (W ) Box 71, Saltda. Colo. Pemco Corp., Res. 4 Dev. Lab. MAGOR. James K. (E ) 2552 Greenmoun: Ave. Cnited States Steel Corp. Baltimore 18. Md. Applied Res. Lab.. Monroeville. Pa. MARSHALL. Darwin (B) MAGUIRE. Edward A.. Jr. Electro Metallurgical Co. 1335 E. Price 5:.. Philadelphia 38, Fa. Metals Research Labs. MAGUIRE. Samuel G., Jr. (B) Box 580, Niagara Falls, X. Y. United Clay Mines Corp. MARSHALL, Paul A. (G) 101 Oakland St., Trenton 6, N. J. 1201 Cherry St., Brockway, Pa. M A RIER, Lois W. (D ) (Broclcway Glass Co., Inc.) *5535 Harding Blvd. MARTIN. Albert E. (M) Baton Rouge 7, La. Almar Specialty Machines Ltd. (Southwestern Louisiana Institute) Maple, Or.t., Canada MAHONEY. Frank B. (E ) Richmond Radiator Co. MARTIN. Francis W. (G) 101 Hornby Dr., Painted Post, N. Y. Box 111, Metuchen, N. J. (Coming Glass Works) MAJESrCE, Joseph (G) T. C. Wheaton Co., Millville, N. J. MARTIN, Frank B. (R) MALCOLM. Richard B. (E) E. J. Lavino 4 Co. O. Homme! Co. Box 29. Norristown, Pa. Box 475, Pittsburgh 30, Pa. MARTIN. H. C. (R) MALM. Arthur T. (R I) Carborundum Co. 333 Beverly Rd., Worcester 5. Mass. Buffalo Ave., Niagara rails, N. Y. (Norton Co.) MARTIN. James X. (M) MALOCTIAN, M arkay H. (3 ) 1063 Helen Ave., Lancaster, Pa. 405 Mobegao Ave.. New London. Conn. (Poser Iron Works, Inc.) (L'.S.N. Underwater Sound Lab.) MARTIN. John R.. Jr. (W) M A LV ER N B R IC K 4 T IL E CO. Monongahela Power Co. (George B. Eyerly) Box 415. Malvern. Ark. MALYSIAK, Chester (C) 1027 Hickory, Perrysburg. (Owens-Illinois) Ohio 920 Charies St.. Weilsburg, W. Va. MARTIN, Leonard A. (W) Martin Ceramic Supply Co. 8901 Rainier Ave., Seattle 3. Wash. MARTIN, Ralph H. (W I) MANDEL. Charles J. (W I) Vernon Kilns W illette Corp. of New Jersey 2310 E. 52nd St., Los Angeles 58. Calif. Codvrise Ave. St Reed St. MARTIN, Wesley G. (EF) N ew Brunsw ick, N . J. MANDLS, Richard M. (G) 6054 N. Kent Ave. Milwaukee 17, Wise. Rare Earths, Inc. Box 488, Pompton Plains, N. J. (A. O. Smith Corp.) MARTINO. Paul D. (SJ) MANN. George H. (G) Lake Salubria, Bath, N. Y. (Corning Giass Works) Cannelton Sewer Pipe Co. Canndton. Ind. MARTINSEN, Rodney E. (M) MANNING. R. Douglas (D ) Timken Roller 3earing Co. H arker Pottery Co. 1835 Dueber Ave.. S. W. E ast Liverpool, Ohio Canton 6. Ohio MANOUSEK. Miloslav MARTZ, Joseph A. (R) Dcinicka 27 P raha VII, Czechoslovakia 535 Riverside Ave., Wellsville, Ohio (McLain Fire Brick Co.. MANRING, Jack C. (E JI) Div. of H . K. Porter Co., Inc.) R.R. 1, South Charleston, Ohio MARTZ. Karl (D) (Westinghouse Electric Corp.) Indiana University Art Center MANRING. William H. (G) Bloomington. Ind. Calumite Co. MARVIN, Charles G. Box 151. Hamilton. Ohio Box 787, Alfred, N. Y. M ANSFIELD SANITARY MARWAHA. Kidar N. POTTERY. INC. (Perry E. Draper) Bore 4 Co.. Ltd. P c rrysville. Ohio MANUFACTURERS EQUIPM ENT CO. Refractory 4 Ceramic Works Box 13, Jabalpur 1, India (J. R. Schroll). 218 Madeira Ave. MARX, Le Roy J. (S) Dayton 4, Ohio Denver Terra Cotta Co. MANZ, Oscar E. (B) 135 Tejon St., Denver 23, Colo. Bax 516. University Station MARYLAND GLASS CORP. Grand Forks. N. D. (L. C. Roche) 2147 Wicomico St. (University of North Dakota) Baltimore 30, Md. Vol. 35, No. 10 (19561 MASX1LL, William Webb Ccrcctt. Ltd. Coaibournhill Giass Works Stourbridge. Worcester, England MASON, Cecil R,, Jr. 379 Courtenay Dr., N. E. Atlanta d. Ga. MASON CITY BP.ICX 4 T IL E CO. i.C. F. Garland! Mason City, Icwa MASON, Frank (W) Colonial Insulator Co. 945 Grant S:,, Akron II. Ohio MASON, Lawson E. (R) McLaia Fire 3rick Div., H. K. Porter Co., Icc. Clark Ave.. Wellsville, Ohio M A SSSNGALE. Gordon B. (R I) 553 Audubon Ave., Pittsburgh 34, ?a. (Harbisoti-Walker Refractories Co.) MASSON. R. ParxeilanrVorik Lartgenthal A. G. Langenthal, Switzerland M ATCHULAT, John G. (R) Buffalo Rd., R.R. 2 East Aurora, N. Y. (Electro Refractories 4 Abrasives Corp.) M ATEJCZYK, John F. (E ) 75C6 Trevanion Ave., Pittsburgh IS, Pa. (O . Homme! Co.) M A TERIA LI P.EFRATTARI SOC. p.AZIONI (J. Charles Mathon) Via Eiia. Lombardini 13 MiJano 744. Italy M A TH EN Y, Richard E. (S) R.R. 7. Box 307, Birmingham. Ala. (Natco Corp.) MATHER, Mrs. Katharine (B) Waterways Experiment Sta. Drawer 2131, Jackson, Miss. M A TH IA SES'. O. E. (S) Federal Seaboard Terra Cotta Ccrp. Box 301, Perth Amboy, N. J. M A TH IESO N . George W. (G) 2253 Castlewood Dr., Toledo 13, Ohio (Kimble Giass Co.) M A TH IESO N . Roolin M. (R) Aluminium Limited Sales, Inc. 630 Fifth Ave.. New York 20. X. Y. M A TH IEU . Leu is A. Parra Mantois. II Chemia de Rcr.de Le Vesinet (S&O) France M ATHON, Charies Material! Refrattari Soc. p-Azioni Via Elia Lombardini 13 Milano 744, Italy M ATHON, J. Charles Material! Refrattari Soc. p.Azioni Via Elia Lombardini 13 Milano 744, Italy M ATSON, Frederick R. (GI) 723 Jackson St., State College, Pa. (Pennsylvania State University) M A TTESO N , Gilbert D. (W ) Engineering Library Scintilla Div., Bendix Aviation Corp. Sidney, N. Y. M A TTISO N, William F.. Jr. (G I) R JL 3, Lawson Dr., Madison. Conn. (Libbey-Owens-Ford Glass Co.) MAU, K. T. (S) Gaspto, Box 2454, Honolulu, Hawaii M A UPIN , Addison (RI) 721 Yale Ave., Terrace Park, Ohio (Charles Taylor S o u Co.) M A U SER, James A. (E) 5519 N. Lake Dr.. Milwaukee 11. Wise. MAURER. Robert D. (G) Corning Glass Works, Coming, N. Y. MAUSER. H. W. Spooningei 68. Delft, Holland (Royal Delftware Manufactory) MAVOR, Wilfrid (E) Ferro Enamels (Canada) Ltd. Oakville, Ont,, Canada MAXSON. Elwyn L. (M) 1208 Isabel St,, Burbank, Calif. R oster 71 MAY. L. F. i R ) Standard Ultramarine i Color Co. Huntington IS. W. Va. -MAYER. Waiter S. (W j Mayer China Co. Box 561. Beaver Falls. Pa. YFIELD. Slanville J. (\VI) 1327 Auburadale Ave. Chattanooga 3, Tena. i American Lava Corp. ) MAYNARD. Fred A. (M ) S45 E. 250th, Euclid, Ohio (Harshaw Chemical Co.) MAYNARD. Frederick H. (G) Corning Glass Works 1 Jackson St., Wcllsboro, Pa. MAYS. George A. (S) Box 68, Niles. Calif. (California Pottery Co.) MEDERT, W arren C. (GI) 5320 Melvin Dr., Toledo 14, Ohio (Owens-Illinois) MEEKA, Edward (S I) Metropolitan 3rick. Inc. Box 27, East Palestine. Ohio MEGLES. John E,, Jr. (G) 7 Washington St.. Box 143 Cokeburg, Pa. (Coming Glass Works) MEID. William J. (M) 203 Elm St.. Glenview, III. (Lindherg Engineering Co.) MEILING. Gerald S. 1123 Lorraine Dr. Salt Lake City, Utah MEINKEN. Robert H. (B) 2? Myrtle Ave. North Plainfield. N. J. ( Bell Telephone Labs.) M EIRESONNE. A rthur C. (G) 700 Village Dr., Columbus 14, Ohio (Kimble Glass Co.) MEJIA. Lorer.io (M) Colombia Brewers Industries. Inc. 30 Broad St.. New York 4, N. Y. ELOY. C. L. (RI) Res. Dept.. Rsa. A406 Bethlehem Steel Co., Bethlehem. Pa. MENG. Edwin R. (R) National Carbon Co. Box 6087. Cleveland 1, Ohio MENGSHOL. Clarence O. (E! American Radiator <4 Standard Sanitary Corp. 1089 Essex St., Richmond, Calif. MENNIE. Alan J. International House Berkeley 4, Calif. MERCER. James W. 3246 Lambeth Circle, Doravillc, Ga. MERCK. Walter J. (R l) 23 Addison Dr., Short Hills, N. J. (M. W. Kellogg Co.) MEREDITH. Edward J. (R) Box 1333. Birmingham 1, Ala. (Universal Atlas Cement Co.) M EREDITH. Nell F. (R I) Box 23IG. R.R. 2, Tiffin, Ohio (Basic. Inc.) M ERIW ETHER, B. Corbin (W ) Deena Products Co.. Arlington, Ky. MERLINI, Ing. Francesco Colonnata. Florence, Italy MERRIAM. Jack G. (R I) 727 N. Wildwood. Mundelein, III. (Titanium Alloy Mfg. Div., National Lead Co.) MERRIMAN, Seth G. (G) 2722 Lincolnshire Blvd.. Toledo 6, Ohio (Owens-Illinois, Kimble Dlv.) MERRITT. Clarence W . (W FI) Box 464. Allred, N. Y. (State University of New York College of Ceramics, at Alfred Univ.) MERRITT, Lester M. (X I) 634 Wilson Ave.. Columbus 5, Ohio (Industrial Commission of Ohio) VOL. 3H, So. 10 (19.56) MERRY, E. B.. Jr.. (SI) Merry Bros. Brick 4 Tile Co. 413 Masonic Bldg.. Augusta. Ga. MERWIN, Byron W. (W ) Parkway Rd.. R. R. 2 East Liverpool. Ohio (Hall China Co > MERZ, Kenneth M. 236 Upson La., New 3rvnswtck, N. J. MESSIMER, Laverne A. t GIl Holophanc Co.. Newark. Ohio METAL 4 THERMIT CORP. (George C. Beta) 100 Park Ave. New York 17, N. Y. METZ. G. F. (M) 816 Cypress Rd,, Veto Beach. Fla. (Consulting Engineer) METZ. Gilbert F,, Jr. 1303 State Si.. Rolla. Mo. METZGER. A. J. (R l) Dept, of Ceramic Engineering Virginia Polytechnic Institute Blacksburg, Va. METZGER. H. C. (M) E. E. Zimmerman Co. 1704 Keenan Bldg.. Pittsburgh 22. Pa. MEULI. 2nd Lt. William ?. W right Air Development Center Area B, Wright-Fatterson A FB. Ohio MEXICO REFRACTORIES CO. (C . A. Sm ith) B etter R eiracio ries Bldg. Mexico, Mo. MEYER. George W. (G) Glensbaw Glass Co.. Inc. Glenshaw. Pa. MEYER. G. Robert (G) 529 N. Imboden St., Apt 302 Alexandria, Va. 1Libbey-Owens-Ford Glass Co.) MEYER. L. S. (S) Hydraulic-Press Brick Co. 705 Olive St.. St. Louis 1. Mo. MEYER. William W. (W ) R. S. 1. Box 632, Anr.andale. Va. (U. S. Tariff Commission) MEYERHOFER, E. A. Meyerhofer 4 Co.. Forehstrasse 2 Zurich 32. Switzerland MEYER-SCHOLER. Hans Carl Spilteierstrasse 1 Liestal. Switzerland (Tomverx Lausen AG) MEYSEL. John J. _ Refracton Ltd. Zurich 2 Genfentrasse. Zurich. Switzerland MICHAEL. Frank L. (E l) 319 Norbourr.e 3'vd., St. Matthews Louisville 7, Ky. (General Electric Co.) MICHAEL. Harold J. (E ) Cia. Industrial d e l N o r te Apan ado 226. Saltillo. Coah., Mexico MICHEL. Howard (E ) Porcelain Enamel. Ine. 80 S. Dover, Denver IS, Colo. MICHEL. S. Etablissements G. Devineau 26, rue Lafayette, Paris 9*. France MICHELOTTI. Joseph E. (E l) 164 E. Essex Ave-, Lansdowne, P a (Vitro Mfg. Corp.) MICHENER. John William (G) Research Laboratory Owens-Coming Fiberglas Corp. Newark, Ohio MICKWITZ. Alexander von (B) 701 Main St.. Latrobe. Pa. (Stupakaff Dlv., Carborundum Co.) MIDDLESWARTH. Earl T. (G) 7 Moody St., Amcsbury, Mass. (CBS-Hytron) MIDDLETON, George J. (M) L. H. Butcher Co. 3628 E. Olympic Blvd. Los Angeles 23. Calif. MIDGETTE, Willard B. (M) Eagle-Pieher Co., Chemical Div. 1301 Oliver Bldg.. Pittsburgh 22, Pa. MIKE, Thomas M 4Q West St.. Hornell. N. Y. M ILAN !. Helio Box 926. Alfred. N. Y. M IL D W O rr. 3er. (G> 3en: Glass Works, Inc. 33-2: 126th St. Richmond Hill 13. N. Y. M ILILLO, Frank A. lE J) 167 Lexington Si. East Boston 23. Mass, i Arthur D. Little. Inc.) M ILLAR. N. S- C. F rit Factory Radiation Group Sales Ltd., Grappenhal Works W arrington. Lancs., England M ILLER, Alan D. 342 E. 83 rd St.. Seattle, Wash. M ILLER. B. L. (W ) Royal Cnina. Inc.. Sebring, Ohio M ILLER. Boyd C. CM) Miller Equipment Co. Box 1S66. Salisbury, N. C. M ILLER. E. R. (W ) Washington Porcelain Co. Willow St., Washington, N. J. M ILLER, Fred W. (R) rrar.kiin Manor, 114 Franklin St. Bldg. 3, Apt. 3-2. Morristown. N. J. (Carborundum Co.) MILLER, Grant E. (E l) Ferro Corp., 4150 E. 36th St. Cleveland 5. Ohio MILLER. Harold (E) 5736 N. Taltnan Ave., Chicago 45. HI. (Ohmite Mfg. Co.) M ILLER. Harold D. (M) 1S9 Circle Dr.. Plandome Manor Long Island. N. Y. (B. F. Drakenfeld 4 Co., Inc.) M ILLER. Henry E. (R) Chicago Wheel 4 Mfg. Co. 1101 W. Monroe St.. Chicago 7, 111. M ILLER. Howard L. (R I) Libbey-Ower.s-rord Glass Co. 3ox 4278. Charleston. W. Va. M ILLER. James L. (R ) 151 Peach St.. Park Forest. 111. (Norton Co.: M ILLER. John B. (M I) Third St., Lewiston. N. Y. fTitanium Alloy Mfg. Div.. National Lead Co.) M ILLER. John W. . W) New Castle Refractories Co. New Castle. ?a. M ILLER. Jorge Smith Casilla 137. CristaJcrias de Chile S. A. Santiago. Chile M ILLER. Marlin. Jr. 1733 S outhw ood A ve., S outh Bend, Ind. M ILLER. Maurice. Jr. (X) 484 E- Beechwold Ave. Columbus 14, Ohio M ILLER. O. E. (R ) Pvro Refractories Co. _ Box 488. Oak Hill, Ohio M ILLER. Ralph E. (G) 365 Glen Ave., Elmira, N. Y. (Coming Glass Works) MILLER. Robert A. (GF) 1211 Carlisle St.. Tarentuo. Pa. (Pittsburgh Plate Glass Co.) M ILLER. Russel A. (W I) 251 E. Rockland St. Philadelphia 20, Pa. (Ftankford Arsenal) MILLER. R. V. (W ) Sovereign Potters Ltd, 232 Sherman Ave. N. Hamilton, Ont., Canada M ILLER. R. W. (G) Columbia-Southern Chemical Corp. One Gateway Center, Pittsburgh 22, Pa. MILLER. Vincent P. (M) Miller Pottery Engineering Co. 2300 Palmer St. Sw issvale, P ittsb u rg h 18, Pa. Roster 73 MILLER. W. D. (G) Owens-Illinois, Box 101? Oakland 4, Calif. MILLER. William A. (R) Carborundum Co.. Falconer, N. Y. MILLER. William A. , 306 . Madison Sc.. Gibsonburg. Ohio i L U C A S , Kenneth L. (R) Aluminum Co. of America 3300 Missouri Ave., East St. Louis, IU. MILLIGAN. Chester E. (R) Electro Refractories 2t Abrasives Corp. 4814 Loma Vista Ave. Los Angeles. Calif. MILLIGAN. Loweil H. (B) Norton Company, One New Bond St. Worcester 6, Mass. MILLIKEN. Edward C. (SI) 444 W. North Ave. East Palestine, Ohio (Natco Corp.) MILLIKEN. Frank H. (S) Bowerston Shale Co.. Bowerston, Ohio MILLIKEN. Joseph E. (SJI) 1308 South Sc., Pottscown, Pa. / Robinson Clay Product Co.) MILLIKEN. William M. Cleveland Museum of Art Cleveland 6, Ohio MILLIKEN. William U. <SJ) Box 23, Bowerston, Ohio MILLMAX, Nathan (M) j. M. Huber Corp.. Huber. Ga. MILLS. G. Alexander (B) Houdry Process Corp., Box 427 Marcus Hook. Pa. MILLS, R. Gerald (B) General Electric Co. Commonwealth Edison Project 2X55 S. First St.. San Jose, Calif. MILTON BRICK CO.. LTD. (D. T. Green) Box 554 Milton. Ont.. Canada MINARD. Richard A. '3 ) 3rookncld Engineering Labs.. Inc. 240 Cushing St.. Stoughton. Mass. MINER. Reginald R. iR) 412 \V. Chestnut Ave.. Metuchen, M. J. ( Carborundum Co.) MINK. John D. (G) R. R. 2. Dunkirk, Ind. fArmstrong Cqrk Co.) MINNICK. L. John (R) 305 Boyer Rd.. Cheltenham. Pa. (G. 3c W. H. Corson) MINSHALL. John 3. (R) Kaiser Aluminum & Chemical Sales. Inc. 3 Gateway Center, Pittsburgh 22, Pa. MINTON. G. 2. (GI) Pittsburgh Plate Glass Co. Research Lab., Creighton. Pa. MISSBACH. George E. (M) Morehouse Industries 707 Henry Grady Bldg., Atlanta, Ga. M ISSISSIPPI GLASS CO. (Charles J. Youngblood, Jr.) 88 Angelica St., St. Louis 7, Mo. MITCHELL, Lane (BFI) School of Ceramic Engineering Georgia Institute of Technology Atlanta, Ga. MITCHELL. Russell G. (M) R. R. 1, Dutch Ridge Rd. Beaver, Pa. (McDanel Refractory Porcelain Co.) MITOFF. Stephan P. (B) General Electric Co., Res. Lab. Metallurgy & Ceramics Dept. Box 1088, Schenectady, N. Y. MITRA. H. K. (I) 12 A Road East Jamshedpur E.R.. India (Tata Iron & Steel Co., Ltd.) MIXER. William G.. Jr. (W ) 315 W. Lima St.. Findlay, Ohio* (Radio Corp. of America) MOCHEL. Mrs. Ellen Lunn (G) Corning Glass Works, Corning, N. Y. Vol. No. to (1050) MOCHEL. John M. (B) MOONEY. Edward L. (W* 97 Hillcrest Dr., Painted Post. S'. Y. General Laboratory Assoc., Inc. (Corning Glass Works. MOCKRIN, Isadore (B) Norwich. N. Y. MOORE. Carleton B. Pcnnsyl%*ania Salt Mrg. Co. 391 S. Wilson Ave.. Pasadena. Calif. Research 3r Development Div. Box 4383 Chestnut Hill P.O. MOORE. Charles H. (3 ) P. R. Mailory 3c Co. Philadelphia 18, Pa. 3029 E. Washington St. MOE3US. C. R. (M) Indianapolis 6. Ind. United Clay Mines Corp.. Trenton. X. T. MOFFAT. John. Jr. (R) MOORE. Dwight G. (E F I) Mineral Products Division 12255 Miranda St. National Bureau of Standards North Hollywood, Calif. Washington 25. D. C. (Gladding, McBcan & Co.) MOFFAT, John W., Jr. (R) MOORE. sL Dept, of Glass Technology Babcock & Wilcox Co. University of Sheffield 2730 Koppers Bldg., Pittsburgh 19. Pa. MOFFETT, Robert A. (RI) North American Refractories Co. Elmndd, Northumberland Rd. Sheffield 10, England MOORE. Henry (G) 1012 National City E. 6th Bldg. 38 Porter Ave. Cleveland 14, Ohio MOGEY. Leona (G) West New Brighton Staten Island, N. Y. Raytheon Manufacturing Co. (Metro Glass Co.) 55 Cbapel St., Newton, Mass. MOORE. James M. (S) MOHANTY. Gajendra Nath (I) Ashe Brick Co.. Van Wyck. S. C. 6 Kalimati Rd.. E., Tatanagar. India MOHL, Helmuth (W) Fabriea de Loza "La Favorita" S.A. Palma Norte 308, Dcspacho 312 Mexico 1. D. F. MOHLER. Neal F. (SI) MOORE. John G. (W ) 405 E, Popiar 5:.. Robinson 2, 111. (Case Mrg. Corp.) MOORE._Mat:hew S. Pre-rao. 241. Clcmson College Clemson, S. C. 206 Dogwood. Park Forest, 111. (Industrial Publications, Inc.) MOHR. William C. (W I) Shenango China. Inc.. New Castle. Pa. MOHUN, William A. (R) General Abrasive Co.. Inc. 2000 College Ave., Niagara Falls, X. Y. MOLLER. J. Aall Porsgrunds Porselaensfabrik Porsgrund. Norway MOXACK. A. J. (G) 237 Mortimer Ave.. Rutherford. X. J. (Consulting Engineer) MONAGLE. William T. (R) Lloyd Ave-. Stanhope, N. J. (Reaction Motors. Inc.) MON ETA, Fausto Via Mambrcrti 9, Milano, Italy (Ditta Giuseppe Moneta) MONG. Lewis E. (R) S5C6 Loughborough ?:. Chevy Chase 15, Md. (National Bureau of Standards) MOORE & MUNGER (Murray Rushmorc. Jr.) 33 Rector St. New York 6. N. Y. MOORE. Richard S. (RI) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22, Pa. MOORE. Robert E. 1607 Campus Rd.. Toledo 6, Ohio MOORE. Robert F. (R) 3345 Forbes St., Pittsburgh 13, Pa. (Jones & Laughlin Steel Co.) MORAN. J. J. (G) Lar.cis Ave. Spring Rd. Vineiand. N. J. (Kimbie Glass Co.) MORELL. X. L. (R) 313 Union Bank Blag., Bethlehem. Pa (N. L. Morell Co.) MO RENA. Aifred (W I) 90 Hazei St.. Clifton. N. J. (Mucon Corp.) MORE5CO. Albert J. Gen. Del.. Alfred. N\ Y. MONIXGER. Richard E. (W ) Harding Ave.. East Liverpool. Ohio (Wellsviile China Co.) MORGAN. John M. *.\VJ) 42 Laurel Dr.. Scranton. Pa. (General Electric Co.) MONKS. Douglas E. MORGAN. Raymond W. (R) 133 Hillside Terrace, Irvington. N. J. R. W. Morgan Co.. 11695 Woodbine MONKS. J. R. (G) Detroit 39. Mich. 4714 H arbord D r.. Toledo 13. Ohio M ORGAN. Reginald W . (G ) (Owens-Illinois) Bail Brothers Co., Inc.. Muncie. Ind. MONROE. G. DeVon MORGAN. Robert A. (W I) 3913 Whitland Ave., Nashville. Tenn. Pass 3c Seymour, Inc., Syracuse, N. MONTAGNO. Antonio M. (E) MORGAN. Stuart F. (W I) "Marshnere'', Mattapojsett N.eek Rd. 69 Glemnont Ave.. Columbus 14. Ohio (Inland Engineering Co.) Mattapoisett. Mass.' (J. I. Paulding. Inc.) MONTGOMERY. Earle T. (W FI) MORGAN. Willard L. (G) 12 W. Jeffrey PL, Columbus 14, Ohio 1203 Moundview Ave.. Newark, Ohic (Consulting Engineer) (Owens-Coming Fiberglas Corp.) MONTGOMERY, Eldwin C. (GI) MORGAN. W . R. (G) Lihbey-0wens-Ford Glass Co. Sterling Grinding Wheel Co. Jewella Rd.. Shreveport. La. Box SOI. Tiffin, Ohio MONTGOMERY, Thomas B. (G) MORNIN. Bob L. (W I) Pittsburgh Plate Glass Co. 3885 Pierce, Wheatridge. Colo. 632 Ft. Duquesne Blvd. (Coors Porcelain Co.) Pittsburgh 22, Pa. MORREN, Georges MONTGOMERY. Wayne C. (W ) 42 Bd Guillaume Van Hacicn Aluminum Co. of America Forest. Brussels, Belgium 230 Park Ave. New York 17. N. Y. (Diamaat Boart) MOODY. H. Leslie (D) Hyalyn Porcelain, Inc., Box 460 MORRIS. Ernest D. 12 Irby Rd., Heswail. Hickory, N. C. Cheshire. England MOODY. Willis E. (BI) (Morgan Refractories Ltd.) School of Ceramic Engineering Georgia Institute of Technology Atlanta. Ga. MORRIS. George J. (E ) Research Dept., Ferro Corp. 4150 E. 56th St., Cleveland 5, Ohio R oster tr ] MORRIS, Irvine H. <W) ! Ferro Corp, 4150 E. 56th St. j Cleveland, Ohio : MORRIS, John L. (W ) 14427 Allingham, Norwalk, Calif. (Durochromc Dccalcomania Co., Inc.) MORRIS, W. C. (G) 1251 Mayneid Ridge, Qeveiand 24, Ohio (Harshaw Chemical Co.) MORRISON, Boone H. (G) 3. F. Drakenteid i- Co.. Inc. 3ox 51?, Washington, Pa. MORRISON, Neil T. (M) Bell Research. East Liverpool, Ohio MORRISON, R. F. (M) 384 Gulf Rd.. Elyria, Ohio (Harshaw Chemical Co.) j MORRISON, Wallace S. (M) ! Illinois Water Treatment Co. 840 Cecar St., Rockford, III. MORSE, Arthur E. (GJ) 2735 Woodstock, Columbus, Ohio (Federal Glass Co.) MORSE. Clifford E. (G) Dominion Glass Co., Ltd. Box 190, Montreal, Que., Canada MORSE. George T. (W F) Smooth-On Mfg. Co. 572 Communipaw Avc. Jersey City 4, N. J. MORTON POTTERY CO. (S. W. Rapp, Jr.), 315 W. Jefferson St. Morton, III. MORTON, William A. (G) 46 Standish Blvd.. Mt. Lebanon Pittsburgh 23. Pa. (Lottos Engineering Corp.) MOSAIC T ILE CO. Zanesville, Ohio MOSER. Berthold B. Industria Ceramica. Lida. Apartado Aereo 4829, 3ogota. Colombia MOSER, John B. (B) ?4j Ashland Ave., Evanston, 111. (Northwestern L'niversity) 10SER. John L. fRI) 1210 Acorn D r.. D ayton 9. Ohio cW. H. Kietabcr Co.) MOSS. LeRoy L. (E l) 3553 Ingieside Rd. Shaker Heights 22. Ohio (Ferre Corp.) MOTSCH. F. R. (G Faster.Fnrres d a s Co. Marion. In.'!. MOULD. Richard E. (G) P-eston Labs.. Box 149, Butter, Pa. MOULD. W. J. ,\V> Steubenville Pottery Co., Box 1030 Steubenville. Ohio MOUNT CLEMENS POTTERY CO. (Charles E. Doll) Mount Clemen. Mieh. MOURAUD, Paul H. (W ) 14 Ingieside Rd. Upper Montclair. N. J. (Page-Madden Co.) MOWREY. Fred W. (GI) 108 Rodgers Dr.. New Kensington. Pa. (American Window Glass Co.) MUAN. Amulf (B) Pennsylvania State University 23 Mineral Sciences Bldg. University Park. Pa. MUCCIGROSSO, Angelo Box 716, Alfred, N. Y. MUELLER, Edward E. (RI) School of Mineral Engineering University of Washington Seattle 5, Wash. MUELLER. Ferd A. (R) 1360 Rudd. Canon City, Colo. (Freeman Fire Brick Co.) UELLER. James L (BI) Ceramic Engineering Division University of Washington Seattle 5. Wash. MUELLER. John P. (M) 120 Hoffman Ave,, Trenton, N. J. (Mueller Machine Co.) VOL. 3.*), N O . 10 ( 1Ofi) MULL. Lee R. (G) Owens-Coming Flberglas Corp. Barrington. N. J. MULLADY. Russell E. (M) 459 E. High St., New Philadelphia, Ohio (Titanium Alloy Mfg. D iv, National Lead Co.) MULLAN, Joseph (S) Cham pion Brick Co. 7600 Pulaski Highway Baltimore 5, Md. MULLEN. Willard F. (M) Klinger Heights, State College, Pa. (Curtiss-Wrigh: Corp.) MULLER, Gerhard Staatliche Porzellan-Manufaktur Berlin Hartmannstrasse 1-3 (13a) Selb/Oberfr. U. S. Zone. Germany MULLER, Max (RI) Basic. Inc., 845 Hanna Bldg. Cleveland 15, Ohio MULLER, Robert Emaillerie de St. Maurice 29. Rue du Vat d'Osne St. Maurice (Seine), France MULLIGAN. Edwin F. (E) Jones Metal Product Co. We*t Lafayette. Ohio M U LLITS REFRACTORIES CO. (Edward L. Bohn) 10 Canal St.. Shelton, Conn. MULROY, James P. (E l) 965 Lafayette Ave., Buffalo 9. N. Y. (Buffalo School Dept.) MULRYAN, Henry (W ) Sierra Talc Sr Clay Co. Box 390, South Pasadena. Calif. MULVANE. O. E. (E ) 4138 N. 21st St.. Milwaukee 9, Wise. (A. O. Smith Corp.) MUNDY. O. S. (WT1 426 Park Ave.. Wheaton. 111. (Western Electric Co.) MURGATROYD. John B. Rockware Glass. Ltd.. Rock-ware Ave. Grcertford. Middlesex. England MURPHY. Edward J. (W ) Charles 3. Chrystal Co.. Ine. 53 Park PI.. New York 7. N. Y. MURPHY Harry T (R) Climax rise Brick Co.. Climax. Pa. M URPHY, Remington M. (W ) 7 7 4 4 A Wagner Way f.ynnewnod Gardens Elkins Park 17. Pa. (International Resistance Co.) MURRAY. Ernest L. (M) United States Ceramir Tile Co. East Sparta. Ohio MURRAY. Haydn H. (B) 1209 Maxwell Ln.. Bloomington. Iud. (Indiana University) MURRAY. Louis J. Van! Potteries. Ltd.. Box 49 Meverton. Transvaal. South Africa MURRAY. Maurice A. (W I) Redding Place. Towaco, N. J. IB. G. Corp.) MURRAY. Maurice J. (B) Universal Oil Products Co. 30 Algonquin Rd., Des Plaines, 111. MURRAY. Robert S. (G) B. F. Drakenfdd it Co., Inc. Washington, Fa. MUSSELMAN. H. G. (G) 4413 Old Frederick Rd. Baltimore 29, Md. (Carr-Lowrey Glass Co.) M U TTITT. F. C. (R) Algoma Steel Corp. Sauli Ste. Marie. Ont,, Canada MYCALEX CORP. OF AMERICA (Richard A. Humphrey) Box 311, Clifton, N. J. MYERS. C. H. (S) Utah Fire Gay Co. Box 127, Salt Lake City, Utah MYERS. Charles V. ;W ) Eljer Co., Third Ave.. Ford City, Pa. MYERS, Thomas J. (G) 252S Seventh Ave.. Altoona. Pa. (Sylvania Electric products, Inc.) MYERS, Wilbur C. (B) 2711 W. 129th St., Gardena, Calif. I National Cash Register Co.) MV E R SO S. Martin (W ) Myerson Tooth Corp. 90 Hamilton 5t.. Cambridge. Mass. MYGDAL, Rolf L. (W ) 1460 painter Cireie, Apt. 3 St. Laurent, Que.. Canada ( Pilkington's Tiles, (Canada) Ltd.) MYINT, Maung S. Box 288, State College, Fa. MYINT, Simon M. K. (S) University of Pennsylvania 3400 Spruce 5t,, Philadelphia 4, Pa. N NADLER, Marion R. ( B) 5325 Enright Ave., Dayton 3. Ohio (W right-Patterson Air Force Base) NAGAN. Harold R. 8132 Sepuiveda PI., Van Nuys, Calif. NAKAMURA, H. Henry (B) Armour Research Foundation of Iilinoi: Institute of Technology 3427 S. Federal St., Chicago 16. 111. NAKAMURA, Yoshikazu Shoko Glass Co., Ltd. 1. 4-chome. Ginza Gxuo-ku. Tokyo, Japan NANCE, Taylor E. (R) 5223 Alder Dr.. Mission. Kans. (Owens-Coming Fiberglas Corp.) N A PIER. John B. (S) 3574 Napier Avc.. Macon. Ga. (Cherokee Brick Tile Co.) NAPOLITANO, Albert (C) National Bureau of Standards Dept, of Commerce Conn. Ave. Van Ness St. Washington 25. D. C. NARASIMHAN. Malur D. Rm. 4-051, Ceramics Div. Massachusetts Institute of Tech. Cambridge 39. Mass. NASH. Harold S. (DF) University of Cincinnati Ceramics Dept.. Cincinnati 21, Ghio NASH. Herbert (W) Southern California Gas Co. Box 3249. Terminal Annex Los Angeles 54. Calif. NATCO CORP. (R. A. Shipley) 327 Fifth Ave.. Pittsburgh 22. Pa. NATIONAL ENGINEERING CO. SIMPSON MIX-MTILLER DIV. (E. B. Henby) -- ' ' <49 W. Washington Blvd. Chicago 6. 111. NATIONAL INDUSTRIAL SAND ASSN. (V. P. Ahearn) Munsey Bldg., Washington 4, D. C. NATIONAL LEAD CO. (Alex Stewart) 111 Broadway, New York 6. N. Y. NATIONAL LIM E AND STONE CO. (L. G. Love) First National Bldg. Findlay, Ohio NATIONAL REFRACTORIES CO, IN C (R. A. Hitchins) i7th Floor Lewis Tower Bldg, 225 S. 15th St. Philadelphia 2, Pa. NATIONAL RESEARCH CORP. (Philip J, Gough) 70 Memorial Dr. Cambridge 42, Mass. NAUDOT. Jacques Cerabati, 10 Rue Pasteur Pont Sainte Maxencc (Oise), France NAVIAS. Louis (BF) Research Lab, General Electric Co, The Knolls, Schenectady, N. Y. R oster 77 I< AVRATIEL. Hans Jahnitr. J. Latli/Pcgnit: Bavaria, Germany (Sembach 1 Co) F.AL, James E. (R) 16a Sar.dtord Ave. " 'rth Plainr.eld. X. J. tns-Minville. Inc.) t /S . Terence P. Edward Curran Engineering, Ltd. Cardiff, Wales EDREBERG. Roy E. G. (XJ) 31! Pytr.am Ave., Zanesville, Ohio .`EEL. Lee. Ill Box 2504, Georgia Tech.. Atlanta. Ga. 1EELY, Homer E.. Jr. (G) 404 E. 11th Ave., Tarencum, Pa. (Pittsburgh Plate Glass Co.) iEFF, Edward D. (?.) Box 205, Templeton. Pa. ( Harbison-Walker Refractories Co.) \*EFF, John M. (S) Armour Research Foundation 10 W. 25th St.. Chicago 16, 111. XEIMAN, Robert (R) Whip-Mix Corp., Inc. 411 W. Avery Ave.. Louisville 8, Ky. XELSOX. Forrest W. (E l) A. 0 . Smith Corp., 3523 M. 27th St. Milwaukee 1, Wise. NELSON, James A. (R) University of Illinois 204 Ceramics Bldg., Urbar.a, 111. NELSON. Richard P. 8520--32nd Ave., X. W. Seattle 7, Wash. XELSOX, Robert E. fGI 20 Spring St.. Seneca Falls, X. Y. (Sylvania Electric Products, Inc.) KELSON, Robert T. (R) Columbia-Ger.eva Steei Co. Box 510. Provo. Utah XELSOX, William I. (G) IIS Mary St.. Binghamton, X. Y. VSolvay process Div., lilted Chemical 2t Dye Corp.) N waSXSTOXE. Marc t3 ) 10252 F rankstown Rd. Pittsburgh 35. ?a. (Westinghouse Electric Corp.) XETTER. William S. tG) Keystone Abrasive Wheel Co. Cregg ct Hammond Aves.. Camcgic, Pa. XETZSCH. Ertch Maschinenfabrik Gebrueder Xetisch Werxstnasse 19 Selb (Bayern), Gcrmanv NEW. Ryland J. (S) National Sewer Pipe Ltd. Box 34. Oakville, Ont., Canada NEWARK, Frank F. (W) Aluminum Co. of America 1450 Terminal Tower Cleveland 13, Ohio NEWARK. Martin (M) Simonds Abrasive Co. Taeony St Fraley Sts. Philadelphia 37, Pa. NEWBOLD GENERAL REFRACTORIES. LTD., Gavey St. Mayfield, X. S. W.. Australia NEW CASTLE REFRACTORIES CO. (R. W. Rowland) New Castle, Pa. NEWCOMB. Rexford. Jr. (E l) 915 Dodge. Lake Geneva, Wise. (RX Chemical Co.) NEW JERSEY PORCELAIN CO. (J. M. GUfillan) Box 908 Trenton 5, N. J. NEW KIRK. Terry F. (B) General Electric Co. Power Tube Dept. Schenectady. N. Y. .sEW TOX, Avery C. (R) The Refractories Institute First National Bank Bldg. Pittsburgh 22, Pa. Vol. 35, No. 10 (1950) NICHOLSON. Albert H. (D) Federal Glass Co. 515 Innis Ave.. Columbus 7. Ohio NIEMAN. A. H. tG) Ohio Lime Co.. Woodville, Ohio NIELSEN. H. Bach (M) Nichols Engineering 4: Research Corp. 70 Pine St.. New York 5. X. Y. NIKLEWSKI. B K. Main Enamel M:g. Co., Ltd. Gothic Works. Angel Xd. Edmonton. London, X. IS, England NILES FIRE BRICK CO. (Carey E. Lindsay) 165 E. Park Ave.. Niles, Ohio NIPPON TOKI KAISHA. LTD. (Jun Isagawa) s i , Noritakesbinroachi. Nishiku, Nagoya. Japan XISULA, Chester A. (R) 716 Main St.. Riverton. X. J. (Simonds Abrasive Co.) XIJCEN. David (G) CBS-Hytron, Kent 3c Warren Sts. Xewbnryport. Mass. NIYOGI. D. P. M/S Bengal Enamel Works Ltd. P. O. Bengal Enamel Palta (24 Parganas) West 3engal. India NOBES, Frederick L. Carborundum Co.. Ltd., TraEord Park Manchester 17, England NOBLES. Eugene L. (E) 3714 Torrington Ave.. Cleveland 29, Ohio (Ferro Corp.) NOBLES. Melvin A. (B) Oklahoma A. & M. College Mechanical Engineering Dept. Stillwater, Okia. NOCK. Charles J. (R) 315 Front St.. Berea. Ohio (Nock & Son Co.) NODA, Toklti Dept, of Applied Chemistry Faculty of Engineering Nagoya University Cbiku5a-ku. Nagoya. Japan NODURFT. Russ E. (W) 9353 Parrot. Downey, Calif. (Vernon Kilns) NOE. James T. (S) 411 Madison Ave., Brookville, Pa. (Hanley Co.l XOHLE. Richard C. (SI) Claycraf: Co. Box 864. Columbus 16. Ohio NOLAN, William r. Box 251, Alfred. N. Y. NORANTE. Nicholas J. fW ) 609 Spring St.. Latrobe. Pa. fStupakor? Div.. Carborundum Co.) NORDBERG. Martin E. fGF) 134 E. Fourth S', Coming. N. Y. (Coming Glass Works) NORDGREN. Harry Aktiebolagct Gustavsberg Fabriker Gustavsberg, Stockholm. Sweden NORDMEYER. Rudy L. (S) Valley Brick & Tiie Co.. Box 353 Mission, Texas NORDQUIST. Clarence E. 4328 Bagley Ave.. Seattle 3. Wash. NORDQUIST, Lawrence E. (BJ) ComcU-DubiUer Electric Corp. 1605 Rodney French Stvd. New Bedford, Mass. NORDYKE. J. S. (MF) Hammond Lead Products, lac. 1602 Oliver Bldg., Pittsburgh 22. Pa. NORMANDE.AU, Pierre (D) 3660 Hutchison S t Montreal 18. Que., Canada NORRIS. Charles R. (W ) 4024 Diehl Ave., Cincinnati 36. Ohio (Charbeaux Pottery) NORRIS-THERMADOR CORP. (Edgar H. Freeman). 20118 E. Valiev Walnut. Calif. NORTH AMERICAN PH ILIPS CO.. INC. (C. J. Woods) Research 3t Control Instruments Div. 750 S. Fulton Ave., Mt. Vernon. N. Y. NORTH AMERICAN REFRACTORIES CO. 1Robert A. Mottettl 1012 National City E. Sixth Bldg. Cleveland 1:, Ohio NORTHWESTERN GLASS CO. (Edward S. Campbell) 5301 E. Marginal Way. Seattle A Wash. NORTHWESTERN TERRA COTTA CORP. i Burnette Purccil) 1750 Wrigfctwood Ave., Chicago 14, 111. NORTON, Charles L.. Jr. (RF) Babcock L Wilcox Co.. 161 r . 42nd St. New York 17. N. Y. NORTON CO. (O. J. Whittemore. Jr.) Worcester 6, Mass. NORTON. Frederick H. (BFI) Dept, of Metallurgy Div. of Ceramics Mass. Institute of Technology Cambridge 59. Mass. NORTON. George R. Pfaualer Co.. Res. Lab. 1000 West Ave.,' Rochester. N. Y. NORWALK, L:. Marshall H. (XI) WADC Area "B". Box 8604 Wright-Patterson AFB. Ohio NORWOOD. J. Nelson (Life. X) Alfred University, Alfred. N. Y. NOVY, Otto R. (E) Chicago Vitreous Corp. 1425 S. 55th Ct Cicero 50. 111. NOWAK. John M. (B) Bell Aircraft Corp.. Box 1 Buffalo 5. N. Y. NOWELL. Dorroh L.. Jr. (S) 202 Broad St.. Augusta. Ga. (Merry Bros. Brick 3c Tile Co.) NL'SSBAL'M. Theodore 170 Ellis Ave.. Irvington. N. J. NYQUIST. Rcy A. .0 ) 3650 Beechway Btvd.. Toledo 14, Ohio (Libbcy-Qwer.s-Ford Glass Co.) o OAKLEY. W. W. (GF) Box 35. Corning, N. Y. (Corning Glass Works) O'BANNON. L. S. (E) 2239 rarleigh Rd., Columbus 21. Ohio (Battellc Memorial Institute/ OBERST. C air R. (M) Industrial Ceramic products. Inc. 965 W. Filth Ave Columbus 8. Ohio OBERST. Robert B. (I) 323 Weymouth Ln.. Columbus 4. Ohio O'BRIEN. Neil H. (SJ) 20 Central Dr.. Port Washington, N. Y. O'BRIEN. William F. (E) Hope Rd.. Shrewsbury, N. J. (American Potash & Chemical Co.) OCHS. A. C.. BRICK & TILE CO. ` (Elmer E. Apt) Springneld, Minn. O'CONNELL. Thomas B. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo S. Ohio O'CONNOR. Frank Box 235. Alfred. N. Y. O'CONNOR. Jerry B. (M) 1205 Edgewood Ave., Apt. 3-3 Trenton 8. N. J. (O. Hommel Co.) O'DELL. Harold L. (W) Hamilton Porcelains Ltd. 38 Elgin St Brantford, Ont., Canada ODOM. Paul R. (M) B-3 Winship Gardens. Macon, Ga. (J. M. Huber Corp.) OESCH. Robert B. (S) 401 W. Carolanne Dr., Marshall, Texas (Marshall Brick Co.) Roster 79 0E 5T E R L E . Henry (E ) Roescb Enamel U Mfg. Co. W. Main i N. 24th Sis. Belleville, 111, O ESTERLE, Rober: A. (E) 2427 W. Main, Belleville, III. (Rcesch Enamel A Mfg. Co.) iEN\ D. ? . CS) Ogden Engineering Co. Box 213, Ottawa, 111. CGDEN, Ellsworth P. (RF) Box 527, Granby. Colo. (Harrop Ceramic Service Co.) OGDEN, John T. (G c) Class industry S3 W. 42nd St., New York 36. N. OGDEN, William D.. Jr. (RI) Mackeyville, Pa. (N orth American Refractories Co.) O H IO BRASS CO. (J. J. Taylor) Barberton, Ohio O H IO CLAY CO. (Norman E. Denison) Box 1776. Cleveland S, Ohio O H IO LIM E CO. (A. H. Nictnan) WoodviUe, Ohio OH LIG ER. Lewis P. (G) 209 Rtdgeview Dr. East Rochester, S'. Y. (Bausch 4 Lomb Optical Co.) OHNSORG, Roger \V. Box 1049. Alfred. N. Y. OH NYSTY, Basil (R J) University of Illinois 204 Ceramics Bldg., Urbana, III. OLD HICKORY CLAY CO. (Lee F. Powell) Box 271. Paducah, Ky. O'LEARY, W. J. (R) 24 Seminole Ave,, Claymont. Del. (E . I. du Pont de Nemours & Co.) OLENCHCK . Daniel L. (R) 1300 Laird Avc.. Aliqulppa, Pa. (Jones A Laughiin Steel Corp.) OLIVER. D. A. Messrs. Win. jessop & Sons Ltd. Brightside Works, Sheffield. England VER, John C. (E) Porcelain Enamel Institute 1145 19th St., N. vV. Washington 6. D. C. O LIV ERIC, William (G) Rolland Glass Co., Box 232 Clarksburg. W. V. OLSEN. Eric (D) R. R. 63. Dundee. III. (Haeger Potteries. Inc.) OLSEN. Jean M. (G) E. I. du Pont de Nemours & Co.. Inc. Electrochemicals Dept. Wilmington 98. Del. O LSEN. Rangwald S. (E l) 1137 Grant S t, Evanston. III. (A rm our Research Foundation) OLSON, E. E. (G) A. H. Heisey 4 Co., Newark. Ohio OLSON, Hjaimar Aktieboiaget Gustavsbergs Fabriker Gustavsberg, Sweden OLSON, Ole A. (R) 5 Wrenwood C t Webster Graves 19. Mo. (Laclede-Christy Co. Div. H. K. Porter Co.) ON ONDAGA PO TTERY CO. (R . H. Pass) 1856-38 W. Fayette St. Syracuse 4, N. Y. ORAVEC. Joseph A. (S) 3731 N. Newtand Ave., Chicago 34, III. ORBAN. Edward (M) Monsanto Chemical Co. 710 N. 12th Blvd.. St. Louis, Mo. ORDWAY. Fred (B) Portland Cement Association Fellowship National Bureau of Standards Washington 2S, D. C. OREFRACTION. IN C (Albert L. Kreuer) 7423 Thomas St. Pittsburgh 8. Pa. ORMSBY. Walter C. i\V) National Bureau oi Standards Washington 25, D. C. ORNELLA. LeRoy F. (GJ) 3206 Upton Ave.. Toledo 6. Ohio (Glass Fibers. Inc.) ORR. David B. R.R. 2, Oneonta. N. Y. ORTEFIO, Salvatore (W ) General Ceramics Corp.. Crows Mill Rd. Keasbey, X. J. ORTH, Howard S. (W ) Industrial Ceramic Products, Inc. 963 W. Fifth Ave.. Coiumbus 8. Ohio ORTH, Howard S.. Jr. (\V) Y. 236 Fairway Dr., Columbus. Ohio (Industrial Ceramic Products, InC.) ORTMAN. Curtis D. (W ) A C Spark Plug Div. General Motors Corp. 1300 N. Dort Hwy., Flint 2. Mich. ORTMAN, Fred 3. (RFI) Gladding, McBean & Co. 1275 Harrison St. San Francisco 3. Calif. ORTON. EDW ARD, JR.. CERAMIC FOUNDATION (J. L. Carruthers) 1445 Summit 5t. Box 146, Sta. A, Columbus 1, Ohio ORTON. Mrs. Edward. Jr. 39 W. Torrence Rd,, Columbus. Ohio ORZANO, Michael J. (SI) Claycraft Co. Box 866. Coiumbus 16, Ohio OSBORN, Elburt F. (B) College of Mineral Industries Pennsylvania State University University Park, Fa. OSBORN, Walton O. (R) North American Refractories Co. W ater St.. Lock Haven, Pa. OSBORNE. David G. Lemington Glass Works Ltd. Lemington Ncweastle-on-Tvue 5. England OSTERHOLTZ. Carl (R) 3 Mayfield PI.. Metuchen, N. J. (Valentine Div.. A. ? . Green Fire 3rtck Co.) OSTRANDER. Eugene C. (G) Kopp Class. Inc. Box 8255. Swi-svale. Pittsburgh 18, Pa. OSTRANDER. Van R. IB) Endevco Corp. 161 E. California St.. Pasadena, Calif. OTLEY. J. D. iS . John B. Xellv Inc. of Penn. 1720 Cherry St.. Philadelphia 3. Pa. OTRHALEK, Joseph V. (W ) Wyandotte Chemicals Corp. Wyandotte. Mich. OTTAWA SILICA CO. (George A. Thornton) Box 437 Ottawa. III. OTTO. George H. (S) S3 W. Jackson 31vd,, Chicago 4, 111. (Consultant) OTTO, William H. (G) Owens-Corning Fiberglas Corp. Newark. Ohio OTTOSON. Axel (G i) 4300 Highland Ave.. Shadysidc, Ohio (Imperial Glass Corp.) OWEN, Frederick E. (R) Electrical Refractories Co. East Palestine. Ohio OWEN, J. D. i R. Fowler, Ltd.. Fitaray St. Marriekville. Sydney. N.S.W., Australia OWENS-CORNING FIBERGLAS CORP. (A. C. Siefert) Newark, Ohio O W E N S-IL L IN O IS (W . D. Miller) Box 1019, Oakland 4. Calif. OW ENS-ILLINOIS (E. W. Summers) Technical Center 1700 N. Westwood Ave., Toledo 7, Ohio OWENS, James S. (W) Champion Spark Plug Co., Ceramic Div. 8525 Butler Ave.. Detroit 11, Mich. Vol. 35. No. 10 (1956) OXLEY. Chartes A. (\VJ) 1503 Park St.. Robinson, 111. (Case Mfg. Corp.) P PABST, John G. (M) 552 N. Main St., Butler. ?*. (Saxonburg Ceramics) PACHL, Margaret (D) University of North Dakota Ceramics Dept., Grand Forks. N. D. PA CIFIC CLAY PRODUCTS (John D. Fredericks) Box 2173. Terminal Annex Los Angeles 54, Calif. PA C IFIC COAST BORAX CO. (M. H. Pickard) 100 Park Ave.. New York 17. N. Y. PACXMAN, Willard D. (W I) E. M. Knowles China Co. East Liverpool, Ohio PADEN CITY POTTERY CO. (M errill C. Sondlcs) Paden City, W. Va. PA D FIE L D . Ralph C. (R) 2990 Avon Rd.. Bethlehem, Pa. (Bethlehem Steel Co.) PADILLA. Federico Apartado Postal 26783, Mexico, D. F. (Electroceramica, S. A.) PA FF, John A. (G) 232 N. Sixth St., Reading, Pa. (Willson Products, Inc.) PA FFORD. Ray W. (SFI) Acme Brick Co. Box 425. Fort Worth 1. Texas PA LA DINO . Albert E.. Jr. Raytheon Mfg. Co., Res. Div. W altham 54, Mass. PALMER. Delos M. (D) 4401 Jackman Rd., Toledo 12, Ohio (Delos M. Palmer 4 Associates) PALMER. Rufus N. (M) 476 Broadmoor Avc., Pittsburgh 34, Pa. (Consultant) PALM ER. Willard E. (SI) 768 N. Cress St. Newcoir.erstown. Ohio (Clay City Pipe Co.) PA LM ERI. Victor R. (E) Hermetite Corp. 702 3eacon St.. Boston 15. Mass. PALMOUR. Hayne III (BI) Box 204. Signal Mountain. Tenn. (American Lava Corp.) PA LTZER. Clifford (X J) 1100 Peace St.. Pella, Iowa PA NGELS. Alfred A. (W J) Ave. Polanco 18. Mexico 5. D. F. (Sanitarios " EI Aguila" S. A.) PANGELS. Heins J. (W) Mosaic Tile Co. Pershing Rd.. Zanesville. Ohio PAPER MAKERS IM PO RTIN G CO.. INC. (Charles Brian) 44 S. Second St.. Easton,-Pal * PAPIER. Harry (S) Natco Corp., Bax 267, Cordova, Ala. PA PP IS. James 433 Brookline Ave., Boston IS, Mass. PARCEL. Martin W. (W ) Robertson Mfg. Co. Box 848. Trenton S. N. J. PA RIK H . Niranjan M. (B) Metallurgy Dept. Scientific Laboratory Ford Motor Co., Dearborn, Mteh. PARKER. Glitlden M..' Jr. (D) Glidden Pottery, Inc.. Alfred. N. Y. PARKER. Harry (BI) 1013 Quebec Terrace Silver Spring, Md. (National Bureau of Standards) PARKER, Henry F. (G) Pittsburgh Plate Glass Co. Creighton. Pa. Roster S1 ARKER James W . Jr. iS l 7217 Shakespeare Rd. Columbia. S. C. I Carolina Ceramics. Inc.) ARKER, Leon !G H. I. Thompson Fiber Glass Co. ' _ ,i Cariio.a St.. Los Angeles 7. Calif. A R. Raymond \V. IS) .inee Clay Product Co. Box 7*6. Alliance. Ohio ARK ISON. Robert G. Noble Kali. Rnt lid . Champaign, 111. ARM AN, Donald \V. 2103 Seventh Ave., K.. Renton, Wash. A RM ER. Jess H.. Jr. (G) Owens-Illinois, Technical Center 1700 N. Westwood Ave.. Toledo 7, Ohio 'ARNHAM , H. General Refractories Ltd. Worksop. England ARSON, James A. (W I) 6217 Broadway, Indianapolis 20, Ind. (Vitroseai Corp.) ARSONS. Douglas E. (S) Building Technology Division National Bureau of Standards Washington 23, D. C. PARSONS. J. R. (R) Chicago Fire Brick Co. 7331 S. Ashland Ave.. Chicago 20. PA RTIN GTON, Philip A. Box 787, Alfred. X. Y. PASCHAL, Forrest A. (S) Box 239. Siler City. N. C. (Huber-Wareo Corp.) PASK. Joseph A. (X F Il Division of Mineral Technology University of California Berkeley . Caiif. PA SFY, Stanley F.. Jr. (R) Ceramic Suppiy Co., Crooksville. Ohio PASS. J. 5._(\Y) * Pass 2: Seymour. !r.e., SoWay Sta. \ Boyd Ave., Syracuse 9, X. Y. F ! R. H. (W) .Jnor.caga Pottery Co. 1330--58 W. Fayette St. Syracuse A N. Y. PA SS SEYM OUR. INC. t j. S. Pass) Solvay Station. 50 Boyd Ave. Syracuse 9. N. Y. PATE5C. Sherwood E. ,'S) M idland Brick & Tile Co. Chillicothe. Mo. PA TE L . Chandrakant J. Box 236. Alfred. N. Y. PA TERSO N . G. W. (R) Refractories Engr. St Supplies. Ltd. 99 Clinton St.. Hamilton. Ont.. Canada PA TRICK . Ens. Howard W. (XJ) NAS Kingsville. SNA Kingsville, Texas PA TRICK . Robert F. (E l) Pemeo Corp. 2554 Greenmount Ave. Baltimore 18. Md. PA TT E R SO N . Richard C. (W) United States Ceramic Tile Co. East Sparta. Ohio PAULSON. Fred H. (R) 28 Greendale Ave., Worcester 6, Mass. (Norton Co.) PA V LISH . Arnold E. (GF) 2904 Clarkson R d. Cleveland Heights 18. Ohio (Cleveland Suppiy Co.) PA W LOW SK I. Edward J. (W) I I Morris St.. Amsterdam. N. Y. (Mica Insulator Co.) PEARCE. Charles S. (F) American Ceramic Society 4033 N. High St., Columbus 14, Ohio RCH . Howard C. (WT) -- 27 H illcrest Manor. Midland. Pa. (L outhan Mfg. Co.) PEARCH. William M. (W I) Akron Porcelain Co.. Akron 14. Ohio PEARSON, Edward P. (X ) Basic, Inc.. Suj Hanna Bldg. Cleveland 13, Ohio PEARSON. E. J. & J., LTD. (Charles A. G. Thomas) Firebrick Works Stourbridge. Worcs, England PEASE. Philip J. (G) 1403 Washington Ave. Parkersburg, W. Va. (Drmutb Glass Works, Inc.) PECHMAX. Alexander (W I) 1137 E. Pasadena. Pomona, Calif. (Pom ona Tile Mfg. Co.) PECK. J. Clair (SI) 243J Brookside Ln.. York. Pa. (Glen-Gery Shale Brick Corp.) PECKHAM, George W. (C) Chattanooga Glass Co. Corsicana, Texas PECKHAM. Robert H. (G) Pennsylvania Optical Co. 234 S. Eighth St., Reading, Pa. PEDRICK. W. W. (G) Armstrong Cork Co., Millville. N. J. PEDU. Richard K. (M I) 139 Chestnut St., Garden City, N. Y. PEEL. G. N. Associated Lead Manufacturers Ltd. Crescent House Newcastle-on-Tyne, I. England 111.PEILER. Karl E. (GF) Hartford-Empire Co. Div. Emhart Mfg. Co. Box 1620. Hartford 2. Conn. PEKAREK. Edward G. (B) 4898 Waldamcre Ave.. Willoughby, Ohio (Thompson Products. Inc.) PELL, Roben E. 909 W. Nevada St.. Urbana, 111. PELZ. Roben W. (E l) 2706 Grovewood. Parma 9, Ohio (Ferro Corp.) PEMCO CORP. (Richard H. Turk) 5301 Eastern Ave., Baltimore 24, Md. PEXBERTHY. Larry- (G) Penberthy Electrom elt Co. 2317 47th 3. W.. Seattle 16. Wash. PENCE, rn rrc s t K- (W 'rt) 1609 Scenic Dr., Austin 3, Texas (Ceramic Sncictv of the South West) P E N N SY L V A N IA PU L V E R IZ IN G CO. (William J. Woods. Jr. 1 Two Ga:rvay Center Pittsburgh 22. Pa. PENTECOST. Joseph L. 647 Monticello Dr,, Fails Church, Va. PERENY, Andrew (M l Pereny Equipment Co. 893 Chambers Rd. Bax 133. Station A. Columbus. Ohio PERKINS. Harreil L. (Ml Central of Georgia Railway Co. 1212 Rhodes-H aveny Bldg. Atlanta J. Ga. PERKINS. W alter W. (W I) 871 Jacohy Rd.. Copley. Ohio (United States Stoneware Co.) PERRY. Paul E. (B) Allegheny Ludlum Steel Corp. Brackenridge. Pa. TERRY. R ohen F. (W I) Box 2SJ. Victor. X. Y. (Victor Insulators Div.. I-T-E Circuit Breaker Co.) TERRY. T. Ray (W) 1209 Bawcom. Sweetwater. Texas (General Electric Co.) PERTUCH. W alter A. R. (D) Franklin Institute Library 20th 8c Parkway, Philadelphia 3. Pa. PESKIN, William L. (R) Carborundum Co., Perth Amboy, N. J. PETERS. Forrest I. (W) 113 Hendy Ave.. Elmira, N. Y. (Coming Glass Works) PETERSEN. Fred A. (EFT) Hunter-Thomas Associates 2130 Keith Bldg., Cleveland 15. Ohio VOL. 3.7, No. 10 0000) PETERSON. Alben F. 90 Fresh pock Pky. Cambridge 33. Mass. PETERSON. Donald K. i.Ei 741 Hill Ave.. Pittsburgh 21, Pa. (Westinghouse Electric Corp.) PETERSON. Jack D. (G) 30.-9 123rd St.. Toledo 1!. Ohio (Owens-Illinois i PETERSON. Jack L. ,R !i 320 Milan Ave. South Pasadena. Caiii. (Melvin L. Jor.tt Cj .,- PETERSON. John A.. Jr. (W) Metal St Thermit Corp., Carteret. N. J. PETERSON, W. H.. Jr. (R) Valentine Fire Brick Co. Div. A. P. Green Fire Brick Co. Woodbridge. N. J. PETRIE. Lloyd R. (W ) 305 Western. Abingdon, 111. (Abingdon Potteries, !ne.) PETT, Tyler G. (G) Kopp Glass. Inc. Swissvale, Pittsburgh IS. Pa. PETTY. Frank (W) 2771 W. 230th St. Fairview Park 26. Ohio (Cleveland Ceramic Corp.) PETTY. Howard E. (S) 3131 Ryons, Lincoln 2, Xebr. (Yankee Hill 3rick Mfg. Co.) PFAUDLER CO. (Sidney W. McCann) 1000 West Ave.. Rochester 3. N. Y. PF E IF F. C. H. (R) Curran-pfcift Corp. Box 327. Metuchen. N. J. PFEIFFEN BERG ER. Lucas E. University of Illinois 204 Ceramics Bldg-. LTrbana, 111. P F E IF FE R . W. H. (E F I) Frigidaire Div.. General Motors Corp. 300 Tavlor St.. Dayton 1. Ohio PFLEGER. George E. CM) riarskaw Chemical Co. 3237 S. Garfield. Las Angeles 22. Calif. PHADKE. V. S. Centrai Toileries. Lid. Ttvrari. Nagpur 2. India PHELPS DODGE CORP. MORENCI BRANCH (L. L. McDaniel) Morenci. Aril. PHELPS. Girard W. (M) 410 E. Magnolia Dr.. Murrisvii'e, Pa. (United Cay Mines Corp.) PHELPS. Stuart M. (RF) Mellon Institute. Pittsburgh 13, ?a. PH ILLIPS. Adrian W.. Jr. (R) 316 Fairmont Ave.. New Castle. Pa. (Shenango Chinn. Inc.) T H IL L irS . Charles J. I.G) Radio Corp. of America RCA Victor Div., Bldg. 56-1 Camden. N. J. PH ILLIPS. Edwin L. (M I) . . Carolina Pyrophyllite Col Box 2414. Greensboro. N. C. P H IL L IPS . Gordon D. (W) Olean Tile Co. 103 S. Clark St.. Olean. N. Y. PH ILLIPS. James G. (RI) Dept, of Mines it Technical Surveys Mines Branch. Industrial Minerals Div. Lydia St., Ottawa. Ont.. Canada PH ILLIPS. Leigh F. Box 87. East Quogue. L. !.. N. Y. PH IL L IP S . Richard A. (W J) 1836 Willow Ave. Niagara Falls. N. V. (Sprague Electric Co.) PHILLIPS. W. Eric (G) Duplate Canada Ltd., Box 367 Terminal A, Toronto. Ont.. Canada PH O E N IX . Richard C. (I) R. R. 1. Wynnewood Bound 3rook, N. J. R oster S3 PICKARD, M. H. (M i PLATT. Allan S. (SI Paeisc Coast Borax Co. Structural Clay products (nititutc 00 Park Ave., New York 17, N. Y. 1947 Grand Centrai Terminal Bldg. PICKETT, Albert R. (R) New York 17. N. Y. Aluminum Co. of America PLEASANTS. Luther E,, Jr. (Gi ISO! Alcoa Bids.. Pittsburgh 19, Pa. 6002 Brookneld Rd.. Richmond V'a. T ER, Arthur 0 . (M l (Allied Chemical Sc Dye Corp.) IIS Trevor Court Rd. PLOETZ, Edwin C. H. (E l) Rochester 10, N. Y. 680 S. Lincoln Ave,, Kankakee, ill. (Heany Industrial Ceramic Corp.) (A. O. Smith Corp.) PIERCE GLASS CO. (J. C. Boxzo) PLOETZ, George L. <\V) Railroad Ave., Port Allegany, Pa. 261 Swaggertowo Rd., Scotia 2, S . Y. PIERCE, J. Allen (R> (General Electric Co.) 798 Chalmers PI., Pittsburgh 16, Pa. PLUMBO, Victor A. (G> (Karbison-Walker Refractories Co.) General Glass Equipment Co. PIERPO N T, Hartan T.. Jr. (R) S S. Virginia Ave.. Atiantie City, X. J. Norton Co., 1 New Bond St. PLUMMER, Harry C. (SF) Worcester 6, Mass. Structural Clay Products Institute PIERSON, James F. (M l) 1520 18th St.. X. W. Pemco Carp.. Sales Dept. Washington 6, D. C. 3601 Eastern Ave.. Baltimore 24. Md. PLUMMER, Norman (M) PICO TT, Phillip G. (R) State Geological Survey of Kansas Box 345. Norris. Tenn. Lawrence, Kans. (U nited States Bureau of Mines) PLUMMER. Wiiliam A. (G) PILKINGTON. Lawrence K. A. Corning Glass Works. Corning, X. Y. Messrs. Piikington 3ros., Ltd. PLUNKETT. Jerry D. Glass Works, Se. Helens, England 78 Westgate, Cambridge 39, Mass. PINCUS. Alexis G. (B) PLSCH. John A. (W ) General Electric Co.. Res. Lab. 63 Spruce Sc., Westfield. Mass. Box 1083. Schenectady, X. Y. (Cortland Grinding Wheels Corp.) PIN NEY, J. M. (W ) POFFEXBERG, Scott (M) Harker Pottery Co. 11616 Cnenauit St. East Liverpool, Ohio Las Angeles 49. Calif. PINNOW. Harley R. (W) POHLE. Joachim H. P. Pond St., R. R. 19 Pohle Co.. 37 A Sutelstrasse East Liverpool, Ohio Hannover. Buchholz, Germany (Hall China Co.) POISSON. Louis PIN O T TI. Fred D. (G) Faencerie de Badonvillcr 2324 Middlesex Dr.. Toledo. Ohio Badonviller, Meurthe e: Moselle. France (Kimble Glass Co.) POLAND. Milton E. (W Jt) PISULA. J. Donald (R) 523 S. Pleasant St.. Royal Oak. Mich. Corning Glass Works. Coming. N. Y. (Champion Spark Plug Co.) PITTEN CER. John T. (W) POLAR. Alfredo (W) Box 207. Newell, W. Va. National Tiie Sc Mfg. Co- (Homer Laughlin China Co.) Anderson. Ind. TMAX. lack (G) POLE. Gordon R. ( 3 FI) Owens-Illinois, Technical Center 2592 S. Shore 31vd. 1730 N. '.Vestw-ood Ave. White Hear Lake 10. Minn. Toledo 7. Ohio (Minnesota Mining & Mfg. Co.) PITTMAN. William C. (R) POLES. Alfred P. (W) 410 W hitthonte Dr.. 325 Arborlea Ave.. Morrisvilte, Pa. W yoming. Cincinnati 15. Ohio (Clifton Ceramic Mfg. Co.) (Chas. Taylcr Sons Co. I POLHEM.US. D. W. (R) PITTS. Joseph W. (E"t Carborundum Co. 5714 3eech Ave,, Bctaesda 14. Md. Perth Amboy, N. J. (National Bureau of Standards) POLK, Arthur e ' (W) PITTSBURGH CORNING CORP. R. R. 1. Dowagiac. Mich. (W alter D. Ford) (Produce Terminal Corp.) Research & Development Dtv. POLSKY. Jack W. (M) Port Allegany, Pa. W. H. & L. D. Betz Co. PITTSBURGH PLATE GLASS CO. Gillingham Sc W orth Sts. (S . F. Cox) Creighton, Pa. P hiladelphia 24. Pa. PIXLEY, Francis V. (S) 358 Grand St.. Newburgh, M. Y. POMEROY. William T. (W) Sterling China Co. PLACE. Tom M. (BI) Helipot Carp. East Liverpool, Ohio 916 Meridian St. POMPEI. Luigi South Pasadena, Calif. SANAC Soc. per Az. Refrattari PLACE. Thomas M.. Jr. (B) Argiile e Caolini 2413 W. 116th St.. Inglewood 4. Calif. Via Martin Piaggio 13-7, (Helipot Carp.) Genova, Italy PLAGGE. Vernon L. (G) POND, Marvin H. (W ) 54 W oodland Ave.. East Orange. N. J. 221 Ridge Ave.. Gettysburg, Pa. (W estinghouse Electric Corp.) (Keystone Ridgeway Corp.) PLA N JE. Christian W. (R I) POOLE. James P. (G) Gladding, McBean Sc Co. Brockway Glass Co., Ine., Plant 2 2901 Los Felix Blvd. Brockway, Pa. Los Angeles 39, Calif. PORCELAIN METALS CORP. PLANJE. Theodore J. M. (B) (C. J. Kleinhans) 1400 S. 13th St. 4 Summit Ave., Rolla. Mo. Louisville 10. Ky. (Missouri School of Mines) PLANK, Ross D. (W) 2335 Shadowlawn Ave.. PORST. Edward G. (E l) 1418 Stonewood Rd.. Baltimore 12, Md. (Pemco Corp.) Los Angeles 39. Calif. PORTER. Frank R. (EFI) (B. F. W agner & Co.) 318 E. Clark St.. Crown Point, Ind. FLA N K EN H O RN . William J. (E FI) (Inland Steel Co.) Chicago Vitreous Corp. PORTER. J. L. (B) 1427 S. 55th C:. Kaiser Aluminum & Chemical Corp. Cicero 50, 111. 1924 Broadway, Oakland 12. Calil. Vol. 35. No. 10 (1956) PORTER, Sidney C. (Ri Sox 34. East Liverpool, Ohm i Consultant) PORTER. Wallace S. (W) Universal-Rur.dle Corp.. Box 588 Hondo, Texas PORTS, David W. 212 X. McCullough, U rbina. 111. POSEY IRON WORKS, INC. (Frank A. Fix) Lancaster, Pa. POSLUSZNY, Raymond F. <M` 242 E. Meehan Ave. Philadelphia 19, Pa. (Refractory Specialties Co.) POST, Benjamin F. (RI) Cortland Grinding Wheels Corp. Chester, Mass. POST. Zarr A. (W ) 5020 Elm St. Bethesda. Washington 14. D. C. (Meipar. Inc.) POSTE. Emerson ?. (EFI) 616 Baldwin St.. Chattanooga 3. Tenn. (Consultant) POSTLEW AITE, Donald E. (W I) Universal-Rundle Corp., Box 300 Redlands. Calif. POTTER. Alan 35 Shepard St., Rochester. N. Y PO TTER. John F. (R) Bell Telephone Lab. Murray Kill. N. J. POTTERS SUPPLY CO. (William W. Irwin) 11 Washington Sc. East Liverpool, Ohio POTTIER. Henri Cie. Generale d'Electro-Ceramique 12 Rue de la Baume. Paris 3". France POTTS. Amos ? . (SF) 359 E. Main St., Logan. Ohio (Logan Clay Products Co.) POULOS. Nick E. (B) 1764 Flagler Ave. X. E.. Atlanta. Ga. (Georgia Institute of Technology) POULTCX. Rcb-rt F. (W) 2763 X. Congress Rd.. Camden 4. X. J (Universai-Rundle Corp.) POUNDSTONS. William W. (G) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22. Pa. POWELL. John A. (W ) 429 5. West End Ave.. Lancaster. Pa. (Radio Corp. of America) PO W E L L. Lee F. (M) Old Hickory Q av Co. Box 271. Paducah. Ky. POW ELL. O. E. (SO Indiana Drain Tile Co., Inc.. Box 66 Brooklyn, Ind. POWELL. Richard H. (M) 1279 N. Main St.. Jamestown. N. Y. POW ERS. Don W. 1201 Highland Ave.. Abilene, Texas POWERS. George H. (R) 261 Woodfield Rd. Washington Township Westwood P. O., Ns J^ (Norton Co.) POYNOR. T. Wythe (S) Acme Brick Co., Box 1278 Oklahoma City, Okla. POZEFSKY. Leo (R) 3074 Cornwall Rd.. Bethlehem. Pa. (Bethlehem Steel Co.) POZZANGHERA. Sam A. (G) Bauach & Lomb Optical Co. 635 St. Paul St.. Rochester 2, N. Y. PRACHANKHADEE, Manoon Dept, of Science, Ministry of Industry Bangkok, Thailand PRALOW. Walter E. L. Zahnfabrik Wienand Sohne 3c Co., Krs. Offenbach/Main Sprendlingen, Germany PRATT. Donald S. (E) 3422 Eighth Ave.. Beaver Falls. Pa. ( Ingram*Richardson Mfg. Co.) R oster 8. PRECISION GRINDING W H E E L CO.. INC. Alexander M. Slakciy) 3301 Torrestlaic Ave. Philadelphia 36, Pa. PRESCOTT. Prank S. (G) ' <)U Kimball Ave.. Arnold, Pa. fictsburgh Plate Glass Co.) ? . . E Y . Clive (M i Minatron Corp.. Belle Mead, N. J. PRESTON, Frank \V. (G Preston Labs., Box 149, 3utler. Pa. PREW ITT, J. K. (S) Elgin Standard Brick Mfg. Co. Elgin, Texas PREY'. A rthur H. (M I) Carborundum Co., Niagara Falls, N. Y. PRICE. Glen M. (R ) General Reirartories Co., Box 1673 Baltimore 3. Md. PRICE, James E. (R I) 19S6 Guernsey Ave., Abington, Pa. (Simonds Abrasive Co.) PRICE, J. Russell (D) " Fairmeadows" Box 211, R. R. 3 Esm ond 17, R. 1. (D oulton & Co., Inc.) PRIDDY, K. O. (S) Barium Reduction Corp. South Charleston 3, W. Va. PR IESTLEY . J. Edward Huntly Brick 4 Fireclay Co.. Ltd. Box 14, Huntly, New Zealand PRIMM. Herbert E. (R) 1658 Elevado Ave., Arcadia, Calif. (Harbison-W alker Refractories Co.) PRINCE. Alan T. (B I) Mines Branch, Ottawa. Ont., Canada PR IN D LE. William R. (G) Hazel-Atlas Glass Co. ISth 4 Jacob Sts.. W heeling. W. V'a. TRIOR. Gordon M. (M ) Box 101, Scotch Plains. N. J. (Whittaker. Clark 4 Daniels, Inc.i PRIOR. Harold D. (M I) ,025 Connecticut Ave.. N.W. Vashir.gton 6. D. C. (Titanium Alloy Mfg. Div.. National Lead Co.) PROCTOR. Thomas M-. Jr. (G J) Coming Glass Works Coming, N. Y. PROCTOR. W. J,, Jr. (B) Southern Clays, Inc., Gordon. Ga. PROKOPEC. Robert (G) 309 N. Tillotsou Ave., Muncie, Ind. (Ball- Bros. Co, Inc.) PROKOPOW ICZ. Thomas I. ( 3 J) Sprague Electric Co. North Adams, Mass. PROMAT DIVISION. PO OR * CO. (W . F. Stark) 851 S. M arket St. W aukegan, III. PRYOR. Edward K. (R) 902 N. Acacia, W hittier, Calif. (Pryor-Giggey Co.) PUCKETT. John P,, Jr. (G) Leeds & Northrop Co. 4901 Stenton Ave., Philadelphia 44, Pa. PUERTO RICO CLAY PRODUCTS CORP. (O scar Gonzalez Cabaniilas) Box 4729 San Juan. Puerto Rico PUT. W ong Yuk Castle Peak Ceramic C o, (1940) Ltd. Castle Peak. N .T, Kowloon. Hong Kong PU LLIAM . George R. (B) 6920 M orrison PI.. Madeira. Ohio (Cincinnati Milling Machine Co.) TULS. George (R) Hs.cme Brick Co. ox 425, F ort W orth, Texas i ,,LS. Josef "Austria" United Enamel' Works Wilhelminenstr. 30 Vienna XVI. Austria Vol. 35. No. 10 (1956) HUMPHREY. William 1. Murex Welding Processes Ltd. Hertford Rd. Waltham Cross. Herts. England PUNTNEY, L. E. (R !) 908 E. Jackson. Mexico. Mo. (Mexico Refractories Co.) PUPULIDY, Alexander (Hi 35J 1-85th S t, Apt. -K Jackson Heights 72. N. Y. (Arabian American Qii Co.) PURCELL. Burnette (S) Northwestern Terra Cotta Corp. 1750 Wrightwood A ve, Chicago 14, 111. PURNELL, Hugh J. (R) 761 Loretta S t, Pittsburgh 17, Pa. (United States Steel Corp ) PYRO R EFR A C TO R IES CO. (0 . E. Miller) Box 488 Oak Hill. Ohio Q QUIGLEY CO., INC. (R. J. Demaison) 415 Madison Ave, New York 17. N. Y. QUIRK, John F. (W) Battclle Memorial Institute 505 King Ave, Columbus, Ohio QUIRK, Virgil P. (3) 3002 Allen St., Owensboro. Ky. (General Electric Co.) R R , Santiago E. Antunez de Mayolo Industria Macional Ceramica y Anexos Casilla Postal 84S, Lima, Pena RABE, N. A. (W ) 10 W. Palmer Ave, Collingswood. N. J. (Universal-Rundle Corp.) RABIN, William J. (W> 19A-1 Redfield Village. Metuchen, N. J. fFerricore. Inc.) RADCZEWSKI. Otto-Em st Institut fur Gesteinshuttenkunde Mauerstrasse 3. Aachen, Oermanv RADIO MATERIALS CORP. (R. D. Bourgerie) 3325 N. California Ave.. Chicago IS. 111. RAGATZ, Eugene C. (M) Allen-Bradley Co. 136 W. Greemield Ave. Milwaukee 4, Wise. RAGGON. Frank C. (G) 4202 Bowen R d, Toledo 13, Ohio (Owens-Illinois) RAHE. Villem Box 233. Alfred. N. Y. RAIBLE. A. J. (W) Briggs M anufacturing Co. 415 W. Seymour Ave. Cincinnati 16. Ohio RAINE. Frank F. (RI1 111 E. Vine S t, Mexico. Mo. (Mexico Refractories Co.) RAINEAR. John F. (S) 73 Sharon Ave, Hamburg. N. Y. (Buffalo Brick Corp.) RAIT. J. R. Research Controller Hadfields Ltd. Ease Hcda Works. Sheffield 9. England RALSTON, O. C. (MF) 4333 Clagett R d, Hyattsville, Md. (U. S. Bureau of Mines) RALSTON. Thomas E. (R ) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22. Pa. RAMM, Eric H. L. Brisbane 4 Wunderlich Ltd. Lord S t, East Perth. W est Australia RAMSDELL. John L. (E J) 17 Ellicott Ave., Batavia. N. Y, RAMSDEN, C. E. C. E. Ramsden 4 Co. Ltd. Foley Colour 4 Chemical Works Fenton. Stoke-on-Trent. England RAMSEY. Thomas H,, Jr. (BJ) 1615 Homewood P I, Dallas, Texas RAM TITE CO. (Louis J. Jacobs) 2563 W. 13lh S t, Chicago 3. 111. RANDALL. Theodore A. (D.1 State University of New York College of Ceramics, Allred. N. Y\ RANDOLPH. Hal F. (R) Mexico Refractories C o, Mexico. Mo. RA N D O LPH . Robert L , Jr. (BJ) 2 N. Parkcale D r, Chattanooga. 7 :n n . (American Lava Corp.) RANKIN. James E. 3ox 302! State College Sta. Raleigh. N. C. RANKIN. James J. (M) St. Joseph Lead Co, Box 97 Monaca, Pa. RANKINE, Adam S. (R) Martinsville. N. J. (Johns-M aaville Corp.) RAPP, Carl H. (W I) Globe-Union, In c , 900 E. Keefe Ave. Milwaukee 1, Wise. RAPP, S. W,, Jr. (W ) Morton Pottery Co. 315 W. Jefferson S t, Morton. III. RASMUSSEN. R. K. (G) Mississippi Glass Co, Fullerton. Calif. RASMUSSEN. W ayland G. (S) Mason City Brick 4 Tile Co. 200 3rick & Tile Bldg. Mason City, Iowa RASSNER. Donald D. (SI) 1500 Alabam a A ve, Jasper. Ala. (Natco Corp.) RATCLIFFE. Harry J. (M) 724 Bunker Hill Ave, Trenton, N. J. (Unique Kilns of Trenton, Inc.) RATCLIFFE. Temple W. (R) 244 Buffalo S t , Beaver, Pa. (Babcock 4 Wilcox Co.) RATHMANN. Clyde L. (G) R. R. 3. Corning. N. Y. (Coming Glass Works) RAUCH. Harr;.- W. (G) 342 Spring La.. Bridgeport, pa. (Foote M ineral Co.) RAUSCHES. Louis C. (G) 2374 Geneva Ave, CIrnsice. Pa. (Phiico Corp.) RAY. E. Harold (M l B. F. Drakenfeid 4 Co, Inc. Box 519. Washington, Pa. RAY. John G. (G) SrWania Electric Products. Inc. Cottage Place. Mir.eoia, L. I , N. Y. RAYTHEON MANUFACTURING CO. (Leo J. C ronin) Foundry Ave. W aitham 54. Mass. RAZEY. Robert M. (R) 486 Asbiand A ve, Detroit 15. Mich. (Great Lakes Steel Corp.) REA. Robert F. (YVI) Stupakoff D iv , Carborundum Co. Latrobe. Pa. REAGAN. Cornelius J. (S) 532 Woodmont St. East McKeesport. Pa. - (Van Ormer Brick Co.) REAGAN, M ichael M. (E) Stamped & Enamelled W are Ltd. Guelph Ave.. Hespeler. O n t, Canada REBCHOOK, Gregory V. (W ) Radio Materials Corp. 1708 W. Belmont Ave. Chicago, 111. REDW INE. Richard H. R. R. 1. R ural Hall. N. C. RED W ING POTTERIES, IN C (Thomas M. Arnold) Red W ing. Minn. REECE. Charles W. (XJ) 105 S. Miller S t, Greer. S. C. REED, A. J. (S) 521 W oodbine S t, W illard. Ohio (N ational Clay Pipe Research Corp-) REED. Carl E. (G) 1410 E. Main S t, Lancaster, Ohio (Sharp-Schurtz Co.) Roster 87 AEED. George C . 1! iB J) 413 S. 25th S:.. Apt B-3 South Bend. !nd. ( 3end;x Aviation Corp.) HEED, Madison IV.. Jr. 'SOI Ave. "G". Austin. Texas S Paul H. (R! ll'/j Fairrr.cn: Arc., Sew Castle, Pa. (New Castle Reiractories Co.) REEVES. Harold. Sr. (W) Fitzpatrick Industries Inc. r.ox 30, East Palestine, Ohio REFRACTORIES INSTITUTE. THE (Avery C. Newton) First National Bank Bldg. Pittsburgh 22. Pa. REFRACTORY 4 INSULATION CORP. (A. S. Ararine) Port Kennedy, Pa. REGENBRECHT. Albert. Jr. (G) Sylvania Electric Products. Inc. Burlington. Iowa REGOUT. Joseph F. E. N. V. de Sphinx, Maastricht, Holland REGOUT, L. F. H. N. V. Porseiein cn Tegciiabriek Mosa Mcerssenerweg 358. Maastricht, Holland REID. Frank ?. American Ceramic Society a055 N. High St., Columbus 14. Ohio REID . Harry ?.. Jr. (M) McKay Co. 850 G rantly Rd., Y o rk . Pa. REIMAN N. A. Gilbert (W ) 114 Pine hurst PI.. Schenectady 4, N. Y. (General Electric Co.) REIM ER. John J. (W t) Keystone Ridgeway Corp. Gettysburg. Pa. REIN. Peter (W) 174* \V. Sycamore, Kokomo. Ind. (Kokomo Sanitary Pottery Corp.j P -- NKE.V Arthur G. CR; `phns-Manviiie Sales Corp. .*'550 Guilcball Bldg. Cleveland 15, Ohio REINKER. Gerald E. (G) General Eiectric Co.. Lamp Div. 1135 E. 1S2nd St.. Cleveland 13, Ohio REISCHEL. Frank (W ) 2733 Maydower. Arcadia. Calif. (Dileetron Inc.) REISING, Joseph A. CM*. St. Joseph Lead Co., Zinc Smelting Div. Monaca. Pa. REISS. Max S. (E) 85 Howell St.. Canandaigua. M. Y. REMDE. Harry ?.. Jr. General Ceramics Corp. Keaswy, N. J. REMINGTON. Victor H. (GI) B. F. Drakcnfcld 4 Co., Inc. Box 519. Washington, Pa. REMMEY. G. 3ickley (RF) Richard C. Remmey Son Co. Hedlcy St. 4 Delaware River Philadelphia 37. Pa. REMMEY. John G. CR) Richard C. Remmey Son Co. Hedley St. 4 Delaware River Philadelphia 37, Pa. REMMEY. RICHARD C.. SON CO. (G. Bickley Remmey) Hedley St. 4 Delaware River Philadelphia 37, Pa. REM PES, Paul E.. Jr. (B JI) 5452 Mitcheil Dr.. Page Manor Dayton 3. Ohio (United States Air Force) "E N FR EW . J. Harvey (S) ,31 Linden Park St.. Roxbury 20, Mass. (Herman G. Proue) R N 0U F . Leonard J. (R) 342 Church St.. Youngstown, N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) Vol. 35, No. 10 (1956) RENSKERS, Richard H. (W li American-Standard Box 736, Kokomo. Ind. REPUBLIC STEEL CORP. (Burton Longwell) 1423 Republic Bldg. Cleveland 1. Ohio RESCHETZ. Raymond R. j 615J'j W. Park. Champaign. 11!. RESER. Margie K. 977 Carlisle Ave.. Coiumfcus II. Ohio (American Ceramic Society) RECNING. Charles R. <R> 545 Boulevard, Westfield, N. J. (National Reiractories Co.) REUNIXG. George \V,, Jr. (R li 279)4 E. Main St.. Frostburg. Md. (Big Savage Div., Mexico Reiractories Co.) REUSCHE. Frank L. (W) 60 Congressional pky., Livingston. X. J. (L. Rcuschc 4 Co.) REUTER. Raymond <R) National Aluminate Corp. 6216 W. 66 PI.. Chicago 33. III. REYNOLDS. Harry M. (G) Rcnite Co.. Box 565, Sta. A. Columbus. Ohio REYNOLDS METALS CO. (L. S. Beeler) 2500 S. Third St.. Louisville. Ky. RHOADS. James L. I BJ) 1410 Springside Dr., Lancaster. Pa. (Radio Corp. of America) RHODES. Foster T. (W ) Onondaga Pottery Co. Syracuse 4. X. Y. RHODES. Fraser B. (WFI1 7134 Maple Ave.. Madeira. Ohio (Briggs Manufacturing Co.) RHODES. Ralph E.. Jr. (M) United Clay Mines Corp. 101 Oakland St.. Trenton 6, N. J. RHODES. Rairh E. (?.?' 1729 Powell St.. Norristown. Pa. (E. J. Lavino 4 Co.) RHODES. William H. Box 327. Alfred. N. Y. RICCI. Edward Michael (R Ji) 317 Main St.. Dickson City. Pa. (Harbison-Walker Refractories Co.) RICE. George A. (W) General Electric Co. Campbell Ave. Plant. R n . 4$o Schenectady, X. Y. RICE. Hal H. (W I) 4SI Vinewood Ave.. Birmingham. Mich. (General Motors Corp.) RICE. Murray J. (B) Box 155. Alfred. N. Y. (State University of Xew York. College of Ceramics) RICE. William H. (G) General Electric Co. Glass Technology Laboratory 1133 E. 152nd St., Cleveland 10. Ohio RICH. David C. (G) Pittsburgh Plate Glass Co. Creighton, Pa. RICHARD, Giulio A. Via Cernuschi 1. Milano, Italy (Societa Ceramica Richard-Ginori) RICHARDS. Robert W. (S) Richards Brick Co. 234 Springer, Edwardsville. III. RICHARDS. Thomas Z. (R) 80 Maple St.. Greendale Sta. West Boylston. Mass. (Norton Co.) RICHMAN. Peter D. Box 746. Alfred. X. Y. RICHMOND. Joseph C. (E FI) 4823 Morgan Dr.. Chevy Chase 15, Md. (National Bureau of Standards) RICHTER. Charles J. (G) Box 275, Canfield: Ohio P.ICK, Clarence A. i.Ri Box 63. Columbiana, Ohio (K aiser Aluminum 4 Chemical Corp.) RICKER. Richard W. :!> Aluminum Co. oi America Alcoa Research Labs.. Box 772 New Kensington. ?a. RICKEY. Charles .1 iV.J) B. r . Draker.felJ 4 Co.. Inc. W ashington. Pa. RICKEY. J. H.. Jr. (HI Iror.tcn rire Brick Co. Box 536. lronton. Ohio RIDDLE. Frank K. (W FI) 14 Upland Rd.. Colorado Springs. Colo. (Champion Spark Plug Co., Ceramic Div.) RIDGEWAY. Thomas J., Jr. (R) General Refractories Co. Morrisville. Pa. RIEGERT. Richard ?. (I) Box 995, Alfred. N. Y. RIEPER. Gerald 394 Pam mel Ct.. Ames, Iowa RIGBY, James E. (G) Blue Ridge Glass Corp. Kingsport. Tear.. RIG TERIN X . Merie D. (3 F ) Beil Telephone Labs. M urray Hiil. N. J. BUS, 'Asgeir (M) Robeson Process Co. Box 960. Erie. Pa. RIKER. Leon W,, Jr. (G) II I Rebecca St.. Kittanning, I'a. (P ittsb u rg h Plate Glass Co.) RILEY. Roger R. (R) 1774 Dancsta Dr.. Concord, Calif. (Gladding. Mc3can 4 Co.) RINDONE. Guy E. (G) Department of Ceramic Technology Pennsylvania State University University Park, Pa. RINGEN. Robert E. (M) Pau! O. Abbe Co.. 143 Center Ave. Little Fails. N. J. S IS P L E S . Z. W. Palestine Glass Works "Phoenicia" Ltd., Box 168 Haifa. Israel RITLA X D . H arold X. (G) 14732 Sastgatc Dr.. Bellevue. Wash. (B oeing Airplane Co.) RITT. P. E. <W; 1325 S. George Mason Dr. A rlin g to n . Va. (Melpar. Inc.) RITTER. Joseph S. (G) Adamston Plat Glass Div., Rolland Glass Co., 3ox 631 Clarksburg, W. Va. R ITT LE R . H erm ann 12 X. Wayne St.. Phelps. N. Y. RITZ. Joseph W. (G) Sylvania Electric Products. Inc. 83-30 Kew Gardens Rd. Kew Gardens. L. L, X. Y._ - ROACH, H. C. (R ) American Radiator 4 Standard Sanitary Corp. 40 W. 40th St. Xew York 18. N. Y. ROBB. Richard 3. (G) 209 Vine St.. Pittsburgh IS, Pa. (U nited States Steel Corp.) ROBBIN S. M artin D. 86-15 E lm hurst Ave. Elm hurst. Queens, X. Y. ROBBIN S. Ross W.. Jr. (RJ) 31 May St.. Worcester, Mass. (N orton Co.) ROBERSON. Cletis L. (G) 350 Mooil St.. Newark, Ohio (Owens-Coming Fiberglas Corp.) ROBERTS. Gerald J. (S) Mineral Weils Clay Products, Inc. 203 X. W. Seventh St. Fort Worth. Texas R oster S9 JtJERTS. John Taggart >Ei-'l ) *19 Park Blvd. Glen Ellyn. 111. (Crane Co.I OBSRTS. John W. iS ) 320* Hawthorne Ave , Richmond 23, Va. (Southern Lightweight Aggregate Corp.i OP p RTS. Niervin rrarci (E.i . Carpenter Ave. /stwood. Tuckahoe 7. N. V. (dc Lackr.c: Helicopters. Inc. i .C 3E R T S O N . James A. (R l Westvaco Mineral products Dir. Box 337. Newark, Calif. '.0 8 E R T S 0 N , Jean M. (E) 3008 Roscdale Blvd.. Louisville 5. Kv. (American Radiator & Standard Sanitary Corp.) ROBERTSON, Leon F. (G) Brockway Glass Co., Inc.. Brockway, Pa. ROBERTSON. Randal K. <S> 906 University Tower Bldg. Montreal. Quc.. Canaila (Laprairie 3 rick 3c Tile. Inc.) ROBERTSON. R. Kenneth (Si 133 Thornton Ave. Mt. Royal. C'ue., Canada (Laprairie Brick 3c Tile, Inc.) R Q 3E SO N PROCESS CO. CAsgeir Riis) Box 960. Erie. Pa. ROBILLARD. Harvey J. (R) Exolon Co.. 1060 E. Niagara St. Tonawanda, N. Y. ROBINETTE, Oren. Jr. Box 2284, Ocmson College Sta. Clem son. S. C. ROBIN SON CLAY PRODUCT CO. (W . E. Robinson) Box 1070 65 W. Slate St.. Akron 9, Ohio ROBINSON. F. George (S) 500 S. Santa Fe Dr., Denver. Colo. (Robinson Brick 3c Tile Co.) ROBINSON. Gilbert C. ISF) Box 91, C cmson. S. C. (Clcmson College) ""MJINSON, Louis G. (E) 'Louis G. Robinson Labs. Box 761. Cincinnati 1. Ohio ROBINSON. Percy Burrtli Diamond Clay Co. Ltd. Hartshill. Stckc-on-Trcnt. England ROBINSON. Phiilip 23 pyntole Ave. Pymbie. N.S.W.. Australia (Gaiiard it Robinson Pty. Ltd.) ROBINSON, Richard E. iR l) Johns-Manviiie, Zelienopie, Pa. ROBINSON. Richard R. (SI) 2232 Parkway Blvd.. Alliance. Ohio (Alliance Clay Product Co.) ROBINSON VENTILATING CO. (J. L. Henderson. Jt.i Zelienopie. Pa. ROBINSON, W. E. (R) Robinson C ay Product Co. Bax 1070. $5 W. Slate St. Akron 9, Ohio ROBINSON. William L. 112 W. Sixth St.. Fulton. Mo. ROBSON. H. L. (G) 2 Water St,, Lewiston, N. Y. (Olin Mathicson Chemical Corp.) ROBSON, James T. (MFD Allied Engineering Division Ferro Corp., 4150 E. 56th St. Cleveland 5. Ohio ROBSON. William G. (R) Atomics International 21600 Vanowen, Canoga Park, Catii. ROCHE, L. C. (GF) Maryland Glaas Corp. 3147 Wicomico St., Baltimore 30, Md. ROCHESTER, Thomas W ,, Jr. (G) 210 Delevan Ave., Corning, N. Y. (Corning Glass Works) ROCHFORD. David S. Box 737. Allred, N. Y. Vgl. 3.*1, No. 10 (1955) ROCHOW. W. ", i.RFi Harbison-Walker Refractories Cu. 1800 Farmers Bank Bldg Pittsburgh 22. Pa. ROCKFORD BRICK it T ILE CO. (G. H. Galvin. Jr.) Rockford. Iowa ROCKWELL, Dale L. Missouri School of Mines Jackling Gym. Roila. Mo. RODEFER. Howard H. (G) Rodefer-Glesson Glass Co. Box 550. Beiiaire. Ohio RODEMOYER. William E. Box 197. Alfred. N. Y. RODMAN. Clarence J. (E) Box 809, Alliance, Ohio (Alliance Ware, Inc.) RODRIGUEZ. Alfonso F. (G) Vidriera Monterrey, S. A. Apartado 162. Monterrey, N. L,, Mexico RODRIGUEZ. A. R. (BI) 29 Pine St.. Frar.klinville, N. Y. (Hi-Q Div,, Aerovox Corp.) ROE. Lawrence A. (G) 234 Sheridan PI., Lake Blurt, HI. (International Minerals St Chemical Corp.) ROFF. Robert W. (M) Bell Operations 433 Birch P!.. Westfield. N. J. ROFF. W. Wallace fM) 14 Glcnside Dr., West Orange, N. J. (Whittaker. Clark 3t Daniels. Inc.) ROGATZ. Alvin (B) Matda Development Co. 214 Academy St.. Hampton, Vi. ROGERS. Edwin J. (W I) Scintilla Div. Bendix Aviation Coro.. Sidnev, N. Y. ROGERS. Gregory L. fR) 9500 S. Norwaik Blvd. Los Nietos. Calif. (Pacific Clay Products) ROGERS. Melvin F. (G l) 55 Goff St.. Corning. N. Y. (Coming Glass Works) ROGERS. Virgil L. (S'* Hebron Brick Co.. Hebron. N. D. ROGERS. William R. (R) Carborundum Co. Refractories Div.. Niagara Falls. N. Y. ROLXE. Herbert J. (I) Sociedade de Engenharia Industrial Rua Marconi. 33.8` andar Sao Paulo. Email ROLLMANN. Peter Emmaiaan 11. Baarn. Netherlands (Anker Emaiile Fabrieken N.V.) ROMANO. Pa.wntale J. fW) 1212 Cavalier Ln.. West Chester, Pa. (Foote Mineral Co.) ROMINE. Donald J. 606 S. Monroe St,, West Frankfort. 111. ROONEY. Thomas E.. I l l (R) Empire Fire Brick Co. 219 Murray. Fort Wayne. Ind. ROOT. H. Dean (W I) Westinghouse Electric Corp. K-70, Materials Engineering Dept. East Pittsburgh. Pa. ROOT. Lawrence L. (M) Stanford Pottery Inc. 40 S. 15th St.. Sebring, Ohio ROQUES, Rodney A. (W) Coors Porcelain Co.. Golden, Colo. ROSE. Ralph (RI) E. J. Lavino & Co. Box 29, Norristown, Pa. ROSENDALE. Robert H. (W) Dover Ceramic Co., Malvern, Ohio ROSENTHAL. E. K. (W) 234 Napoleon St. Playa Del Rey, Calif. (Metlox Mfg. Co.) ROSENTHAL. Ernst 246 Park West, Marble Arch London W. 2, England (Consultant) b ijo u .............. jrsd Gold St.. Apt. 5 L os A lam os. N. M. ROSENWINKEL. George O. 1R) North American Refractories 59 E. Van Buren, Chicago 5. 11!. ROSICLARE LEAD & FLUORSPAR MINING CO. (J. Blecheisen) Rosiclare. ill. ROSLUND. J. A. (R) Globe Brick Co., 3ox 765 East Liverpool, Ohio ROSS. Doraid W. (RFI) S929A Oakhurst ?L. St. Louis '.2. Mo. (Consultant! ROSS. Howard, il (EJ) R. R. 1. Kan. Fa. (Ferro Corp.) ROSS. John A. (G) Corning Glass Works. Corning, N. Y. ROSS. Stuart T. (B) 901 Brooklawn Rd. Birmingham, Mich. (Chrysler Corp.) ROSS-TACONY CRUCIBLE CO. (A. M. Johnson) Robbins it Milnor Sts. Philadelphia 35, Fa. ROTH. Harper D. (M) East River Rd., Grand Island, N. Y. (Harper Electric Furnace Corp.) ROTHERMEL. Joseph J. (G) Corning Glas Works, Research Lab. Coming. N. Y. ROUDABUSH, Henry L. (R) General Refractories Co. 3201 Fruitland Ave. Los Angeles 58. Calif. ROUDABUSH. Ned W. (R) 311 Candlcwood Rd.. Broomalt, Pa. (General Refractories Co.) ROUP. Rolland (W Fl) Globe-Union Inc. 900 E. Keefe Ave. Milwaukee 1. Wise. ROWE. Arnold E. (E) R. R. :. Nebo. N. C. ROWLAND. Donald A. (W) 3 Maple St.. Bath, N. Y. (W estinghouse Electric Corp.) ROWLAND. Richards A. (B) Exploration Sc Production Res. Div. Shell Development Co. 3737 3ellaire Blvd.. Houston 25. Texas ROWLAND. R. W. (BF) New Castle Refractories Co. New Castle. Pa. ROWLANDS. Robert R. (WI) Universal-Rundle Corp. Box 300, Redlands. Calif. ROY. H. N. Indian Ceramic Society Dept, of Ceramics Benares Hindu Univ. Benares, India ROY. James W. (B) West St.. Lenox. Mass. (General Electric Co.) ROY. Rustum (B) Pennsylvania State University 221 Mineral Sciences Bldg. University Park, Pa. ROYAL CHINA. INC. (B. L. Miller) Sebring, Ohio ROYAL. Herbert F. (W F) 84S Pilgrim Rd.. Birmingham, Mich. (Champion Spark Plug Co.) ROYAL COPENHAGEN PORCELAIN MANUFACTORY * THE FAIENCE MANUFACTORY ALUMINIA (Chr. Christensen) Smallcgade 4$ Copenhagen F., Denmark ROYER. Rene Ingenienr-Conseil (E.C.P.) 60. Sue DTssy, Vanves (Seine) France RUARK, . S. (G) Box 2041. University, Ala. (L'niversity of Alabama) R oster 91 R U 2 IO . D iego P. S? New York. Cubao O'jexon City. Philippines RUDD, Richard D. (Ml Carborundum Co. 3335 W. 47 St., Chicago 9, 111. RUE. Chari es V. (B I) 143 Lir.dsay Ave.. Tiffin. Ohio '.Sterling Grinding Wheel Co.) RU ECK EL. W alter C. (R F) Koppers Co.. Inc., Koppers Bldg. Pittsburgh. Pa. RUGG, Ormuad I. (G) 1361! Meyers Rd.. Detroit 27. Mich. (F o rd Motor Co.) RUGH, Kenneth A. (R) Garfield Refractories Co. Bolivar, Pa. RUH. Edwin (R) 789 F ruithurst Dr. P ittsburgh 34, Pa. f Harbison-W alker Refractories Co.) RUH. Robert (RJ) 162 Diana Ln., N., Fairborn, Ohio fW right Air Development Center) RUIZ. Jorge Martin (R) Amerex Ingenieros. S.A.. Ixtaccihuatl 6 flnsurgentes & Aguascalientes) Mexico II, D. F. RUIZ, Robert A. (R) 114 W. Hctne St.. Vandalia, Mo. (W alsh Refractories Corp.) RULON. Richard M. (G) Sylvania Electric Products, Inc. 60 Boston St.. Salem. Mass. RUSHMORE. Murray, Jr. (M ) Moore & Mutiger 33 Rector St.. Mew York 6, N. Y. RUSO. Felipe 3. fG) Galiano 109, Habana. Cuba (General Glass Equipment Co.) RUSOFF, Samuel (R) Basic. Inc. Maple Grove, Fostoria. Ohio RU SSELL. Charles K. (R) 13 Mars St.. Mexico. Mo. `A. ?. Green Fire Brick Co.) RUSSELL. Howard F. (E l) 3118 Woodworth ?1. Pottotvatomie Hills. Haxelerest. 111. ` Ingersoil Products Div., Borg-W arner Corp.) RU SSELL. Lesiie A. (Gi Hazel-Atlas Glass Co. Washington, Pa. R U SSE LL . Lewis E. 23 K irk Close, Oxford. England (U. K. Atomic Energy Authority) RU SSELL, Norman Keith (R I) 24 Longcorse Ln.. Paoli. Pa. (R ic h a rd C. Remmey Son Co.) RU SSELL, Ralston. Jr. (XFT) Dept, of Ceramic Engineering I2S Lord Hall. Ohio State University Columbus 10. Ohio RU SSELL. Robert G. (G) R. R. 2, Granville. Ohio (Owens-Corning Fiberglas Corp.) R U ST L E SS IRON CO.. LTD . (H . W hitaker) Lawkhoime Ln. Keighley, Yorks. England RYAN. D. Edward Curran Engineering. Ltd. Cardiff. Wales RYAN. Joseph D. (G) 3018 Middlesex Dr., Toledo 6, Ohio (Libbey-Owens-Ford Glass Co.) RYAN. L arry D. Box E. Gig Harbor, Wash. RYCKM AN. David A.. Sr. (W ) 40 S. Marion St.. Bloomville. Ohio " YDER, Robert J. 221 E. McCormick Ave.. Apt. 2 State College, Pa. RYLAND. H. W. (W) C o o n Porcelain Co. 600 Ninth St.. Golden. Colo. Vol. .35. N o. 10 (1956) RYNDERS. Gerald F. I 31 > National Bureau of Standards Div. 9.1. Washington 25, D. C. RYSHKEWITCH. Eugene (R) Kearfot: Co.. Inc. 142 Getty Ave., Clifton. X. J. S SADA, Patricio (E) Troqucics & Esraaltes S. A. Apartado Postal 371 Monterrey N. I_ Mexico SA G IN O R . S. V. (W ) Gladding, McBean at Co. 2901 Los Felix Blvd. Los Angeles 39, Calif. SAIBEL, Edward (G) Carnegie Inst, of Tecb. Schenley Park, Pittsburgh 13. Pa. SAILER. Edward (BJ) Radio Corp. of America RCA Bldg. 55-2, Harrison. X. J. SALEEBY. Edward C. (S) J. C. Steele & Sons. Inc. Box 951, Statesville, X. C. SALINAS. Mario (G) Montes Carpatos 625 Mexico 10. D. F.. Mexico (Viariera Mexico, S.A.) SALISBURY. Charles W. (G) R. R. 1, Wayne. Ohio (Kim ble Glass Co.) SALISBURY, William R. (W ) Lyndon Rd., Fayetteville, N. Y. (Onondaga Pottery) SALTMAN, Donald (R) 107 Bonito. Long Beach 2. Calif. fDouglas Aircraft, Inc.) S A M M O N S . Frederick C. (R ) General Refractories Co. 3247 Fruitland Ave. Los Angeles 58, Calif. SAMPSON. J. Leonard (G) Mahoning Glass Work. General Electric Co.. 403 N. Main St. Niles. Ohio SA M PSO N . John W . (M l L indberg E n gineering Co. Box 313. East Longmeadow, Mass. SAMSON. A. William (G) B. F. Drakcnfeld & Co. Inc. Box 519, Washington. Pa. SAMUEL. Donald G. CR) E- J. Lavino & Co. Box 29. Norristown. Pa. SANBORN. Paui H. (W) 2514-- 23rd St.. Parkersburg. W. Va. SANDERS. Clyde A. (M) American Colloid Co. Merchandise Mart, Suite 813 C hicago 54. 111. SANDERS. Herbert H. (D) 17926 Daves Ave.. Los Gatos, Calif. (San Jose State College) SANDERS. Loren D. (B JI) 1233 Delaware Ave.. S. W. Canton. Ohio (Ohio Brass Co.) SANDERSON. K. W. John G. Stein & Company. Ltd. Bonnybridge. Scotland SANDFORD. Per Johan Folke Chalmers Tekniska Hogskola Gibraltargatan 57. Gotcborg, Sweden SANDMEYER. Karl H. (RI) 908--87th St.. Niagara Falls. N. Y. (Carborundum Co.) SANDS. George Imperial Smelting Corp. Avonmouth. Bristol. England SANFORD. Elbert A. (E) 37S Oakridge Dr., Rochester 17, N. Y. (Pfaudler Co.) SAN MIGUEL BREWERY, INC. (A. Villa-Abrille) 1112 Aviles Manila. Philippines SANNER, R. Dean R. R. 1, Argenta, III. A N T . John A . (W ) Universal-Rundlc Corp. Mt. Vernon & O rchard St. Cam den. X. J. SA N TO M IER1. S. Lewis (W I) Box 8, Botkins, Ohio (Botkins Engineering) 5ARAKAUSKAS. Raymond 13) N ational Carbon Co.. Research Labs. Box 51)6. Cleveland 1. Ohio SA RG EN T. Edward C. (Ri Zirconium Corp. o( America Solon. Ohio SARRAF, Edward M. (R) 20001 Laurel Ave. Rocky Rive,- 16. Ohio (Harbison-W aiker Refractories Co.) SASAKI GLASS MFC. CO.. LTD. (Seiicki Tabata) 1.1-Chome Yokokawa-Bashi Sumida-ku. Tokyo. Japan SASTRY. B. S. R. Pennsylvania State University College of Mineral Industries University Park, Pa. SA U E R E IS E X , C. Fred (M) Sauereisen Cements Co. Sharpsburg Sta., Pittsburgh 15. Pa. SA ULS. J. B. (M I) Funkhauser Co., 138 W. Washington St. Hagerstown, Md. SA U N D ERS. Alfred C. (R I) Eckhardt Rd., Hamburg, X. Y. (Electro Refractories & Abrasives Corp ) SAUNDERS. Hollis S. (E ) O. Hotnmel Co.. Box 475 Pittsburgh 30, Pa. SA U N D ERS. R. H. fS) Charleston Clay Products Co. Box 349, Charleston 22. W . Va. SA U N D ERS. Richard A. (S) 2626 Larwood Dr.. Charleston. \V. Va. 'Charleston Clay Products Co.) SAVELL. Fred H. (M) W estern Talc Co. 1901 E. Slauson Ave. L os A ngeies 58. C alif. SAYIOLI. Francesco Istituto Siderurgieo Finsider Villa Brignole-Corso F. M.. Perrone. 24 Genova-Comigiiano (Italia) SA W A I. lieutaro Kyoto University. Kyoto. Japan SA W Y ER. E. C. (W ) Central Silica Co., 306 Market St. Zanesville. Ohio SAXE. Charles W. (R) 1 W awecus Rd.. W orcester 5. Mass. (N orton Co.) SA X O N B U 8 G CERA M ICS (George H. Aderhold) Box 100 Saxonburg, Pa. SCA LES. John B. (B I) 456 L ynn Dr.. Berea. Ohio (U nited States Stoneware Co.1 SCHAA. Ferdinand A.. Jr. (W J) 84 Paumanake Ave.. Babylon, N. Y. (Sylvania Electric Products Inc.) SCHAAL. Frank W.. Jr. (W ) B. F . Drakenfeld & Co.. Inc.. Box 519 Washington, Pa. SCHA BACKER. H. Eric (E) E rie Ceramic A rts Co. 3120 W. 22nd St.. Erie, Pa. SCHAEFER. Carl F. (W ) 327 Sheffield Ave.. Flint, Mich. fA. C. Spark Plug Div. General Motors Corp.) SCHAEFER. Earl F.. II 102 E. Chalmers, Champaign, III. SCHAEELE. Max Thayngcn/SH , Switxcrland (Tonwerke Thayngen A. G.) SC H A FE R . C. B. (G) Libbey-O w ens-Ford Glass Co. 1701 E. Broadway, Toledo 5. Ohio R o ster 93 SCHAXER. 3 r:o n E . (BJ) Westingnuuse Electric Corp. Box 14(18. Pittsburgh JO, (V SCHATZXIN. Harvey (W ) Architectural Tiling Co. Inc. Cass/Jackson Sts.. Keyport. X. J. SCHAL'SS. Edward P. (C) j 1253 Eleanor Ave,, Toledo 12. Ohio (Owens-Illinois) SCHELL, Donald C. (E) 2227 S. Cundcrson, Berwyn, 111. (Armour Research Foundation) SCHIEFFERLE. James A. (E) 4501 Station Rd.. Ashneld Acres Louisville 5, Ky. (General Electric Co.) SCH IEN E. Quentin J. (R) 7614 Kingston Ave.. Chicago 49, III. (United States Steel Corp.) S C H IF F E R L I. Leo M.. Jr. (R) 2001 W estm oor Dr.. Kokom o, Ind. (H aynes Stellite Co.) SCH LEG EL. Roland F. Rua lnglaterra 233. Sao Paulo, Brazil SCHLEHR. W. Raymond (GI) Brockway Glass Co., Inc. Lapel, Ir.d. SCHLOEMER. Hermann Mincralog. Institution of Univ. Tuebingen, Bism arkstr. 50 Tuebingen. Germany SCHLOTZHAUER, Leon R. (R) R.R. 2. Painted Post. N. Y. (Corning Glass Works) SCHMID. Arthur W. (G) A rthur W. Schmid Co. 1414 Investment Bldg., 239 Fourth Ave. Pittsburgh 22, Pa. SCHM ID. Robert L.. Jr. (R) 125 Croitley Rd., Shetland Hills Lutherville. Md. (Aluminum Co. of America) SCHM IDT. Beuther L. (R) Anchor Hocking Glass Corp. Lancaster. Ohio SCH M IDT. William G. (S) Box 469, Altam ont. X. Y. 'G eneral E lectric Co.) SCHMUNK. Louis (W) 70 Dunecin Dr. T oronto 13, O nt.. Canada (American Radiator & Standard Sanitary of Canada) SCHNEIDER. LaVoy H. (E) 5 Maple Ct.. Ham ilton Ohio ( Ferro Corp.) SCH N EID ER. Matthew ?.. Jr. <S) 2543 Louisa St., Siidell, La. (St. Joe 3rick Works. Inc.) SCH N EID ER. Samuel J.. Jr. (RJI) 3336 Lancer Dr., West Hyattsvillc, Md. (N ation al Bureau of Standards) SCH OELLKO PF. Robert S. (W ) Carborundum Co. of Puerto Rico Box 1147. Mayaguez. Puerto Rico SCHOENINGER. Irvin W. (W I) S2S0 N. Shoreland Ave. Milwaukee 17. Wise. (Globe-Union Inc.) SCHOENLAUB. Robert A. (R) Harrop Ceramic Service Co. Box 5338. Shepard Sta. Columbus 19, Ohio SCHOEPPEL. Norman (RI) 10 Elm Tree D r,, Mexico, Mo. (A. P. Green Fire Brick Co.) SCH OFIELD. H. Zane (W FI) K oppen Co.. Inc., Research Dept. K o p p e n Bldg., Pittsburgh 19, Pa. SCHOLES. Addison B. (G) Interlectric Corp., Warren, Pa. SC H O L E S. S. R. (GF) Bog 752. Alfred. N. Y. (State U nivcnity of New York College of Ceramics) SC H O L S. Leon V. F. M. St. Lambcrtuslaan 4a M aastricht. Holland (Regout-M atthey) V ou 35. No. 10 (195G1 SCHOONOVER. I. C. i 3 ' National Bureau of Standards Washington 25. D. C. SCHOTSMAN. J. Kruisstraat Jl. Diercti. Netherlands (N. V'. Enamei W orks "de Yssei") SCHOTTLAND. A. H. (G) Standard 3en: Glass Co., Butler, Pa. SCHOTTS. Walter K. (MFD 23 E. Southington Ave. Worthington, Ohio (Harrop Ceramic Service Co.) SCHRADER. David M. (R) 742 Rotch Ave.. Massillon, Ohio (Republic Steel Cc-p.) SCHRAMM. Edward (W F) Onondaga Pottery Co. Syracuse 4, N. Y. SCHRECKENGOST. Don (D F) 2617 St. Clair Ave. East Liverpool, Ohio (Homer Laughlin China Co.) SCHRECKENGOST. Viktor (D) 2265 Stillman Rd. Cleveland Heights 13. Ohio (Salem China Co.) SCHRE1BER. Edward Box 948. Alfred. N. Y. SCHRICKEL. Herman H.. Jr. (G) 178 E. Pulteney St.. Coming. N. Y. (Coming Glass Works) SCHROEDER. Fred W. (RFI) N orth American Refractories Co. 1012 National City E. Sixth Bldg. Cleveland 14. Ohio SCHROEDER. Herbert S. (R) 6 Conover Ln., Red Bank, X. J. (Carborundum Co.) SCHROLL. J. R. (S) Manufacturers Equipment Co. 213 Madeira Ave.. Dayton 4. Ohio SCHUCK. John F.. Jr. (W I) R.R. I, Apple Creek. Ohio (Alite Div., U. 5. Stoneware Co.) SCHUETZE. Ervin W. (R) 23 Rock Springs, Mexico, Mo. (A. P. Green Fire 3rick Co.) SCHUH. Arthur E. (R) United States Pipe Foundry Co. Burlington. N. J. SCHULHOF. Andres Lozadur. Grandes Fabricas Argentina* de Ceramica. S. A. Boulogne. F.C.N.G.B. Buenos Aires. Argentina SCHULTZ. Donald G. (S) 3119 W oodworth. Hazelcrest. 111. (Chicago Brick Co.) SCHULTZ. James 3 . (G) 1321 E. Robinson St. North Tonawanda. N. Y. (National Gypsum Co.) SCHULTZ. John. Jr. (EJ) Battdle Memorial Institute SOS King Ave.. Columbus 1. Ohio SCHULZE. Robert H. (X) Advanced Vacuum Products. Inc. 22 Liberty St.. Stamford, Conn. SCHUMACHER. William G. (E ) S9S6 N. Glenwood Ave. Chicago 40, 111. (National Cylinder Gas Co.) SCHURECHT. H . G. (W FI) Champion Spark Plug Co. 8S2S Butler Ave.. Detroit 11, Mich. SCHURTZ, D. D. (GF) Sharp-Schortz Co. 301--303 Lincoln Ave. Lancaster. Ohio SCHWAB. Leon B. (R) 214 E. Home St.. Vandalia. Mo. (Harbison-Walker Refractories Co.) SCHWARTZ, Bernard (BI) 35 Dogwood Dr.. R. R. 2 Downingtown. Pa. (International Resistance Co.) SCHWARTZ. Jerome W. (W) Sascha 3rastoif Products, Inc. 11521 W. Olympic Blvd. Los Angeles 54, Calif. SCHWARTZ, M. A. ( BI) WCRRL. Aeronautical Research Lab. W.A.D.C. W'right-Paiterson A rB , Ohio SCHWARTZW ALDER. Karl (W F I) A C Spark Plug Div.. General Motors Corp. Flint 2. Mich. SC H W E 'CKHARDT. William K. (R) Walsh Refractories Corp. 101 Ferry St., St. Louis 7. Mo. SCHW EITZER.^ Howard V. (M) Schweitzer Equipment Co. 3764 Ridge Rd., Cleveland 9. Ohio SC H W E N K LE R . Edward P. 979 Grove St., Elmira, N. V. SCHW ENKLER, Theresa A. (G) 979 Grove St., Elmira, N. Y. (Coming Glass Works) SCHWIETE. Hans-Ernst Institut fur Gestetnshuttenkunde M auerstrasse 5. Aachen, Germany SCOTT. J. W. (W) Western Electric Co. Inc. 7650 Hawthorne Station Chicago 23, ill. SCOTT. Murray R. (GFI) Bausch & Lomb Optical Co. 635 St. Paul St., Rochester 2. N. Y. SCOTT. Robert M. (R I) 4619 Druid Ln., Dayton 9, Ohio f Norton Co.) SCOTT. Roger F. (GI) 911 E. Main St.. Millville. N. J. (Armstrong Cork Co.) SCOTT. Roland F. (S) ' Brazil Public Library Brazil. Ind. SCOTT. W. J. (W ) Western Electric Co. Inc. 2525 Soadeland .-.ve. Indianapolis 6. Ind. SCOTT. William D. 7707 Water St.. Olrostead Falls. Ohic SEA 3RIG H T. Clarence A. (M) 2201 W ascana Ave.. Lakewood 7. Ohio (H arshaw Chemical Co.) SEA BRIGHT. Edward C. (E ) 171 Beuiand. Mt. Clemens. Mich. (Philco Corp.. Range Div.) SEANOR. J. G. S ' 2300 W. Tuscarawas St. Canton 3. Ohio (Bonnot Co.j SEARCY. Alan W. (B) Division of Mineral Technology University of California Berkeley 4, Calif. SEARLE. Alfred B. 62, Moorcliffe, Skircoat Moor Rd. Halifax, York, England (Consultant) SEARSON. Leslie - - ' James Oakes 6c Co. (Riddtngs) Ltd. Jacksdalc. Notts, England SEATON, Max Y. (R F) Food Machinery 8c Chemical Corp. 161 E. 42nd St.. New York 17. N. Y. SEBRIXG. George F. (W I Paper Makers Importing Co.. Inc. 44 S. Second St.. Easton. Pa. SECKMAN. H arry D. (W I) 220 W. Third. Peru. lad. 1 (Square D Co.) SECORD, Robert N. (W ) Godfrey L. Cabot, Inc. Research it Development Dept. 38 Memorial Dr., Cambridge 42, Mass SEDENXA. Anthony (E) 1086 M agnolia Dr.. W ashington. Pa (B. F. Drakenfehl 8: Co.. Inc.) SEELEY. E. L. (W ) 800 Lotus Ave.. Chester. W. Va. (H arker Pottery Co.) R oster 9.; SEEMANN. Wilhelm Pipersgattin i, Stockholm, Sweden SEGELER. C. G. (M> American Gas Assn., 420 Lexington Ave. New York 17. N. Y. SEIDEL. Joseph l\V) 1233 E. Orange St.. Lancaster, Pa. / Radio Corp. oi America > rS L . Robert B. :,G: Blue Ridge Glass Carp. Kingsport. Tenn. SEITZ. Woiiram (Gi Glass Containers ir.c. 3601 Santa Fe Ave. Los Angeles S3. Caiit. SELLERS. George A. (R) 31S E. Crescent Ave.. Elmhurst. 111. (Plibrico Co.) SELLERS. John T. <RI> 32 Broadway, Jackson, Ohio (Durex Refractories Co.) SELSING. Jorgen (B> 1316 Noble Sc., Barberton. Ohio (Ohio Brass Co.) SEMMELMAN. John O. (W t) Dentists Supply Co. of New York College & Grar.tley Ave., York. Pa. SEMPLE. John Metal Porcelains Ltd. Incandescent Heat Group Cornwall Rd. Smethwick, Staffs, England SEM PLE. William A. (R ) Aluminum Co. of Canada, Ltd. Gen. Tech. D ept, 1700 Sun Life Bldg. Montreal. Que.. Canada SENK, Johann Vienna XVII Dornbacherstr. 29. Austria (Radio Fabrik ingeienPorzellan Fabrik) SENTERS. Walter (S) Washington Brick Lime Co.. Box 2198 Spokar.e. Wash. SENTRY SANITARY CORP. t Marvin E. Abram s) Box 427 Mannington. W. Va. .PHTON . H. J. (G) Dominion Glass Co. Ltd. Chappie St.. Hamilton. One.. Canada SERVICE PORCELAIN ENAMEL. IN C (Paul 5. Cecil) 3rill 3c Christie Sts. Newark 3. N. J. SERVIS. Donald H. <\Y) Robertson Mfg. Co.. Box 343 Trenton S. N. J. SESLER. E. Clyde. Jr. (S) 1329 Alexander Circle. Pueblo. Colo. (Sum m it Pressed Brick 3c Tile Co.) SETCHEL. Hayden Merritt (G) 105 Tenth St.. Streator, ill. (Ow ens-Illinois) SEVERIN. Harold Box 737, Alfred. N. Y. SEVERSIKE. Carroll L. (W) 2J Race St.. Frenehtown, N. J. (Frenchtow n Porcelain Co.) SEYBERT. Earl K. (R) Davison Chemical Co. Div. W. R. Grace 3c Co. 101 N. Charles St., Baltimore 3, Md. SEYMOUR. Samuel L. (G) 26 Crystal Dr.. Oakm ont. Pa. (Pittsburgh Plate Glass Co.) SHAFFER. E. F. (G) Ohio Power Co., Newark, Ohio SHAFFER, Paul C. (G) 83 Chapel S t- Seneca Fails, N. Y. (Syivania Electric Products, Ine.) SHAH, Chunilal P. Bombay Potteries 3c Tiles Ltd. Pipe Rd.. Kurla. Bombay 37, India ALEX. Peter D. (\V) S26 Lake St.. Oak Park. 111. SHAND. Errol B. (G) 133 Reynolds Ave., Corning, N. Y. (Corning Glass Works) Vol. 35. N o. 10 (1056) SHAND, Rodger L. <F. I 230 Woodate Rd. Oakville. Ont.. Canada (Ferro Enamels (Canada) Ltd.)- SHANDS. Everett H. (E) 1930 Harlem Blvd., Rockford. 111. (O. Hommcl Co.) SHa NER, Herbert J. (R) Ramritc Co.. 2563 W. ISih St. Chicago 3. 111. SHANKS. Douglas Shanks Co. L:ii.. Victorian Pottery Barrhead. Near Glasgow. Scotland SHANNON, Harry F. (E) United States Steel Corp. Applied Res. Lab.. Monroeville. Pa. SHAPIRO. Howard (BI) 1410 East Ave., New York 62. N. Y. (Syivania Electric Products, Inc.) 5HARDLOW . L. Russel (BI) Radio Corp. oi America Harrison, N. J. SHARP, Donald E. (GF) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 3, Ohio SHARP. F.. W. (R I) Pedro, Ohio 1Lawrence Refractories Clay Co.) SHARPE, Edwin F,, III 2255 Kennedy St.. Fhiladeiptva 37. Pa SHAVER. Richard C. (B) 2 Hamilton St.. Auburn. X. Y. (Cowles Chemical Co.) SHAVER. W. W. (GF) 130 E. Fourth St.. Corning, N. Y. (Corning Glass Works) SHAW, Anthony E. (S) Natco Corp.. 327 Fifth Ave. Pittsburgh 22. Pa. SHAW, Clarence F. (W I) R. R. 1. Trevor. Wise. (Pickard, Inc.) SHAW, L. I. (X I) Qub DelMar. Santa Monica. Caiit. (Consultant) SHAW, ily ril C. (M FD 563 Gates St., Philadelphia 33, Pa. (Asbestos Textile Institute) SHAW. Ronald H. (S) L. E. Shaw Ltd.. Box 994 Halifax, Nova Scotia SHAW. Ronald R. 137 Inglis St. Halifax. Nova Scotia, Canada SHAYXA. Michael iS) S06 S. Railway St. Swift Current. Sask.. Canada (Perry Brick 3c Tile Co.) SHEARER. Walter L. (R) Bartley Crucible Sc Refractories. Inc. 15 Muirhead Ave., Box 353 T renton 3, N. J. SH E A R E R . W ayne B. (E ) 27 Fairview Rd.. Paoll. Pa. (Foote Mineral Co.) SHEAROUSE. Lee A. (W ) 326 Highland Avc,, Wadsworth, Ohio (Ohio Brass Co.) SHEEHAN. Robert W. (WJ) Box 38, Saxonburg, Pa. (Du-Co Ceramics Co.) SH EETS. Herbert D. (R I) Baitelle Memorial Institute 503 King Ave., Columbus 1, Ohio SHELDON. John L. (G) 179 Dodge Ave., Corning, N. Y. (Com ing Glass Works) SH ELDO N. R. S. (E ) 221S Wilson Ct., St. Joseph, Mich. (W hirlpool-Seeger Corp.) SHELL. Haslciel R. (B) U. S. Bureau of Mines Electrotechnical Experiment Sts. Norris, Tenn. SHELLEY. C. 3. (R I) General Refractories Co. 1520 Locust St., Philadelphia 2. Pa. SH ELTO N . Philo S. (GJ) 130 Burr St,, Fairfield. Conn. SHENANDOAH SILICA CO.. INC. (Herreic D. Thropp) 190 W. S a te St., Trenton S. N. J SHENANGO CHINA. INC. (Geo. B. Zahmser) New Castle. Pa. SH EPHERD. John F. (E l) Shepherd Chemical Co. 2303 Highland Ave. Norwood, Cincinnati 12, Ohio SHERK. Donald (M) 213 Dalton Dr., Butfalo 23, X. Y. (National Gvpsum Co.) SH ERM ER. Kerm an F. (G> 740 N ortham pton Dr. Sliver Spring, Md. (United States Naval Ordnance Lab.) SHERRILL. Ernest (M) Westwood Ceramics Supply Co. 11230 W. Pico Blvd. Los Angeles 64, Caii(, SHERRILL. Robert R. (E l) 42S Car.von Dr.. Glendale 6. Call!. (Bulwark Corp-) SH ERW OO D. Robert F. (W F I) Ford. 3aeon & Davis United Slates Operations Mission A.P.O. 74. 3ox K, c /o P.M. San Francisco. Calif. SHEVLIN. Thomas S (R I) Engineering Experiment Station Ohio State University Cotumous 10, Ohio SHIELD. Richard (WJ) 131 W. Harris. Apt. 7 San Angelo. Texas SH IFF. Tom (R) Villa Ridge Addition, R. R. 2 Godfrey. 111. (L a clcd e-C h risty C o.. (Div. H. K. Porter Co.) SH1MADA. Hachiro Shimada Glass Laboratory No. .2367. 1-Chome. Sanno Ota-ku. Tokyo, Japan SHIMADA. Xuro Toyo Glass Co.. Ltd. No. 47 Shimo-j-Chome Fukuinitnaku. Osaka, Japan SHIMER. J- B. (G I) Knox Glass Co. Knox. Pa. SHIM M AN. Norm an C. (M) 2348 Ventura Dr.. R. R. 4 Walled Lake. Mich. (Champion Spark Plug Co.) SH IN N . Joseph M.. Jr. (R ) 1908 Ramblewood Rd., Apt. D Baltimore 14. Md. (W estern E lectric Co.) SH IPE. Paul J. (R) Moraine Prod. Div.. General Motors Corp. 1420 Wisconsin Blvd., Dayton 1. Ohio SH IPL E Y . Linden E. (W ) 92 Crcstview Rd., Columbus 2. Ohio (O rton Ceramic Foundation) SH IPLEY . R. A. (S) - ' Natco Corp., 327 Fifth Ave. Pittsburgh 22, Pa. SH IPP Y . Gordon D. (E ) 2720 W. Chambers. Milwaukee, Wise. (A. O. Sm ith Corp.) SHIVELY, R. R. (GF) 83 Woodland Dr., Pittsburgh 28, Pa. (Omsultaut) SHIVELY. Robert R.. Jr. (GI 2416 Gulf Bldg., H ouston 2, Texas (O tin Mathieson Chemical Corp.) SHOEMAKER. George W. (S) Arkctex Ceramic Corp.. 6 N. Walnut St. Brasil. Ind. SH O FFN E R . Jam es E-. Jr. (G) 118 Cherokee Rd., Nashville 5. Tenn. (Ford Motor Co.) SHOFSTALL. X. F. (M) General Electric Co. 1311 LeMoyne Ave.. Syracuse, N. Y. Roster 97 SH ON EH AHO EK. r . J. (0 ) General Electric Co. Glass Technology Lab. 1133 E. 152nd Sc., Cleveland. Ohio SHOXKW ILER. Francis P. (R!) 2516 Mtlfcrd Dr., Pittsburgh 5a, l'a. t Harbison-Walker Refractories Co.i OOK, T hurston \V. (M) 2569 M eV ey B lvd.. \V. W orthington. Ohio (H arrop Ceramic Service Co.,' SHOOK, William 3. (I) 434 Chatham Sd.. Columbus 14. Ohio SHOOT, Lyle E. (W J) Box 491, State College, Fa. (Erie Resistor Co.) SH O PH E R . Sterling D. (R I) 1120 E. Jackson. Mexico. Mo. (Mexico Refractories Co.) SHORTER. A. J. Bonnybridge Silica & Fireclay Co. Ltd. bonnyaruige. Stirling, Scotland SHORTER. W. H. (C) Enthrt Manufacturing Co. 333 Homestead Ave., Hartford 2, Conn. SH REM ?, Raymond M. (R) 227 S. Clay St., Zeiienople, Pa. (Lava Crucible-Refractories Co.) SHUMAN. Albert (C) Polarizing Instrument Co. Irvington-on-Hudson, New York, N. Y. SICKER. Richard 97 Park Ave.. East Orange, N. J. SID D IQ I. Iftikhar A. 4233 12th N. E.. Seattle 5, W ash. SIDWELL, John L. (M) H. C. Spinks Clay Co.. Inc. 1000 First National 3ank Bldg. Cincinnati 2. Ohio SIEBACH, Ralph E. 131 Rebecca St.. K ittanning, Pa. SIEBER. Karl E. (G) Corning Glass Works. Albion. Mich. SIEBERT. Robert (S) Dennings P o n t 3rick Works, tnc. ' Box 150. Beacon. N. Y. tSF E R T . A. C. (G r) Ower.s-Cornir.g Fiberglas Corp. Newark, Ohio SISGW ALD, Clyde R. (W I) 4422 San Carlos Ave., Tampa. Fla. (Tiffany Tile Co.) SIEXM ANN. John F. (R> Aluminum Co. of America 523 N. Michigan Ave.. Chicago 1], III. SIEVERT, Guio E. tR) 833 Oregon Ave.. San Mateo, Calif. (Gladding, McBcan Ic Co.) SIGW A3T, Harry J. (G) 732 Beechurst Ave. Morgantown. W. Va. (Seneca Glass Co.) SIKES. James W. (W ) Florida Tile Industries. Inc.. Box 451 608 Prospect St.. Lakeland. Fla. SILK. Karl Messrs. Jury Holloware Lid. Brierley Hill. Starts. England SILVERMAN, Alexander (G FI) University of Pittsburgh 2525 Cathedral of Learning Pittsburgh 13, Pa. SILVERMAN. William B. (G FI) Owens-Illinois. Technical Center 1700 X. Westwood Ave.. Toledo 1, Ohio SIMA VILLA. Juan M. Cristaferias Rigolleau S. A. Berazatequi, F.CN.G.R. Buenos Aires. Argentina SIMCOCK. H. J. "Cranford," Lovatt Ave. Milehouse. Newcastle Stafford. England 5IMISON, A. L. (C l) Owens-Corning Fiberglas Corp. Toledo. Ohio SIMMEN. Fred G. (W) 96* Terrace Blvd.. Trenton 8, N. J. (Falrfacts Co.) Vol. 35, No. 10 (1956) SlMMl.NGiK.OLD, Bo Glasinstitutet i Vaxjo, Smedjcgaian 3 Vaxjo, Sweden SIMMONS, E. E,, Jr. (M) 455 S. Oakland Ave., Pasadena 5. Calif. (Consultant) SIM MONS. George A.. Jr. (Gi Pittsburgh Plate Glass Co. Res. Labs.. Creighton. Pa. SIMMONS, Miitor. L. (E ) Ferro Corp.. International Div. 4150 E. ittth St.. Cleveland 5. Ohio SIMON. A. G. (W) 8530 Wentworth St., Sunland, Calif. (Gladding, Mc3ean 3c Co.) SIMONDS WORDEN W HITE CO. (F. R. Henry) 1101 Negiey PI. Dayton 7, Ohio SIMONS. T. Mitchell. Jr. (W I) 9136 E. Jaylee Dr. Temple City, Calif. (3 . F. Wagr.er Si Co.) SIM ONSEX . Eduardo C. Companhia Paullsta de Mineracao Caixa Postal 3008. Sao Paulo. Brazil SIM ONSEX, Victor G. Ccramica Sao Cactano S. A. Caixa Postal 273. Sao Paulo. Brazil SIM ONSON, Robert B. Harvey Aluminum Co. 190th 4 Western. Torrance, Calif. SIM PSON. Frederick H. (EJ) 1321 W. 51st.. Seattle 7, Wash. (Boeing Airplane Co.) SIM PSON. Harold E. (GFI) State University of New York. College or Ceramics. Alfred. N. Y. SIM PSON. John A. (S) F. B. McFarren Ltd. Streetsvillc. Ont.. Canada SIM PSON, John D.. Jr. (S) Statesville Brick Co.. Box 471 Statesville, N. C. SIN CERE. John F., Jr. (EJ) 3325 W. Henderson Ave. Chicago 41, 111. (Industrial Publications. Inc.) SIN CLA IR. Robert R. (RI) 510 S. Osage Ave., Inglewood. Calif. (Missouri Refractories Co.) SINGER. Felix (F) Keramos House. 4$, Castlemaine Ave. South Croydon, Surrey. England (Consultant) SIQL'EIRA. Pedro M. Ceramics Sao Caetano S. A. Rua Boa Vista 34-6* Sao Paulo, Brazil SIROVY. George (E) Century Vitreous Enamel Co. 6641 S. Narragansett Ave. Chicago 38, 111. SISKA. Albert H. (E l) 822 Ellis Ave., Ashland, Ohio (Ferro Corp.) SISSONS. Gordon H. (S) 320 First St. Medicine Hat. Alta. Canada (Medicine Hat Brick & Tile Co., Ltd.) SIX T. Lawrence F. (W) Cain St., East Liverpool, Ohio (New Castle Refractories Co.) SJOGREN, John K. (R ) Prospect St., Princeton. Mass. (Norton Co.) SK EO CH , Thomas A. 608 Second St., Golden, Colo. SK EO CH . Walter K. (M) Southern California Minerals Co. 320 S. Mission Rd. Los Angeles 33. Calif. SK IN N E R . Kenneth G. (R I) 4223 First St.. S. E.. Apt. 203 Chesapeake Gardens W ashington 20. D. C. (Naval Research Laboratory) SKOGEN. Haven S. (G) 2524 N. Dora, Franklin Park. III. (E. I. du Pont de Nemours & Co.) S K U R C E N SK 1, Anton G) H. I. Thompson Fiber Glass Co. 1733 Cordova St., Los Angeles 7, Cali:. SKWARLO. Edward (G) 706 S. loka, Mount Prospect, 111. (Vacuum Ceramics, Inc.) SLAUGHTER. James A. (G) Pittsburgh Plate Glass Co.. Box 15 Crystal City. Mo. SLAUGHTER, John I. (3 ) Corning Glass Works Res. 4 Development Div. Com ing, N. Y. SLAYTER. Games (GF) Owens-Coming Fiberglas CorpCase Ave., Newark. Ohio SLICK, E. E.. Jr. (R) Haws Refractories Co., 407 Main St. Johnstown. Pa. SLUSS, Olen R. (W) Claiborne Towers. Rm. 1025 New Orleans, La. (A m erican -S tan d ard ) SLYH. John A. (BF!) American Encaustic Tiling Co.. Inc. Lansdale, Pa. SMALL. Carlton F.. Jr. (RJ) 9 Hawthorne Rd., Cinnamon Hill Bridgeport, Pa. (E . J. Lavino 4 Co.) SMALLEY. Howard F. (E l) Pemeo Corp.. Research Div. 2554 Greer.mount Ave. Baltimore IS. Md. SMELT. J. A. M. Bibliotheekcentrale N. V. Philips* Gloeilampenfabrieken Eindhoven, Holland SMITH. Adrian F. (G) 86 E. Third St.. Coming. N. Y. (Corning Giass Works) SM ITH. Alden J. (W ) R. X. 5. Carey. Ohio (Porcelain products Co.) SM ITH .` ten M. Box 70-105. Havelock. N. C. SM ITH. A. O., CORP. (W. A. Deringer) 3533 N. 27th St.. Milwaukee 1, Wise. SM ITH. Arnold N. Pilkington s Tiles Ltd. Clifton Junction. Manchester, England SM ITH. C. A. (R F!) Mexico Refractories Co. Better Refractories Bldg., Mexico, Mo. SM ITH. Dudley C. .*G) Oakdale Dr.. Millville. N. J. (Kimble Glass Div.. Owens-Illinois) SM ITH. Earl R. (G) Pittsburgh Plate Glass Co. W orks No. 25, Greensburg. Pa. SM ITH. Ellis E.. Jr. (3 ! S27 North St.. East Aurora. N. Y. (W hittaker. Clark 4 Daniels. Inc.) SM ITH. Gail (G) C om ing Glass Works, Corning, N. Y. SM ITH. G. Sherwood Department of Ceramic-Technology Pennsylvania State University University Park. Pa. SM ITH. Harlan D. (R) Wellsville Fire Brick Co. WeUsville. Mo. SM ITH. Harry W. (W) Old Town Rd,, Shelton, Conn. (American Lava Corp.) SM ITH. Herbert A. (D) Palm. Feebteler & Co., Box 750 East Liverpool, Ohio SM ITH. Hillard A. (W I) 28 Buchanan Rd.. Metuchen, N. J. (Rbeem M anufacturing Co.) SMITH. Howard J. (W) 51 Godwin Ave., East Paterson. N. J. (Titanium Alloy Mfg. Div., National Lead Co.) SM ITH. H. Russell (M) Box 757, East Liverpool. Ohio (Croxall Chemical 4 Supply Co.) R oster 99 SM ITH, Jane* (. nited Fireclay Products. Ltd. 1-0 W George St. Glasgow C. 2.. Scotland SM ITH . James N.. Jr. ID) "A rboriaen". R. R. 3. New Bern, X. C. New Bern High School/ itlTH. J. Ernest (X) 2J3 R ivena Ae., Sarasota, Fla ( Ceram-.-Cast Cor? . SM ITH. John Jacob (O ' 143a Pacine Ave.. 3rackenridge, Pa. i Pittsburgh Plate Glass Co.) SM ITH, J. Ryan. (W) Fairfacts Co.. Fairfacts St. T renton 3, N. J. SM ITH . J. Talbot (M) JI7 Elm Ave., Morrisville. Pa. t United Clay Mines Corp.) SM ITH. Karl W. (R) Charles Taylor Sons Co. 3ox 53 Annex Sta. Cincinnati 14. Ohio SM ITH. Kenneth E. (D FI) A.merican Art Clay Co. 471? W. 16th St. Indianapolis 44, Ind. SM ITH. Leiand (SI) Sox 294, Darlington. 3eaver Co.. Pa. (Central Commercial Co.) SM ITH. Peter W. (W) Gladding, MeBcan & Co. 2991 Los Felia Blvd. Los Angeles 39, Calif. SM ITH. Ralph Ogden (G) 30 Chestnut St.. Salem, N. J. (Gayner Glass Works) SM ITH . Richard D. (I) Ferro Corp.. Far East Div. 1.(0 Nathan Rd.. 205 princess Bldg. Kowloon. Hong Kong SM ITH. Richard M. (R) 215 Seneca St.. Coming. N. Y. i Coming Glass Works) S M IT H . R. K. (P.) 1a9 Reynolds Ave.. Coming, N. Y. iCaming Glass Works) S M I T H . R o r.a id J. Box 34", Alfred. N. Y. SM ITH . Rowland D. (G5 12 Woodlawn Ave.. Corning, N. Y. ICorning Glass Works) SM ITH. R. Thomas 236 W. Ninth St.. Rolla. Mo. SM ITH . Rufus J., Jr. (S) 206 S. Jefferson St., Goldsboro, M. C. ( E. I. du Pont dc Nemours & Co.) SM ITH . Sidnev L. 16 Munson St.. Le Roy, N. Y. SM ITH 4 STONE. LTD. (T. Wold) G eorgetow n. Ont.. Canada SM ITH . T. Sydney 3rightwood. Va. SM ITH. Walter F.. Jr. (M) United Clay Mines Corp. 101 Oakland St.. Trenton 6. N. J. SM ITH. William E. CG) 5030 Janet. Svlvania, Ohio (Owens-Illinois) SM ITH, William L. (M) H arris Clay Co., Spruce Pine, N. C. SM ITH . William R. 20 DeLaney Dr.. Geneva, N. Y. SMOCK. Alden W. (G) 41 Euclid Ave., Columbus 1, Ohio (North American Aviation Inc.) SMOKE. Edward J. (W> I I Edgewood Rd., Mctuehen, N. J. (Rutgers University) SMOOT. Jack M. (DI) Chamblee. Ga. (Dogwood Ceramics) SMOTHERS. W. J. (B) Ohio Brass Co., Bsrberton, Ohio SMYLY. James P. (W JI) Box 41J3. Chattanooga. Tenn. (American Lava Corp) Vol. 35. N o . 10 (1956) SMYTH. Harold T. iGt New Jersey Ceramic Research Station Rulgefs Uime-.sitv. New Brunswick. N. J. SNELL. Richard G G, 1717 Calumet Ate.. Tcieco 7, Ohio (Ltbbey-Owens rord Glass Co.) SNIDER. Carl A. Jr. (G) 4820 Girard Rd.. Pittsburgh 27, ?a. (Kaiser Aluminum 3: Chemical Saies. Inc.i SNIDER. Stuart M. ..SI 325 Club Dr.. Salisbury, N. C. (Taylor Ciav Products Co.) SNODDY. John H. t.W) Gladding. McBcan 3c Co. 2901 Los Feiiz 31vd. Los Angeles J9. Cali/. SNOW. L. James (S) MithinviHc. Pa. (Alliance Clay Product Co.) SNOW. Roland 3. <RF) United States Steel Corp. Applied Res. Lab.. Monroeville, Pa. SNYDER. Ernest 3. (RI) Wheeling Steel Corp. Steubenville South Plant Steubenville. Ohio SNYDER. Nicholas H. (W ) 531 Mapie Ave.. Trenton 3, N. J. (Rutgers University) SOBON. Leon . Box 737. Alfred. N. Y SOCIETA ITALIANA RFRATTARI MARGHERA AZIONARIA (Domenico Giacomelli) Via Industrie 52, Casella Postale 308 Marghera. Venice. Itaiv SOCIETE FRANAISE DE CERAMIQUE (Y. Lerort) Service de Documentation 23, rue de Cronstadt Paris XV". France SOCIETE PROFESSIONNELLE DES PRODUITS FRANAIS DE TERRE CUITE (M. Jacques Labansat) 23, rue de Cronstadt Paris XV. France SOCIETY OF GLASS TECHNOLOGY (R. W. Douglas) "Thornton" HaJlam Gate Rd.. Shemeld 10. Engiand SOCONY M O BIL O IL CO. 'W . B. Stevens) ISO E. 42nc St.. New York 17. N. Y. SODERSTRUM, William K. (SI) 374 Davis Rd.. Batavia. 111. (Structural Clay Products Research Foundation) SOLOMON. Earl (S I) 1637 Boston Ridge Rd. Orchard Park. X. Y. (Electro Refractories & Abrasives Corp-) SOLVAY PRO CESS DTV.. A L L IED CHEMICAL * DYE CORP. Librarian. Box 271, Syracuse 1, N. Y. SOMANY, O. M. Hindusthan National Glass Mfg. Co., Ltd. 2. Wellesley P!,, Calcutta 1, India SOMERS. A. J. Borax Consolidated, Ltd. Borax House, Carlisle PI. London S.W .l. Engiand SOMMER. Alfred (W) 89 Fairmount Ave.. Kingston, N. Y. (Ferroxcube Co. of America) SOMMERVILLE, J. L. (GI) 283 Atlantic St.. Bridgeton. N. J. (Owens-Illinois) SONDLES, Merrill C. (W ) Parien City Pottery Co. Paden City, w. Va. SONENSHINE, Lewis (WJ) 2141 Holland Ave. New York 64. N. Y. (Mueon. Inc.) SO.VT2. A rthur .R I/ 3054 S Crandon Ave., Chicago 17, ill. t United States Steel Corp.) SOSMAN. Robert B. (Honorary, BFI) Schooi of Ceramics, Rutgers UniversityNew Brunswick. N. J. SOUTH. Furman. Jr. (RI Lava Crucible-Refractories Co. First National 3ar.k 3ldg. Pittsburgh 22. ?s. SOUTHERN POTTERIES. INC. (H. W. Kibicrl Box 279 Erwin, Tern. SOW ERS. Robert M. (G) S Edgerton Ln.. Dearborn, Mich. (F o rd Motor Co.) SOWMAN, Harold G. (R) 1430 Grand Blvd.. Schenectady, N. Y. (Knolls Atomic Power Lab.. General Electric Co.) SOXMA.N. Edwin J. (I) Box 117. Allred. N. Y. SPAIN. Richard W. (G) 2315 Drummond Rd.. Toledo. Ohio (Owens-Illinois) SPANGENBERG. William C. (M I) "SO E. Fillmore Ave. East Aurora. N. Y. (Titanium Alloy Mfg. Div..) National Lead Co.) SPARKS. Edgar W. (W) 406 Unaka Way, Erwin. Tenn. (Southern potteries, Inc.) SPARROW. Paul F. (R) 2447 Oid W ashington Rd. BridgeviUe, Pa. (N orton Co.) SPEIL. Sidney (G I) Johr.s-Manville Research Center Manvile. N. J. SPEN CE. C. F. iE ) 1005 Hartford S:.. W orthington. Ohio (Chicago Vitreous Corp.) SPEN CE. Harold I. Klaom Irmaos & Cia Av. Suburbana. 5472 Rio ce Janeiro. Brazil SPENCER. Charles D. (Gr> 2113 Taylor Rd.. Cleveland 12, Ohio (Lamp Dept.. General Electric Co.) SPENCER-STRONG. G. H. (EFZ) 1C9 Witherspoon Rd.. Baltimore 12. Mil. (Pemco Corp.) SPENGLER. H. H. (G) General Electric Co. Lamp Div., Glass Technology Lab. 1133 E. 152nd St.. Cleveland 10. Ohio SPERRUNG. Richard F. (GJ) 138 37th St.. N. E. Cedar Rapids, iowa (P ittsburgh Plate Glass Co.) SPINKS. H. C.. CLAY CO., INC. (R. B. Carothers) Box 829 Paris. Tenn. SPINNER. Sam (G) National Bureau of StandardsWashington. D. C. SPIRES. Stephen T. (RI) North American Refractories Co. Mt. Union, Fa. SPIR K O . Edward J. Box 82" . Alfred. N. Y. SPLANN. Mary Theresa (G) Coming Glass Works, Coming, N. Y. SPOERRY, Henry J. Schmidhciny & Co.. Ltd. Heerbrugg, (S tG .) Switzerland SPRIGGS. Richard M. 408 W. Nevada St., Urbana, III. SPROAT. Ira E. (W Fl) R. T. Vanderbilt Co.. 230 Park Ave. New York 17. N. Y. SPRO U L. Jam es D., Jr. elevan. N. Y. SPURCX. Richard F. (W) Manford Ln.. Wilton, Conn. I Machlett Laboratories) R oster 101 SPY U T , A lber: 3 iO / Raytheon M anufacturing Co. 55 Chapel St.. Newton, Mass. S Q U A R E D CO . (R alph E. H anna) Molded Insulation Div., Peru, Ind. SQL-IER. Arthur A. (S i 1616 V.'ainu: S:.. Philadelphia 3, Pa. ) ( D istributor i _ ,,AATLICHE PORZELLANMANUFAKTUR 3ERLIN IGerhard MuilerJ Hartxar.nstraase 1-3 (Ida Seib/Oberfr. U. S. Zone, Germany STAATS. Henry N. (E) Applied Research. Inc. 135 S. LaSalle St.. Chicago 3. 111. STACH. Otto R. (R) 90 W. Grimsby Rd. Kenmore 33, X . Y. ICarborundum Co. i STADLER. Leo 2 . (G) 1057 Plymouth S:.. Windsor, Conn. (Hartford-Etr.pire Co., Div. Enthrt Mfg. Co.) STAFFICXER. Charles F. (G) SOS Grandview Ave , Vineland, N. J. IKimble Glass Co.) STAFFORD, Ray (M) Southern Calif. Minerals Co. 330 S. Mission Rd. Los Angeles 33. Calif. STAFFORD, W. L. (RFI) Jchns-Manviile Research Center Box 159. Manvide, X. J. STAHMANN, John A. (BJ 4275 Verdugo Rd. Los A-ngcies S3. Calif. (Gladding. McBean 4 Co.) STALEGO, Charles J. (G) 227 X. Fifth St., Newark. Ohio (Ower-s-Corr.ing Fiberglas Corp.) STALTER. Thomas L. (I) 71 V/. Xorwten Ave.. Columbus I, Ohio 'A M PS. Murray R. (W) Canadian porcelain Co. Ltd. 3ox -23. Hamilton. Ont.. Canada STANDARD 3 RICK 4 TILE CORP. (Clinard A. Kleymeyer) 123 X. W. Fourth St. Evansville 3. Ind. STANDARD ULTRAMARINE A COLOR CO. (L. F. May) Huntington IS. W . Va. STANGL, J. If. (W ) Staugi Pottery, Trenton 4, X. J. STANGL PO TT E R Y (J. M. Stangl) Trenton a, JJ. J. STANISLAW , T. Staniey (W ) Box 354. Centerport. L. I., N. Y. (SyIvania Electric Products. Inc.) STANLEY. George V. (E) 2752 W. 90th ?L Evergreen Park *2, III. (Crane Co.) STANLEY. Robert J. (G) M. H. Detrick Co,, 10600 Puritan Ave Detroit 38. Mich. STAXXARD. Wilfortj T. (D) J. A. Dedouch Co.. 608 Harrison St. Oalc Park. III. STANSFIELD, James R. D. (S) Streator Brick Co. Div. Hydraulic-Press Brick Co. Streator. I1L STANWAY. Miss B. Elm Works Ltd.. Summerstown, Tooting London S. W. 17, England STANW ORTH. John Edwin 74 Ashlawn Rd,, Rugby Warwick, England (British Thomson-Houston Co., Ltd.) STA PLETO N . Robert E. (\V) 22 C hestnut St.. Franklinville, N. Y. (H i Q Div., Aerovox Corp.) STA 1'P. John A.. Jr. iG , Union Carbide 4 Carbon Corp. Silicones Div. E. Park Dr. !c Woodward Ave. Tonawanda, N. Y. STAR PORCELAIN CO. (Daniel W. Luks) Muirhead Ave.. Trentor. 9. N. J. STARK CERAMICS. INC. (J. H. Stewart) Box 230 Canton 1, Ohio STARK. R. E. (W) R. R. 5, Greensburg, Pa. (Stupakoif Div.. Carborundum Co.) STARK. W. F. (E) Prom at Division. Poor & Co. 851 S. Market Si., Waukegan. 111. STARKEY. Daryle D. (M) R. R. 1, Willard. Ohio (Starkey Engineering & Machinery Co.) STARKEY, Edward A. (M) 1068 Woodhill Rd.. Mansfield, Ohio (Starkey Engineering 4 Machinery Co.) STARKEY. Elmer A. (R) 22397 Fairlawn Circle. Apt. 10 Fairview Park 26, Ohio (N orth American Refractories Co.) STAT HIS. Andrew W. (RI) 5917 Cary, Cincinnati 34, Ohio <Charles Taylor Sons Co.) STAUDT. August (W ) 264 Water St.. Perth Amboy. N. J. STA U FFER CHEMICAL CO. (M. P. Kerins. Jr.) 380 Madison Ave., New York, N. Y. STAU FFER, Kenneth H. B. (W) Robertson Mfg. Co.. Box 848 Trentor 5. N. J. STAVROLAK1S. J. A. (B) 915 Leonard Dr., Rock Hill 19. Mo. (Crucihle Steel Co.) STEARNS. William E. (E) A. O. Smith Corp. 3533 N. 27th St.. Milwaukee. W'isc. STECK. C. O. (G) F. J. Kress Box Co.. One 2Sh St. Pittsburgh 22. Pa. ST E EL E . A. Preston, Jr. (S) J. C. Steele 3c Sons. Inc. Box 951. Statesville. X. C. ST E EL E . C. N. (S) J. C. Steele 4 Sons. Inc. Box 951. Statesville. N. C.. ST E E L E . F. Montgomery (S) J. C. Steele & Sons. Inc. Box 951. Statesville. X. C. ST E EL E . G. Allen <R> 101 MacGregor Dr., Trotwood. Ohio (5imonds Worden White Co.) STEELE, HarTy L. Shorter & Son Ltd.. Copeland St. Stoke-on-Trent. England STEELE. Howard E. (G) Westinghouse Electric Coro. Hoult Rd.. Fairmont. W. Va. STEELE. Hoyt P. (E) Benjamin Electric Mfg. Co. Des Plaines, 111. STEELE. J. C . Jr. (SF) J. C. Steele & Sons. Ine. Statesville. N. C. STEELE. J. C- 4 SONS, INC. (J. C. Steele. Jr.) Statesville. N. C. STEELE. Richard E. (M) Ram, Inc., 1064 W. Fifth Ave. Columbus 8. Ohio STEELE. William Perrin (S) Pine Hall Brick 4 Pipe Co. Winston-Salem, N. C STEFL. Donald J. (R) Freeport Brick Co. Box 402, Freeport, Pa. ST E IL . Roy C. (G) 34S0 Garfield S t . Denver 5, Colo. (W oodbury Chemical Co.) STEIN , Colin H. 7 Melville Terrace. Stirling, Scotland ( John G. Stein 4 Co., Ltd.) Vol. 35. No. 10 (1956) STEIN. Ronald C.^ Messrs. John C Stein Si Co., Ltd. Bonnybrtdgc. Scotland STEIN. Sidney J. (3) International Resistance Co. 401 N. Broad St.. Philadelphia S. Pa. STEIN BOCK. E. A. (R) Whip-Mix Corp., 41! W Avery St. Louisville 3. Ky. STEINER. Harry C. iC , General Electric Co. Power Tube Dept. Scbenectacv 5, N. Y. STSIN H O FF. Fred L. (Wj-T; Brick er Clay Record--Ceramic Imiutlry 5 S. Wabash. Chicago 3, 111. STEINROUDER. Friu Didier-Werke A. G., Lessingstr. 16 Wiesbaden, Germany STELLE, John A. (S) Arketex Ceramic Corp., Brazil. Ind. STENQUIST. Donald R. (X J) Box 685. Redmond. Wash. (Boeing Airplane Co.) STEPHENS. Dan E. (R) North State Pytophyllite Co. Pomona, X. C. STERLING CHINA CO. (William T. Pometoy) East Liverpool. Ohio STERLING GRINDING W HEEL CO. (W . R. Morgan) Box SOI. Tiffin. Ohio STERLING. Harry S. (G) Corning Glass Works Harrodsburg, Ky. STERN. George (B) American Sinteel Corp. 320 Yonkers Ave.. Yonkers 2, N. Y. STERRY J. Patrick 346 Macassar Dr., Pittsburgh 36. Pa. STERRY. NY. Michael (E) 5124 Fifth N. E., Seattle 5, Wash. (Boeing Airplane Co.) STETSON. Harold W. (B) R. R. 2. Painted Post. N. Y. (Corning Glass Works) STETSON. William C. (W I) Box 44, Saxonburg, Pa. (Saxoaburg Ceramics) STETTINIUS. K. E. <W) Lapp Insulator Co., Inc.. Le Roy, N. Y. STETTNER. Donald H. (E l) 976 Center Ave.. Lancaster. Pa. (Radio Corp. of America) STEUBENVILLE POTTERY CO. (W . J. Mould) 3ox 1030 Steubenville. Ohio STEUERNAGLE. J. H. (G) Brockway Glass Co., Inc. Wood St., Brockway. Pa. STEVENS. E. G. 1420 N. Herraosa Ave. Hermosa Beach. CaliF. STEVENS. Frank J. (W I) 414 Prospect St.. Nutley 10. N. J. (Isolantite Mfg. Corp.) STEVENS. Joe (R) Murray Refractories Co.. Box 338 Murray. Utah STEVENS. L. M. (R) 2907 Alabama St., La Crescenta. Calif (Cladding, McBean & Co.) STEVENS. Robert P. (RI) Chicago Fire Brick Co. 1625 W. 104th PL. Chicago 43. III. STEVENS. W. B. (W ) . Socony Mobil Oil Co. 150 E. 42nd St.. New York 17. N. Y. STEVENSON. James K., Jr. (RI) R. R. 2, Mundelein. III. (Norton Co.) STEVENSON, Samuel (W ) 1967 Grafton Rd., Elyria, Ohio (Harshaw Chemical Co.) STEVENTON, Kenneth John Stcventon 6c Sons Ltd. Cledford Works Middlewick. Cheshire, England R oster 103 STEW ART, Alex (E i STOOKEY. Stanley D. (CF) National Lead Co., 111 Broadway 14S Pritchard Ave.. Coming. N. Y. New York 6, N. Y. (Coming Glass Works) STEW ART. Isaac (G) STOOPS. Robert F. (R I) New York Testing Laboratories, Ine. Metallurgical Products Dept. 47 West S:.. New York 6. N. Y. General Electric Co.. 3ox 237 TEW ART, H. t.S) Roosevelt P ark P. O. ! Stark Cerastes, Inc., Box 230 Detroit 32. Mich. Canton 1, Ohio STORER-FOLT, John ?. (RJI) STEW ART, John A. (GiJ 1 Beniamond Ave.. Apt. E. a 19 Locust Ave., Washington, l'a. Toronto 13. Ont.. Canada (B. F. DraRenteid it Co., Inc.) (Refractories Engineering Sc STEW A RTTIIaiccim ( XI) Supplies, Ltd.) Commercial Minerals Co. STOTT, A. E. 310 Irwin St., San Francisco 7, Calif. Edward Johns & Co.. Ltd. STEWART, Wilfred H. (R) Armitage Sanitary Pottery United States Reduction Co. New Rugeiey, Stafford. England 4619 Meiville. East Chicago. Ind. STICKEL, William C. (R ) Aluminum Co. of America STOUT. John R. (W ) 306 E. Xfurray St.. Xfacomb, 111. (Illinois Electric Porcelain Co.) 123 S. Broad St., Philadelphia, Pa. STOUT. Joseph V. (E) S T IE F, W. C. (W ) 104 S. Fourth Ave. Mt. Clemens Pottery Co. Highland Park. N. J. 158 S. Wilson 31vd,, Mt. Clemens. Mich. (Metal 3c Therm it Corp.) STILL, Henry P.. Jr. 51 Stonelcigh Rd.. Worcester 6, Mass. (Norton Co.) STILLW A TER CLAY PRODUCTS CO. (J. P. Duffy) Lock Drawer 32 L'hrichsviile, Ohio STOCK, Donald F. (R) 239 Maxwell Dr., Pittsburgh 36, Pa. (Harbison-Waiker Refractories Co.) STOCKDALE, George F. (G) 49 Coming Blvd., Coming, N. Y. (Coming Glass Works) STOCKSLAGER. Theodore F. (W ) Carborundum Co. 24800 Lakeland Blvd. Cleveland 32, Ohio STODDARD. Stephen D. (R I) 2974 B Walnut. Los Alamos. N. XI. (Los Alamos Scientific Laboratory) STOEN, Reger C. (SI) Cannelton Sewer Pipe Co. Canneltcn. Ind. STOH L. Alfred A. (W ) 374 North St.. Sun Prairie, Wise. (Wisconsin Porcelain Co.) STOHL, L. A. (W ) Wisconsin Porcelain Co. STOUT. Lester L. (B) Ohio State University Research Foundation Columbus 10. Ohio STOVER. Edward R. (B) General Electric Co. Research Lao. 243 XIB Box 1038, Schenectady 3, N. Y. ST. PIERRE. Philippe D. S. (B) General Electric Co., Research Lab. Metallurgy Sc Ceramics Div. Box 1038. Schenectady, N. Y. STRADLEY. J. Grant (I) 1950 Korbel Ave.. Lot 93 Columbus 1!. Ohio STRADLEY. Norman (E l) Minnesota Xtining & Xlfg. Co. 2301 Hudson Rd.. St. Paul 6, Minn. STRAIGHT, Lee H. (S) lotva C a y Products Co. Centerville, Iowa STRAIN. R. E. (E) Alliance Ware. Ltd. Box 150, Vancouver, B. C., Canada STRATTON, Warren 3711 15th X. E.. Seattle 5. Wash. 120 Lincoln St.. Sun Prairie, Wise. STRATTON. Mrs. W. B. (D) ST O IA . Pfc. John Z. (W JI) Pewabic Pottery. 10125 Jefferson Ave. US 32373935, Btry 3663rd F.A. 3n. Detroit 14, Mich. APO 331. San Francisco. Calif. STCLLER. Arthur I. (WJ) Radio Corp. of America Princeton. N. J. STOLTE, Norman H. (E l) 3974 Orchard Rd. Cleveland Heights 21. Ohio (H artbsw Chemical Co.) STON E. Benjamin (W ) California Crafts 43340 N. Gratiot. Xlt. Clemens, Mich. STON E. Conrad A. (G) 93 S. Remington Rd. Bexley, Columbus 9. Ohio (Federal Glass Co.) STON E, C. P. Ferramic Industries, Ltd. 25 Hydeway, Welwyn Garden City Herts. England STO N E. F. R. (R) Canada Firebrick Co., Ltd. 4741 St. Ambroise St. Xfontrcal. Que., Canada STONE. Roben J. (M) John W. Higman Co. 2 State St.. New York 4. N. Y. STO N E. Robert L. (B FI) Dept, of Ceramic Engineering STREATOR 3 RICK CO.. DIV. HYDRAULIC-PRESS BRICK CO. (James R. D. Stansncid) Streator. 111. STRIMPLE. J. H. (B) National Lead Co.. Titanium Div. Box 58. South Amboy, N. J. S T R IN G F E L L O W , A llen E . <R) 544 W oodland Ave.. Haddonfield, N. J. (I-T-E Circuit Breaker Co.) STROD. Arvid J. (E l) Industrial Metals Improvement Co. The Park Bldg., Pittsburgh 22, Pa. STRONG. Kenneth B. (W) 4624 Belmont Park Terrace Nashville 12, Tenn. (Titanium Alloy Mfg. Div., National Lead Co.) STROTT. Adolf J. (R) Kearfott Co.. Ine.. Ceramic Dept. Little Falls, N. J. STROUD. Harold L. (M) 2909 Bembridge Rd., Royal Oak, Mich. (Champion Spark Plug Co.) STROUP. Philip T. (R) Aluminum Co. of America Box 772. New Kensington. Pa. University of Texas, Austin 12, Texas STROUPE. Howard E.. Jr. (W I) ST O N E. S. A. (M) Wheeling Tile Co., Wheeling, W . Va. Deister Concentrator Co. STRUCTURAL CLAY 901 Glasgow Ave., Fort Wayne, Ind. PRODUCTS INSTITUTE STONG. Guy S . (G) 926 W. W ater St.. Elmira, N. Y. (Harry C. Plummer) 1520 18th St_ N. W. (Coming Glass Works) Washington 6. D. C. Vol. 35. No. 10 (19561 STRUCTURAL CLAY PRODUCTS RESEARCH FOUNDATION (Paul V. Johnson) Geneva, 111. STRUEBING. Harold J. (R) 1215 Xlilitary Rd., Buffalo 17, N. Y. (Richard C. Remxr.ey Son Co.) STUART. Derild A. (B) Thurston Hall, Cornell University Dept, of Er.gr. Mat.. Ithaca, N. Y. ST U B 3IN 5. William J. (W) Rio Atovac 26-14, .Mexico 5, D- F. (Consultant) STUBBS. John M. (M) National Gypsum Co. 3013 Boucinot Ave. Cincinnati 33, Ohio STUCKEY. Jasper L. (X) 1911 Sunset Dr,, Raleigh. N. C. (North Carolina Dept, of Conservation & Development) STUNTZ. Robert P. (R) Babcock it Wilcox Co. 105 S. LaSalle. Chicago 3. III. STUPAKOFF DIV. CARBORUNDUM CO. (Semon H. Stupakoff) Latrobe, Pa. STUPAKOFF. Semon H. (W) Stupakoff Div., Carborundum Co. Latrobe. Pa. STYER, Charles A. (R) 11 Roxbury Rd.. Forest Hills Pittsburgh 21. Pa. (Vesuvius Crucible Co.) STYHR. Karsten H.. Jr. I l l S. Fourth Ave. Highland Park. N. J. SUBBARAO, Eleswarapu C. Pennsylvania State University College of Mineral Industries Dept, of Ceramics University Park. Pa. SUBRAHMANYAXl. Sanga V. (G) 1-H Arlene Village. Millville. N. J. (T. C. Wheaton Glass Co.) SU3RAXIANIAN D. R. Burn dc Co. Ltd. Refractory it Ceramic Group 12 Mission Row. Calcutta I. India SUCH CLAY CO. (M. M. XtcKose. Jr.) Box 4". Perth Amboy, N. J. SU LENS. Henry A. (M) Ceramic Supply Co.. Dtv. Ferro Corp. Box 151. Crooksville. Ohio SULLIVAN. Eugene C. (GF) Corning Giass Works. Coming, N. Y. SU LLIVA N. John D. (BFI) Battclle Xtemorial Institute 505 King Ave., Columbus l, Ohio SULLIVAN. Joseph C. (G) 38 Fulton St., Coming, N. Y. (Coming Glass Works) SULLIVAN. Paul A. (GI) 624 Adeline Dr., Webster. N. Y. (Bauscb it Lomb Optical Co.) SUMXIERS. E. W. (G) Owens-Illinois. Technical Center 1700 N. Westwoo.d Ave. . Toledo 7. Ohio SUXIRELL. Ferrall N. (E) 707 Henry St.. Uniondale, L. I.. N. Y (Hardwick. Hindle. Inc.) SUN, K. H. (GF) 2131 Lindsay Rd., Pittsburgh 35. Pa. (Wcstinghouse Electric Corp.) SUPAR Ceramic Institute Bandung, Java, Indonesia SUR ENAMEL & STAMPING WORKS. LTD. (M. M. Sur) 24 Middle Rd.. Entally Calcutta 14, India SUR. M. M. Sur Enamel 4 Sumping Works. Ltd. 24 Middle Rd.. Entally Calcutta 14, India SURFACE COMBUSTION CORP. (Harvey C. Weller) 2375 Dorr St. Toledo 1, Ohio Roster 105 SURFLEET. Harold Kaylene Laboratories, Waterloo Rd. London, N. W. 2, England (Kaylene (ChemicalsI L:d.) SUTHERLAND, Clark (S) Robinson Clay Produe: Co. ` W. Stare St., Akron 9, Ohio S JERLAND. Frank R. (S I) . i l Rainbow Dr., Kokomo, Ind. I Haynes Stellite Co.) SU TPH EN . F. G. (X) 2505 Central Ave., Middletown, Ohio SUTTON. Paul M. (G) Corning Glass Works, Corning, N. Y. SUTTON, Willard H. Pennsylvania State University Mineral Industries Bldg. University Park, Pa. SUTTON. W. J. (R I) 24 High St.. Alfred. N. Y. (State University of New York. College of Ceramics) SYEC, J. ;. (W I) 3440 S. Euclid Ave.. Berwyn. III. (Industrial Publications Inc.) SW AIN. Richard S. . 509 Kibler Ave., Newark. Ohio SWALM, Phaon H. (W ) Box 173. Kingston. Ont.. Canada (Frontenac Floor & Wall Tile Co., Ltd.) SWANSON. Carl H. 770 Techwood Dr., X. W., Atlanta, Ga. SW ANSON. Leroy 11. 34 Hudson St.. W orcester, Mass. SW EARINGEN, Jack C. (G) United Can Sc Glass Co. Box 90. Hayward. Caiii. SW EITZER. Mark (W ) 747 N. Mentor. Pasadena, Calif. (S. Paul Ward. .Inc.) SW ENTZEL. John ? . (R P 8960 Hennepin Ave. Niagara Falls. N. Y. (Carborundum Co.) W EO, Benjamin J. ( E r l) Ferro Corp. 4150 E. 56th St.. Cleveland 5, Ohio SWICA. Joseph J. Box 165. Alfred. N. Y. SW ICKER. Victor C. (GF) 907 Floral Dr., Whittier, Calif. ( Consultant) SW IFT. Howard R. (GF) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio SW IGART. Joseph J. (M) 3014 Middletown Rd.. Pittsburgh 4, Fa. (Vitro Rare Metals Co.) SWINDELL-DRESSLER CORP. ( Philip Dressier) Box 1888 Pittsburgh 30. Pa. SW IX EH A RT. David C. 808 E. 42nd. Apt. D. Seattle 5. Wash. SW INNERTON. Bertram B. (W ) 157 Hampden Park. Timn, Ohio (American Radiator Sc Standard Sanitary Mfg. Corp.) SW INNERTON, George R. (M) 35 E. State St,, Alliance, Ohio (Moore Sc Munger) SYLVANIA ELECTRIC PRODUCTS. INC. (B. S. Ellefson) 1740 Broadway. New York 19. N. Y. SYLVESTER. George R. (M I) Sylvester & Co. 17706 Miles Ave.. Cleveland 23, Ohio SZCZEPANSKI. Daniel A. Box 757. Alfred. N. Y. SZYMASZEK. Jin Walter (R) 121 Muir Ave. Niagara Falls. Ont.. Canada (Metals Research Laboratories) T iBATA. Seiichi Sasaki Glass Mfg. Ca.. Ltd. 1.1-Chome Yokokawa-Bashi Sumida-kn. Tokyo. Japan TAILBY. Roland V. (W l) Stylon Corp.. Milford. Mass. VOL. <`i. No. 10 (19.561 T A JK O W SK 1. Edward G. (G . General Electric Co. Silicone Products Dept. Waterford. X. Y. TAKAHASHI. Kakuichiro (F) Nippon Glass Co., Ltd. 1, Ginza 7-ehome, Cauo-Ku Tokyo, Japan TALLAN. Norman M. 95 E. 12th Ave., Columbus. Ohio TALWALKAR, T. W. 8 Bagman Rd., Jamsbedpur, India (Tata Iron & Steel Co.. Ltd.) TANBERG, Ragnar Drammens Glassvcrk Dramtaen, Norway TAO, Yung (G) 501 S. Garfield St.. Burlington, Iowa (Sylvania Electric Products. Inc.) TARNACKI. Walter J. (W I) 8417-C Loch Raven Blvd. Towson 4, Md. (Fries Instrument Div.. Bcndix Aviation Corp.) TARNOPOL, Milton S. (B) 943 Ninth Ave., Brackearidge, Pa. (Pittsburgh Plate Glass Co.) TASH1RO. Megumi Institute for Chemical Research Kyoto University Yoshidahon machi, Sakyoku Kyoto. Japan TATE. Frank E. (W I) 310 Tenth St., Lincoln, III. (Stetson China Co.) TATEM. William A. (R J) 7 Willow Ln.. Carle Place. N. Y. (V . S. Navy) TATNALL. R. Francis Box 327, Alfred. N. Y. TAUBER. Charles B. (B) 921 Signal Rd., Signal Mountain. Tenn. (American Lava Corp.) TAUBER. John A. (RI) 3190 Mayflower Rd. Plymouth Meeting. Pa. (E. J. Lavino Sc Co.) TAYLER, John 3. (W l Louisville p o tte ry Co.. Inc. 228 E. Bloom. Louisville 8. Ky. TAYLOR. Fran (D) Gay Fad Studios. Lancaster, Ohio TAYLOR. Hiram D. (B) Shrcve M anufacturing Co.. Shreve. Ohio TAYLOR. Howard U. (W I) Globe-Union Inc.. Ceramic Lab. 900 E. Keeie Ave.. Milwaukee 12, Wise. TAYLOR. J. J. (W) Ohio Brass Co., Barberton, Ohio TAYLOR. Louis J. (W ) Laboratory Equipment Corp. Box 151. St. Joseph, Mich. TAYLOR. Nelson W. (BF) Minnesota Mining St Mfg. Co. Fluoroehemicals Div. 900 Fauquier Ave., St. Paul 6. Minn. TAYLOR. Robert B. fS) Structural Clay Products Research Foundation. Geneva. III. TAYLOR. SMITH * TAYLOR CO. (Phil Wright) Chester. W. Va. TAYLOR. Thomas J. (R) 316 Sterner Mill Rd., Trevose. Pa. (R. C. Remmey Son Co.) TAYLOR. William C. (GF) Coming Glass Works. Coming. N. Y. TEAGUE. A. D. (R) Babcock Sc Wilcox Co.. Box 923 Augusta. Ga. TEAGUE BRICK A T IL E CO. f L. R. Boyd, Jr.) Box 329. Teague. Texas TEAGUE. Jo M,, Jr. (GI) Owens-Illinois Technical Center 1700 N. Westwood Ave., Toledo 7. Ohio TEAGUE. William T. 209 McCord St.. Marietta. Ga. TEETER. John N. (E) 677 Wilmo: Rd.. Dccrncid, ill. (Thomas C. Thompson Co.) TEETOR. Paul (S r) 72 E. Main St,, Somerville. X. J. (Central Commercial Co.) TEFFT, Glenn C. (S; Claycrai: Co.. Shawnee. Ohio TEFFT. Phillip W. (SFI) Claycrait Co., Box 366 Columbus 16. Ob:o TEFFT, Willard H. () Claycraft Co.. Upper Sandusky, Ohio TEGELLABORATORIET (Brick Laboratory), (Christer Enberg) Drott.aieg Kristinas vag 45 Stockholm 0 . Sweden TEICHMANN. Henry F. (G) Henry F. Teicbmann, Inc. Box 170S. Pittsburgh 30. Pa. TEICHMANN. Henry F.. Jr. (G) 645 Elderwood Dr., R. R. 2 Bridgeville. pa. (Henry F. Tcichmann, Ir.c.) TEICHMANN. Newton X. (G) 316 Hardy Dr., Bridgeville, Pa. (H enry F. Tcichmann. Inc.) TENNERY. 2/Lt. Victor J. (SJ) Signal Corps Eng. Labs. Chemical Physizs Branch Ferroelectries Unit Ft. Monmouth. N. J. TERMAN. Mark J. (R) Babcock & Wneox Co. 161 E. 42nd St.. New York 17. N. Y. TERRY. Grinin E. (E) 602 E. Willow, Wheaton, 111. (Hotpoint Co.) TERRY. Jack H. (E) 4321 Fairfield Ave.. Fort Wayne. Ind. (General Electric Co.) TEX AS BRICK CO. (W. T. Gill. Jr.) Box 510. Brownwood. Texas TEX AS V IT R IFIE D P IP E CO. (Paul E. Hoey) Box 117 Mineral Weils. Texas THATCHER GLASS MFG. CO., INC. (Roy S. Arrandale) 1901 Grand Central Ave., Elmira, N. Y. THEOBALD. Erwin F. (S) 1515-- 13th St.. N. W.. Canton 3. Ohio (Metropolitan Brick. Inc.) THEW S. Karl 3. (M) 83-09 Talbot St. Kew Gardens. L. I., N. Y. (Titanium Alloy MIg. Div.. National Lead Co.) TH IE LK E . Norman R. (3 ) National Carbon Co., Research Labs. Box 6116. Cleveland l. Ohio THIEM ANN. John VV. (W I) Alite Corp., Box 119. Orrville, Ohio THIEMECKE. Harry W. (W FI) Homer Laughlin China Co. Newell. W. Va. T H IE SS. L. E. (W F) Insulator Dept.. General Electric Co. Baltimore 30. Md. THOMAS. Charles A. G. E. J. A J. Pearson. Ltd.. Firebrick Works, Stourbridge, England THOMAS, Charles W. (Honorary) Clifton House, Old Swinford Stourbridge, England (E . J. & J. Pearson, Ltd.. Firebrick Works) THOM AS. Dav^d W. (W I) Tyeer Pottery, Inc. Armstrong St., Roseville, Ohio THOMAS. Everett A. (R) 2703 Sbaifer Ave.. Cincinnati II, Ohio (Chas. Taylor Sons Co.) THOMAS. George L. (G) II Ideal Ave.. R.R. 1. Cheswick, Pa. (Pittsburgh Plate Glass Co.) THOMAS. H. H. (M) 35 Highboy Court. Red Bank, N. J. (Pemeo Corp.) Roster 107 THOMAS. Ri'cham V. Ellendale Ril.. Chagrin rails. Ohio THOMAS, Robe:: H. iB i 238 Arlington Rd.. Newton rails. (Fails Welding 4 Mi? Co.) "HOMASO.V. James F. (!) I 562 Roosevelt Kd.. Kohler, Wise. /OMPSON, A. Paul t RF) Research Laboratories Eagle-Picher Co.. Jcplin, Mo. THOMPSON, Otaries W. (R) 216 Dell St.. Johnstown, Pa. ( Bc'.hleberr. Steei Co.) THOMPSON, Clyde L. (RFI) 4922 New Plymouth Rd. Pittsburgh 27, Fa. (Harbison-Walker Refractories Co.) THOMPSON. Franklin S. (W ) 25 Schenck Ave.. Matawan, N. J. (Atlantic Tile Mfg. Co.) THOMPSON, Frederick S. (GF) Corhart Refractories Co., Inc. 1600 W. Lee St.. Louisville 10. Ky. THOMPSON, G. L. Borax 4 Chemicals, Ltd. , 229 High Holborr. London, \V. C. 1. England THOMPSON. John D. (E) 2434 Evergreen Dr., Royal Oak, Mich. (Briggs Mfg. Co.) THOMPSON. Matthew S. (G) Puerto Rico Glass Carp.. Box 4272 San Juan. Puerto Rico THOMPSON. Noel M. (R) 721 Shady Lane. Pittsburgh 34. Pa. 1Lumnite Div. Universal Atlas Cement Co.) THOMPSON. Thomas E. (E) Box 252, Williams Bay. Wise. (Thomas C. Thompson Co.) THOMPSON. Lt. William M.. Jr. (BJI) WADC, Area 3 . Box 3303 Wright-Pattersoo AFB. Dayton, Ohio HOMSON. Homer G. (R) 12101 W. Howard St. Milwaukee 14, Wise. (Allen Bradley Co.) THOMSON. James X. (W) 2 McMaster PL, 3am, N. Y. (Westinghouse Electric Corp.) THOR. Mumer E. (RI) 313 Parkhurst 3ivd.. Buffalo 23, N. Y. Norton Co.) THORNE. James E. (W J) Case Manufacturing Corp. Robinson. III. THORNGATE, Bruce W. (W ) Royal Tile M anufacturing Co. Sytvania Sta.. Box 7292 Fort Worth 11, Texas THORNTON. George A. (M) Ottawa Silica Co., Box 437 Ottawa. 111. THORNTON. Paul E. (W I) 1703 La Tata Dr.. La Canada, Calif. (Ferro Corp.) THRASHER. William R. (D ) Model Ceramics. Inc. 772 N. Main, Akten 10, Ohio THROPP. Herreid D. (M) Shenandoah Silica Co- Inc. 190 W. State S t- Trenton 8. N. J. THUENER. Everett E. (W) R. R. 5, Old State Rd. Schenectady 6, N. Y. (General Electric Co.) THUNHORST. Helen M. 2313 Saratoga Ave- Cleveland. Ohio THURNAUER. Hans (3FI) Minnesota Mining & Mfg. Co. Central Research. Inorganic Section Hudson Rd. Sc East Ave. Sc. Paul 6. Minn. THUT, Walter W. A. G. Hunziker 4 Cic, Lagentrasse l Zurich. Switzerland TIBBALS. Harvey L. 1.MI) 542 Santa Barbara Rd. Berkeley 7, Calif. Ohio (Minneapolis-Honeywell Regulator Co.) TICE. Henry B,, Jr. (W ) Zenith Radio Corp. 1500 N. Kostncr Ave. Chicago 51. 111. TICKLE. William H. F. "Brown Stacks." Caicy Nr. West Kirby, Cheshire, England (Manchester College of Technology) TIDD, Elbert D. IW) Bell Telephone Labs. Inc.. Rm. 3B-266 Whippany. N. J. TIED E, Ralph L. (G) Owens-Coming Fiberglas Corp. Case Ave.. Newark, Ohio TIERNON. Carlos H. (M J) Deister Concentrator Co. 901-935 Glasgow Ave. Fort Wayne. Ind. T1FTICKJIAN. John D. (W ) Winbura Tile Mfg. Co. 1709 E. Ninth S t- Little Rock, Ark. TILLOTSON, Clifford (R) Tillotson Refractories Co. Box 398. Corona, Calif. TILLOTSON, E. Ward (GF) 505 S- Murtland Ave., Pittsburgh 8, Pa. (Mellon Institute) TIMBERLAKE. John J. (G) Forter-Teichmann Co. 1212 Clark Bldg., Pittsburgh 22, Pa. TINKER. Dean (M) Granville, Ohio (Ohio Kilns. Inc.) TINKLEPAUGH. J. R. (R I) State University of New York College of Ceramics at Alfred Univ. Alfred. N. Y. TITA NIUM ALLOY MFG. DIV., NATIONAL LEAD CO. (W . J. Baldwin) Box C. Bridge Station Niagara Falls, N. Y. TITUS, Henry 3. (R) North American Refractories Co. 50 Church St.. New York 7. N. Y. TOBERG. John (E) Shepherd Chemical Co. 2803 Highland Ave. Cincinnati 12. Ohio TOBEY. Henry M. (S) Dow Chemical Co.. Midland. Mich. TOCKER. Edwin 3917 Pinkney Rd.. Baltimore 15. Md. TODD. Henry (W) Dee Lane. Qucenston. Ont- Canada (Canadian Ohio Brass Co.) TO EPFER. George (W ) Canadian Potteries Ltd. 360 3lvd. Sminaire SL Johns. Que- Canada TOLER, Herbert R. (E ) R. R. 2. Box 544, West Chicago, 111. (Indiana Steel Prod. Co.) TOLLY. Donald 3 . (E J) 122 Hudson Ln- Fern Creek. Ky. (General Electric Co.) TOM. Elgin M. (G) 4208 Mariaine D r- Toledo 6. Ohio (Kimble Glass Co.) TOMASEK. A. J. (R) Walsh Refractories Corp. 101 Ferry St., St. Louis 7, Mo. TOMKINS. David E. (M) R. R. 5, Eastbrook R d- New Castle, Pa. (Sheaango China, Inc.) TOOL, Arthur Q. (GF) 7325 Carroll Ave. Takoma Park 12. Md. TOOLEY. F. V. (GF) 611 W. Oregon, Urbana, 111. (University of Illinois) TOOMEY. James E. (R) Kaiser Aluminum 4 Chemical Corp. 1625 Eye S t- N. W.. Room 915 Washington 6, D. C. V ot. 35, No. 10 ( 1956) TOPPING, Jvnr. (R . United States Steei Corp. 325 William Peer. PL Pittsburgh 30. Pa. TORGAL, K. G. 1/103. Manr.arpuram Tiruehtrapaili. S. India (Jamal Mcaamed College; TORNO. Ralph r . ., 410 Front St.. 3erea, Ohio (McGear. Chemical Ca.! TOROK. Julius J. (G) 3344 Gallatin Rd.. Toledo 6. Ohio (Owens-Illinois} TOSTEVIN. Edgar R- Jr. (WI) 2044 Westr.eid Terr., Bethlehem, Pa. (Western Electric Co.) TOULOUSE. Julian K. (GF!) 1817 Potomac D r- Toledo 7, Ohio (Owens-Illinois) TOW NSEND. William O. (W I) 2763 Nottingham Rd. Columbus 21. Ohio (Battellc Memorial Institute) TRABERT. Loren A. (W I) 610 Maple St.. Red Wing, Minn. (Red Wing Potteries. Inc.) TRAVIS, Betty A. (D) 124 W. 13th S t- New York 11. N. Y. TREDENNICX. William T. (RI) 514 Brookfield Rd. D rexel Hill. Pa. (Refractory Specialties Co.) TREFFXER. W alter S. (R) 440 W . M aple Rd. Lintbicum Heights. Md. (General Refractories Co.) TREISCHEL. C. C. (W FI) R. T. Vanderbilt Co.. 230 Park Ave. New York 17. Y. TREITLER, Theodore L. (G) Coming Glass Works, Coming. N. Y. TREN TO N PO TT E R IES CO. Plants 1 4 2. 3C9 N. Clinton Ave. Sox 141, Trentan, N. J. TREPTOW. Arnold W. (E) Bell Telephone Labs. Murray Hill. N J. TREVOR. John ?. Moira Rd- Woodville Nr. Bunon-on-Trent. England (Jobo Knowles 4 Co- Ltd.) TRIBE. Harold G. Electricity Meter 4 Allied Ind- Ltd. Box 4. Waterloo. Sydney, Australia TRINIDAD CLAY PRODUCTS. LTD. (Harold A. Eckel) 44. South Quay Port of Spain. Trinidad, B. W. I. TRINKLEIN. Robert L. (W ) 1551 Jackson Hwy., Florence. Ala. (Stylon Southern Corp.) TRIPP. Harlan P. (E l) 3605 Winchester Rd- Louisville 7. Ky. (General Electric Co.) TROMPETER. Bernard J. (M) Champion Spark Plug Co. 8525 3utler Ave.. Detroit II. Mich. TROST. Frank W. (R) Chas. Taylor Sons Co. 5 Haddon Ave- Haddonneld, N. J. TROSTEL. L. J. (RFI) General Refractories Co- Bax 1673 Baltimore 3, Md. TROSTEL. Louis J - Jr. (RI) Norton Co.. 1 New Bond S t Worcester 6. Mass. TROY. H. Neal (R I) Owens-Illinois 1700 N. Westwood Ave., Toledo 7, Ohio TROY. Walter J. (E) 888 Chili Ave., Rochester, N. Y. (Pfaudler Co.) TRUES DALE. Richard S. (I) Box 275. Alfred. N. Y. TRUMPLER. Alfred L. (M) Harper Electric Furnace Corp. 39 River S t- Buffalo 2. N. Y. Roster 109 TSE. Shou-chcng (\Vl> 53 Main Apt. 3-3 rairhaven. Mass. i Aerovox Carp.) TSUKADA, Kenichi Box 267, A lfred. S'. Y. ' c e s s a , Donald (M l) - ! I -a Winth.-op Rd. Huntingdon Valley. Pa. l Precision Grinding Wheel Co.) TCCKER. Edward F. t.R) StebLins Engineering 4 Mfg. Co. 363 Eastern Btvd.. Watertown. S . Y. TUCKER, Harvey C. (W I) rem o Corp., 4150.E. 56th St. Cleveland 5, Ohio TUCKER. Roland E. (W I) Trenton Potteries Co. 309 N. Clinton Ave.. Trenton, N. J. T V S C , Chi Fang (E) 1958 Nokomis Ave., St. Paul 6. Minn, i Minnesota Mining 4 Mfg. Co.) TCR3ETT, Paul E. (M I) R. R. 1, Dresden Hwy.. Paris, Tenn. (H . C. Spinks Clay Co.. Inc.) TCRCK. Raymond L. (M) 48 Short St.. Tiffin. Ohio t Sterling Grinding Wheel Co.) T U R ISSIN I. Robert (GJ) Coming Glass Works. Fallbrook Plant Coming, S . Y. TURK. Richard H. (E FI) Pemco Corp.. 5601 Eastern Ave. Baltimore 24, Md. TURLEY . Charles L. (G) B. F. Drakenfeld 4 Co., Inc. Box SI9. Washington, Pa. TURN BAUGH. Jerry E. 5310 33rd Ave. S , Seattle 8. Wash. TURKBULL, Edward D. (W ) 500 Penn A ve, Scranton 3, Pa. (Euston Lead Co, Div. Giidden Co.) TURNBULL. John C. (G) Radio Corp. of America ECA-Victor D iv, Lancaster, Pa. TURNER. A. A. (R) 53 I-ake A ve, Metuehen. N. J. fCarborundum Co.) TURNER. Donald Messrs. Lodge Plugs, Ltd. Rugby. Engiand TURNER. Mort D. (B) Calle 12 de Oetubre 414 Hato Rev, Puerto Rico TURNER. ?. ?.. Jr. (Rl) 46 Imbler D r , Cincinnati 18, Ohio General Electric Co.) TURNER. Robert C. (SI) One Jefferson Ave. Rockville Centre. N. Y. Structural Clay Products Institute) T U R N E R . W . E. S. (H onorary) 30 Whitworth R d, Ranmoor Sheffield 10, England TU T TL E. George N. fE ) Benjamin Electric Mfg. Co. Seegers Rd. 4 N. W. Highway Dcs Plaines. III. T U T TL E. Milton A. (R) Box 981. Alfred. N. Y. (State University of New York, College of Ceramics) TW ELLS. Robert (W FI) Electric Auto-Lite Co, Spark Plug D iv, Box 231 Fostnria. Ohio TW ELLS. Robert G. (G I) 528 Isabella Ave, Lock 4, Pa. (Coming Glass Works) TWYFORDS. LTD. Citile Vaie Potteries Stoke-on-Trent. England TYGART VALLEY GLASS CO. (E . A. Hinldns) Box 503 Washington. Pa. TYLER. W. S , CO. (C. E. Jenks) 3615 Superior Ave, N. E. Cleveland 14. Ohio Vol. .15, No. 10 (1956) TYRRELL. Miles E. (R; Box 412, Norris, Ter.a. (U. S. Bureau of Mines i TYSINGER. Ted \V. (Si R. R. 2, Thomasviile. N. C. (Cunningham Brick Co./ u UELTZ. H. F. G. (3 ) 39 West S t, Worcester. Mass. (Norton Co.) UHRMANN. Carl J. iG Fj Overlook C i, Belltre. Ohio (Arthur W. Schmid Co, Inc.i ULEMAN. Turrcll (G) 109 Virginia A ve, Aspinwall, Pa. (Pittsburgh Plate Glass Co.) ULRICH. Robert J. (E ) American Radiator 4 Standard Sanitary Carp. 1541 s. Seventh S t, Louisville S. Ky. UNION FRANAISE DES PRODUITS REFRACTAIRES (Louise Halm) 15, Rue de Milan, Paris 9e. France U N ITE D CLAY M IN ES CORP. (K. E. Ward) 101 Oakland St. Trenton 6, N. J. UNITED STATES GYPSUM CO. (Robert Hamilton) 300 W. Adams St. Chicago 6, 111. UNITED STATES STEEL CORP. (W . S. Debenham) 525 William Penn PI. Pittsburgh 30. Pa. U N IVERSAL CLAY PRODUCTS CO. (C. A. Bloor) Sandusky, Ohio UN IVERSAL DENTAL CO. (Joseph Kohn) 4gth 4 Brotvn Sts. Philadelphia 39. Pa. UNIVERSAL POTTERIES. INC. (H arrv E. Davis i Cambridge, Ohio UNIVERSAL-RUNDLE CORP. (A. L. Johnson) W. Keith McAfee Lab. Box 1268. Mahor.ingtown. Pa. UNIVERSAL-RUNDLE CORP. (H . P. Wangeiin) 3305 W. Forest Home Ave. Milwaukee 15. Wise. UNUM. Robert F. (W I) 311 Wilmington Ave, New Castle, Pa. (Universal-Rundle Corp.) URBAN, Stephen F. (3 ) 263 Hartford A ve, Xenmore 23, N. Y. (Titanium Alloy Div, National Lead Co.) UTAH FIR E CLAV CO. (C. n . Myers) Box 127. Salt Lake City 10. Utah UTZ. Donald (R) Kearrott Co, Ine. 142 Getty Ave, Clifton. N. J. V VAIL. Milford R. 4014 Spruce S t, Philadelphia 4. Pa. VALDES. Thomas H. (W) 431 Adeline St. Trenton. N. J. (Trenton Potteries Co.) VA LEN TIN E F IR E BRICK CO. DIV. A. P. GREEN FIR E BRICK CO. (W . H. Peterson. Jr.) Woodbridge. N. J. VALENTINE. Peter Cooney fM) Del Monte Properties Co. 620 M ark S t, San Francisco 4, Calif. VALYI. [Isabe E. (B) 20 S. Broadway. Yonkers 1. N. Y. (A. R. D. Corp.) VAN AKEN, Robert C. (W) Sperry Gyroscope Co. Div. Sperry-Rand Corp, 1P39 Great Neck, N. Y. VAN ALSTEN, Roy L. (RI) 9168 Sarasota. Detroit 39. Mich. (Ford Motor Co.) VANCE, Clarence E. 165 Miiky Way. Clemson. S. C. VAN CLEAVE. A. A. (R) 3100 UcGroarty S t, Suniand. Calif. VAN COTT. Harrison C. (B) R.R. 1, Horsehcads, N. Y. (Coming Glass Works) VAN DES BECK. Roland (BI) Research 4 Development Carborundum Co, Niagara Fails, N. Y. VA NDERBILT. R. T,, CO. (Ira E. Sproat! 230 Park Ave. New York 17. N. Y. VANDERMADE. Richard J. (R) 489 Willow D r, Pittsburgh 16, Pa. (Carborundum Co.) VAN DRESER. Merton L. (G) Owens-Coming Fiberglas Corp. Box 326, K ansas City, Kans. VAN DYKE. Orien W. (B) Magn Cove Barium Corp. Box 6504, Houston 5, Texas VAN GELDEREN. L. P. N. V. Ramie Union, Enschede, Holland VAN GORDON, Donald V. (M) Metal 4 Thermit Corp. Box 471. Rahway. N. J. VAN HORN. Harry T. (M) 741 Floral Park Rd. Franklin Square, N. Y. (Soccny Mobil Oil Co, Inc.) VAN HO UTEX . Louis A. Fabricacin Des Abrasivos S. A. Ave. Julio A. Roca 610 Buenos Aires, Argentina VANTCK, James S. (M) International Nickel Co, Inc. 67 Wall S t, New York 5, N. Y. VANNI, Ralph J. 1715 W arren Ave, Seattle 9, Wash. van N1EUWENBURG. C. J. Laboratorium voor Analytische Scheikunde (Microanalyse) de Vries van Heystplein 2 Del::. Netherlands VAN SCHOICK. Emily C. iX F ) S u te University of New York College of Ceramics, at Alfred Uoiv. Alfred. N. Y. VAN SCHOIK. Dickson M. (RI) 5950 S. Lake Shore D r, R. R. 2 Box 109. Whitehall. Mich. (Misco Precision Casting Co.! VAN TASSEL. R. H. (E) 527 Green Tree Rd, Kohler, Wise. (Kohler Co.) VAN VLACK. Lawrence H. (BI) Dept, of Chem. 4 Metal. Engineering University of Michigan Ann Arbor. Mich. vax WASSENKOVE. Pierre N- V. "De Sphinx" Maastricht. Holland VA.V W IGGEREN. Charles G. (W I) Siraonds Abrasive Co. Tacony 4 Fraley Sts. Philadelphia 37, Pa. VAN ZEE. A hur F. (G )- 3430 Inverness Ave, Toledo 7, Ohio (Owens-Illinois) VARSHNEI. Purshottam D. V. ?. Glass Works Ltd. Bahjoi, Dt. Moradabad. U. P. India VASILOS. Thomas (B) 424 W. Fourth S t, Elmira. N. Y. (Coming Glass Works) VAUGHAN. T. Carter (SI) 1522 Bedford R d, Charleston, W. Va. (W est Virginia Brick Co.) VAUGHAN. W. Harry (XFI) Cherokee Brick & Tile C o, Box 58 W aterrille R d, Macon, Ga. VEALE. Jack H. (R) 406 Rccdwood D r, Joliet. 111. (niinoia Clay Products Co.) VEIGA. Roberto A. Cermica Santa Helena Ltda. Rua 15 De Novembro 38 Paranagua, Parana. Brazil Roster 111 VENABLE. Charles R.. Jr. (RI) 1660 S. Oak, Bartlesville. Okla. (Phillips Petroleum Co.) VENABLE. Joe G. (G) Chattanooga Glass Co. Chattanooga 10. Tenn. pRB.V. Richard J. (M l Schweitzer Equipment Co. 376a Ridge Rd.. Cleveland 9, Ohio VESUVIUS CRUCIBLE CO. (Francis L. Arensberg) Box 3375 Swissvale, Pittsburgh 13, Pa. VICXERS. A. Eric J. "W ynnstay". Millfield Rd. Whickham Newcastle-upon-Tyne, England (Thermal Syndicate Ltd.) V ICTO R INSULATORS DIV.. I-T -E CIRCUIT BREAKER CO. (H . Failmezger; Maple Ave. Victor, N. Y. YID A N O FF, Richard B. (GJ) 902 Seventh Ave., Ford City. Pa. (General Electric Co.) V ID PL A N S. A. (D aniel Ferres I Real No. 4415, Montevideo, Uruguay VTDRIEHA M O N TERREY . S. A. (Alfonso F. Rodriguez) Apartado 163, Monterrey N. L.. Mexico VIGER. Burnett C. (G) 130 E. Third St.. Coming, N. Y. (Coming Glass Works) VILENSKY. Michel 3 . (R) 1S15 27th Ave.. San Francisco 22, Calif. (Ampex Corp.) VINAL, Francis E. (B) Radio Corp- of America 64 " A" St.. Needham Heights 94, Mass. VINCENT CLAY PRODUCTS CO. ( 0 . J. Whittemore) 615-19 State Bank Bldg. Fort Dodge. Iowa VIN CEN T, George L. (W I) R. R. 2, Box 79, Robinson, III. Case M anufacturing Corp.) UNTHER, E. Hcikcl Porcelainfabriken Norden Valby Langgade 95 Cooenhagcn. Denmark VISCONTI di MODRONE. Raimondo Soc. Ceramics Richard Ginori 1 via Bigii. Milan. Italv VITCLO. Sylvester A. (R I) Gen. Del.. Long Valley, N. J. (Austenal. Inc.) VITREOUS STEEL PRODUCTS CO. (E dgar H. Weil) Box 3991 Cleveland 20. Ohio VITRO MANUFACTURING CO. (Joseph 3oyce) 60 Greenway Dr. Pittsburgh 4, Pa. V O D IC K A . A lbert L. (E ) Aetna Poreelain Enameling Co. 4701 Augusta Blvd., Chicago 51, III. VOGEL. Ralph B. (M) National Lime & Stone Co., Carey. Ohio VON TURY. Francis J. (D F) Lehigh Ave.. Perth Amboy, N. J. (Vontury. Ine.) VO ORHIES. John H. (W ) 243 Arrow Hwy.. Claremont. Calif. (Pacific Tile 4 Porcelain Co.) VOSE. Wilfred Winstoncs' Roofing Tile Works Ltd. Box 2, Plimmerton, New Zealand VOSS. Raymond O. (G) - 26 Pershing St.. Coming, N. Y. (Coming Glass Works) VOSS. Wendell G. (E ) 27814 Rexford Rd., Bay Village, Ohio (Ferro Corp.) VRETOS, Epaminondas Institute of Chemistry Sc Agriculture "N. Caneilopoulos" of the Hellenic Co. Piraeus. Drapctsona. Greece VUKOVICH, Milan. Jr. (MI) 9 Dix Rd.. Woburn. Mass. (Godfrey L. Cabot. Ine.) Vol. 35, No. 10 (1950) w WACHTMAN. John B., Jr. (B) National Bureau of Standards, Div. 9.1 Conn. Ave. 4 Van Ness St., N. W. Washington 25, D. C. WAGGONER, Jack H. (GF) 240 Quentin Rd., N., Newark, Ohio (Fiber Glass Div., Pittsburgh Plate Glass Co.) WAGNER, 3 rucc F. (W ) 186 N. Vernon Ave., Pasadena 3, Calif. (B. F. Wagner 4 Co.) WAGNER, Harold C. (R) 968 Yellowstone Rd. Cleveland Heights 21. Ohio (Zirconium Corp. of America) WAGNER. Rio B. (D ) 1398 Brice Rd.. Reynoldsburg, Ohio (Pertna Flex Mold Co.) WAHL. Albert J. (W ) A. J. Wahl. Inc., 3 Central Ave. Brocton, N. Y. WAHLGREN, Wald A. B. Gustavsbergs Fabriker `Gustavsberg, Sweden WAINER. Eugene (W ) Horizons. Inc.. 2903 E. 79th St. Cleveland 4, Ohio WAITE. Virgil H. (E) 433 Beech St., Berea. Ohio (McGean Chemical Co.) WAIVER. Gedert J. (W ) 909 87th St.. North Bergen. X. J. (B. G. Corp.) W AKEFIELD . Richard E. B. (B) Hetherington. Inc.. 1200 Elmwood Ave. Sharon Hill. Pa. WAKELY. Wilbur T. (GJ) Sylvania Electric Products. Inc. 825 Lexington. Warren. Pa. WALDAL. James C. 2425 Second Ave.. W. Seattle 99, Wash. WALDEN. Albert 5. (R) National Carbon Co., Cleveland, Ohio WALDHAUER. William O. Savannah Terrace Apts., Apt. 25-C North Augusta. S. C. WALKER. Eugene E. (W ) 220 W. Sheridan Ave., New Castle, Pa. (Uaiversal-Ruadle Corp.) W A L X E R . Henry E. (G ) Harding Glass Co.. 5ta. B, Box 38 Fort Smith. Ark. W ALKER, Herbert M. (W ) Wallcer China Co., Solon Rd. Bedford, Ohio WALKER, John Morgan Crucible Co., Ltd. Battersea Church Rd. London, S. W. II, England WALKER. Warren W. (B) 29 Laurel PL. Upper Montclair, N. J. (Graphite Metallizing Corp.) WALKUP. D. H. (W ) Kilgore Ceramics Corp., Box 1619 Kilgore, Texas WALLA. Max R. (W ) Box 1369, Little Rock, Ark. (W inbum Tile Mfg. Co.) WALLACE. Arthur B. (W ) 410-8 E, State St.. Olean. N. Y. (Precision Ceramics, tnc.) WALLACE. Paul F. (B) Aluminum Co. of America Alcoa Research Labs., Box 772 New Kensington, Pa. WALSH. Doiuid S. (G) Consolidated Feldspar Dept., International Minerals Sc Chemical Corp. East Liverpool. Ohio WALSH REFRACTORIES CORP. (A. J. Tomasek) 101 Ferry St. St. Louis 7. Mo. WALTER. Jake J. 131 Stanton Ave.. Ames, Iowa W ALTON, Jesse D.. Jr. (E l 3304 Fairway Rd., N. E. Atlanta 19, Ca. (Engineering Experiment Station Georgia Institute of Technology) W ALWORTH, Chester A. (G) Libbey-Oweas-Ford Glass Co. Box 4273, Charleston 4, W. V. W AM BOLD. Jack i3 ) Ker.nametal. Ir.c. Llovd Ave.. Latrobe. ?a. W A M PLER, Roy W. (C ) Libbey-Owcr.s-Ford Giass Co. Technical Bldg , 1701 E. Broadway Toledo 5, Ohio WANG. Chan-huan Tektronix. Inc. Box 331. Portland 7, Ore. WANG, Franklin r . Y. Glasete Products, Inc. 20900 St. Clair. Cleveland 17. Ohio WANGELIN. K. P. (E) Uaiversal-Rundle Corp. 3305 W. Forest Home Ave. Milwaukee 15, Wise. WARD. George V. (R) McLain Fire Brick Co.. Div. of H. K. Porter Co.. Inc. Weilsviilc, Ohio WARD. George W. <C) Gustin-Bacon Mfg. Co. 210 W. Tenth St., Kansas City, Mo. WARD. John B. (X ) Coming Glass Works, Corning, N. Y. WARD. John F. (W ) 551 Chester PL. University Heights New Brunswick, N. J. (Rutgers University) WARD. K. E. (11) United Clay Mines Corp. 101 Oakland St.. Trenton 6. N. J. WARD, Mrs. S. Paul (M) 601 Mission St., South Pasadena. Calif. (S. Paul Ward, ine.) WARD. Thomas J. Box 3. Ogoensburg, N. Y. W ARDS. John M. (R) Union Carbide Ore Co. C arbide 8c C arbon B ldg. 30 E. 42nd St.. New York 17, N. Y. WARE. Robert K. 1407-3 Brackcnridge Ape. Lake Austin Blvd.. Austin 3, Texas W ARFIELD. Roben A. (G) 2460 E. Livingston Ave. Columbus 9, Ohio (Federal Glass Co.) WARRELL. Lincoln A. (R) Aluminum Co. of America 230 Park Ave. New York 17. N. Y. WARREN. George (E l) Ffaudicr Co.. Research Laboratory1000 West Ave.. Rochester 3, N. Y. WARREN. William R. 153 Hillside, Clemson, S. C. WARSHAW. Israel (B) Glass Research Div.- Pittsburgh Plate Glass Co. Creighton, Pa. WARSHAW. Stanley I. Georgia Tech., Box 4873. Atlanta, Ga. WARYGA. Casimer F. (R) 863 Colwyn Rd.. Jenkintown. Pa. (Frank Samuel & Co.. Inc.) WASHABAUGH. Grover C.. Jr. (M ) New Castle Refractories Co. New Castle. Pa. W ASHINGTON BRICK CO. Muirkirk. Md. WASHINGTON BRICK 4 LIM E CO. (W alter Senters) Box 2198 Spokane. Wash. WASHINGTON PORCELAIN CO. ( . R. Miller) Willow St. Washington, N. J. WASMAXN, Russell K. (R) Gladding, McBcan & Co. 1275 Harrison, San Francisco. Calif. R oster 113 W ATERS. Martin R. (\V I| 22 Rcil Rose Way, Levittown, Ta. (Wenczel Tile Co.) W ATKIN. Robert W. (W ) 2507 St. Clair Ave. East Liverpool, Ohio (Edwin M. Knowles China Co.) IrXl.N'S. E. Charles iW J Il Chapel Rtl.. S 3 J. Zanesville. Ohio (Mosaic Tile Co. ) W ATKINS, George B. (G) Libbev-Ouens-Ford Glass Co. 1701 S . Broadway, Toledo S, Ohio W ATKINS. Ray T. (Si C. S. Tariif Commission, Ceramic Oiv. Eighth 4 E Sts.. N. W. Washington 25. D. C. W ATKINS. Ens. Robert V. (1) BOQ 074, Room 275 NAS Pensacola, Fla. W A TK IN S. William E. (M il 636] Alderwood Rtl.. Cleveland JO, Ohio ( Ferro Corp.) W ATKINS. W. J. (M ) Kentucky Clay Mining Co. Mayfield, Ky. W ATSON. George F. (R ) American Brake Shoe Co. Metallurgical Lab., Mahwah, N. J. W ATSON. James F. Tabor. Iowa W ATT. Charles 1527 Piikoi St., Honolulu. Hawaii WATT. Loren (W ) W att Pottery Co. CrooksviUe. Ohio WATT POTTERY CO. (Loren Watt) CrooksviUe. Ohio WATTS, Arthur P. (R) A C Spark Plug Div., General Motors Corp.. Dept. J103 Flint, Mich. WATTS. Arthur S. (Honorary. W FI) Lord Hall. Ohio State University , Columbus 10. Ohio 'U FLE. Harold E. Gen. Del.. Alfred. N. Y. WAUGH. J. Stanley Mass. Inst, of Tech.. Bldg. 20 Rm. 20-C-001. Cambridge J?, Mass. W AXLER. Roy M. (G) National Bureau of Standards Conn. Ave. 4 Van Ness St.. N. W. Washington 25. D. C. W EATON, Ralph L. (G) St. Joseph Lead Co. Zinc Smelting Div., Monaca, Pa. W EAVER. Don S. Box 787. Alfred. N. Y. WEAVER. F. L. (R) Weaver Materiel Service, Cokey Bldg. Jamestown. N. Y. W EAVER. Harold L. (G) 303 Chestnut St., Port Allegany, Pa. (Pittsburgh Corning Corp.) W EAVER. R. A. (E F ) Ferro Corp., 4150 E. 56th St. Cleveland 5, Ohio WEBBER. John J. (R) 1210 Elco Dr.. Maumee. Ohio (Harbison-Walker Refractories Co.) W EBBERT. James C. 1331 E. 17th S.. Salt Lake City. Utah WEBER. Arthur W. (G) Corning Glass Works Corning, N. Y. W EBER. Berthold C. (B) 3833 Saranac Dr,, Dayton 9, Ohio (Aeronautical Research Laboratory) W EBER. Don A. (S) Deister Concentrator Co. 901 Glasgow Ave., Fort Wayne, lad. tBER. Kenneth E. (M ) 2514 Thayer St.. Evanston, 111. (O. Hommcl Co.) WEBER. Thomas W. 454 West Ave.. Sewaren. N. J. Vol. 35. No. 10 (1956) W E3STER. Charles E. (R l) 311 E. Beaver St.. Zelienople. Pa. (Lava-Crucible-Refractories Co.) WEBSTER, David (S) Polyehemicals Div. West Virginia Pulp 4 Paper Co. Boa 3J2. Charleston, S. C. WEDDELL. George G. (Ml 125 Beverly Rd., Pittsburgh 16. Pa. ( W estinghouse A tom ic Pow er Div.') W E E D Y . Robert C. (R ) Harblson-Walkcr Refractories Co. Box 957. Windham. Ohio W EEKS. Ben W. (M) Allied Trading Corp. 807 Commercial Bldg., Raleigh, N. C. WEHTJE, Ernst J. Box 369, Malmo 1, Sweden (AB Ifoverken 4 Skanska Cement) W EHTJE, Karl Fredrik A /B Rorstrands Porslinsfabriker Lidkoping. Sweden W EIDEL. Robert A. <G) 497 Apple Orchard Lane Webster. N. Y. (Bausch.4 Lamb Optical Co.) W EIDENBAUM. Sherman S. (G) 59 W. Second St., Coming, N. Y. (Coming Glass W orks) W EIDLICH. Gilbert (M) 640 E. Jefferson, Kirkwood, Mo. (Western Machinery 4 Engine Co.) WEIDMAN, V. Wesley (R) 201 Duncan Ave., Wilmington 3, Dei. (E . I. du Pont de Nemours 4 Co., Inc.) W EIGEL. Robert C. (R) 820 Woodlawn, Mexico. Mo. (Mexico Refractories Co.) WEIL. Edgar H. (E) Vitreous Steel Products Co. Box 3991, Cleveland 20. Ohio W EIL, Kurt E. Rua Batatais 472. Sao Paulo. Brazil W EIN STEIN . Alex (G) Ednaliie 'Optical Co.. Inc. 200 N. Water St.. Pcekskiil. N. Y. W EIN TRITT, Donald J. (M) 5122 Pine St.. Bellaire. Texas (Baraid Div., National Lead Co.) W EISE. Robert L. (G) 446 E. Second St.. Logan. Ohio (General Electric Co.) W EISEN SEEL, Charles W. Jackson Tiie Mfg. Co. 3ox 2C06. Jackson. Miss. W EISS. E. Joseph (B I) Dept, of Ceramic Engineering University of Texas. Austin, Texas W EISS, W. Russell (R ) WcUsville, Mo. (Wellsville Fire Brick Co.) W EISZ. Robert S. (B) International Telemeter Corp. 2245 Pontius Ave. Los Angeles 64. Calif. WELCH. A. Philip (B I) 7018 Glade Ave., Canoga Park, Calif. (Atomics International) WELCH. Archibald (S ) Cooksvilte Co.. Ltd. 1055 Yonge St.. Toronto. Ont.. Canada W ELCH. James S. American Ceramic Society 4053 N. High St., Columhus 14. Ohio WELCH, John C , Jr. (B) 110 Escalona Ct., Santa Cruz, Calif. (A. P. DeSanno & Son) WELCH. Richard L. (R ) Dominion Firebrick 4 Clay Produets (1934) Ltd. Claybank, Sask.. Canada WELLER. Harvey C. (G) Surface Combustion Corp. 2373 Dorr St,, Toledo 1, Ohio WELLING. Charles E. (R) Ford Motor Co.. Scientific Lab. Engr. Staff. Box 2033. M B Station Dearborn. Mich. WELLS. A. A. (W F) Homer Laughlin China Co. Neweil. W. Va. W ELLS. J. M. (W ) Homer Laughlin China Co. Newell, w . Va. WELLS, Ralph G. ;3 ) University of Michigan E. Engineering Bldg., Rm. 4201 Ann Arbor. Mich. W E L S H A N S. L. T. R) Diamond Alkali Co., Cenicnt-Coke Div. 300 Union Commerce Bldg. Cleveland 14. Ohio W ELTE. Ralph J. (S) Summit Pressed Brick 4 Tile Co. Box 533. Pueblo, Colo. W ELTERLEN , James D. (R J) 4630 Zane St.. Los Angeles J2, Calif. (Gladding. Mc3ean 4 Co.) WENCZEL. C. (W) Wenczel Tile Co.. Box 908 Trenton. N. J. W ENCZEL T IL E CO. (C. Wenczel) Box 908. Trenton, N. J. W EN DT, Nelson E. (M) American Potash 4 Chemical Corp. 595 Foch Blvd., Williston Park. N. Y. W ENGER. James A. L. Messrs. Wengers Ltd.. Etruria Stoke-on-Trent. Stafford. England W ENNING. W. F. (E) Ceramic Color 4 Chemical Mfg. Co. Box 297, New Brighton, Pa. W EN TZ. B. B. (S) Beiden Brick Co. 700 W. Tuscarawas St.. Canton 1. Ohio W ERKEMA. Thomas E. (S) Dow* Chemical Co.. Midland. Mich. W ERN ER. Alan J. (G) 139 W atauga Ave., Corning, N. Y. (Corning Glass Works) WEST, Frank Haslemere Greenlane Buxton, Derby, England (Derbyshire Silica Fire 3rick Co.) WEST. Howard r. (R) Illinois Clay Products Co. 68 N . Chicago 5:.. Joliet, ill. W EST. Richard R. (3 ) Box 492, Alfred, N. Y. (State University of New York. College of Ceramics) WESTBROOK. J H. (B) General Electric Co., Rm. 3124 Research Laboratory, The Knoils Schenectady, N. Y. W ESTE R N B R IC K CO. (I. R. Cline) Danville, 111. W ESTERN ELECTRIC C O . INC. (J. W. Scott) 7630 Hawthorne Station Chicago 23. III. W ESTERN ELECTRIC CO.. INC. (W . J. Scott) 2323 Shadeland Ave. Indianapolis 6, Ind. W ESTERN FELDSPAR -MILLING CO. (V. E. Magnuson) Box 671 Salida. Colo. W ESTINGHOUSE ELECTRIC CORP. (John D. Harnish, Jr.) Derry. Pa. W ESTLAKE. C. Rogers (W I) 1961 Christmas Run Blvd. Wooster, Ohio . (Shreve Manufacturing Co.) WESTMAN, A. E. R. (GF) Dept, of Chemistry Ontario Research Foundation 43 Queen's Park Crescent Toronto -5. Ont-, Canada W ESTM ONT. O. B. (R ) Jobna-Manville Products Corp. Lompoc. Calif. W ESTON. Ralph H. (S I) Arkctex Ceramic Corp.. Brazil, Ind. WEST VIRGINIA BRICK CO. (Claude F. Wiseman) Box 1071 Charleston. W. Va. R oster 113 W EY L, Woldemar A. (GF) Div. 01 Mineral Technology Pennsylvania Stale University University Park. Pa. W HALEN. Thomas J. Hilltop Park. Box 5. State College. Pa. IHA LLON . William P.. Jr. (M l GloLar Div., Carborundum Co. 3702 W. Bcverlv Dr., Dallas, Texas W H E E L E R , D. D. (\V) Titanium Alloy Mtg. Div. NationaJ. Lead Co. Ill Broadway, New York 6, N. Y. W H EELER . William H. (R l) M artin A ircraft Co., Engr. Lab. M artin Mail 366. Baltimore 3. Mil. W H EELIN G STEEL CORP. (Ernest 3. Snyder) Steubenviile South Plant Steubenville, Ohio W HELAN. Paul T. (Ri 11 Florence Terr., Watertown 72. Mass. ( Watertown Aresenal) W H ERRY . Allen P. (E l) 9652 Oakdale Rd., Parma 29, Ohio ( Hunter-Thomas Assoc.) W HITACRE. D. D. (R) W hitacre-Greer Fireproofing Co. Wayr.esburg. Ohio W HITACRE-GREER FIR E PR O O F IN G CO. (D . D. W hitacre) Waynesburg, Ohio W H IT ACRE, Maxwell L. (M ) Carborundum Co.. Buffalo Ave. N iagara Falls. N. Y. W HITAKER. Fred A. (W I) 431 Oak Ridge Rd.. Clark. X. J. t General Ceramics Corp.) W HITA KER. H. Rustless Iron Co. Ltd., Lawkholme Ln. Keighley. Yorks, England W HITA KER. L. R. (SFI) Carolina Ceramics. Inc., R. R. 3 Columbia, S. C. W H IT E . Frank L. (G) 12147 Manor, Detroit 4, Mich. ; F o rd M otor Co.) W H IT E . Georgs D. (3 ) 22S E. Drive. Oakridge. Tenn. (Carbide Jc Carbon Chemical Co.) W H IT E . Harold E. (R FI) R. R. 6. "Windy Knoll." Butler, Pa. .L av a Crucible-Refractories Co.) W H IT E . J. F. (B) 29 Id Arrowoou Dr.. Cincinnati 31. Ohio t General Electric Co.) W H ITE . Jonathan S. (W ) 1302 Singer PI. 'Vilkinsburg. Pittsburgh 21. Pa. (Stupakoff Div.. Carborundum Co.) W H IT E . O'Mara (G ) 642 Fairmont-Ave., Westfield, N. J. (Carborundum Co.) W H ITEH EA D . Leland E. Box 6122, Virginia Tech. Sta. Blacksburg, Va. W H ITE H E A D . Merlin H. (E) Columbian Enameling & Stamping Co. T erre Haute, Ind. W H ITE SEL L, Lysie E. (R) Welt.sville. Mo. (W eilsviile Fire Brick Co.) W H IT FIE L D . Robert E. (R) Chas. Taylor Sons Co., Box 58 Annex Station. Cincinnati 14. Ohio W HITFORD . Robert F. (R) N orth American Refractories Co. Ashland, Kv, W H IT F O R D . William G. (O F) Box 38. Olympia Fields. III. (University of Chicago) W H IT N E Y . Earl J. 39 W. Fifth St.. Corning. X. Y. V H IT N E Y . Eugene H. (R> Gladding. McBean & Co.. Box 3152 Seattle 14. Wash. W H IT N E Y . John B. (E ) 317 N. Bonner Ave., St. Matthews, Ky. (General Electric Co.) VOL. 35, No. 10 (1956) W HITSON. Ralph E. (W) Aluminum Co. of America Box 300, Bauxite, Ark. W HITSON. Richard E.. Jr. (Gl Dominion Minerals, Pincy River. V'a, WHITTAKER. Clyde M. (W ) Box 960. New Castle. Pa. (Universal-Bundle Corp.) W HITTAKER. G. Ward (W> Union Meeting Rd., Gen. Del. Bluebell, Montgomery County, I'a. (Universal-Rundle Corp.) WHITTEMORE. J. W. (SFI) Virginia Polytechnic Institute Blacksburg, Virginia W HITTEMORE, O. J. (S) Vincent Clay Products Co. 615-19 State 3ank Bldg. Fort Dodge. Iowa WHITTEMORE. 0 . J.. Jr. (R I) Norton Co., Worcester 6. Mass. W HITTEMORE. Russell G. (G) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22, Pa. W HITTLE. F. F. (W ) 1158 W. W ater St., Elmira, X. Y. (Westinghouse Electric Corp.) WICKE, Warner C. (W ) General Electric Co., One River Rd. Schenectady, N. Y. WICKS, John Simison (E) Fairground Rd., R. R. I Fern Creek, Ky. (General Electric Co.) WIEGAND, Frank R. (BJ) Box 732, Ft. Huachuca, Ariz. (U. S. Army) W IKER. Richard M. (G) 206 Rand Ave., Painted Post, X. Y. (Corning Glass Works) WILANSKY. Harold (G) 67 Sterling St., Corning, N. Y. (Coming Glass Works) WILCOX. Herman G. (R) 800 Ross Ave.. Pittsburgh 21. Pa. (Harbison-Walker Refractories Co.) WILCOX. James W. (S) Alliance C ay product Co. Alliance. Ohio WILCOX, Paul D. 59 S. Grant St.. Midvale. Utah W ILDER. David R. 1212 S. Third St.. Ames. Iowa W ILKE. William P.. I ll (M) Hammond Lead Products. Inc. 5231 Hohman Ave., Box 912 Hammond. Ind. WILKERSON. Roben L. (W ) Crescent Concrete Products Corp. 2933 Dauphine St.. New Orleans. I.a. W ILKES. Gordon B. (RF) Box 131. East Orleans, Mass. W ILKINS. E. D. Kaiser Bauxite Co. Spur Tree. Jamaica. B. W. I. W ILKINS. Ian Hugh (W) 325 Old Q uarry Rd. Kingston, Ont-, Canada (Frontenac Floor 4 Wall Tile. Ltd.) WILLARD. Henry G. (MJ) General Electric Co. Plainville. Conn. WILLEMS. H. W. V. (G) 1513 Pacifie Ave., Brackenridge, Pa. (Pittsburgh Plate Glass Co.) W1LLIAMMEE. G. Darby (R ) R. R. 6. York. Pa. (J. E. Baker Co.) WILLIAMS. Alan B. (RI) 105 McCarthy Dr.. Augusta, Ga. (Babcock 4 Wilcox Co.) WILLIAMS. Arthur E. (G) 1214 Eighth St., Monndsville, VV. Va. (Fostoria Glass Co.) WILLIAMS. Charles (E) 131 North St.. Aubum, X. Y. (U . S. Army) W ILLIA M S, Clyde (RF) Battelle Memorial Institute 505 King Ave.. Columbus 1, Ohio W ILLIAM S. George F. (Gl Owens-Illinois. Technical Center 1700 N. Westwood Ave.. Toledo 1, Ohio W ILLIA M S. Cordon R. (W ) Box 136, Florence, Ala. (Stylon Southern Corp.) W ILLIA M S, Harry M. (W I) Insulator Dept.. General Electric Co. Charles 4 Cromwell Sts.. Baltimore. Md. W ILLIA M S. John A. (W ) Box 250, Trenton 2, N. J. (Mitchell-Bissei! Co.) W ILLIA M S. John C. (W ) Mt. Vernon Way. Whippany, N. J. (Beil Telephone Labs.) W ILLIA M S. Leroy L.. Jr. (E l) 3006 Adams Ave.. Evansville. Ind. (Wbiripool-Seeger Corp.) W ILLIA M S. Lloyd D. (G) Corning Glass Works, Fallbrook Plant Coming. N. Y. W ILLIAM S. Robert A.. Jr. (W ) American Encaustic Tiling Co., Inc. 1000 N. Cannon Ave., Lansdalc. Pa. W ILLIA M S. Robert B. (W ) 1107 Westwood Ave. Chattanooga, Tenn. (American Lava Corp.) W ILLIAM S. Roben E. 1800 Crosby Rd., Carrollton, Texas W ILLIA M S. Robert M. (R I) 5809 Royal Oak Ave., Baltimore, Md. (General Refractories Co.) W ILLIAM S. W alter E. (MI) New Castle Refractories Co. New Castle, Pa. W ILLIS. James 3. (E) 1355 Crofton Rd.. Baltimore 12, Md. (Pernco Corp-) W ILLM O R E, Tracy A. (R) 1118 W. Illinois St., Urbana. 111. (University of Illinois) W ILLS. Robert E. (R) Box 220, Coal City, Illinois (Illinois Clay products) W IL L S O N PR O D U C T S. IN C . (Thomas A. Willson) Box 622 Reading, ?a. W ILL SO N . Thomas A. (G) Willson Products. Inc.. Box 622 Reading, Pa. W ILSO N , Bonum S.. Jr. Box 1105. Clemson. S. C. W ILSO N . Calvin S. (G) Libbey Glass Div., Owens-IUinios Ash St. 4 Wheeling R.R. Toiedo 1. Ohio W ILSON. Charles L. (S) 217 N. Meridian St.. Brazil, Ind. (American Vitrified Products Co.) W ILSON. George (R) 131 Edison Ave., New Castle, Pa. (New Castle Refractories Co.) W ILSON. Homer W. (S) Delaware Clay Co. Box 352. Delaware. Ohio W ILSON. Hugh H.. Jr. (BI) Clemson College, Olin Halt Clemson. S. C. W ILSON. Maurice S. (R) Reynolds Dr., R. R. 2, Box 261 W allingford. Conn. (American Refractories 4 Crucible Corp.) W ILSO N . Robert Charles (W I) 791 Wedgewood Dr., Apt. 3 Columbus 4, Ohio (Ohio State University Engineering Experiment Station) W ILSO N . Robert F. (G) Durakool, Inc. 1010 X. Main St., Elkhart, Ind. W ILSO N . R. T. (S) Ferris Brick Co.. Box 188 Ferris. Texas R oster 117 WIN BURN, H. L. (S) Bax 1369, Little Rock. Ark. (Winburn Tile Mfg. Co.) W INEM ILLER, William F. <R) 11 Ardmore Road, Worcester 9, Mass. Norton Co.) \ ILER, Reno -cranica Winkler Rua I de Marco 119, 3 andar Rio de Janeiro, Brazil a :.-:.;h ! p . U e c. (c> Syivania Electric Products. Ine. Emporium. Pa. W INTER. Aciuta Institut d'optique Thorique et Applique, 3, Bld Pasteur Paris (15*) France W IRTH . David G.. Jr. 618 E. Daniel St.. Champaign. 111. W ISCONSIN PORCELAIN CO. IL. A. Stohl ) 120 Lincoln St. Sun Prairie. Wise. W ISE. L. G. (B) E. I. du Pont de Nemours & Co,, Inc. Chemical Dcpt., Experimental Sta. Wilmington, Del. W ISEMAN. Claude F. (S) West Virginia Brick Co. Box 1071, Charleston, W . Va. W ISHO SXI. I. Stanley (R ) Industrial Heating 1400 Union T rust 3 Idg. Pittsburgh 19, Pa. W ISS. J. E. (MFI) 1339 Lincoln Rd., Columbus 12, Ohio (Consultant) WITMER. Frank (G) 612 W. Main St., Woodville. Ohio ( Ohio Lime Co.) W ITSCHEY. Ray A. (R) A. P. Green Fire 3rick Co. Mexico, Mo. V - T E R . Raymond 3. Ixlificio Gaiipan, A-3-C. Au. Miranda zi) Rosai. Caracas, Venezuela t Fabrica de Productos Ceramico*) W ITUCKI. Robert M. (C i 4 W. Fifth St.. Corning. N. V. (Corning Glass Work s W ITZEM ANN. A. W. (W ) 220 Allegheny Ave.. Kittam-.mg. ?a. (E ljer Co.) W OLCOTT. J. David 3S Washington St.. Homell. N. Y. WCLD, T. (W) Smith & Stone. Ltd. Georgetown. Ont., Canada W OLFEXSPERGER. R. S. (Ri Carborundum Co. 2600 Neville Rd., Pittsburgh 23, Pa. W OLKODOFF. Vladimir E. (Bi Carborundum Co. Buffalo Ave., Niagara Falls, X. Y. W OMELDORPH. R. C. <G> (3 T aft Ave.. Providence. R. I. WONGSOREDJO. Rasraadji Balai Penjelidikan Keramik (Ceramic Institute) Djl. Raya Timur 340 Bandung, Indonesia WOOD. Clifton E. (W ) 312 E. Ellen, Fenton, Mich. (A C Spark Plug Div.. General Motors Corp.) WOOD, Kenneth T. (R) 102 Grace Blvd.. Painted Post. N. Y. (Corning Glass Works) WOOD, Lleweilyn. Jr. ( S i Carrington Woods. R. R. 4. Box 209 iMiUcdgeville. Ga. (Oconee Clay Products Co.) WOD, Russell K. (W I) 3900 E . California St. Pasadena 10, Calif. (Wallace China Co.. Ltd.) V o l. 3. Mo. 10 (1930) WOODBRIDGE, Thomas C. 38 Stirling Rd. Hayes. Middlesex. England (British Bath Co. Ltd.) WOODRUFF, Calvert M. (W i American Nepbeline Ltd. Xephton via Lakeneld, Ont.. Canada WOODRUFF, Ernest W. (R) Refractory Products Co. 910 Custer Are., Evanston. 111. WOODS. C. J. I.Xl North American Philips Co., Inc. Research & Control Instruments Div. 730 S. Fulton Ave., Ml. Vernon. N. Y. WOODS. Hubert (B) Portland Cement Assn. 33 W. Grand Ave.. Chicago 10, 111. WOODS. William J. (M) Pennsylvania Glass Sand Corp. Box 627, Lcwistown, Pa. WOODS. William J.. Jr. (M) Pennsylvania Pulverizing Co. Two Gateway Center Pittsburgh 22, Pa. WOODVILLE LIME PRODUCTS CO. (J. Robert Cowell, J r .) . 2140 Jefferson Ave.. Toledo 2. Ohio WOODWARD. Roger (I) 861 Euclid Ave.. Elmira, N. Y- WOODWARD. Thomas R. (S) 2558 Oakwood Ave., Zanesville. Ohio (Elgee Potteries, Inc.) WOOLDRIDGE, Morris L. (R) Owens-Coming Fibergias Corp- Glass Research. Newark. Ohio WOOLEY. Seward E. (RI) 18 E. Brown St.. Somerville. N. J. (Johns-Manvitle Research Center) WOOTEN, John H. (S) Elgin-Butlcr Brick Co.. Elgin. Texas WOOTEN. Richard M. (G) 207 M ayfair Rd.. Nashville. Tenn. (Ford Motor Co.) WORCESTER ROYAL PORCELAIN CO- LTD. (Joseph F. Giroson) Royal Porcelain Works Worcester. Engiand WORCESTER, W. G. (XFI) 720 Sask. Crescent E. Saskatoon. Sask.. Canada WORK. Lincoln T. (B) 36 W. 44th St.. Rm. 80" New York 36. X. Y. (Consulting Engineer I WRIGHT. D. K. rE) American Smelting & Kenning Co. 120 Broadway. New York 3. X. Y. WRIGHT. Edward P. (W I) Box 387, East Liverpool. Ohio (Tavlor. Smith & Tavlnr Co.) WRIGHT, J. E. Messrs. A. G. Hackney & Co., Ltd. Fairfield Pottery. Hanley Stoke-on-Trent. Engiand WRIGHT. John C. c/o Mrs. Sutton. Alfred Station, N. Y. WRIGHT. J. W. (GI) 2703 Densmore Dr.. Toledo 6. Ohio (Owens-IUindisl WRIGHT, Roy E. (X) Philadelphia Quartz Co. of Calif. Sixth & Grayson St. Berkeley 10. Calif. WUELLNER. Joseph F. (E) 1602 Galion Ave., Cleveland 9. Ohio (Ferro Corp.) WURTSBAUGH. C. G. (WI Glostex Chemicals, Inc. 3056 Bandini Blvd. Los Angeles 23, Calif. WYATT. Bradley W . (S) Pacific d a y Products 9500 S. Norwalk Blvd. Los Nietos, Calif. WYCKOFF. W. R. (R) Joseph Dixon Crucible Co. 167 Wayne St.. Jersey Citv 3. N. J. WYGANT. James r . (R I) Standard Oil Co. (Indiana) Engineering Research Dept. 2400 New York Ave.. Whiting, Ind. WYNDHAM-QUIN. Francis H,, Jr. (S i Box 305. Avonmore, Pa. (General Refractories Co.) WYSONG. Charles ?. ( 3 ) 425 Clay S:., Marietta, Ga. (Georgia Institute of Technology) WYSOR. D. C. R) Genera! Chemical Division Allied Chemical Dye Corp* 40 Rector St.. New York 6. N. Y. y YAMAGUCHI, Mitsuo (W) 72 Oakwood Ave., Arlington, N. J. (Noritake Trading Corp.) YAMAMOTO. Hideo (G) 305 W. S9th St.. New York 24. N. Y. (Asahi Glass Co., Ltd.) YAMASAKI, Kazuo Chemical Institute. Science Faculty Nagoya University Chikusa, Nagoya, Japan VA.MA17CHI. T, Tokyo Kogyo Daigaku (Tokyo Institute of Technology) Ookayama. Meguro-Ku, Tokyo, Japan YAM IN . Michael (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13. Pa. YARTE. Andrew A. (W ) Productus Cermicos, S. A. Apartado 486, Monterrey, N. L., Mexico YARTE. Eugene A. (W ) Industrias Procesa. Apanada 436 Monterrey. N. L. Mexico YAVORSKY. Paul J. (B) McDane! Refractory Porcelain Co. Beaver Falls. Pa. YAWITZ. Murray (G) Fish-Schurman Corp. 70 Portman Rd., New Rochelle, N. Y. YEATER. Roy G. (G) Fostoria Glass Co.. Moundsville, W. Va. Y O S H IK I. 3 um pel 304 Tsurumi-cho. Tsurumi-ku Yokohama. Japan (Asahi Glass Co.) YOL'MANS. Robert M. Box 4264. Georgia Tech.. Atlanta. Ga. YOUNG. David A. (S) Cloud Ceramics. Concordia, Kansas YOUNG. George R. (G l emuth Glass Works. Inc.. Box 629 Parkersburg, W. Va. YOUNG. Howard S. (B) R. R. 1. Cbadds Ford. Pa. (E . I du Pom de Nemours & Co.. Inc.) YOUNG. James John G. Stein Sc Co. Ltd. Manuel Works. Linlithgow. Scotland YOUNG, James E. (S) Structural Clay Products Research Foundation. Ge'neCa, III. YOUNG, John C. (G) Portuguese 3end Club Portuguese Bend. Calif. (Hayward Scientific Glass Corp.) YOUNG. Lloyd G. (G) Corning Glass Works, Corning. N. Y. YOUNG. Robert W. (G) American Optical Co. Glass Research Lab. Sonthbridge, Mass. YOUNG. Stanley H. (RI) Cleveland Quarries Co., Amherst. Ohio YOUNG. Taek Shik 32-89 Chengpa Dong Yong San Koo Seoul, Korea YOUNG. Vincent M. (G) Bausch & Lomb Optical Co. 635 St. Paul St.. Rochester 2, M. Y. YOUNG. Willard G. (W I) Case Manufacturing Corp. 1000 W. Pine St., Robinson, III. R oster ! lfi YOUNG. \V. O. (W I) 6 Livingston St.. Honeoye Falls, N. Y. (Victor Insulators Dir.. I-T-E Circuit Breaker Co.) YOUNGBLOOD. Charles J., Jt. (C) Mississippi Glass Co. 88 Angelica St., St. Louis 7. Mo. pU X T, Richard V. (G't C. Tennant Sons it Co. 100 P ark Ave., New York 17. N. Y. YU TZEY . M arvin G. (D ) Fostoria Glass Co., 1200 F irst St. Moundsville. \V. Va. z ZAHN. William A. (W ) 10 Church St., Matawan. N. J. (Atlantic Tile Mfg. Co.) ZAHNISER. Geo. B. (W ) Shenango China, Inc., New Castle, Pa. ZANOWIAK, Peter P. (S) SIS S. E. 31st St. Mineral Wells, Texas (Texeramics Inc.) ZAPFE. Richard C. (W ) 162 Penneld St., Pomona, Calif. (Pomona Tile Mfg. Co.) ZARBO. George (G) 88 Melrose St.. Vineland. N. J. (Kimble Glass Co.) ZAVIS. Lewis (W ) 11012 S. Chanera, Inglewood, Calif. (H . F. Coors Co.. Inc.) ZEIIRLAL'T, Herbert A. R. (R) Calcium Atuminate Cement Corp. 232 E. 86th St., New York 28, N. Y. ZEILLER. Irwin F. (M) ISO Mason Dr. Manhasset, Long Island, X. Y. (B. F. Drakenleid 4 Co., Inc.) ZELLER CORP. (R. E. Costello) Fort Wayne Rd.. Deance, Ohio ZERFOSS. Samuel iBF) Mineral Products Div. National Bureau of Standards Washington 25, D. C. ZICKEFOOSE. Ellis J. (R) Gridin Wheel Co. 445 N. Sacramento Blvd. Chicago 12, III. ZIEGFELD, Roben L. (M) Lead Industries Assn. 60 E. 42nd St., New York 17. N. Y. ZIEGLE. Glenn D. 40954 W. University. Champaign. 111. ZIMAR. Frank (G) Corning Glass Works Main Lab., Coming, N. Y. ZIMMER. David C. (WF1) 513 Harding Rd., Zanesville. Ohio (Nelson McCoy Pottery Co.) ZIMMERMAN. Philip D. 611 W. Fayette Ave., Edingham, 111. ZIMMERMAN, William F. (B) 3836 McNlcholas St. Cincinnati 36, Ohio (General Electric Co., Gas Turbine Div.) ZINK. George H. (E l) A. O. Smith Corp. 3535 N. 27th. Milwaukee 16. Wise. ZINK. Harold F. (G) Owens-Illinois, 1700 N. Westwood Ave. Toledo 1, Ohio ZLOCK, Evan ?. (G) I-T-E Circuit Breaker Co. 601 E. Erie Ave.. Philadelphia 34, Pa. ZLOTNICK. Herber: (BJ) 7902 3ay Pky.. Brooklyn. N. Y. ZNEIMER, Joel E. (B I) 108 Dull St., Watertown. Mass. (Raytheon Mfg. Co.) ZORZI, Eugene R. (M) C. Tennant, Sons & Co.. 100 Park Ave. New York 17. N. Y. ZUDNAK, Stephen J. (W ) Box 1599, Trenton, N. J. (General Porcelain Co.) ZUMWALT, Donald A. (E ) 6904 E. Slauson Ave. Los Angeles 22, Calif. (California Metal Enameling Co.) ZVANUT, Albert J. (B) Lincoln Electric Co. 22801 St. Clair Ave.. Box 3115 Cleveland. Ohio ZVANUT. Frank J. (Ml) 14533 Bayea Ave., Lakewood, Ohio (Godfrey L. Cabot, Inc.) ZWERMANN. Carl K. (BF) 806 W . Main St., Robinson, HI. ZWETSCK. Artur Villeroy & Boch M ettlach/Saar, Germany Addenda AMERICAN CYANAMID CO. MrGREGOR. Jimmie R. (H. C. Mitton) Prather Hall. 3m. 344-3 30 Rockefeller Plaxa. New York, X. Y. Austin 18, Texas BAAK. Tryggve (G) 1321 Old BoaJsburg R<1. ME1NDL. Joseph J. 601 \V. University. Urbana. III. State College. Pa. (Pennsylvania State University) MEXTZER. Merle J. 406 E. Springfield Are. BART. Ronald K. Champaign, III. S03 W. Washington. Champaign, III. BOWMAN. George A. 402 E. Armory, Champaign. III. MURPHY. Leone l*. 100S S. Lincoln Are.. Urbana. 111. NIELSEN. Thomas H. DAVILA, A. E. Fernandez 406 W. Oregon, Urbana, III. Londres 1122 Longchamps-FNGR. Argentina (Ferro Enamel S. A.) PLATT. James (S) Structural Clay Products Institute 2556 Clearview Ave. X.W. GILBERT. Frank C. Canton, Ohio Box 827. Alfred. X. Y. \p. William O. <R) POTTER. Charles IG) Amersil Co., 685 Ramsey Ave. iox 172, Ranson. W. Va. Hillside. N. J. (Standard Lime St Cement Co.) KARNER. Em est F. PO W ELL H. Eugene (G) 1061 Michigan Ave.. Maumee. Ohio 806 S. Fifth St.. Champaign, 111. (Kimble Glass Co.) 120 Roster ROACH. W ilfred H. (G) ' " 112 Renwick Ln.. Horseheads. N. Y. (Westingnousc Electric Corp.) SCHAEFER. Earl F. (G) 2129 Radford Dr., Toledo 14, Ohio (Owens-Illinois) SEELEY. Clarence E. (G) Glass Products Co. 6911 S. South Chicago Are. Chicago 37, 111. TAYLOR. Alan W. (B) Pennsylvania State University Dept, of Ceramic Technology University Park. Pa. WEST-ORAM. Francis G. II Walnut Ln,, Hartford Northwich. Cheshire. England (Imperial Chemical Industries Ltd.) W tX GERTER. Donald B. (R ) 254 Oxford Ave.. Fair Haren. N. J. ( Johns-Manvillei WRIGHT. Phil (W ) Taylor. Smith A Taylor Co. Chester. W. Va. C eramic Bulletin