Document 5kmaveZQG7MEbXBR9oYrp6bN4

FILE NAME: Curtiss-Wright (CW) DATE: 1956 DOC#: CW007 DOCUMENT DESCRIPTION: Bulletin - American Ceramic Society 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 U Product Manager Ceramic Information Center 735 Ceram ic Place Westerville. Ohio 43081-8720 614 890 4700 TWX: 7101109409 P LA IN T IF F S EXHIBIT P LA IN T IF FS EXHIBIT Q H 9Zu2U 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 American 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 a t 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 a t 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 VOL. 3, NO. U (105(11 29 Membership Roster The American Ceramic Society i*i:s R oster of m em bers is published only for the use of members of The American Ceramic Society. Listings are in alphabetical ie r. A separate R oster for the N ational In stitu te of Ceramic Engineers, showing grades of membership, is on pages R-L21 to R-125 this issue. New m em bers received too late to be included are listed in the A ddenda on page R-120. T hese listings give the m em ber's preferred mailing address. Where this is n o t his business address his com pany connection is shown parentheses. Divisions and other Society affiliations are indicated in parentheses following each nam e, in accordance with the code en below. T he absence of an y such designation indicates th a t the mem ber is from outside the United S tates or a stu d en t member, ither of which has Division affiliation. B--Basic Science Division D-- Design Division E-- Enamel Division G-- Glass Division M --Materials and Equipm ent Division R--Refractories Division S--Structural Clay Products Division W-- W hite Wares Division X -- No Division affiliation F-- Fellow of T he American Ceramic Society J--Junior Member I-- National In stitu te or Ceramic Engineers A 3BEY, R. G. (G) General Refractories Co. 1520 Locust St., Philadelphia 2, Pa. 3BOTT. Gordon H . Reck Enamel (Pry.) Ltd.. Box 77 Industria, TVL Union of South Africa 3E, Tosio 1001. Xami-ikegami-eho, Ota-ku Tokyo, Japan (Tokyo Shibaura Electric Co.. Ltd.) 3ERNETKY. Lonnie L. (BI) Argonne National Lab. D22-2 Metallurgy Box 299. Lemor.t. 111. BINGDON PO TTERIES. INC. ' r. M. Lewis) 301 N. Mam St. qgdon. III. i. IS. Marvin E. <W) Sentry Sanitary Corp., Box 427 Mannir.gtor.. \V. Va. 3RAM SON, Isaac Av. Copacabana, 959-Apto. 902 Rio de Janeiro. 3razi". (KJabir. Irmaos It Cia.) BRILLE. A. Villa _ San Miguel Brewery, Inc.. 1112 Aviles Manila. Philippines CCOUNTIUS. Oliver E. (R) 118 E. Carter St.. Sierra Madre. Calif. (Aerojet-General Corp.) CHAUER. L. A. (S) Natco Corp., East Canton. Ohio CHUFF. Charles E. (W ) 839 S. 3allas Rd.. Kirkwood 22, Mo. (Certain-Teed Products Corp.) -CME BRICK CO. (George Puls) Box 425, Fort W orth. Texas i C SPARK PLUG DIV.. GENERAL MOTORS CORP. (K arl Schwartzwalder) Flint 2. Mich. iDAMS CLAY PRODUCTS CO. (James A. Cunningham) 3ox 226 Martinsville, Ind. iDAMS. David E.. Jr. (W) 830 Spring St.. Latrobe, Pa. (C arborundum Co.) vDAMS. Earl E. (W ) National Plumbing Pottery, Inc. Zanesville. Ohio 1DAMS. Edward M. (S) Murray Tile Co.. Inc. Cloverport, Ky. VDAMS. Milton (G) '9 W. Stretcher S t, Toledo 8, Ohio libbey-Owens-Ford Glass Co.) Vu...>tS. P. Bruce (G) Coming Glass Works Research and Development Corning. X. Y. Vol. 35, No. 10 (1956) ADAMS, S. L. (G) Joseph E. Seagram 4 Sons, !ne. Seventh St. Rd.. Louisville 1, Ky. ADAMSTON FLAT GLASS DIV., ROLLAND GLASS CO. Box 631, Clarksburg. W. Va. ADCOCK, Albert S. (W I) _ American Radiator & Standard Sanitary Corp.. 6920 Franklin Ave. New Orleans 22. La. ADCOCK, Lawrence \V,, Sr. (W ) 562 E. Main S:.. Logan. Ohio (Logan Pottery Co.) ADCOCK. Lawrence \V.. Jr. (\V) 1547 Empire Rd.. Wickilrfe. Ohio (Clevite Corp.) ADDERLEY, James R. 42 Church St.. Brieriey Hill S. Stafford. England (E. J. 4 J. Pearson Ltd.) ADERHOLD, George H. (W ) Saxonburg Ceramics, 3ox 100 Saxonburg. Pa. ADLER. Arthur (R) Alloy Metal Powders. Inc. 233 Eagie St.. 3rook!vn 22. N. Y. AFFLERBACH. Harry (E) R.R. 4. Frankfort, Ind. (Ingram-Richardson. Inc.) AGARWAL. Gopal Mohan 104 E. 15th Ave.. Coiumbus 1, Ohio A. G. DER G ERRESH EIM ER GLASHTTENW ERKE (L. Breuer) Dusseidorf-Gerresheim, Germany AGRON, Albert M. (E) Pfaudler Co.. Taylor St., Elyria, Ohio AGUILAR, L. M. (E) Ferro Enamel de Mexico. S. A. Calle Oriente 171, No. 450 Mexico 14, D. 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. Ernst (W) 13-B-3 Redfield Village. Metuchen, N. J. (General Ceramics Corp.) ALBERT. Joseph (W) 1868 Windemere Dr.. N. E. Atlanta. Ga. (Albert Pottery) ALBERTALLI. Stephen L. (G) Coming Glass Works. Harrodsburg, Ky. ALBERY. D. F. (SFI) 1433 23rd S t N. W.. Canton 9, Ohio (Stark Ceramics, Inc.) ALBRECHT. Ernst Keramische Fachschule Hoehr-Grenzhausen/b Koblenz, Germany ALCOCK, Ronald H. "Ferrum " Espaa 402--600, Avellancda Buenos Aires. Argentina (Ferrum. L. A. de Ceramica y Metalurgia) ALDEN, Charles E. (G) 3427 Heather Downs Blvd. Toledo 14. Ohio (Kimble Glass Co.) ALELUIA. Joao C. F. Av. Araujo E. Silva 59 Aveiro, Portugal (Fabricas Aleluia) ALENIUS, Cari Axel _ Xarhunkatu 23. Karbala. Finland (A. Ahistrom Oy. Xarhuia Bruk) A LEXANDER, A. e.. (G) 3uchar.an Apts. 3-D. 155 E. 47th St. New York 17, N. Y. (Tiffanv iz Co.) ALEXANDER. John 3 . (M) Southwestern Portland Cement Co. 1034 W ilshire 31vd. Los Angeies 17. Calif. ALEXANDER. John M. (M I) 2376 Hamilton Ave. North Bellmore, N. Y. (Swindeli-Cressier Corp.) ALGEMENE VERENIGING VOOR De NEDERLANDSE AARDEWERK EN GLASINDUSTRIE (W. J. Boilen) Haagweg 139, Rijswijk. Netherlands ALGER. Ferris E. (G) Old York Rd.. New Hope Bucks Co.. Pa. (Consultant) --- ' ' ALLEGHENY LUDLUM STEEL CORP. (Paul E. Perry) Brackenridge, Pa. ALLEN, Alfred W. (R F) Ceramic Engineering Dept. University of Illinois, Urbana, 111. 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 365 Newark. Calif. ALLEN. Robert G. (R) Robert G. Alien Co., Box 110 Mechanieville, N. Y. ALLEN. W alter C. (B) Radio Corp. of America Chemical St Physical Lab. 415 S. Fifth St., H arrison, N. J. R oster 1 ,,LEN, W arren \V., Jr. (Si Hydraulic-Press Brick Co. South Park. Ohio LLIANCE W ARE, LTD. (R. E. Strain) Box 550, Vancouver, B. C., Canada ,,LIEGRO. Lt. JG Richard (X J) VA-JS. F .i'.O., New York, X. Y. 1 iX, Adrian G. (R) elle Memorial Institute a u ; K i n g Ave., Co ium bus 1, Ohio ELMAN. Orin H. (G) Kimble Glass Co. Owens-Illinois Technical Center 1700 N. Westwood Ave.. Toledo l, Ohio ET, Leslie R. (S i) 547 Simon St., Hayward, Calif. (K raftile Co.) ETMANN, Benon G. (B) 16700 Cypress Way, Los Gatos, Calif. (K aiser Aluminum 4 Chemical Corp.) LTON B R IC K CO. (M orris P. Hall) Box 25, Maryland H eights, Mo. LTSCHL'LER, Otto (W ) 271 H aw thorne Ave., L anghom e, Pa. (W enczei Tile Co.) LUM INIUM LIM ITED SALES, INC. (R . M. M athieson) 630 Fifth Ave. New York 20, X. Y. LUMINUM CO. OF AMERICA ( H . P. Bonebrake) 1501 Alcoa Bldg. Pittsburgh 19, Pa. MERICAN COLLOID CO. (Paul Bechtner) Merchandise Mart Plaza, Rm. 313 Chicago 54, 111. MERICAN ENCAUSTIC T IL IN G CO., INC. (Robert A. Williams, Jr.) 1000 N. Cannon Ave.. Lansdale, Pa. MERICAN GAS ASSOCIATION (C. G. Segeler) 420 Lexington Ave. New York 17, N. Y. MERICAN LAVA CORP. (R . A. McGinnis) Cherokee 3Ivd. L Mfgrs. Rd. \ttanooga 5. Tenn. 3 CAN N EPH ELIN E LTD. . -. R. Oeeth) 25 K ing 5t. W.. Rm. 2530 Toronto. Ont.. Canada M ERICAN O PTICA L CO. (A. H. Bennett) Research Center, Southfcridge. Mass. MERICAN PORCELAIN E N A M E L CC. (Robert Long, Sr.) 1285 E. K eating Ave. Muskegon 36. 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. (James S. Goodman) 834 E. Broadway Louisville 4. Ky. M ERICAN SMELTING 4 R E F IN IN G CO. (D. K. Wright) 120 Broadwav, New Y ork 5, N. Y. M E R IC A 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 43, 111. (U . S. Steel Corp.) M E S, Robert G. (W ) 69 Jefferson Ave., Cresskill, N. J. (B. G. Corp.) M IN . R. B. Alembic Chemical Works Co., Ltd. P . O. Chemical Industries Baroda 3, India M M ERM AN, J. H. (R I) 202 Scribner, DuBois, Pa. 'N o rth American Refractories Co.) V lEIN, Alan G.. Box 1659 . Jorgia Institute of Technology Atlanta, Ga. ANCHOR HOCKING GLASS CORP. (W illiam V. Fisher) Lancaster, Ohio 7ol. 35, N o. 10 (1956) AXCIZAR-SORDO, Jorge Laboratorio Quimicc Xacional Muistcrio de Minas y Petroleos Apartado 2577, Bogota. Colombia ANDERSON. Harlan U. 1424 Federal Way, Salt Lake City, Utah ANDERSON. Harry L. (R I) Republic Steel Corp. Youngstown 1, Ohio ANDERSON. Herbert H. (G) 401 N. Main St., Port Allegany, Pa. (Pittsburgh-Coming Corp.) ANDERSON, Orson L. (G) BcQ Telephone Labs., Murray Hill, N. J. ANDERSON, R. E. (W ) Robertson Mfg. Co., Box 843 Trenton 5, N. J. ANDERSON, R. H. (S) Robinson Clay Product Co., Box 545 Dover, Ohio ANDERSON. Robert E. (W) Iroquois China Co., 2320 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., I l l 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. Ferns Enamel S. A.. Caixa Postal 2948 Sao Paulo, Brazil ANDREWS. Ray _(G) B. F. Drakenfeid 4 Co., Inc. Box 519, Washington, Pa. ANTAKI. Emile Ferrum S. A. de Ccramica 4 Metalurgia Espaa 402/600 Aveilaneca. Argentina ANTHONY. 3enjanin ?. (R) Ferro Engineering Co. 1400 Hanna Bldg.. Cleveland 15, Ohio ANTHONY. George H. (R) 41 Marion Dr., Poland, Ohio (Youngstown Sheet 5c Tube Co.) ANTHONY. H arry L.. I l l (R) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13. Pa. ANWYL, Robert H. (S) Lisbon St.. Gienmoor MC-22 East Liverpool, Ohio APT. Elmer E. (S) A. C. Ochs 3rick 4 Tile Co. Springfield. Minn. ARANGO. G. Botero Balboa 63-13. Medellin, Colombia (CristaJeria Peldar S. A.) ARCHBOLD. Walter H.. Jr. (MI) 125 Smallwood Dr.. Snyder 21, N. Y. (Electro Refractories & 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 312. Corinth, Miss. ARCHIE. Chad L.. Jr. (SJ) Archie Structural Products Co. P. O. Drawer 312, Corinth, Miss. ARENSBERG. Francis L. (R) Vesuvius Crucible Co., Box 8275 Swissvale, Pittsburgh 18, Fa. d'ARGENTEUIL, Comte L. de Meeus N. V. Ceramique M aastricht Hoge Barakkcnstraat 6 Maastricht. Netherlands ARKETSX CERAMIC CORP. (George W. Shoemaker) 6 N. Walnut S:.. Brazil, Ind. ARMCO STEEL CORP. (R. S. 3urns) Research Library, Middletown, Ohio ARMISTEAD. W. K. (G) _ 65 E. First St., Coming. N. Y. (Coming Giass 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 Standish Blvd.. Pittsburgh 28, Pa. (Federal Enameling 4 Stamping Co.) ARNOLD, 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. Frank C. (W I) Coors Porcelain Co.. Golden, Colo. ARRANDALE. Roy S. (G) Thatcher Giass Mfg. Co., Inc. 1901 Grand Central Ave., Elmira, N. Y. ARRAS. George (E) Quadrangle Mfg. Co.. 32 S. Peoria St. Chicago 7. 111. ARSEM. William C. (B) 7829 Old Chester Rd.. Bethesda 14, Md. (Office of Naval Research) ARTHUR. Edwin P. CG) 3110 Las Faldas Dr.. Fullerton. Calif. (Beckman Instruments. Inc.) ARTIS. William E. iD ) Nebraska State Teachers College Chadron, Nebr. ARW IXE. A. S. (R) Refractory 4 Insulation Corp. po rt Kennedy, ?a. ASDELL, Bernard K. (W) Edgar Division Minerals 4 Chemicals Corp. of America McIntyre. Ga. ASHER. John W. (G) Box 382. Corning,^ N. Y. (C om ing Glass Works) ASHWORTH. GEORGE L. 4 BROTHERS. LTD. (W . Gordon Evans) Broad Street Works Hanley, Stoke-on-Trent, England ASQUITH. Milton Redfearn Brothers, Ltd. Monk Bretton Glassworks Bamsiey, England -- ' ' ASSOCIACAO BRASILEIRA DE CERAMICA Praca Coronet Fernando Prestes. 110 ( Edificio 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) O hio University, Dept, of Geology Athens, Ohio AULT. Neil N. (BI) Norton Co.. 1 New Bond St. Worcester 6. Mass. AUSKERN, Allan (BJ) W estinghouse Atomic Power Div. Box 1468. Pittsburgh 30. Pa. AUSTEN AL. IN C. (R. C. Feagin) 224 E. 39th St., New York 16. X. Y. R oster 3 AUSTERM AN. Stanley B. (.BJ "006 Andasol Ave., Van Nuys, Calif. (Atomics International) A USTIN , A rthur O. (B ) Box 109, Barberton, Ohio (A. O. Austin Co.) .V S T I N , Charles E. (3 ) 'onsolidated Brick Co. iorseheads, N. Y. A USTIN , Chester R. (R F I) Oxygen Converter Dept. Kaiser Engineers 1924 Broadway-- Kaiser Bldg. Oakland 12, Calif. AUSTIN, G arth F. Gen. Del., Alfred, N. Y. A U STIN , Jam es Bliss (B F) United States Steel Corp. Rm. 2401. 525 William Penn PI. P ittsburgh 30, Pa. A U STIN . Lewis M. (G) 2334 Middlesex Dr., Toledo 6, Ohio (Owens-Illinois) AVERY. Robert C. Box 326, Alfred. N. Y. A V R IL . Jack J. 8804 Frances Foison Rd., S.W. Tacom a 99, Wash. A Y D ELO TT. Elliott C. (SI) Waverly, Pa. (International Salt Co.) A 2EV EDO , 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. 111. BA3A. P-.ul D. 158 Pennington St., Elizabeth 2, N. J. JOCK. Clarence L. (GF) -718 Potomac, Toledo 7, Ohio (Owea-Illinois) B A 3C 0C K , M. G. (G) 618 Kenilworth Dr., Pittsburgh 34, Pa. (Pittsburgh Plate Glass Co.) BABCOCK. Paul R. (W I) Frenchtown porcelain Co. Frenchtown. N. J. BABCOCK 4 W ILCOX CO. (J. E. Brinekerhof) 161 E. 42nd St., New York 17. N. Y. BACH, Carl H. (S) T u thill 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 Coud Farms, Inc.) BACHMAN. Charles D. (G) 200 Shelburne Rd.. R. R. 2 Millville. N. J. (A rm strong Cork Co.) BACHMAN. George S. (G) 151 W. Washington St., Shelbyville, Ind. (Pittsburgh Plate Glass Co.) BACHMAN, James R. (R ) , United States Steel Carp. Applied Research Lab. Monroeville, Pa. BACHMAN, Wheeler Carr (W) RJL 5. Grafton. W. Va. (C arr China Co.) P T O N , Frank R. (G F) 1153 Darlington Rd., Toledo 6, Ohio vOwens- Illinois) BACON, James F. (G) 130 Pritchard Ave.. Coming, N. Y. (Coming Glass Works) Vol. 35, N o. 10 (1956) BADGER. Alfred E. (GF) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio BAER. G. M. (K) R. C. Remmey Son Co. Hedley St. & Delaware River Philadelphia 37, Pa. BAGBY, Richard A. ( 3 J) 15 Allerton Rd., Dayton 5, Ohio (Wright Air Deveiopment 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) Golding-Keene Co. 226 Main St., Keene, N. H. BAILEY. James (GF) 95 Steele Rd., West Hartford 7, Conn. (Flax Corp.) BAILEY'. Richard J. Doulton Fine China Ltd. Royal Doulton Potteries Burslera, Stoke-on-Trent. England BAIN, Andrew R. The Whins, 26 Park Terrace Stirling, Scotland BAIN. Robert M. (X) Eastern Montana College of Education Billings, Mont. BAIR. George J. (GFI) 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.) BAKER. Houston R. (G) Sharp-Schurtz Co. 101 n-ineoin Ave.. Lancaster. Ohio BAKER, Robert L. (G) 46 Highland Ave.. Weilsviile, N. Y. (Air Prebeater Corp-) BAKER, Theodore C. (G) RJL 1, Wayne, Ohio (Owens-Illinois) BALDAUF. Earl E. (W I) Flamingo Tile Corp., 3ox 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., National Lead Co.. 3ox C Bridge Station, Niagara Falls, N. Y. BALINA, Marcelo O. GA.P.E-A., Lanus-KM 7 C. G rai, Belgrano Buenos Aires, Argentina BALINKIN, Isay (W) University of Cincinnati Gncinnati 21, Ohio BALINT, Louis J. (B) 14185 Story Rd., San Jose 27, Calif. (Kaiser Aluminum 4 Chemical Corp.) BALL, Albert L. (R) Bay State Abrasive Products Co. Westboro, Mass. BALL BROTHERS CO, IN C Muncie. Ind. BANERJEE. A. Bebar Firebricks 8c Potteries Ltd. P. O. Mugma. Disc. Manbhum, India BAQUE, Harold W. (GI) 1511 Mohican Dr., Pittsburgh 23, Pa (Corhart Refractories Cb.) BAR3A, Charles E., Jr. (M) Creek Rd.. R. R. 1. Doyiestown, Pa. (Sales Engineer; BARBER. Fred O (M) 788 Evening S:.. Worthington, Ohio (H arrop Ceramic Service Co ) BARBER, Stephen W. (G) Owens- Illinois 1700 N. Westweod Ave., Toledo 1, O hi/ BARBOUR. David J. (W F) 345 E. Highland D r , Zanesville, Ohio BARBRE, Norris H. (S) Mellon Institute, *400 Fifth Ave. Pittsburgh 13, Pa. BARDSLEY, James J. 404 Spruce S t, Appalachia, Va. BARIUM REDUCTION CORP. (K. O. Priddy) South Charleston 3, W. Va. BARKER, RoUand C. (G) Glass Mfg. D ept, Lamp Div. General Electric Co, Nela Park Cleveland 12, Ohio BARLETT. Helen B. (BF) A C Spark Plug Div, General Motors Corp, Fllnc 2, Mich. BARNA, Gordon L. R, R. 7. Box 575, Tacom a. Wash. BARNES. Harry H. (BI) W ah Chang Sm elting 8c Refining Corp. Herbhill R d , Glen Cove, N. Y. BARNES. Lehm an W. 434 S. Second S t , Sraithfield, N. C. BARNES. Wilson R. (R) Corhart Refractories Co. 16th 8c Lee S ts , Louisville 10, Ky. 3ARNET. Joaquin Cermicas Kii-per A partado 1243. H avana, Cuba BARNEY. Ronald N. (BJ) 5487 Cobb D r, D ayton 3. Ohio (W right Air Development Center) 3ARON. Jean Laboratoire ce Controle des Produits Refractaires 15. Place Carnot Nancy (M eurthe et Moseiie) France BARR. Harold N. (3 ) Glenn L. M artin Co. Nuclear Eng. Div. --710 B altim ore 3, Md. BARR, H arry (M) Consolidated Feldspar Dept. International Minerals 8c Chemical Corp. Box 1843. Trenton 7, N. J. BARR. Robert A. IM) 867 River R d , F air Haven. N. J. (Carborundum Co.) BARR. Seymour J. (S) Shenandoah Brick 8c Tile Corp. Box 32. Winchester, Va. - -- " ' BARRETT. E. L. (R) Chas. Taylor Sons Co. . South Shore, Ky. BARRETT, Harvey N , Jr. (R> 2233 St. James Parkway Cleveland Heights, Ohio (Basic, Inc.) . BARRETT. Maurice (Life) 8 Oxcliffe Rd. ' Morecambe and Heysham, England BARRETT. Wayne E. (S) R. R. 1, W est Des Moines, Iowa (O skaloosa G a y Products Co.) BARRINGER. Laurrence E. (Honorary. W FI) 23 F ront S t, Schenectady 5, N. Y. (General Electric Co.) BARROWS PORCELAIN ENAMEL CORP. (Woodrow Carpenter) Langdon Rd. 8c Penn R. R. Cincinnati 13, Ohio . R oster 5 BARTA. R. Czechoslovak Ceramic and Glass Society Technicka ul.c.5. Praha XIX, Czechoslovakia BARTHOLOM EW . George A. (5; United States Steel Corp. Applied Research Lab. Monroeville. Pa. jRTHOLOM EW , George L. Box 1009, Alfred. N. Y. 3A RTLETT-COLLIN S CO. (H arrison I. Bartlett) Box 519 Sapulpa, Okla. BARTLETT. E. E. (G) +587 Boca Chica Blvd. Brownsville, Texas (Bartlett-Collins Co.) BARTLETT. Harrison I. (G) Bartlett-Collins Co., Box 519 Sapulpa, Okla. BARTON. James E. Box 2435, Clemson College Sta. Clemson, S. C. BARZAGHI, Luciano Ceramiea Sao Caetano Rua Roa Vista, 155-4* 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 West. Belleville. III. (Aluminum Co. of America) BASS, N. W. (R) Brush Beryllium Co., 4501 Perkins Ave. Cleveland 5, Ohio BASSETT, Leon B. (3 ) Box 234, Alfred, N. Y. (State University of New York. College of Ceramics) BASSETT, Ray E. (S) Acme 3 rick Co.. 3ox 425 Fort Worth 1, Texas BASSETT, Robert (S) Central Commercial Co. Darlington, Beaver County, Pa. ITEMAN. L. A. (E) Eljer Co.. Enamel-Ware Div. Salem, Ohio BATES. A. Allan (B) Portland Cement Assn. 33 W. Grand Ave., Chicago 10, 111. BATES. Charles E. (S) 123 W alnut St., Brookville. ?x. (H anley Co.) BATES, E dgar A. (B) 4S06 Toni Lane. San Diego 15. Calif. (Convair) 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) Spectrochemical Labs., Inc. 1010 W ood St.. Pittsburgh 21, Pa. BATESON, H. Marshall 68 Spring Grove Loughton. Essex. England (Thermos. Ltd.) BATESON , Sydney (G) D uplate Canada Ltd. Oshawa, Ont., Canada BATRUK. Stanley J.. Jr. (E) New Jersey Zinc Co. 160 F ront St.. New York 38, X. Y. -BATTISTA, George Box 747, Alfred. N. Y. BAUER. Richard M. (M) 723 St. Louis Ave., Zanesville, Ohio (Mosaic Tile Co.) BAUER. W olf G. (S) S622 Seaview Ave.. Seattle 7, Wash. (Consulting Engineer) ...aL'LE K E, M aynard P. 6910 Meadow Brook Blvd. M inneapolis 26, Minn. BAUM, Frederick J,, Jr. (B) E. I. du Pont de Nemours 4 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. (R) 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 4 Tube Co.) BEALS. M. Dougias (B I) Research Lab., Titanium Division National Lead Co., South Amboy, N. J. BEALS. Robert J. (W I) 109 Ceramics Bldg. University of Illinois, Urbana, III. BEAM. James R. (W F I) 300 Ruth Ave.. Mansneld, Ohio (Ceramic Engineering Service) BEARD. Clinton L. (W I) Globe-Union, Inc.. 900 E. Keefe Ave. Milwaukee 12, Wise. BEARDSLEY. Clinton J. (W) 666 E. Findlay St.. Carey, Ohio (Porcelain Products. Inc.) BEASLEY, D em is R. (G) 659 McCuilogh St.. Morgantown, W. Va. (Struc-Tite Fibers. Inc.) BEASLEY, Robert M. (G) Coming Glass Works, Corning, N. Y. BEATHARD, Robert X. (W) General Tile Car?., Box 38 El Segundo. Calif. BEATON. Orville (W) Gem Clay Forming Co.. Sebring, Ohio BEAVER. Wallace W. (M) Brush Beryllium Co., 4301 Perkins Ave. Geveland 3, Ohio BEAZELL. William H. (G) American Window Glass Co. 20th Floor. F anners Bank Bldg. Pittsburgh 22. Pa, BEBBINGTON, Philip J. (E) 2 Barker Lane, Saxonville, Mass. (A rthur D. Little, Inc.) BECHTNER. Paul (M) American Colloid Co. Merchandise Mart Plaza, Room 813 ' Chicago 54. 111. BECX, Elmer W. (M) Ceramic Supply Co., Crooksville, Ohio BECK. J. Howard (M) BTU Engineering Co. 440 Somerville Ave. Somerville 43, Mass. BECX, Norman R. (G) Carr-Lowrey Glass Co. Baltimore 3. Md. BECK, Warren R. (B) Minnesota Mining 4 Mfg. Co. 900 Fauquier Ave. St. Paul 6, Minn. BECKEMEYER. Harry J. (W) Universal-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, N o. 10 (1950) BECKER. Martin G. (S) Brookhaven Pressed Brick 4 Mfg. Co. Box 542, Brookhaven, Miss. BECKER. Walter D. (S) Brookhaven Pressed Brick 4 Mfg. Co. Box 542, Brookhaven, Miss. BEECHER. Milton F. ( R F I) 50 Woodland Rd.. Holden, Mass. (N orton Co.) 3EELER . L. S. (W) Reynolds Metals Co., 2500 S. Third St. Louisville 1, Ky. 3EERMAN, Henry P. (B) Phtlco Tube Laboratory, Church Rd. Lansdale, Pa. BEERS. Roland F. (B) Box 1019, Troy, N. Y. (Roland 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. BEGIEN, Virginia American Ceramic Society 4055 N. High St. Columbus 14, Ohio BEHAR FIREBRICKS 4 PO TT E R IES LTD. (A. Banerjee) P. O. Mugtna, Dist. Manbhum, India BEHREND, Oswald (R) 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 William Penn Place Pittsburgh 30, Pa. BELD. George H. (W) Keivinator Div. American Motors Corp. 1600 Clyde Park Ave.. S. W. Grand Rapids 9, Mich. BELK O W SK I. A rthur V. (G) 161 W hittcnton St., Taunton. Mass. (General Electric Co.) BELL, Clarence D. Box 3438, Cletr.'on College Station Clemson. S. C. BELL. Kenneth E. (S) 349 Lacasse Ave.. Apt. 6 Eastview, Ont., Canada (Ottawa 3rick 4 Terra Cotta Co.. Ltd.) BELL. Richard (M) Bell Clay Co., Gleason, Tenn. BELLAMY, Harry T. (R) Armour Research Foundation 10 W. 5Sth St.. Chicago 16, III. BELLAM Y. L. B. (R) Abrasive 4 Metal Products Co. 729 Meld rum Ave., DetToit 7, Mich. BELLIDO. Bartolom Damis - ' Director Gerente de ME.R.S.A. Lugones (Oviedo), Spain BELOW, Henry (W) Pennsbury Pottery, Morrisville, Pa. BENBENEK. Raymond (SI) Canada 3rick. Ltd. Streetsville, Ont., Canada BENDER. Bob G. (GI) CBS-Hytron, Kent 4 Warren Sts. Newboryport, Mass. , BENDER, John K. (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 P. Steele) Des Plaines. III. BEN N ER, Stanley G. (E) Johns-Manville Research Center Manvillc, N. J. Roster 7 BENNER. W. J. IRj 730 Romona Rd.. Wilmette, 111. (Pyro Reiiactories Co.) BEN N ETT, A. H. (G) American Optical Co., Research Center Soutibridge, Mass. BEN N ETT, A. Lee ( S r i) JS30 Las Flores Dr., Glendale, Calif. /(Pacific Clay Products) n --N N ETT. Dwight G. (E FI) 204 Ceramics 3ldg. L'niversiry of Illinois. Urbana, III. B EN N ETT. Edward <W) B. G. Corp. 321 Broad Ave., Ridgefield, N. J. BENNETT. Frederick R. (R) Box 325, Hartsville, S. C. (Carolina Refractories Co.) BENNETT, Harry J. (W) Crooksville China Co. Crooksville, Ohio BENNETT. Myles ?. (BI) 6552 N. Oldham U ne San Gabriel, Calif. (Gladding, McBean Sc 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 3. (W) National Plumbing Pottery. Inc. 305 N. Front St., Columbus 15, Ohio BEN ZEL. Jam es F. 840 Techwood Dr., N. W., A tlanta, Ga. BERG. Morris (B) 315 Pleasure Rd., U ncaster, Pa. (Radio Corp. of America) BERGER, Bernard M. (E) Dept. 817, Sears, Roebuck Sc Co. . 925 S. Homan Ave., Chicago 7, 111. BERGER. Donald Francis (G) 41 W. South St., Painesville. Ohio (Diamond Alkali Co.) BERGERON, Clifton G. (E l) Whiripool-Seeger Corp.. 300 Broad St. it. Joseph. Mich. - .iG -IV ERSEN , Wiggo A /S Sgersunds Fayar.ccfabriks Co. Egersund. Norwav BERKELHAM ER. U u is H. fET) 3621 W. Howard S \. Skokie. 111. (Ohmite Mfg. Co.) B E R N A R D IN I. Guy F. (W) Box 19. R. R. 1. Latrobe. Pa. (Stupakoff Div.. Carborundum Co.) BERNS, Milton H. (M) 249 Charlotte Ave.. Hamburg. N. Y. (Electro Refractories Sc Abrasives Corp.) BERN STEIN . Leonard (B) Kwikset Locks. Inc. 516 E. Santa Ana St,, Anaheim. Calif. B ER N STO R F. Robert B. (D) Box 679, East Liverpool, Ohio (Commercial Decal. Inc.) BERRIN. Lloyd c /o Jack Cole. 5731 '4 Carlton Way Hollywood 23. Calif. BERRY. Thom as F. (B) 527 34th St.. Union City. N. J. (R adio Corp. of America) BERTHA . Edw ard J. 3310 N. Calvert St., Baltimore 18. Md. BESSE. Richard W. (W) O nondaga Pottery Co. 1856-58 W . Fayette St. Syracase 4, N. Y. BESSEY, George E. Chalk Lim e & Allied Ind. Res. Assn. 30 C hurch St. Welwyn, Herts. England Edison F. (G) i.ibbey-Owens-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. 35, N o. 10 (19) BETHLEHEM STEEL CO. (Hobart M. Krar.er) Bethlehem, Pa. BETTISON, L. S. (S) Chambers Brothers Co. 52nd it Media St., Philadelphia 31, Pa. BETZ. GEORGE C. (M FI) Metai 3t Thermit Corp. 100 Park Ave., New York 17, N. Y. BETZ, Wilbert 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) 321 Broad Ave., Ridgefield. N. J. BICKERSTAFF CLAY PRODUCTS CO. (L. N. Bickerstan) Box 1173 Columbus, Ga. BICKERSTAFF. L. N. (S) Bickerstarf 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. Wolverhampton. England (Ferro Enamels Ltd.) BIELSTEIN. Hans O. (R) Metallurgy Research Branch Aeronautical Research Lab. (WCRRL) WADC. Wright-Patterson AFB. Ohio B IL L H E IM E R .John E. (WJ) Highwood. Easton Ave. New Brunswick, N. J. (Mitchell-Bisseil Co.) BILLIAN, Carroll J. (G) Ow-ns-Illinois General Research Div. 1700 N. Westwood Ave.. Toledo 1. Ohio BILLINGS. David D. (G) Glass Containers Corp. 3601 Santa Fe Ave. Los Angeles 53, Calif. BIONDI. Joe 2310 E. 52nd St.. U s Angeics 58. Calif. BIRCH. Raymond E. (R F I) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22, Pa. BIRSE. Alexander L. John G. Stein Sc Co.. Ltd. Bonnybridge, Scotland BISHOP. Frederic L. (GF) Kimble Glass Co. Owens-Illinois Technical Center 1700 N. Westwood Ave. Toledo 7, Ohio BISHOP, George J.. I l l (S) Guignard Brick Works, Box 480 Colnmhia, S. C. BISHOP. Harold E. (G) Owens-Coming Fiberglas Corp. Anderson, S. C. BISHOP, U vem e R. (R) Aluminum Co. of America 3300 Missouri Ave., East St. U u is, 111. 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, Beaver County, Pa. BLACK. H. R. i.G/ Kimble Glass Co. 1700 N. Westwood Ave, Toledo, Ohio BLACKBURN, A. Reif (M l) 204 N. State 5t., Westerville, Ohio (Ram. Inc.) BLACKBURN, Douglas H. (G) 2921 Langley Ct. W ashington 16, D. C. (N ational Bureau of Standards) BLACKWOOD. James M. (R I) 124 First St., Niagara Fails, N. Y. (Carborundum Co.) 3LAES. H enry M.. II (B) 339 N. Hoover Ave., W hittier, Calif. (North American Aviation) BLAHA. Emil (R) 415 Ashmcad Rd., Cheltenham. Pa. (Selas Corp. of America) BLAIR. Gerald E. (G) 3667 palm yra Rd., Pittsford, N. Y. (Bausch Sc Lomb Optical Co.) BLAIR, Marion W. (SF) 2131 S. Center St.. Terre Haute. Ind. (Manufacturers Equipment Co.) BLA ISON, Pierre Societe des Electrodes Sc Refractaires "Savoie" 16. Rue de Monceau. Paris 3*. France BLAKE. William V. (RI) Macxlin Abrasive Co.. Jackson, Mich. BLAKELY, A lexander M. (B) Precision G rinding Wheel Co., Inc. 3301 T orresdale Ave. Philadelphia 36. Pa. BLANCHARD. M. Kenneth (E) A. O. Smith Corp., 3533 N. 27th St. Milwaukee I. Wise. BLAU. Henry H. fG FI) Federal Glass Co.. 515 E. Innis Ave. Columbus 7. Ohio BLAZOVIC. Phii. Jr. (M) 3236 W estern Ave. Highland Park._I!l. IConsolidated reld sp a r Dept. International Minerals & Chem. Corp.) 3L E C H E IS E N . J. (E) Rosiclare Lead Sc Fluorspar M ining Co. Rosiclare. HI. BLENKO. William Her.rv. Jr fG) 1412 Main St.. Milton. W. Va. (Blenko Glass Co.. Inc.) BLESSING. Robert Lee 'S I) 1714 Crestwood 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. Center St.. N esquehoning, Pa. (D eister C oncentrator Co.) BLITON. Jerald Box 326. Alfred. N. Y. . . - BLOCKSIDGE. Arthur 3.. Jr. (R) Jones Sc Laughlin Steel Corp. 40 U ngw orth S t- Pittsburgh 7. Pa. BLODGETT. William E. (W ) II Lakevicw Terrace, Woburn. Mass. (R. Guastavino Co.) BLOHM. Richard E. (E) 1657 E. Waverly Way Baltimore 12. Md. (Rheem Manufacturing Co.) BLOME. James C. 1108 S. First. Champaign, III. BLOOM. Ray A. (R) Technical Library Timken 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 R oster 9 BLUE RIDGE GLASS CORP. (J. K. Lewis) Kingsport, Tenn. BLUM, Seymour i.WI) Raytheon Manufacturing Co. Research Div. Waltham, Mass. ' IE. A rthur J. (S I) lurray Tile Co., Cioverport, Ky. 3LUM ER, Fridolin (D j Lane Gate Rd. Coid Spring, Putnam Co.. N. Y. (Commercial Decal, Inc.) BLUNT. Royden A. (G F) Buck Glass Co., 841 E. Fort Ave. Baltimore JO, Md. BLYTHE COLOUR WORKS, LTD. Cresswell, Stoke-on-Trent, England BOARDMAN, Charlotte K. (R) Thomas A. Edison, Inc. 51 Lakeside Ave., West Orange, N. BOBROWSKY, A. R. (R ) 2012 Pontiac Rd.. R. R. 2 Ann Arbor, Mich. (Ford Motor Co.) BOEKER. V. W ..(G I) Owens-Corning Fibergias Corp. 598 Madison Ave., New York 22, N. Y. BOGATAY, Paul (D) 45 W. Weisheimer Rd. Columbus 4, Ohio (Ohio State University) BOGNAR. Edwin J. (R I) B ognar & Co., Inc. 1711 F irst N ational Bank Bldg. Pittsburgh 22, Pa. BOHN. Edward L. (R) Mullite Refractories Co., 10 Canal St. Sheiton, Conn. 30L A N O V IC K , Meivin (S) 3118 Palmer Sq., Chicago 47, 111. (Illinois Brick Co.) BOLE, George A. (X F) Engineering Experiment Station Ohio State University Columbus 10, Ohio LEN. W. J; A lgerrene Verenigir.g voor de N ederiancse, A arcewerk en Glasindustrie. Haagweg 139 Rijswijk. Netherlands BOLLINGER. Robert H. (M I) Georgia Xaoiin Co.. -33 N. Broad St. Elizabeth 3, N. J. 3 0 L 0 N . David G. 'R D 5525 E. 31st.. Indianapolis, Ind. (Sales Representative) BCLTON. H arry L. (R ) Philadelphia Quartz Co. Public Ledger Bldg. Independence Square Philadelphia 6. Pa. BOLZ, Leonard H. (B) National 3ureau of Standards, Div. 9 : 7 Conn. Ave. 4 Van Ness Washington 25, D. C. BONEBRAKZ. H. P. (M) Aluminum Co. of America 1501 Alcoa Bldg.. Pittsburgh 19, Pa. B O N N O T CO. (B. T . Bonnet) 722 Mulberry Rd.. S. E., Canton 2, Ohio BONNOT. B. T. (M F) Bonnot Co.. 722 Mulberry Rd., S. El- Canton 2, Ohio BOXSTEIN. Thomas E. (W) Paper Makers Im porting Co., Inc. 44 S. Second St., Easton, Pa. BOOTH. John F. Hazlehead Hall. Penistone, Nr. Sheffield Sheffield, York, England (Hepworth Iron Co., Ltd.) BOOZE. M. C. (RFI) 4725 Walton Creek Rd. Cincinnati 27. Ohio (Charles Taylor Sons Co.) . ,,PP. Harold F. (GF) 67 Gorton St.. Corning. N. Y. (Coming Glass Works) BOROM . Marcus P. Box 12S, W aynesboro. Ga. BOROS. John (W) Pacific Tiie 4 porcelain Co. 7716 E. Olive St., Paramount, Calif. BOSCH. F. M. Lab. Anorganisch-Tech. 4 Electro chemie 22 Plateaustraat, Ghent, Belgium BOSLER, Krell (E) 56 Matti Rd., Corner Lakeview Dr. Gardner, Mass. (Florence Stove Co.) BOTFIELD, George B. (R) Botneld Refractories Co. Swanson 4 Clyraer Sts. Philadelphia 47, Pa. B O TFIELD REFRACTORIES CO. (George B. Botneld) Swanson 4 Clymer Sts. Philadelphia 47, Pa. J. BOTHE. James V. (G) 3 Pyrex St., Corning, N. Y. (Coming Glass Works) BOUDER, Norman M., Jr. (G) 4820 Roland Ave., Baltimore 10, Md. (Pemco Corp.) BOURGERIE, R. D. (W ) Radio Materials Corp. 3325 N. California Ave., Chicago 18, 111. BOVEE. Benedict A. (M) 1837 W inter Rd. Grand Island, R.F.D.. N. Y. (H arper Electric Furnace Corp.) BOW DEN. James J. (B) Bowflux Co., 3ox 65, Cortland, Ohio BOWEN ENGINEERING, INC. (William A. Bowen) North Branch. N. J. BOWEN, William A. (M) Bowen Engineering, Inc. North Branch. X. J. BOWER. David N. (G) . 3932 Rohr Dr.. Toledo 13, Ohio (Owens-Illinois) BOWERS. Donald J. <3) 950 Highland Dr., Columbus 14. Ohio (Battelle Memorial Institute) BOWES. Urban E. (GF) Owens-Illinois, Box 1035--1036 Toledo 1, Ohio BOWMAN. Donald C. (E) 579 S. Craig PI.. Lombard. III. (Chicago Vitreous Corp.) BOWMAN. D. Scott (M> Carborundum Co.. Globar Div. Niagara Falls, N. Y. BOWMAN, Eugene D. (G) 824 Oakwood Ave.. Columbus 6. Ohio (Kimble Glass Co.) BOWMAN, John G. (W ) 341 S. Juliana St.. Bedford, Pa. BOWMAN. Robert R. (R) Harbison-W alker Refractories Co. 609 Jackson Bldg., Buifalo 2. X. Y. BOWNE, Martin S. (SI) Lee Clay Products Co.. Inc. Clearfield. Ky. BOYCE, Joseph (M) Vitro Mfg. Co., 60 Greenway Dr. Pittsburgh 4, Pa. BOYCE. Robert E. (W ) Harker Pottery Co. East Liverpool, Ohio BOYD, Frank H. (M) S. G. Frantz Co., Inc. Box 1138, Trenton 6, N. J. BOYD. John E. (M I) Box 2414, Greensboro, N. C. (Carolina Pyrophyllite Co.) BOYD, L. R.. Jr. (S) Teague Brick 4 Tile Co- Box 329 Teague, Texas BOYD. Robert C. (E F I) American Standard, 1541 S. Seventh St. Louisville 8, Ky. BOYLES. John P. (W ) Edwin M. Knowles China Co. Newell. W. Va. Vol. 35, No. 10 (1950) 30Y N T O N , Claudia G. (D) 1012 N. Franklir. St. Manchester, Iowa (Industrial Publications, Inc.) BOYNTON, Robert S. (X) National Lime Assn. 925 15th St. N. W. Washington 5, D. C. BOZZO, J. G. (G) Pierce Glass Co.. Raiiroad Ave. Port Allegany. Pa. BRA CK3ILL. Charles E. (R) 1650 Liggett Ct.. St. Louis 19, Mo. (Laciede-Christy Co., Div. H. K. P orter Co.) BRADEN, Roger W. (M) Hammond Lead Products 526 Calumet Bldg., Hammond, Ind. BRADEN, William E. FerTO Corp., Far East Div. Box 5130, Kowloon, Hong Kong BRADFORD. Virgil E. (W J) 574 E. Gates St., Columbus 6, Ohio BRADLEY. Alan L. Cullinan Refractories Ltd. P. O. Olifantsfontein Transvaal, South Africa BRADLEY, Charles A - Jr. (G) Pir.eweod Acres, R. R. 3, Coming, N. Y. (Coming Glass Works) BRADLEY, Edward L. Georgia Institute of Technology Box 4985, Atlanta, Ga. BRADLEY, Fennim ore N. (I) 940 Oregon St., Palo Alto, Calif. BRADLEY. R. S. (R F I) 4 Park Circle, Mexico, Mo. (A. P. Green Fire Brick Co.) 3RADSTREET, Samuel W. (E) Armour Research Foundation 10 W. 35th St.. Chicago 16, 111. BRADWELL. Cyril (RI) Parkhurs: Apts. 7B 3arbara 4 Mario-! Sts., Bethlehem, Pa. (Bethlehem Steel Co.) BRADY. Earl (S) Box 522. Waskom. Texas (Acme 3 rick Co.) BRADY. John G. (3 ) Dept, of Mines 4 Technical Surveys Ceramic Section. 40 Lydia St. Ottawa. C a t . Canada 3 RADY. Justin M. (W) 1320 N. Delaware. Apt. 604 Indiar.apons. Ind. (American A rt Clay Co.) BRADY. T. E. (R) Surface Combustion Corp. 2375 Dorr S t- Toledo 1, Ohio BRAIN. Douglas G. (W ) I960 Jane St. Toronto 15, O nt.. Canada (American Standard Products) BRAMLSTT, William P - Jr. (GI) Cumberland Rd.. R.R. 2. Millville. N. J. (Armstrong Cork Co.) - - ' ' BRANDT. Kristian H. (B) 1076 Karesh Ave., Pomona, Calif. (Convair) 3RANDT, Martha W. (G) National Glass Budget 800 Grogan Bldg- 510 Wood St. Pittsburgh 22. Pa. BRANDT. Neill M. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13, Fa. BRANDT. William O. (W FI) 2951 Delor D r- Los Angeles 32, Calif. BRANT, A rthur M. (R) 156 Ham pden Park Dr., Tiffin, Ohio (Basie. Inc.) BRANT. David G. (R I) 39 Valley View, Tiffin. Ohio (Basic. Inc.) BRASHARES. C. A. (R) Harbison-Walker Refractories Co. 1800 Fanners Bank Bldg. Pittsburgh 22, Pa. R oster 11 BRAsSi-'lELD. Henry C. (i; i K.K. 1. Stevens Rd., Hester, Ohio ! (General Electric Co.) 33AUCXM AN. Alvin J. 3 Kern Ramble, Austin, Texas 'a? ' UN. Garv A. : X 8 2 ; . Allred, X. V. 1 Kenneth J. (W ) '.Venere! Tile Co. ; Xlag & Enterprise Ave. Trenton, N. J. SRAYXOVICH,"A. F. (W ) Humphryes Manufacturing Co. 231 E. Fifth St., Mansfield, Ohio Brasilian Ceramic Society-- see Associacao Brasileira de Cermica BREEDLOVE, James G. (B I) 703 Jam es 31vd. Signal Mountain, Tenn. (American Lava Corp.) BREEME, George A. (G) Industrial Coiloids Co. Emienton, Pa. BREEZE, Lewis K. (E ) 301 E. 238th St,, Willowick, Ohio (Glasete Products, Inc.) 3REITW IESER, Robert H. (R) 1616 W. 27th. Pueblo, Colo. (Standard Fire 3rick Co.) 8REXXE, Trygve Box 266, Stavanger, Norway (Stavangerdint) BREMNER, Robert P. (G) T. L. Sm ith Co. 2335 N. 32nd St. Milwaukee 10, Wise. 3RENNER, Harold M. (E ) 3. F. Drakenfeld 4 Co., Inc. Washington, pa. 3RENNER, R. F. (GF) Anchor Hocking Glass Corp. Lancaster. Ohio 3RESLICH . Francis N., Jr. 3903 ' -.h Ave.. S., Seattle i. Wash. 3" Z, L. A. (S) IS . acodan Dr., Pittsburgh 16, Pa. NATCO Corp.) BREWER. Bob (S) Alamo Clay Products Co., Inc. Box 93. Elmencort, Texas 3REWSTER. Gordon F. (G) 3C7 Ridge Roaa E-, Williamson. N. Y (3auseh 4 Lomb Optical Co.) 3RIAN, Charies (W) Paper Makers Importing Co., Inc. *4 S. Second St., Easton. Pa. 3RIAN. Dick (W ) 422 Florida Ave.. Chester, W. Va. (Harshaw Chemical Co.) IRIAN. S. Douglas (W ) Paper Makers Imoorting Co., Inc. 44 S. Second St.. Easton. Pa. 3RICKHOUSE. Robert E. (R) 206 Fairlawn Blvd.. Zelienopte, Pa. lohns-M anville) IRIGGS MANUFACTURING CO. (A. J. Rable) 415 W. Seymour Ave. C incinnati 16. Ohio IRIGHAM . Ralph V.. Jr. (W I) Beef Rd.. R. R. 3. Syracuse 7, N. Y. O nondaga Pottery Co.) IRINCKERHOFF. J. E. (R) Babcock 4 Wilcox Co. 161 E. 42nd St., New York 17, N. Y. 3RINDLEY. George W. (B) Dept, of Ceramic Technology Pennsylvania State University University Park. Pa. IRIN KM AN . Robert J. 3209 W ayne Ave., Davton 10, Ohio IRISBANE. S. M. 40 Rtverdale Rd.. Hawthorn E2 ctoria, Australia limmonwealth Scientific St Industrial - ..-search Organization) BRISTOW. Robert H. (W I) 57 Sequoia Rd.. R. R. 1 Ballston Lake. N. Y. IGeneral Electric Co.) Vol. 3. NO. 10 (10.10) BR1TCHER, Gordon (W ) 306 Berkeley Dr., Syracuse 10, N. Y. (Syracuse Pottery, Inc.) BRITISH CERAMIC SOCIETY Federation House Stoke-on-Trent, England BRITTAIN, Clifford G. (R J) Autumn St., W orcester, Mass. (Norton Co.) BRITTON. Marvin G. t B) 121 Hornby Dr., Painted post, X. Y. (Corning Glass Works) 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-Thermador Corp.) BROSIUS, John P. (G) 403 Emerson Ave., Aspinwall Pittsburgh 15. Pa. (Krieg Piston Ring Co.) BROSXE, 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) Lihbey-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 Medburv Ave.. Cuba. N. Y. (Cuba Cheese & T rad in g Co.) 3ROWN, Donald N'icoi iG ) 4 E. Third St.. Coming, N. Y. (Coming Glass Works) BROWN. Donovan ?. (RD 2704 Eldon Ave., Drexel Hill, Pa. (North American Refractories Co.) BROWN. George L. (M) 27 S. VanDien Ave., Ridgewood. N. J. (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. (S) 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. 50 Meade St.. Trenton 5. N. J. BROWN. Meredith C. (S) 609 N. Friends Ave. Whittier. Calif. ( Consultant) BROWN. Raymond G. (R ) Strategic-Udy Processes. Inc. Box 835. N iagara Falls. N. Y. BROWN. Raymond J. (X ) 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. Rnssford. Ohio BROWN. William E. (R ) Box 217. R.R. 1. Norristown, Pa. (E. J. I-avino 4 Co.) BROWNE. Thomas C. (R I) 2115 Orchard Dr. South Plainfield. N. J. (Titanium Div.. National Lead Co.) ULUWNELL, Wavne E. (SI) 126 Horneii St.. Kornell, N. Y. (State University of New York. College of Ceramics) BROWNEWELL. George E. (R) Diamond Alkali Co. Box 430, pair.csviile. Ohio BRUCHMANN. Heimu: (M) Haeger Potteries. Inc.. Dundee. 111. BRUEGGERHOFF, Charles (R) Mexicaa Zinc Co.. N. Rosita Coahuila, Mexico BRL'HN, Hans W. (R) Corhart Refractories Co., Inc. 1600 W. Lee St.. Louisville 10, Ky. BRUNNER, Cedric D. (W ) 106 W. Union, Rockton, III. (Ipsenlab of Rockford, Inc.) BRUNO, Lucien V. (S) Guignara Brick Works Columbia, S. C. BRUSH, George D. (SI) Harrop Ceramic Service Co. 35 E. Gay St., Room 413 Columbus 15, Ohio BRUSSE. William, Jr. (E) Temco Inc.. 4104 park Ave. Nashville 9, Tenn. BRYANT. Eugene E. (EFI) 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., Atlanta. Ga. BUCHAN. M. A. (R I) A. P. Green Fire Brick Co. Troy, Idaho BUCK. Forrest W,, Jr. (E) 1209 Loucks Ave.. Scottdaie, Pa. Lithium Carp, 'f A.mer-ca) 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. N. J. (Keasbey Corp.) 3UCXLES, Paul E. MI) 60 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 Sul, W ilmington, Del. BUILDERS BRICK CO. (R. C. Houlahan) 3800 N inth Ave.. S.. Seattle 8. Wash. BULKLEY, 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. N. C. fU. S. Marine Corps) R oster 13 LLOCK, 'Jordon University of Birmingham Dept, o: Bhysicai M etallurgy Edgbastct:, B irm ingham 5, England NGE, Fred H. (M) _ 11. A. K a rra Co , Research Lab. :ing, Mi nr.. . Oscar G. (G r) O cns-Iilinois Box 10j 5--10J 5. Toledo 1. Ohio RCHENAL, Claries H. (W) Cambridge Tiie Mfg. Co.. Box 71 Cincinnati 15, Ohio R C H FIE 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. .RDICK, Milton D. (W F I) Mational 3ureau of Standards Engineering Ceramics Section W ashington 25. D. C. IRDICK. Sidney D. (G) 104 A rgonne St.. C orning. N. Y. (Corning Glass W orks) ' 1RGESS, landlord C. (M F) USOM, APO 923, San Francisco. Calif. TRICE. 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.) JR K ER T, John G.. Jr. 84 Greer. St., Valley Stream, N. Y. JRKHALTER. Edward (SI) 7219 Imeriaaken Dr. Tacoma 99, Wash. (Builders Brick Co.) JR K S. Cecil 11. (R I) 70S Broadway, Steubenville. Ohio (W eirton Steel Co.! L"** EY, Frank N. (W ) irsoil-Humpnryes Div. .g-W am er Corp., llansheid. Ohio URLEY, .Vewtoa Ray (W ) 1864 Dresden Rd.. Zanesville. Ohio (Burley Clav Products Co.) VJRLINGAME. Howard G. (E) California Metal anameiing Co. 6904 E. Siauson Ave. Los Angeies 22. Calif. URNAND, Guy M. (L ife) Messrs. Johnson, Matthey 4 Co., Ltd. 78, Hatton Garden London, E. C. 1. England CRMS, Frederick L. (W ) 400 Grandview Dr., Highland Village Zanesville, Ohio (W att Pottery Co.) URNS. Henry X.. Jr. (S) 1620 Waverland D r., Macon. Ga. (B um s Brick Co.) URMS, Joseph A.. Jr. (M ) Joseph A. Bum s & Son 124 Harrison Ave. Avalon, Pittsburgh 2, Pa. U RN S, R. S. (E ) Armco Steel Corp*. Research Library Middletown. Ohio URRISS. William X. (G) Consolidated Feldspar Dept. In ternational M inerals Sc Chemical Corp. 20 M. W acker D r., Chicago 6, III. BURROUGHS, F. H . (W ) Box 1329. Trenton 7, N. J. (Star Porcelain Co.) 1URTON. Howard 3. (G) 1618 Arlington Ave., St. Paul 17, Minn. 'M innesota Mining Sc Mfg. Co.) J)N. W. A. (S) . 3 E. Fourth St.. Mt. Pleasant, Texas (Paris it Mt. Pleasant R. R.) 1URWTNXEL. Lawrence G,, Jr. (G) Pennsylvania Glass Sand Corp. Two Gateway Center. Pittsburgh 22, Pa. / ol. 35, No. 10 (195C>) BUSH, Edward A. 200 Washington Ave., Vandergrift, Pa. BUSH. James W. (SI) 4550 Delhi Rd,, Cincinnati 58, Ohio (Mateo Corp.) 3USH. Ralph R. (M) _ 520 McKiniey St., North Canton, Ohio (Bonnot Co.) BUSH. W. G.. Sc CO. (John S. Herbert) 174 Third Ave., ML, Nashville 3, Tenn. BUSHONG. R. M. (R) National Carbon Co., Tiffin 4 Town Sts. Fostoria, Ohio BUSSEY'. Donald A. (R) Kaiser Aluminum it Chemical Corp. Refractories Plant Moss Landing, Calif. BUSTEED, Donald J. (R!) 8 Janet Circle, Shrewsbury. Mass. (Bay State Abrasive Products Co.) BUTCHER, L. H.. CO. (George J. Middleton) 3628 E. Olympic Blvd. Los Angeles 23, Calif. 3U TK O V IC H . Edward M. (R) 2848 E. 97th St., Chicago 17, III. (Armour Research Foundation) 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. 950 Leader Bldg., Cleveland 14, Ohio BUTTLE. Robert L. (W) 420 W. Long Ave., Du Bois, Pa. (Jeffers Electronics Div. Speer Carbon Co.) BUTTON. Daniel D. Box 971, Alfred. N. Y. BUTTON, Dudley (D) Mercedes Ceramic Studios 8 Wallace St. Woodbridge. Ont., Canada BUZARD, Fred T. (M) Beil, Pine 4 High Sts., Plymouth, Ohir (Fate-Root-Heath Co.) 3YRNS. Alva C (R) Kaiser Aluminum 4 Chemical Corp- 1924 Broadway, Oakland 12. Calif. c CABANILLAS. Oscar Gonzalez (S) Puerto Rico Clay Products Corp. Box 4729, San Juan, Puerto Rico CABLE. John A. (W) 1011 22nd St. N. E.. Canton 4, Ohio (U nited States Ceramic Tile Co.) CABLE. Margaret (DF) 1520 San Miguel Ave. Santa Barbara, Calif. CABLE. Stephen J. (W) 3615 Eaton, N.W., Canton 9, Ohio (U nited States Ceramic Tile Co.) CABOT, GODFREY 1~, INC. (F ran k E. Daley) 46 Bayard St. New Brunswick, N. J. CACCAMISE, Charles T. (B) Electro Metallurgical Co., 137 47th St Niagara Falls, N. Y. CAHOON. John B,, Jr. (W) 791 McLeod St., Livermore, Calif. (U niversity of California) CAIN. Robert W. 1 603 W. Church S t, Champaign, 111. CAITO. A. M. (R I) Basic, Inc., Maple Grove. Ohio GALA, Charles F. (G) 144 Hoover RcL. Rochester 17. X. Y. (Bausch & L oab Optical Co.) CALABRESE. Donald W. Box 168. Alfred, N. Y. CALDWELL. Helen (D) Board of Education Adm inistration Bldg., 1429 W. Seventh Burlington. Iowa CALDWELL. Smiley. Jr. ;G) 717 Newberry RJ.. Na>hvil!c, Tenn. (Ford Motor Co.) CALDWELL. Smiley M.. I l l 717 Newberry ?.J. Brook Mear.e Subdi\ision Nashville. Tenn. CALDWELL. William D. (E l) Perfection Industries. Inc. 1135 Ivanhoe Rd.. Cleveland 10, Ohio CALLAHAN. H. D, (W FI) United States Ceramic Tiie Co. East Sparta. Ohio CALLAHAN, Robert M. (B) 4553 Seville Ave. Los Angeles 58. Calif. (Solar Mfg. Co.) CALLINAN. Edward E. (RFI) DeXalb Park. Center Square. Pa. (Alan Wood Steel Co.) CALVA. Roberto (3) 3238 E. Second St.. W ichita 3. Kans. (Boeing Airplane Co.) CAMERON. David G. (M) Hallcr-Inc. 684 Ann A rbor Rd.. Plymouth. Mich. CAMERON, Robert A. (G) Corning Glass Works. Coming, M'. Y. CAMPBELL. C. V. (M I) 444 Florida Ave.. Chester. W. Va. (Ferro Corp-) CAMPBELL. Edward S. (G) Northwestern Glass Co. 5801 E. Marginal Way, Seattle 4, Wash. CAMPBELL. Frank, Jr. 3711 15th M'.E., Seattle 5, Wash. CAMPBELL. G. Donald (G) 621 Shelby St.. Shelbyville, Ind. (Pittsburgh Plate Glass Co.) CAMPBELL. Iar. (B) California Institute of Technology Div. of Geological Sciences 1201 E. California St. Pasadena 4 . Caiif. CA.MP3ELL. J. Dougias C.V) Lithium Corp. of America. Inc. 540 Lincoln Bldg.. 60 E. 42nd St. M'cw York 17. N. Y. CAMPBELL. Robert J.. Jr. (B) University of W ashington 324 Roberts Hall. Seattle 5. Wash. CAMPBELL. Robert M. CWFT) Alfred. M". Y. (State University of New Y'ork, College of Ceramics) CAMPBELL. Tom W. (R) Box 303, Poland. Ohio (Electro Refractories 4 Abrasives Corp.) CAMPBELL, Van E. (W ) 363 Highland Ave., Wadsworth, Ohio (Ohio Brass Co.) CAMPOS, F. Torres Fabrica Nacional de Vidrio. C. A. Box 1049. Caracas, Venezuela CANADIAN CERAMIC SOCIETY (Miss L. C. Keith). 49 Turner Rd. Toronto 10, Ont.. Canada CANFIELD, J. J. (EF) 2909 Orlando Dr.. Middletown 20, Ohio (Armco Steei Corp.) CANNING, Robert (G) 202 Fox Chaoel Rd.. Pittsburgh 38, Pa. (Pittsburgh Plate Glass Co.) CANNON, John D. 2167 Highview Rd.. S. W. Atlanta 11. Ga. CAPEX, Raymond G. 2646 S. C arence Ave.. Berwyn. 111. CAPELLMAN. John J. (R) 1118 Highland St,, Tarentum I, Pa. (Pittsburgh Plate Glass Co.) CAPPS. Hubert. Jr. (S) R.R. 1. Coffeyville. Kans. (Ludowici-Celadon Co.) CAPPS, Webster (G) National Bureau of Standards Washington 25, D. C. R oster 15 R SO R U N D U M CO. (H . C. Martin) Surfait) Ave.. Niagara Fails. N. Y. RDER. Frederick (H o n o rar/, GF) Corning Glass W orks Vycor Div., C orning, N. Y. REV. J. Skeiccn (D ) _ 't. of Design, University of Kansas icace. Kars, k . George r . 623 S. Seminole. Okmulgee, Okla. XL. John E. i.Gij Corntr.g Giass Works Box 544. Corning. N. Y. R L5E N , F rederick L-, Jr. Box 623. Georgia Tech.. Atlanta. Ga. RLSON. Joseph A. (S) 50 Hawthorne St. San Francisco 5, Calif. (K raftile Co.) RLSON. Robert H. (W) Univcrsai-Rundle Corp. Box 960. New Castle, ?a. RLSON, Wiiliara G. (R I) 175 Gienneld Dr., Pittsburgh 35, Pa. (Westinghouse Electric Corp.) RLYLE, Edward C. (S) Box 128, I ronton, Ohio (Carlyle Tiie Co.) RNAHAN, Thomas D. (MI) B. F. Drakenfeld 3c Co., Inc. 3 o x 519, Washington. Pa. R N ES, Kenneth C. (G) Toledo Engineering Co., Inc. 3001 Syivania Ave., Toledo 13, Ohio R NIGLIA . Stephen C. (B) Food Mach. 3c Chemical Corp. 161 E. a2nd S:., New Y'ork 17, N. Y. .RO. Robert (M) Hedi Schoop A rt Creations, Box 38a North Hollywood, Calif. .ROTKERS. H arry S. (M) H . C. Spinks Clay Co.. Ir.c. 1C00 Firs: National Bank Bidg. 'cinnati 2, Ohio . HERS. R. B. (M r) G. Spinks Clay Co., Inc. 3ox 829, Paris. Tenn. vROTHERS. Richard 3., Jr. (M) H . C. Spinks Clay Co., Inc. Box 829. Paris. Tenn. tRGTHEP.S. T. E. (M ) Gladding. McBean & Co. 2901 Los Feiia Blvd. Los Angetes 39, Calif. `.R P E N T E R . F. Scott. Jr. (W) W hite Pigments Division Godfrey L. Cabot, Inc., 77 Franklin St. Boston 10. Mass. ARPENTER. Woodrow (E) Barrows Porcelain Enamel Corp. Langdon Rd. & Penn. R. R. Cincinnati 13. Ohio ARR-LOW REY GLASS CO. (Norman R. Beck) Baltimore 3, Md. ARROLL. Jerry W. (W J) a i7 S. W estern Ave., Kokomo, Ind. (American Radiator 4 Standard Sanitary Corp.) ARROLL. William F. (W ) 3499 McNally Ave., Altadena, Calif. (Florence Ceramics Co.) ARRUTHERS. John L. ( S r i ) Lord Hall, Ohio State University . Columbus 10, Ohio ARTER, D. R. (M) Eagle-Picher Co. American Bldg., Cincinnati 1, Ohio ARTER. F. B. (W I) Tiffin 12. Ohio (American-Standard Corp.) A' 'E R , George J. :02 20th N.E.. Seattle 5S, Wash. V. . ER, Gerard T. (W ) O akland St,, R.R. 1, Box ll-A M attapoisett. Mass. (C om ell-D ubiiier Electric Corp.) OL. 35, No. 10 (1956) CARTER, Herbert D. (W F i) 3351 Dorchester Rd. Shaker Heights 20, Ohio (Harshaw Chemical Co.) CARTER. J. Guild (M) Eureka Feldspar Mining & Milling Co., Inc.. 190 W. State St. Trenton 8. N. J. CARTWRIGHT, S. V. (S i) 1224 Victoria Ave., Corona. Caiif. (Jordan Tiie Mfg. Co.) CARVL1N. George M,, Jr. (R) Koppers Co., Inc., Koppers Bldg. Pittsburgh 19, Pa. CASAMO, Charles C. (G) Syivania Electric Products. Inc. Emporium. Pa. CASE MANUFACTURING CORP. (Willard G. Y'oung) 1000 W. Pine St.. Robinson, 111. CASSADY, Bert L. (R) 5115 S. Lewis Ave.. Tulsa 15, Okla. CATON. Milton W. (R F) 22490 Nevada Ave., East Detroit, Mich. (Ceramic Div., Champion Spark Plug Co.) CAVANAUGH. D. J. (W I) 822 32nd St., Parkersburg. W. Va. (United States Ceramic Tile Co.) CAWOOD. Richard L. (M) East Liverpool, Ohio (Patterson Foundry & Machine Co.) CAYFORD. 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 3 Christie Sts., Newark 5, N. J. CENTRAL SILICA CO. (E. C. Sawyer) 806 Market St., Zanesville. Ohio CERAMIC ASSOCIATION OF JAPAN (Yogyo Kyokwai) 7, Shiba-Nishikubo-Sakuragawacho Minato-ku. Tokyo, Japan CERAMIC COLOR & CHEMICAL MFG. CO. (W. F. Wenning) Box 297. New Brighton. Pa. CERAMIQUE MAASTRICHT, N.V. (Comte L. de Meeus d'Argenteuil) Koge Barakkenstraa: 6 Maastricht. Netherlands CERMAK. Frank (W F) 1542 Union St., Schenectady 9, N. Y. CERNY. Joseph J. (E) 5226-28 W. 26th St. Chicago SO (Cicero) 111. (Resistors. Inc.) CERTILLI, Nicholas F. 73 Forest Ave., Caldwell, N. J. CHADEYRON. A. A. G. Cleveland Magnesite & Refractory Co. Ltd. Normanby Brickworks, Normanby Middlesbrough, York, England CHAI, Ki-Kon 210 Linden Ave.. Ithaca. N. Y. CHAMBERLAIN. James M. W. (B) U. S. Stoneware Co.. Box 350 Akron 9, Ohio CHAMBERS, Fred (M) National Gypsum Co., Luckey. Ohio CHAMBERS. Gordon H . (M) Foote Mineral Co., 18 W. Cheiten Ave. Philadelphia 44, Pa. CHAMPION SPARK PLUG CO.. CERAMIC DIV. (James S. Owens) 8S2S Butler Ave., Detroit 11, Mich. CHANTLER, L. W. (R) Standard Lime & Cement Co. Millville, W. Va. CHAPMAN. Alan T. 1563 W orthington St. Columbus, Ohio CHAPMAN. Frank E., Jr. (E l) 1026 Middlesex Rd.. Baltimore 21, Md. (Pemco Corp.) CHAPMAN. G. Marsh (W) H arshaw Chemical Co. 6265 W iehe Rd.. Cincinnati 13. Ohio CH AR3 0 N N i E R. William ?. (R) . Walsh Refractories Corp. 101 Ferry St.. St. Louis 7, Mo CHARLAND. Tel L. (RI) 317 W. Kerr Dr., Midwest City, Okla. (Phillips petroleum Co.) CHARLTON. Alex E. (W) Photoceramics, Inc. 1822 Western Ave., Cincinnati 14. Ohio CHA RTERS. Melvin L. 12 Marvin Ln.. New Brunswick, N. J. CHASE. Dana (EF) Dana Chase Publications Elmhurst National Bank Bldg. York St. at Park Ave., Elmhurst. 111. CHASE, H arry K. (R) 4040 Lakeshore Ave., Oakland, Calif. (W estern Refractories Co.) CHATTAHOOCHEE BRICK CO. (Paul M. C ark) Caattahoochee, Ga. CHATTANOOGA GLASS CO. (Joe G. Venable) Caattanooga 10, Tenn. CHAUM EIL. Frederic Verreries de Bagneaux et Appert Ferres Bagneaux s/Loing Seine et Marne, France CHEN. Louis 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 Steel Companies Ltd. Research & Development Dept. "Sw inden Laboratories ', Moorgate Rotherham. Yorks. England CHICAGO POTTERY CO. (J. S. Clifford! 1920 Clybourn Ave. Chicago 14, 111. CHICAGO VITREOUS CORP. (William Hogenson'i 1425 S. 55th Court Cicero 50. III. CHILCOTE, Joseph H. (R) 1907 16th St.. N.. Arlington i, Va. (Bureau of Ships, Navy Dept.) CHILD, James L,, Jr. 'S) Hancock Brick 3t Tile Co., 3ox 450 Findlay, Ohio C H I O S . Clayton G. (B) 2257 N. York St,, Owensboro, Ky. (General Electric Co.) C H ILD S. Edwin E.. Jr. (E) 1604 Greenspring Dr., Lutherville. Md. ( Pem co Corp.) C H ILD S. Cary D. Box 826, Alfred. N. Y. CHING. T ung Rey (J) 31 Soares Ave., Grd. Fir. Kowloon. Hong Kong . . (1-Feng Enamelling Co. (H.K.'), Ltd.) CHIOCHETT1. Vincent E. J. (G) Box 67, West Garksville, N. Y. (B ausch 3c Lomb Optical Co.) C H ISH O LM . BOYD 4 W H IT E CO. (Robert A. Ebersole) 610 W. 57th St. Chicago 21, 111. CHORMANN, O. I. (E) 19S Gregory Hill Rd. Rochester 20, N. Y. CHO THIA . Boman S. Wadia Bldg., 137 Queen's Rd. Bombay, India (British Hartford Fairmont Ltd.) CHRISTENSEN. Carl J. (B) University of Utah Salt Lake City 1, Utah CHRISTENSEN , Chr. Royal Copenhagen Porcelain Manufactory it The Faience Manufactory Aluminia Smallegade 45, Copenhagen F., Denmark R oster 17 C HRISTIE, Leonard D.. Jr. (R) i f 343 Sound Beach Ave. j Old Greenwich, Conn. ] (Babcock & Wilcox Co.) CHRISTMAN, 3rian 3. (W) 35 E ggert Ave.. M etuchen, N. J. 1 (R heem M anufacturing Co.) I STM AN, C. E. (E) !' Federal Enameling i Stamping Co. . Pittsburgh, Pa. CHRISTMAN, H. M. (R I) ( 1514 1Hh St., N.E., Massillon, Ohio i (M assillon Refractories Co.) CHRISTO PHER. A. B. (S) Chambers Bros. Co., 52 it Media Philadelphia 31, Pa. CHU. Gordon ? . X. (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 lobar Div., Carborundum Co.) CIA- M EX ICAN A D E REFRACTARIOS A. P. G REEN , S. A. (H . Fetter) Hamburgo 51, Aparcado Postal 71 Bis Mexico. D. F. CICHOW SXI. V. J. (E ) Fusite Corp., 5000 Femview Ave. Cincinnati 13. Ohio CINCINNATI MILLING PRODS DIV. CINCINNATI M ILLING M A C H IN E CO. (H ayward A. Gay) 4701 Marburg Ave., Cincinnati 9, Ohio CLARE, Robert L. (S F I) 212 R ector St., P erth Amboy, N. J. (L aredef Corp. of New Jersey) CLARK, Alec W. Beatson. Clark 3c Co., Ltd. Rotherham. York, England CLARK. A rth u r R. (B) Box 352. Far Hills. N. J. <roxlyr. Laboratories) CLARK. C. 3 u r:o n (3 ) "66 Meadowcrest Dr. Ittsburgh 23, ?a. vHarbison-W'alker Refractories Co.) ILARK. Darnel J. (S) Vitro Mtg. Co.. 60 Greenway Dr. Pittsburgh 4, ?a. ILARK. H .race N. <E) Refractorv 4 Insulation Corp. 120 W ail St.. New York 5, N. Y. ILA RK . Jam es IS) ISO Y ates St.. Denver. Colo. (R obinson Brick 3c Tile Co.) ILARK, John D. (XI) 656 Linaley Rd.. Glcnside, Pa. (Foote Mineral Co.) ILARK, Paul M. (S) Chattahoochee Brick Co. Chattahoochee, Ga. ILARK. Richard E. (M I) 4104 D unhaven Rd.. Dallas, Texas (R . T. V anderbilt Co.. Inc.) ILARK, Thaddeus J. E. (W) 113 Elmore Ave., Trenton 9, N. J. (Trenton Potteries Co.) ."LARK. W. D.. Jr. (R) A. P. G reen Fire Brick Co. M exico. Mo. ILARXE, Ford K. (G) Fhilco Corp., Church Rd., Lansdale, Pa. LARKE, James A. Bilston Foundries Ltd. Highfields, Bilston, Staffs, England -LAUS. K arl M. (W) Mosaic Tile Co., Pershing Rd. Zanesville. Ohio .LAY. W ilfred (E ) K aiser Metal Products, Radcliife S t ^stol, Pa. 3URN CO- LTD. M. Hnngerford) 850 W . Hastings St. V ancouver 9, 3. C., Canada OL. 35, N o. 10 (1956) CLAYCRAFT CO. (Phillip W. Tefft) COGEN. Saul (S) Box 866, Columbus 16, Ohio CLAYPOOLE, Stewart A. (G) R.R. 2. Painted Post. N. Y. (Corning Glass Works) CLEEK, Given W. (G) National Bureau of Standards Washington 2S, D. C. CLEMENS, August, Jr. (M) 205 E. Gittings Ave., Baltimore 12, Md. (Arcrods Corp.) CLEMENS, Eugene C. (SFI) Cannelton Sewer Pipe Co. Cannelton, led. CLEVELAND, George B. (B) California Div. of Mines 217 W. First St. Los Angeles 12, Calif. CLEVELAND MUSEUM O F ART (William M. Milliken) Cleveland 6, Ohio CLEVELAND, Theodore K. (G) Philadelphia Quartz Co. of California Sixth & Grayson Sts. Davidson 3rick Co., 4701 Floral Dr. Los Angeles 22, Calif. COGHILL, H. T. (X) 2023 Coillngswood Rd. Columbus 21, Ohio (Refractor.es Div., Carborundum Co.) COHEN, Aaron (S) Box 405, Wiiumir.a, Ore. (Wlllamina Clay Products) COHEN. Alvin J. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13, ?a. COHEN, Arthur E. (G) Sylvania Electric Products, Inc. Cottage Place, Miceola, N. Y. COHEN, Bernard (G) 130 Spruce Wood Circle Geneva, N. Y. (Sylvania Electric Products, Inc.) COIN, R. H. (E) Ingram-Richardson, Inc. Jefferson Rd., Frankfort, Ind. Berkeley 10, Calif. COLCORD. John E. (RJ) CLEVENGER, Thomas R. 1706 Sherman Ave. ' Massachusetts Institute of Tech. Rm. 20-C-001, Cambridge. Mass. South Bend 16, Ind. (Bendix Aviation Corp.) CLEVER, William R. (G) COLE. David L. 401 N. Elm St., Lincoln, 111. Box 611, Alfred, N. Y. (Pittsburgh Plate Glass Co.) COLE, G. Percy (G) CLEVERLY. Robert B. (S I) 22120 Westwood Rd. Dominion Glass Co., Ltd. Box 190, Montreal, Que., Canada Fairview Park 26, Ohio COLE, Harold R. (R) (Universal Sewer Pipe Corp.) National Carbon Co. CLEWS, Francis H. Town St., Fostoria, Ohio British Ceramic Research Assn. COLE. Sandford S. (B FI) Meilor Laboratories, Shelton Titanium Divisioa, National Lead Co. Stoke-on-Trent. England Research Dept.. Box 53 CLIFFORD, J. S. (W ) South Amboy, N. J. Chicago Pottery Co. COLE. Sandford S.. Jr. (R I) 1920 Qybourn Ave.. Chicago 14. 111. Power Tube Div., Raytheon Mfg. Co. CLINE, I. R. (S) Waltham 54, Mass. Western Brick Co., Danville, III. COLEMAN. 3 race G. CLINE. Robert W. (W I) 377 Main St., East Aurora, N. Y. J 3c AP Scott Ltd. Box 209. Dunedin, New Zealand (Onondaga Pottery Co.) COLEMAN. Caruthers A. (S) C L IP P E R DIAMOND TO O L CO., IN C (Joseph Xlipperl 345 Hudson St. Big Run Ccal 4 Clay Co. 133 N. Limestone St., Lexington, Xy. New York 14. N. Y. COLEMAN. J. C. (G) CLOSE, Barbara S. 36 Lenox ?1,, Middletown. N. Y. 3746 Maoleway Dr,, Toledo 14. Ohio (Kimble Glass Co.) CLOSE, Paul (G) Owens-Illincis Box 1035--6, Toledo, Ohio COLEMAN, Robert L. (SI) _ 20631 Greenwood. Olympia rieids. 111. (Chicago 3rick Co.) CLOUGH, Philip J. (R ) COLEMAN, Thomas B. (S) National Research Corp. 63S Tarboro St., Rocky Mount, N. C. 70 Memorial Dr.. Cambridge 42, Mass. (Nash Brick Co., Inc.) CLOWES. E. J. (W) COLLIER, Roger E. Cowes Ceramic Corp. Glenwood Park Apts., Apt. 1 3711 Calhoun Ave. 2605 Oak S t, Chattanooga. Tenn. Chattanooga 7, Tenn. CM OLIK. C arence G. (B) COLLINS. G. F. (G) Pittsburgh Plate Glass Co., Box 750 4403 Sheraton Dr., Parm a 29, Ohio Henryetta. Okla. (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, M iatnisbnrg, Ohio (Frigidaire Div., General Motors Corp.) COEN, Bernard (W ) Woodbridge Sanitary Pottery Corp. 500 Green S t, Woodbridge. N. J. COFFEEN, William W. (E H ) 1024 Boulevard. Westfield, N. J. (Metal & Thermit Corp.) COFFER, L. Wallace (B ) COLLINS. Paul F. (W I) . - Austenal. Inc. 7001 S. Chicago Ave.. Chicago 37, III. COLLINS. William G. (31) Johna-Manville Corp., Waukegan, 111. COLONIAL INSULATOR CO. (Frank Mason) 945 Grant St. Akron II, Ohio COLOSKY, Benjamin P. School of Ceramics Rutgers University New Brunswick, N. J. COLUMBIA FIR E BRICK CO. (M. L. Hamaker) 612 First National Bank Bldg. Canton 2, Ohio Extractive Metallurgy Division COLUMBIA-SOUTHERN Battelle Memorial Institute CHEM ICAL CORP. (R. W . Miller) 505 King Ave- Columbus 1, Ohio One Gateway Center, Pittsburgh 22, Pa. COFHN, Leon B. (W) COMEFORO, J. E. (W) Andover, N. Y. Frenchtown Porcelain Co. (Alfred University) Frenchtown, N. J. R oster 19 i.MER, Richard L. (W) 6161 Springdale Blvd. Grand Blanc. Mich. (A C Spark Plug Div. General Motors Corp.) JMMERCIAL DECAL. INC. (Alfred Duhrssen) Box *59 t Liverpool. Ohio : jlRClALORSS, INC. , ..oert R. Eckei) Cover, S. C. 1MMONS, Charles H.. Jr. (W FI) Forest Lane, R. R. 2, Malvern, Pa. (Foote Mineral Co.) IMFAGNUCCI. Julius P. (W ) Bay Ridge Specialty Co., Inc. Stokes Ave., Trenton 10, N. J. 1MPANHIA PAULISTA D E MINERACAO (E duardo C. Simonsen) Caixa Postal 3.003, Sao Paulo, Brazil )NARD, John B. (S) 600 Hawthorne Lane. Mansfield, Ohio (Richland Shale Brick Co.) )N DO N. Edward C. (G) 6604 W aterm an Ave., St. Louis 5, Mo. (Consultant) )N E. Carroll (G) 1387 Virginia Ave., Columbus 12. Ohio (E . I. du Pont de Nemours 4 Co.) DNLEY, Jam es M. 363 N. T ran sit St,, Lockport, X. Y. JN N , Willi- M. (G) 6312 Indiana Ave., Kansas City 30, Mo. (Consultant) DNNELL, George A. (B) Pacific Coast Borax Co.. Box 9123 Station S, Los Angeles 5, Calif. JN N ELLY , Daniel S. (R ) 2801 N. Park Blvd. Cleveland Heights 18, Ohio (Ohio Crankshaft Co.) DNOVER, Ray C. (R I) Gladding, Mc3ean & Co. 1006 Alcalde Way, Glendale 7, Calif. DNRAD, Charles_E.. Jr. (G) __ T'hbey-Owens-rord Glass Co. t 4273. Charleston 4, \V. Va. _ AD, K eith (G) Owens-Illinois Box 1019. Oakland 4, Calif. ONROE, Barden A. (G) 93 Gorton St., Corning, N. Y. (Corning Glass Works) ON SOLID ATED FELD SPA R DEPT. INTERNATIONAL MINERALS * CHEMICAL CORP. (William K. Burriss) 20 N. W acker Dr.. Chicago 6. 111. ONSO LID ATED GLASS WORKS. L TD . (I. Donen) Box 562 Genniston. 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., Metuchen, N- J. (Automatic Mfg. Co.) OXWAY. Myron J. (W) 943 O rchard St., Zanesville, Ohio (M osaic Tile Co.) lOOK. A. W. H argreaves Mill Ltd., Botteslow St. Hanley, Stoke-on-Trent, England lOOK. Eugene M. (G) 509 Broadlawn Terrace, Vineland, X. J. (Kimble Glass Co.) lOOK. Herman L. (EF) _ 1555 Beardsley Ave.. Muskegon, Mich. (Norge Div., Borg-Warner Corp.) lOOK. Leslie J. (M) 1621 Relies Valley Rd. Lafayette. Calif. (Leslie Cook Laboratories) IP '-'K , Louis S. 35 H ighland Dr. ilt Lake City 7, U tah COOK, Ralph L. (EFI) 204 Ceramics Bldg. University of Illinois, Urbana. 111. Vol. 33. N o. 10 (1956) COOK, W. Howard (R) Box 131, Norris. Tenn. (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,, Haddonneld. N. J. (Universal-Rundle Corp.) COOKE, Robert S. (E) Industrial Centre --5 Quebec, Que., Canada (Crane Steelware, Ltd.) COOKE. William C. (G) Blue Ridge Glass Corp. Kingsport, Tenn. COOMBS. W. M. (G) Owens-Illinois Bridgeton Plant No. 14, Bridgeton, X. J. COOPER, Alfred R. (G) 45 Orchard St. Jamaica Plain. Mass. (E m hart Mfg. Co.) COOPER. George I. (W ) 401-Mackley Apts., Philadelphia 24, Pa. (Signal Corps Supply Agency) COOPER. Joseph Knoxville. Tioga County, Pa. COOPER. Roger C. (E) Fusite Corp., 6000 Femview 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. Scbring, Ohio COPELAND, R. Spencer C. W. T. Copeland & Sons Ltd. Spode Works Stoke-on-Trent, England CORBAN, Wilbur H. (W) 3198 Dresden Rd.. Zanesville. Ohio (Ceramic Supply Co.) CORBMAN, Mitchell (S) _ New Jersey Shale Brick L Tile Corp. Box 249, Somerville. X. J. CORBMAN. Morriss (S) New Jersey Shale Brick 4 Tile Corp. Box 249, Somerville, X. J. CORDES. John E. (W I) 5333 Humboldt Ave., S. Minneapolis 19, Minn. (Lithinm Corp. of America. Inc.) CORHART REFRACTORIES CO- IN C (Frederick S. Thompson) 1600 W. Lee St.. Louisville 10, Ky. CORNING GLASS WORKS (Howard R. Lillie) Corning. X. Y. CORNISH. Frank L. (G) Corning Glass Works, Charleroi, Pa. CORNWELL. George L. (B) 171 Eiseman, Kennre 17, N. Y. (Exolon Co.) CORRADA. Marco A. (G) Puerto Rico Glass Corp. Box 4272, San Joan. Puerto Rico CORSON. Robert (GJ) 90 Cayuga SL, Seneca Falls, N. Y. (Syivania Electric Products, Inc.) CORWIN, Rudolph E. (B) Applied Physics Laboratory University of Washington 1013 E. 40th St., Seattle 5, 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, Hanley Stoke-on-Trer.:, Stafford, England COUCH. Albert K .J.R FI) Libbey-Ower.s-rord Glass Co. 1701 E. Broadway, Toledo 5, Ohio COUGHANOUR. L. W. .3 ) 4094 Ben Lomond Dr., Palo Alto. Calif. (General Electric Microwave Lab.) COULTER, William G. (M) 4824 Meadowiar.e N. \V.. Canton, Ohio (Pemco Corp.: COUNTS. William E. (3 ) 1422 W. Home Ave., Fiint, 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 H awthorne Ln,, Kankakee. 111. (A. O. Smith Corp.) COURTER. R. F. (M) Globar Div., Carborundum Co. Niagara Falls. X. Y. COURTNEY, Scon J. (M) B. F. Drakenfeld 4 Co. 45-47 Park New York 7, N. Y. COUTANT. Edward R. (G) General Electric Co., 1235 Boston Ave. Bridgeport 2, Conn. COVAN. H. E. (M) R. R. 3, Box 10, 3 rv an , Texas (Orton Foundation) COWAN. J. G. -Roselands," Billington Haughton, Stair, England (Universal Grinding Wheel Co.) COWAN, R. Guy (D F) 416 Brooklea Dr., Fayetteville. X. Y. (Onondaga Pottery Co.) COWAN, Robert E. (3J) Westinghouse Atomic Power Div. Box 1468, Pittsburgh 30, Pa. COWELL. J. Robert, Jr. (G) Woodvitle Lime Products Co. . 2140 Jefferson Ave.. Toledo 2. Ohio COWLES, Robert J. (W) Quality Components. inc. St. Marys, Pa. COWLES, Roderick J. (R) Walworth Co.. 300 E. First St. South Boston 27, Mass. COWLING. Kenneth W. 79 Norwood Rd. Sheffield 5. England (Thos. Marshall 4 Co., Ltd.) COX, Edwin H. (E) 20111 Wickseld Ave. Cleveland 22. Ohio (Ferro Corp.) COX. John E. (E) Mellon Institute 4400 Fifth Ave.. Pittsburgh 13, Pa. COX. Paul E. (SF) 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 4 Co., Ltd. W ear Glass Works Sunderland. Durham, England COY. John Joel (E) 1689 V ictoria P ark Ave.. Apt. 410 Scarboroogh. Ont., Canada (Frigidaire Products of Canada, Ltd.) CRAFT. R. S. (R ) Findlay Clay Products Co. Washington, Pa. CRAIG, Bruce G. (E) 4520 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'.ories. L:d. 540 Canada Cement Bid?. Montreal 2, Que., Canada IA IG , John D.. Jr. (W ) 14 Emerald Ln.. Levtttown, Pa. ' `'tiro Mfg. Co.; : JR, W. E. (W FI) ,ustrial Ceramic Products, Inc. 965 W. Fifth Ave., Columbus 3, Ohio IAXDALL. Fusene R. (RI) 253 Gulf St., Milford, Conn. (Mullite Refractories Co.) IANDALL, James R. (E l) 4514 Chestnut St., Bethesda 14, Md. (National Bureau of Standards) IANDALL, William B. (R I) Bo* 707, Alfred, N. Y. (O.N.R. Research Project) IA N DON, A. S. (G) A m erican W indow Glass Co. 20th Floor, Farm ers 3 a n k Bid?. Pittsburgh 22, Pa. TANE CO.. CHATTANOOGA DIV. (W . M. Hamilton) 33rd and Alton Park Blvd. Chattanooga 1, Tenn. SANE-PACIFIC CO. (A rthur E. Hoch) 330 W. Citrus St., Colton, Calif. IA VEN , Henry E. (R) Davison Chemical Co. Div. of W. R. Grace & Co., Box 885 Lake Charles, La. IA W FO R D , George E. (W F I) 221 Sumner Ave., New Castle, Pa. (Universal-Rundle Corp.) IA W FORD, George S. (M) University of British Columbia B. C. Research Council Vancouver 3, 3. C., Canada RAWFORD. J. C , Jr. (R) Johns-Manville Sales Corp. 22 E. 40th St.. New York 16, N. Y. 7.AW FORD. J. L. (RFI* '4 Foothill Rd. ita Barbara, Calif. Rn~O N. W aiter F. (R) Babcock 4 Wilcox Co. 1040 National City Bank Bldg. Cleveland 14, Ohio RESS, William C. SII Carolina Ceramics. Inc. R.R. 3, Columbia. S. C. SESSY, M erten ;G) E m hart M anufacturing Co. 333 Homestead Ave. H artford 2. Conn. RIDER, Paul H. (E) 1993 Butler Dr.. T urtle Creek, Pa. (United States Steel Corp.) R IS P IN O , Joseph C. (R ) Corning Glass W orks C om ing, N. Y. . A. CRISTALERIAS DEL URUGUAY (Francisco J. Cercar) 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. RONINGER, George J. (M ) A. J. Wahl. Inc., 8 Central Ave. . Brocton, N. Y. ROO K, Charles Edmund (W) Los Angeles Chemical Co. 4545 Ardine St.. South Gate, Calif. ROOKSTON. James A. (R I) 1224 E. Jackson St.. Mexico, Mo. P. Green Fire Brick Co.) I) iCSVILLE CHINA CO. vHarry J. Bennett) Crooksville, Ohio :ROOM . H enry C. (S JI) 893 Boulevard, Macon, Ga. (B urns Brick Co.) CROSBY, Donald P. t.RI; Harbison-Waiker Refractories Co. Fulton, Mo. CROSKEY. Carl D. tW ; 20S Rollingdale Rd. Catonsviile 33. Md. t Insulator Dept. General Electric Co.) CROSS. A. H. B. Brown-Firth Research Lab. Princess St., Sheffield 4 , York, England CROSS. Charles D. (S) 1203 Ninth Ave., Jasper, Ala. (Natco Corp.) CROSSAN. W. A. (S) Metropolitan Brick, Inc. 1017 Renkert Bldg.. Canton 2, Ohio CROSSLEY MACHINE CO. 301 Monmouth St., Trenton 9, X. J. CROUCH. Lester A. Georgia Institute of Technology Box 270. Atlanta, Ga. CROWE, Samuel H.. Jr. (G) 416 Mississippi Ave., Crystal City. Mo. (Pittsburgh Plate Glass Co.) CROWELL, Robert W. (G) Kimble Glass Co., 711 Southwood Ave. Columbus. Ohio CROWLEY. Henry L. (3) 365 Forest Rd., South Orange, X. J. (Henry L. Crowley & Co., Inc.) CROWLEY. Michael S. (I) Pennsylvania State University Dept, of Geophysics Geochemistry 223 Mineral Sci. Bldg. University Park, Pa. CRUIKSHANK, C. L. (M) Great Lakes Foundry Sand Co. 720 United Artists Bldg. Detroit 26, Mich. CUMMINGS, J. M. (M) British Columbia Cement Co., Ltd. B. C. Cement Bldg. Victoria, B. C.. Canada CUMMINS, Arthur 3. IB) Morning Glory Rd., Bound Brook, N. J. (Johns-Manville Corp.) CUMMINS. Robert K. (G) General Electric Co., 1133 E. !52nd St. Cleveland 10, Ohio CUNLIFFE, J. A. (S) 266 Seventh St. Medicine Hat, Alta., Canada (Medicine Hat Brick 4 Tile Co.. Ltd.) CUNNINGHAM. James A. (S) Adams Clay Products Co., Box 226 Martinsville, Ind. CUNNINGHAM. Robert J. (G) D ark Ave., R.R. 5. Newark. Ohio (Owens-Coming Fiberglas Corp.) CUPIDRO. Vincent N. (W ) 2204 Kirchoff Rd. Arlington Heights, III. (Radio Materials Corp.) CURCIO, Anthony L. (W I) 21 Church St., Bound Brook. X. J. (General Ceramics Corp.) CURRAN. EDWARD ENGINEERING. LTD . (D. Ryan) Cardiff, Wales CURRAN. Martin T. Box 562, Alfred, N. Y. CURRAN, Robert (RI) 75-08 35th Ave. Jackson Heights 72, N. Y. , (Plibrico Co.) CURRIE. Thomas E. (S) 331 W. College Ave., State College, Pa. (Pennsylvania State University) CURRY. William J., Jr. (R) Hiram Swank's Sons, Box 630 Johnstown, Pa. CURTIS. Carl E. (RI) R. R. 3, Kingston. Tenn. (Union Carbide Nuclear Corp.) CURTIS. Miles E (E) 301 Brunswick Rd.. Louisville 7, Ky. (Fcito Corp.) rOL. 35, N o. 10 (19.56) CURTIS. W.;i:am_H.. Jr. (.EJ) 1424 Monte Sar.o Ave., Augusta. Ga. (U. S. Army) CURTS. R. M. (C) _ American Potash 4 Chemical Corp. 99 Park Ave., Mew York, N. Y. CUSiCK. Ckaries 5. 0 1 Pittsburgh Plate Glass Co. Wks. 4. Ford Citv, ?a. CUTHILL, John R. (El Enameled Metals Section National Bureau ci Standards Washington 25, D. C. CUTLER. Ivan 3. (3) 220 Mines 31dg., University of Utah Salt Lake City 12, Utah CZARNECKI. Kamil 3. 29, W hitehall London S. W. 1, England (Aglite. Ltd.) CZECHOSLOVAK CERAMIC AND GLASS SOCIETY (R. Barta) Techr.icka ul.c.5 Praha XIX. Czechoslovakia D D'ADRIAX. Vincent L. D. (G) Mississippi Valley Research Lao., Inc. 901 S. 13th Sc., St. Louis 3, Mo. DAGER, Prabert W. (M FI) 5628 Greenbush, Van Nuys, Calif. (H . C. Spinks Clay Co.) DALE, Alfred J. Johnson Bros. (Hanley) Ltd. Stoke-on-Trent, England DALEY. Frank E. (M) Godfrey L. Cabot, Inc. 46 Bayard St.. New Brunswick, N. J. DALTON. Roben H. (G) 234 Detevan Ave., Coming, N. Y. (Coming Glass Works) DAMERON. Joseph J. (S) Coates Co., Box 935. Austin. Texas D AN IELSO N, R. R. i E F I) 120 Richmond Terrace, Rahway, N. J. (Metal 4 Thermit Carp.) DANK, Milton (Gi Owens-Illinois, General Research Div. Toledo 1. Ohio DANKS, William H. (G) 215 Mississipci Ave.. Crystal City, Mo. (Pittsburgh Plate Glass Co.) DARBY. George M. CM) 61 Washington Ave., Westport, Conn. (DorT-Oliver. Inc.) DARLING. D. G. CS) Toronto Brick Co.. Ltd. 425 Bayview Ave. Toronto 17, Ont., Canada DARNELL. H annon C. (S) Murray Tile Co., Inc., Cloverport, Ky, DARRAH. W. A. (E) 901 N. Oak Park Blvd., Oak Park, III. (Continental Industrial Engineers, Inc.) DAS GUPTA, A. K. (W ) -- ' ` A llen-3radley Co. 136 W. Greenneid Ave. Milwaukee 4, Wise. DAUMKE. Arthur H. (W) 17 W. 170 Hillside Ln.. Hinsdale. III. (H arshaw Chemical Co.) DAUWALTER. A. C. (S) W. S. Dickey Clay Mfg. Co. 607 Commerce T rust Bldg. Kansas City 6, Mo. DAVENPORT, W arren H. (R) 53 Paine S t, W orcester 5, Mass. (N orton Co.) DAVEY. Earl R. (W ) Canadian Ohio Brass Co.. Ltd. Niagara Falls. O n t, Canada DAVEY. Frederick K. (B) Carborundum Co. N iagara Falls. N. Y. DAVIDSON. Robert W. (R) N orth American Refractories Co. Curwensville, Pa. R oster 23 )A V iES. Chester A. ('.VI) Park Lake Ave., Titusville, N. J. (American Radiator 4 Standard Sanitary Carp.) )AVIES, Edward G. (G) Dominion Glass Co . Ltd. Wallaceburg, Ont., Canada ) 'IS, Thomas H. (G) Jllon Institute. 4i00 Fifth Ave. Pittsburgh 13, Pa. IAVIS. Earl K. (G) Bausch 3c Lomb Optical Co. Rochester, X. Y. 'AVIS FIR E 3 RICK CO. Oak Hill. Ohio AVIS, Harry E. (W FI) 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. (C orning Glass W orks' AVIS. John A.. Sr. (W ) . Sentry Sanitary Corp. Box 427. M annington, \V. Va. AVIS. X. 3. (Mi 77 Metcalfe St.. Rm. 305 Ottawa 4. Ont., Canada (Canadian Flint 4 Spar Dept.) AVIS, Sam H.. Jr. (\V) 808 X. Howard, Robinson, III. (Case Mfg. Corp.) AVIS, William A. (G) 1421 Second St. M. R.. Tarentum, Pa. (Pittsburgh Plate Glass Co.) AY. Arthur L. (Honorary, G) 9113 Old Georgetown Rd. Bethesda 14, Md. AY. Britton T. (R) American Fire Clay 4 Products Co. 3 o x 15". Canrieid. Ohio AY. Char:es M. , R.) 'ley Dolomite Corp. in 902. 315 Olive St. __Louis I. Mo. VY, Deibert E. 1003 Park St.. Roiia. Mo. \Y . Frank. Jr. (M) Coming Glass Works. Coming, X. Y. \Y . Jack F. W i) United States Ceramic Tile Co. Fourth 4 W alnut X. E.. Canton. Ohio \Y . Loren L. (GJ) 240! X. Mesa. Aot. 4. E! Paso. Texas ( Pittsburgh Plate Glass Co.) VY. Ralph K. IG FI) l.ihhey-Owens-Ford Glass Co. 1701 E. 3 roadway, Toledo 5, Ohio VY. Robert 3. (SI) 18 Lynnwood Dr., R. R. 3, Morris. III. (M orris Clay Products Co.) iADERICK. James W. (B) 1011 Xorvell Dr. Signal Mountain, Ter.n. (American Lava Corp.) LADWYLER. Earnest W. (RI) 2599 Glenmawr Ave. Columbus 2. Ohio ( United States Army) L \X . Estus R. (BJ) 1416 Tabor Ave.. Dayton 10, Ohio ( Xationai Cash Register Co.) iA R . Taui S. (B FI) Virginia Polytechnic Institute Uox 205, Blacksburg, Va. - RECK, Hubert O. (M ) 5105 Belmont. Apt. 3. Houston 5, Texas (Baroid Div.. National Lead Co.) iBENHAM. W. S. (R FI) T"-'ted States Steel Corp. William Penn PI. . iburgh 30, Pa. :CKER. Alfred R. (W ) 811 X. Seventh St.. Cambridge. Ohio (Champion Spark Plug Co.) >L. .V), NO. 10 (1 Oof)) DECKER. Edgar A. (M) G. S. Robins 4 Co. 126 Chouteau, St. Louis 2, Mo. DECKER. Edward L. W'<\> Summer St., W illiamstown, Mass. (Sprague Electric Corp.) DE COURSEY. Donald T. (E) 57 Prospect Park South West Brooklvn 15, X. Y. DEETH. H. R. (Ml American Xcpheiine Ltd. 25 King St. \V.. Rm. 2330 Toronto, Ont., Canada de FELICE, Ralph (D; 28 Shore Cliff PI. Great Xeck, L. I., X. Y. (Abels, W asserberg & Co.) DE1GXAN. Charles J. (SI) 305 Burkey Ave.. Reynoldsburg, Ohio (Claycraft Co.) DEIRO. John H. (E) Xorris-Thermador Corp. 5215 Boyle Ave., Los Angeles, Calif. DE LA ROY. Hans (W.l Delco Radio Div. General Motors Corp. Kokomo. Ind. DELAWARE CLAY CO. (Homer \V. Wilson I Box 352 Delaware. Ohio de LEEUW, Peter Etsenberg 4 Co.. Inc. Central Post Office Box 323 Tokyo. Japan DELGADO. Cyril B. (G) Tltr Class Iu<lstr\ 55 W. 42nd St.. New York 36, X. Y. DeLONG. Hermon W ,, III (G) 67 Main St.. Dar.sville. X. Y. (Department of Public Works) DEM.AISOX. R. J. (R) Quigley Co.. Inc.. 415 Madison Arc. New York 17, X. Y. DeMARIA. Vincent C. (Gi S.ivania Electric Procucts. Inc. Box 6. Bayside. X. Y. DEMUTH GLASS WORKS. INC. (George F. Young) Box 629 Parkersburg, W. Va. DENISON EN G IN EER IN G CO.. TH E (W. C. Denison! 1160 Dublin Rd. Columbus lb. Ohio DENISON. George W. (SF) Ohio Clay Co.. Box 1776 Cleveland 5. Ohio DENISON. John C . Jr. (G) John C. Denison 4 Son Co.. 3ox 63 Rochester. Pa. DENISON. Norman E. (S) Ohio Clay Co.. Box 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 4 Tile Co.. Inc. Box 53. Great Bend, Kans. de PABLO. Liberto Ohio State University Lord Hall. Rm. 113 Columbus 10. Ohio Dk PIOLENC. Gerard (X) Saint Gohain. Inc. 500 Fifth Ave.. New York 36, N. Y. dePROSSE. Victor 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 Pittshnrgh 13, Pa. DERIN'GER. W. A. fE 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.. Inc.) DERR. Robert H. (W) Certain-Teed Products Corp. 204 Park Pittsburgh 9, Pa. UcrSARKISSlAN, Michael Gaspcrt. X. Y. DESAIX, Herben A. (S i) 122 Jefferson Park Dr. Huntington, W. Va. ( Barboursviile Clay Mfg. Co.) DESENXE. Claude M. (S) Cote de l'Eglise Boiscbatel. Co. Montmorency, Que., Canada (Citadel 3rick Ltd.) DESMARQUEST. Louis Institut de Cramique Franaise 6 Grande-Rue Sevres (S. 4 O.), France DETAMORE, Walter A. (S) Barium Reduction Corp. South Charleston 3, W . Va. DEURVORST. F. B. M. Het Zonnehuis, Terborg, Holland (Konmklijke Fabrieken Diepenbrock 4 Reigers X. V.) DEUTSCHE GLASTECHNISCHE GESELLSCHAFT Untennainkai 12 Frankfurt A. M., Germanv DEUTSCHE KERAMISCHE GESELLSCHAFT Reuterstrasse 235 Bonn/Rhein. Germany DEUTSCHER. Jerome S. (SI) R.R. 1, Box 938. 4199 Temescal Ave. Norco. Calif. (Maybow, Inc.) DeVILBISS CO. (E. F. Frey) Toledo 1. Ohio de VILLE. Ralph W. (I) Harvard University Graduate School of Business Soldiers Field, Boston 63, Mass. DEVLIN. James F. (E JI) 1523 E. 33rd St., Baltimore 18. Md. tPetnco Corp.) DeVOE. Charles F. (G) 38 W. Fourth St., Corning. X. Y. (Coming Glass Works) DeVRIES. Robert C. (3 ) 2012 Hudson Sr., Schenectady, X*. Y. (Gnrai Electric Co.) DEW. Robert J.. Jr. (3 ) Ceram-Chem. Research Lah. University of Tampa, Tam pa. Fla. DEWEY. 3. F. (W) 42 Summit St., LeRoy, N. Y. (Lapp Insuiator Co.) DEWEY. John L. (R) Reynolds Metals Co. Box 191. Sheffield. Ala. de WYS. 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, III. (United States Steel Corp.) DIAMOND ALKALI CO. (L. T. Welshans) Cement-Coke Div. 300 Union Commerce Bldg. Gcveiand 14, Ohio DIAMOND, Grant S. (R F I) Electro Refractories 4 Abrasives Coro. 344 Delaware Ave., Buffalo 2, N. Y. DIAMOND, Jacob J. (B) National Bureau of Standards Conn. Ave. 4 Van Ness St., N. W. Washington 25, D. C. DIAZ. Jose J. (I) Fabriea Nacional de Loza de Penco S. A. Box 13, Penco, Oiile 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 ;K . William O.. Jr. 37 Meadow Brook Apts. Corning, N. Y. CKAS, Charles H. (E ) 1524 Sunset Rd.. Chattanooga, Tenn. (Samuel Stamping it Enameling Co.) zy~ .ss, h . a . :n Porcelains (Aust.) Pry. Ltd. Separation St. isurthcote, Victoria, Australia CKEY, K erben R. tS ) 26 Regent S t._ St. Thomas, Ont.. Canada (Canada Vitrified Products. Ltd.) CKEY, John M.. Jr. (SI) H aniev Co., Summerville. Pa. ETERT. Harry W. (3) H arry \V. Dietere Co. 1214 Virginia Dr., Kerrviile, Texas ETRJCK, Waldemar F. (3) 1209 Potomac St.. X. W. W ashington 7, D. C. (U nited States 3ureau of Mines) ETTERLE, Edwin W. (WI) 3834 Monteith Dr. Los Angeles 43, Calif. . (Ferro Corp.) ETZ, Earl D. 583 Hess Rd., Coiumbus 10, Ohio ETZEL, Adolf Max-Planck-Institut fur Silikatforschung, Wurzburg, Germany Neunerplatz 2 LAZZARO. John F. 4015 34th S.. Seattle 8, Wash. LLARD. William F., Jr. (S ') 2125 E. Side Court, Augusta, Ga. (M erry Bros. Brick it Tile Co.) LLENDER. Richard D,, Jr. (W) 8 Sunnybrook Trail Signal Mountain, Tenn. (American Lava Corp.) 1LLIARD. Paul D. (GI) 1313 E. Wheeiing St.. Lancaster, Ohio (Anchor Kocx.ng Glass Corp.) :r TGHAM. Robert ?. (W) ; Cheyenne 5t.. Golden. Colo. , oors Porcelain Co.) 1LLON, C. L. (G) Latchford Marble Glass Co. Box 71707. Los Angeles 1, Calif. 1LLON, Bale (W 56 Riverlawn Dr., Fair Haven. X. J. (A tlantic Tile M:g. Co.) iNGLEDINE. H. F. IS) National Sewer Pipe Ltd. 330 Wentworth St., N. Hamilton. Ont.. Canada 1XGLER. Edward L., Jr. ( R) C arborundum Co., Refractories Div. N iagara Falls, N. Y. INGWALL. Andrew (G) 588 Grove St.. Upper Montclair, N. 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. (M id-W est Abrasive Co.) IRKSEN, A. J. (G) American Potash St Chemical Corp. 99 Park Ave., New York 16, N. Y. IRLAM . A rthur C. (G) 208 N. Talley Ave., Muncie. Ind. (Ball Bros. Co., Inc.) IST IL L A T O R . Philip R. (W ) Jackson Vitrified China Co. 2 West St., Pelham Manor 65, N. Y. ITH RIDG E. Edward H. (E) Richm ond R adiator Co.. Monaca, Pa. >IXON. Anna Lane (D) " 5 N. Fourth St.. Burlington, Iowa *' :, Gene (R ) . anite Mining Corp., Cullen. Va. )IX O N , JO S E P H . CRU CIBLE 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 DLUCOZIMA, W. R. (W I) R. R. 19, South View Dr. East Liverpool. Ohio (Patterson Foundry 5c 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 & M achine Works 221 Seventh Ave., Hawthorne, 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 -Richardson Mfg. Co.) DOMINION MINERALS DIV.. RIVERTON LIM E & 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, Germlston 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 DONNENW1RTH. 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) Syivania Electric Products. Inc. Cottage PL. Mineoia, N. Y. DORF, Arthur L. 331 W. College Ave., State College, ?a. DORN. A'.vah J. (G) 4 Oakwood Dr., Box 152 Corning, N. Y. (C om ing 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 Cortiandt St.. New York 7, N. Y. DOUGHERTY. Leon A. (W ) 370 North St., Sun Prairie, Wise. (Wisconsin Porcelain Co.) DOUGHERTY. Robert W .' (S) Lindberg 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 ShcSeld 10. England DOWLING. Robert r . (G) American Optical Co. Southbr-ldge, 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. DRAKENFELD. 3 . F. & CO. (Scott J. Courtney) 45--47 Park PI. New York 7, N. Y. DRAKER. Harry C. (M) 38600 Counland Dr., Willoughby, Ohio (Harshaw Chemical Co.) DRAMMENS GLASSVERX (Ragnar Tan'oerg) Drammen. Norway DRAPER, Perry E. (W ) Mansneid Sanitary Pottery, Inc. Perrysville. Ohio DRECHSEL. Helmut E. (G) Smith Kline & French Labs. 1530 Spring Garden St. Philadelnhia 1. Pa. DRESSLER. Philip (M FI) Swindell-Dressier Corp., Box 1888 Pittsburgh 30. Pa. DREYLING. Lewis J. (R) 229 Mltown Rd., Milltown, N. T. (Quigiey Co.. Inc.) DROUHARD. W. J. (W I) Mansfield Sanitary Pottery, Inc. Perrysville. Ohio DRUCKER. Julius Farbenfabriken Bayer Aktiengesellschaft, 7-9, Rheinuferstr. Krefeld-Uerdingen, Germany DRUMMOND. Charies H. (G) 1639 Cass Rd.. Maumee, Ohio (Owens-Illinois I DRUMMOND. '.V. W. C) 214 Crim St., Bowling Green, Ohio (Libbey-Owens-Ford Glass Co.) DUB ER. William Box 1318. Georgia Tech., Atlanta. Ga D U 3L SR . Robert H. (W) Crane-Pacinc Co. 330 W. Citrus St.. Colton. Calif. DuBOIS. H. B. (M FI) Golding-Keene Co. 1401 New Y'ork Ave., Trenton, N. J. DUCKWORTH. W inston ( 3 FI) Battelie Memorial Institute 505 King Ave., Coiumbus 1. Ohio DUDDING, 3. P. International Commission on Glass Research Laboratories General Electric Co., Ltd. Wembley, Middlesex, England DUE. Herbert J. (W) 11 Scoies Ave.. Clifton, N. J. (St. Joseph Lead Co.) . _ - - DUECXER. Heyman C. (G) 28927 Emerson Way, Inkster. Mich. (Ford M otor Co.) DUEVEL. Charies O.. Jr. (G) American Thermos Products Co. Thermos Ave.. Norwich. Conn. DUEY. Robert K. (S) Southern Lightweight Aggregate Corp. Box 9138, Richmond 27. Va. DUFF, R. D. (G) Owens-Illinois Box 1035. Toledo 1. Ohio DUFFY. J. P. (S) Stillwater C ay Products Co. Lock Drawer 32, Uhrichsville. Ohio DU FRESNE. Roben S. (R) 3125 Fairmount, La Crescenta. Calif. (Gladding, McBean Sc Co.) DUGAN. Robert T. Box 1844, Midland, Texas R oster 27 ) CG GAN. J. J. (G) Walsh Refractories Corp. 101 Ferrv St., St. Louis 7, Mo. >UHRS3EN\ Alfred (D> Commercial Decal. Ir.c. 3ox 7:9. East Liverpool. Ohio H '" " 7, John J. CW) it 33. Saxonburg, Pa. Ju-Co Ceramics Co.) lULBERG, Irving (R) 2S4 N. Allegheny St., Beilefonte, Pa. (J. H. France Refractories Co.) JL'LIX, Francis H. 7728 Westmoreland Dr., Sarasota, Fia. /U X3ECX, Norman J. (R) International Minerais 4 Chemical Corp. 20 N. Wacker Dr.. Chicago 6, 111. )UXCAX, J. Earle (G) Pittsburgh Plate Glass Co. Research Lab., Creighton, Pa. )UXCAX. Russell F. (B) 209 Franklin Dr., Berea, Ohio (Ferro Corp.) iCN CO M BE, George H., Jr. (S F ) _ ISO E. Frambes Ave., Columbus 1, Ohio (Evans 3 rick Co.) UXG.AN R obert H. (B I) 6850 Meadowbrook Manor St. Louis Park. Minn. ( M inneapolis-H cneywell Reg. Co.) 'C N N . H. E. (M ) Suite 206, 500 Mt. Lebanon Blvd. Pittsburgh 34, Pa. (Vanadium Corp. of America) U NN . John P. (G) _ C orning Glass W orks, Corning. N. Y. >UNX. Peter E. (G) Rauiand Corp., 4245 N. Knox Ave. Chicago 41, III. lU N N IC A N . Ward G. (G) 277 E. Seventh St., Clifton. N. J. (Bector.. Dickinson 4 Co.) iU P L IN . V. J.. Jr. i3FI> 0 North Ave.. Fanwood, N. J. hbcock 4 Wilcox Co.) u . J N T , E. I.. de NEM OURS 4 CO.. IN C . (John M. Olsen) Electrcchemicais Dept. Wilmington 98, Dei. 'U R7K42A MW.indCsaorri T. (E ) Ave.. S. W. Roanoke. Va. (G enerai E lectric Co.) >L"RST. W illiam A. (M) 209 Madison St., St. Marys, Pa. (Stackpole Carbon Co.) >UWEZ, Poi (3) California Inst, of Technology Pasadena, Calif. )YXES. Marvin W. (G) Van Dyne Quarta Works Box 148. St. Charles, III. >YRE, W arren T. (E) 317 Estaugh Ave.. Haddotiteld. X. J. ( Universal-Rundle Corp.) )ZURA. Edward J. (B) A m erican O ptical Co. Research Center S outhbridge. Mass. E AGLE. J. Eugene (MFI) 3202 McShane Way, Baltimore 22, Md. (Peraco Corp.) AGLE-PICHER CO. (D. R. Orter) American Bldg., Cincinnati 1, Ohio ARHART. William H. (G) RCA Victor. Engineering Dept. S. Adams St.. Marion, Ind. t f ~ ' , Fred C. x 84. 3roadaibin, X. Y. v. - , J. Alfred (B) 1621 S. El Molino St. A lham bra. Calif. (Consolidated Electrodynamics Corp.) /O L . .T>, N o . 10 (lO fi EASTER, George J. (R F i) Electro Refractories 4 Abrasives Corp, Willett Rd,, Buffalo 19. X. Y. EBERSOLE. Robert A. (R) Chisholm. Boyd 4 White Co. 610 W. 57th St.. Chicago 21. 111. ECKEL. Albert R. t.Ri Commercialores. Inc., Clover, S. C. ECKEL, Harold A. Trinidad Clay Products. Ltd. 44, South Quay, Port of Spain Trinidad. B. W. I. ECKLEY, J. R. (R) Aluminum Co. of America 1501 Alcoa 31dg., 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 3Idg. Pittsburgh 22. Pa. EDGAR PLASTIC KAOLIN CO. (Albert C. Edgar) Edgar. Fla. EDLIX. Vernon (B) 6712 Chappel Ave.. Chicago 49, 111. (Armour Research Foundation) EDWARDS. F. M. (W) 4605 Crosby Rd.. Knoxville. Tenn. (Knox Porcelain Corp.) EDWARDS. J. B. (S) Reliance Clay Products, Box 13226 Dallas 20. Texas EGERTON. Lawson (B) Bell Telephone Labs.. Inc. Murrav Hill. X. J. F.HLERS. Ernest G. (B) Ohio State University Dept, of Mineralogy. Columbus, Ohio EHLERS. G. Milton (W ) Aerovox Corp.. 742 3ellevil!e Ave. New Bedford. Mass. EHMAX. Roy G. (G FI) 323 E. Hamilton Ave. State College. Pa. (Pennsylvania State University) EHRLICH. Raphael H. (S) 4039 N. Central Expressway Dallas 4. Texas (Crown Brie:: Mfg. Co.) F.ICHBAUM. Barlane R. E. Bend Park. 8 May Court Red Oaks Mill. Poughkeepsie. N. Y. HIDE. Alwin C. (E ) __ American Zinc Sales Co.. Box 327 Columbus 16. Ohio EISEX. John B. (R) Box 27. Waterloo. Wise. (Rar-O-Vac Co.) EISENBERG. Marvin (F.) Montaine Corp. 2446 S. Prairie Ave.. Chicago 16. Til. EISENBERG. Meyer (W) 64 Chester Circle New Brunswick. N. J. ( Architectural Tiling 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 Manvilie. N. J. EKEDAHL. J. Charles fR ) 1113 X. Raynor Ave.. Joliet. 111. (Illinois Clay Products Co.) ELDER. J. C. (W I) Robertson Mfg. Co.. Box 848 Trenton 5, X. J. ELECTRIC AUTO-LITE CO.. SPARK PLUG DIV. (Robert Twells) Box 231, Fostoria. Ohio ELECTRO REFRACTORIES & ABRASIVES CORP. (Grant S. Diamond) 344 Delaware Ave.. Buffalo 2. X. Y. E LJER CO.. Enamel-Ware Div. (L. A. Bateman) Salem, Ohio ELLARD. Earle R. (R I) 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. A.mos W. (B) Covered Wagon Ranch Cloverdale. Caiif. ELLIO TT, C. Franklin 3301 Pinewood Ave., Apt 41 Chattanooga, Tenn. ELLIOTT. George 5 Hillpark Gardens Edinburgh 4, Scotland (N ational Coal Board) ELLISON. Henry W. (G) 169 E. Third St.. Coming, N. Y. (Corning Glass Works) ELLISON. R. W. (R ) 1551 E. Loma Alta Dr. Altacena. Calif. (Gladding, Mc3ean 4 Co.) ELMER. Jack T. (X) 1S''0 Woodland Ave. Santa Clara. Caiif. ELMER. Thomas H. (B) 219 E. High St., Painted Post. N. Y. (Corning Glas Works) ELOSUA. Bernardo (W) Ladrillera Monterrey, S. A. Box 360, Monterrey, N. L., Mexico ELSTON\ Keith (W I) 117 Somerset Ave.. Pittsfield, 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 4 Development Center Lancaster. Pa. EM HART MANUFACTURING CO. (W. H. Shorter) 533 Homestead Ave. H anford 2. Conn. EMHISER. Donald (R) 1105 Eighth Ave.. Brackenridge, Pa. (Pittsburgh Plate Glass Co.) EMISDN. M. Hershel (G) Corning Glass Works Charleroi Div., Charieroi. ?a. EM LEY. William S. (W) W. Maitland Lane. R. R. 3 New Castle. Pa. (Shenango China. Inc.) EM M ERICH. L iberata (G) Pennsylvania State University Mineral Industries Library University Park. Pa. EMRICH. Allen H. 1799 Franklin Ave.. Columbus 5, Ohio EM RICH. Barry R. (R JI) . . 301 Quincy N. E.. Apt. E ~ Albuquerque. N. M. (Kaiser Aluminum 4 Chemical Corp.) EMRICH. Emerson W. (MI) R. T. Vanderbilt Laboratories East Norwalk. Conn. EMRICH. Harold W. (SI) 1560 S. Krameria. Denver, Colo. ( Denver Brick ic Pipe Co.) EXBERG. Christer Tegellahoratoriet (Brick Laboratory) Drottning Kristinas vag 4S Stockholm 0 . Sweden EXGLERT. William J. (G) 304 Vernon St.. New Kensington, Pa. (Pittsburgh Plate Glass Co.) ENGLISH CHINA CLAYS SALES CORP. SSI Fifth Ave.. New York 17, X. Y. EXHUS. Hans Gosta Aktieboiaget Malardalens Tegclbruk Ericsbergsgatan 27 Stockholm 3, Sweden R oster 29 ENLOE, Scrooj) \V. i.Mi Dilliboro, X. C. (Harris Gay C oj EXLOE. Scroop W., Jr. (M) H arris C;av Co.. Spruce Pine. X. C. EXOCH. Charles R. f R 3-0 Spring Ln., Bridgeport, Pa. (R efractory Specialty Co.) !XOS. 'V- Kenneth 607 Rntled?e Ave.. Charleston. S. C. EPSTEIN . Edward. Jr. (R) Laclede-Christy Co Div. H ."X. Porter Co. 4705 Ridgewood Ave., St. Louis, Mo. ERARD, Edward (G) Vtdrio Xeutro, S. A. Prolongacion Calle de la Rosa No. 9, Atzcapotzaico, D. F.t Mexico ERICKSON. A. Alfred (G) 84 Pershing St., Corning. N. Y. (Coming Glass Works) ERICKSOX, Allen J. iG) 4239 E. "4ih St.. Seattle 15, Wash. (Northwestern Gia5S Co.) ER IE RESISTOR CORP. ( Bobby L. Joytu r) 644 W. 13th St.. Erie. Pa. ERNST. Walter S. (Ml 2723 E. Fifth Ave., Knoxville. Term. (Volunteer Portland Cement Co.) E RSLEY , Em m ett J. (GJ) R. R. 1. Box 352-B 24585 W aytr.an St., Xewhall. Calif. (Thatcher Glass Mfg. Co.) ERVIN, Guy, Jr. (B ) Research Laboratory, Norton Co Worcester, Mass. ER W IN . Lee R. <G> 419 Tocino. D uarte. Calif. (Carrier Corp.) ERZEN. Frank C. (E ) 731 S Greenbcrry Dr. West Covina. Calif. (Bulwark Coro, of America) ESCKENSVRG. Robert 1.. II F!oreviJle. Texas SSELSTYX. W illard A. c/o American Embassy New Delhi ('Mail Room) Department of State Washington 25, D. C. ESTES. Joseph r (\V Haeger pjttcries. Inc. * Maiden Lane. Dundee. 111. E TH E SE D G E . Otis X. (M) Box 252. Gordon, Ga. (Southern Clays. Inc.) ETRIS. Samuei F. (R) 100 \V. N ippon 5:. Philadelphia 19, Pa. (American Society for Testing Materials) EUBA NK . William R. (3 ) 2301 H udson Rd,, St. Paul 6, Minn. (M innesota M ining Sc Mfg. Co.) EUBANKS. Alfred G. (E) 10802 Stella Court. Kensington. Md. (National Bureau of Standards) EUSN ER. George R. (R) 102S Summitt St.. McKeesport, Pa. (United States Steel Corp.) EVANS. Charles E. (M) 2401 N orthglen Dr. Colum bus 24, Ohio (T itanium Alloy Mfg, Div. National Lead Co.) EVANS. Daniel Owen (G) Hillcrest & Linden Ave., Mapleview Charleroi. Pa. (Corning Glass Works) EVANS. Edward J. . Welsh Tinplate 8c ' M etal Stam ping Co. Ltd.. Box 14 Llanelly, Carmarthenshire. England fA N S LEAD CORP. (Fred Leake. Jr.) Box 1467. Charleston 25. W. Va. EVANS P IP E CO. (T. J. Evans, III) Uhrichsville, Ohio Vol. 35. No. 10 (1056) EVANS. Ricnard F. tW ) Iroquois China Co. 2320 Milton .Ave.. Svracuse 9, N. Y. EVANS. Ross M. (S) 604 E. Mechanic St.. Brazil. Ind. (Arketex Ceramic Corp.) EVANS. T. Ill (S.I Evans Pipe Co.. Uiirichsviile. Ohio EVANS, W. Gordon Geo. L, Ashworth St 3ros. Ltd. Broad Street Works Hanley, Stoke-on-Trent, Engiand EVANS. William W. (S I) 506 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, Menvin R. (M) Box 19A, R. R. 1. Monclova. Ohio (Surface Combustion Corp.) EWING, Robert F. (W I) Mansfield Sanitary Pottery Perrysviile, Ohio . EXOLON CO. (Harvey J. Robillard) 1000 E. Niagara St.. Tonawanda, N. Y. EYERLY. George B. (S) Malvern Brick Sc 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 Ridge-wood Ave. St. Louis 16. Mo. FABRICA de LA D R ILLO S INDUSTRIALES, y REFRACTARIOS, S. A. (Salvador Odriozola Gomez) Apartado 390. Monterrey. N. L., Mexico FABRICA de PORCELANA da VISTA ALEGRE. LDA. Gabinete a Lab. Central de Estudos Candal. Vila Nova de Gaia. Portugal FACKLER. Ernst G. Apartado Aereo 6108 Bogota. Colombia (Vidrio S. A.) FACKT. George P. ^SF) 408 Pasco rie: Mar. Box 378 Palos Verdes Estates. Calif. (Redondo Tile Co.. Ltd.) FADANELLI. Louis H. 1132 S. California Ave.. Chicago. III. FAGG. Leo W. (E) Johnson-Fagg Engineering Co. Box 7157. Tulsa. Okla. FAHRENBRUCK. William O. (R I) R.R. 1. Box 95. Tiffin. Ohio (Sterling Grinding Wheel Co.) FA1LMEZGER. Howard (W F I) Victor Insulators Div., I-T-E Circuit Breaker Co. Maple Ave.. Victor, N. Y. FAIN. Charles C. 789 Glendalyn Ave.. Spartanburg, S. C. FAIRFACTS CO.. (J. Ryan Sm ith) Fairfacts St., Trenton 8. 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 PL. 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) FARKAS, Howard (M) United States Stoneware Co. 60 S. 42nd St.. New York 17, X. Y. FARN ELL. James H. (W) Louthan Manufacturing Co. East Liverpool, Ohio FARR. Archie . (El O. Homme: Co.. 3ox 47; Pittsburgh 30, Pa. F A R R O W , Lewi s C. ( E) R. R. 1. Clyde, Ohio (W hirlpool Seeger Corp.) FASOLD. G. A. (E) 7329 3errard Ave.. Cincinnati 31. Ohio (Philip Carey Mfg. Co.) FAUCHON-3AUDOT, J. B. Ets. Fauchon-Baudot 31. Ave. de Tourville. Paris 7, France FAULKNER. Karl B. (G) 179 Victory Hwy., R.R. 2 Painted Post. X. Y. FAUST. Ernest H.. Jr. (RI) 58 Klarman Dr., Mt. Carmel. Conn. (American Reiractories 3: Crucible Corp.) FAUST, George T. (B) 9907 Capitol View Ave. Silver Spring. Md. (U. S. Geological Survey) FAY. Wayne X. (RI) 707 Knox Rd., Villanova. Pa. (General Refractories Co.) FEAGIN, R. C. (BI) Austenal. Inc. 224 E. 39th St.. New York 16. N. Y. FEASTER. Richard V. 560S University Way, Apt. 5 Seattle 5, Wash. FEDERAL GLASS CO. (Henry H. Blau) 515 E. Tunis Ave. Columbus 7. Ohio FEDERAL SEABOARD TERRA COTTA CORP. (O. E. Mathiasen) Box 301. Perth Amboy, N. J. FEDOCK. Michael ? . \'.i) 4214 Ashwood Dr., N. W. Canton 3. Ohio (Republic Steel Corp ) FEIG ELSO X. Robert 5. _ 720 Techwood Dr.. Atlanta, Ga. FEIN BLO OM . David T. 3459 Park Ave . W an'agh. L. 1.. X Y. FELD. Phiiip c/o Borenstein 137-09 70th Rd.. Flushing, N. Y. FELDMAN. Gail H. ( GJ) 43 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 F I) 748 N. Kensington Ave., La Grange. 111. (Century Vitreous Enameling Co.) FELS. C. G. (R I) ... - - 11 DeForrest Ave. N orth Plainfield. 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. FENSTERMACHER. John E. (RJ) 302 Cherry, Clearfield. Pa. ( H arbison-W alker Refractories Co.) FENTON. Walter M. (E) Lithium Corp. of America. Inc. 2560 Rand Tower, Minneapolis 2, Minn. FENTZKE. A. Daniel (R) 840 Hickman Rd.. Augusta, Ga. (Babcock Sc Wilcox Co.) Roster 31 FERGUSON, Donald Box 929, Alfred. N. Y. FERGUSON'. Dougias J. (D ) Pigeon Forge Pottery Pigeon Forge, Tenn. FERGUSON. D. Robert, III (R ) 01 Vine St., East Liverpool, Ohio (Crescent Brick Co.. Inc.) itGUSON, Robert F. (G) 1765 Caieb Dr.. Zanesville, Ohio I Hazel-Atlas Glaus Co.) FERGUSON, Robert L. (S) Yankee Hill Brick Mfg. Co. 72S Stuart Bldg., Lincoln S, Nebr. FERON, Marcel Adtninistrateur-delegue Societe Beige de Ceramique "Cerabel" Rue d'Herchies, Baudour, Belgium FERREIRA. Laurence E. (B) W illoughby Arms, Apt. 2-C Golden. Colo. (Coors Porcelain Co.) FERRES. Daniel Viiiplan S. A.. Real No. -415 Montevideo. Cruguav FERRIS BRICK CO. (R. T. Wilson) Box 188, Ferris. Texas FERRIS. Harry Philip (M) 20 Birch Dr.. Levittown, Pa. (Simonds Abrasive Co.) FERRIS. James E. tG) Hooker Electrochemical Co. Niagara Fall. N. Y. FERRO CO RF. (R . A. Weaver) 4150 E. 56th St.. Cleveland 5, Ohio FERRO ENGINEERING CO. (Benjamin F. Anthony) 1400 Hanna Bldg., Cleveland 15, Ohio FESLER. Ray T. (W ) A.A.A. Corp.. 3ox SIS, Gadsden, Ala. l'E SSL ER . A. H. I'.VFI) 423 5. Edgetvood. Lom bard. Ill, IA C Spark Plug Div., General Motors Corp.) FETTER. H. :R ) Cia. Mexicana de Refractarios 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 12C5 17th Ave.. Columbus 11. Ohio (George renter Ceramic Supplies) FEYLING. C.aus A. Eie Stentoitabrik Egersund. Norway FIBERGLAS CANADA. LTD. (John MacRae) Box 309 Gueiph, Ont.. Canada F IE D L E R . W illiam S. (G) Bjorksten Research Labs.. Inc. Box 265, M adison 1. Wise. FIELD. Theodore E. (B) Corbart Refractories Co. 1600 W. Lee St.. Louisville 10, Ky. FIELDS. Ernest. Jr. (SI 2J15 Elm St.. Owensboro. Ky. (O w ensboro Sewer Pipe Co.) FILES. John A. (E ) Radio Corp. of America Tube Division 3301 Adams. M arion, Ind. FI LI PPL Hugo (S r) Illinois Brick Co., Room 2240 223 X. LaSalle St., Chicago I. 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.) iN LAY SEN, John R. School of Ceramics Rutgers University New Brunswick. X. J. Vol. 35, No. 10 (li)ot5) FINNEY, Edwjn L. tS i Clavcrat't Co.. Shawnee, Ohio FIRESTINE. Arthur G. (G) 34 Dewey Ave., Fairport. X. Y. (Bausch & Lomb Optical Co.) FISCHER. Eugene A. (P.) 108 Newton Ave., N. Worcester 9, Mass. ( Norton Co. i FISCHER. Peter R. i.J) Goethestr. 34 Wuelfrath/ Rhld.. Germans FISCHER, Robert J. t.W) IS Fairway Ave. West Long Branch, X. J. (Signal Corps Engineering Labs.) FISH. E. Thomas (R JI) Great Lakes Carbon Corp. 58th St. & Pine Ave. Niagara Fails. N. Y. FISH EL. Waite P. (B) R. R. 2. Pleasant City, Ohio FISHER. Eugene A. (W ) Electric Auto-Lite Co. Spark Plug Div.. Fostoria, Ohio FISHER. Henry C. IR) Norton Co.. 1 New Bond St. Worcester 6. Mass. FISHER. Joseph R. (W ) Bell Telephone Labs.. Rm. 1A-341 Murray Hiil. X. J. FISH ER. Richard G. 17 Weils St. Horned. X. Y. FISHER. William V. (G) Anchor Hocking Glass Corp. Lancaster. Ohio F I S H KI N. Henry W. ( W) 233 Mantua St.. Park Forest. III. ( Ferro Corp.) FISHLEY, William S. (W ) Sparta Ceramic Co. East Sparta. Ohio FISH-SCHURMAN CORP. (Murray Yawitz) 70 Portman R<1. New Rochelle, X. Y. FITZGERALD, Alex E. <RI) A-4 Avon Apts.. N'arberth. Pa. (General Refractories Co.) FITZGERALD. J. Vincent (W) Tile Council of Am. Research Center School of Ceramics. Rutgers University New Brunswick. X. J. FITZPATRICK. William D. i R i 909 Vermont A\c.. Ant. 2 Pittsburgh .14. Pa. ( Harbison-W aiker Refractories Co.) FITZSIMMONS. Elmer S. , RD Chem. & Abraives Research Dept. Cincinnati Milling Machine Co. Cincinnati 9. Ohio FITZSIMMONS. Koiiert F. (W) R. R. I. Oakfieid. X. Y. (Lapp Insulator Co.. Inc.) FIX . Frank A. (Xl Posey Iron Works. Inc. Lancaster. Pa. FIX . William G. (M) Carborundum Co., (b'oliar Div. 333S W. 47th St.. Chicago 32. 111. FLEISCHER. Arthur (B) Nickel Cadmium Battery Corp. Box 349. Easthampton. Mass. FLEMING, A. P. M. Metropolian Vickers Electrical Co., Ltd. Trafford Park. Manchester 17. England FLEM ING, Charles A. (F.I) 3613 General Bates Ur. Nashville 4. Tenn. ( Pemco Corp. I FLEMING. David M. (SJ) 322 E. Irwin Ave.. State College. Pa. (Glen-Gery Shale Brick Corp.) FLEM ING. Raymond C.. Jr. (M) 3113 Henderson Cr. W. Lakeland. Fla. (International Minerals & Chemical Corp.) FLEMING. Thomas T. (R) Frank Samuel it Co . Inc. 2200 Lir.coin-Liberty Bldg. Philadelphia 7, Pa. FLEXON. John D. iR> 344Q Gallatin RJ.. Toledo. Ohio (Owens-Illinois) FLICK. Fulton B. <R; Brown. Cf.tohlcw. Flick i Peckhair. 1706 First National Bank 3idg Pittsburgh 22. Pa. FLIN T. E. ?. .31 A rthur D. Littie. Ir.c. 30 Memorial Dr., Cambridge 42. Mass. FL IN T. Francis C. (G FI) Hazel-Atlas Glass Co. 15th & Jacobs Sts., Wheeling. W. Va. FLORENCE. Jack M. (G) Kimble Glass Co. Box 1035-1036. Toledo 1. Ohio FLORIDA T IL E INDUSTRIES. INC. (James W. Sikes) 60S Prospect St. Box 451, Lakeiand, Fla. FLOYD. W illiam A. Box 4360. State College Sta. Raleigh, X. C. FLU, Eldon 3ruce (W) 1533 Crooks Rd., Royal Oak, Mich. (Ceramic Div. Champion Spark Plug Co). FLYXX, Paul H. _(B) Internationa! Nickel Co., tic. Bayonne Works. Bayonne. N. J. FOGEL3ERG. Sven Webb's Crystal Glass Co.. Ltd. Dennis Glassworks Stourbridge. England FOLKERS. Charles L. (RJ) 917 Park Ave., Ack'iey. Iowa FONTANA. Eugene H. (G) Box 239. Corning. N. Y. (Corning Glass W orks) FONVJELLE. Frank ?.. Jr. (W I) De-.:i: Supply Co. of New York 500 W. College Ave.. York. Pa. FO O TS M INERAL CO. .'L. G. Bli-s I IS W. dielten Ave. Philaiieipr.ia 44. ?a. FORAKER. Robert W. (E ll Titanium pigment Corp. 99 Hudson St.. New York 13. N. Y. FO R3ES. Charie.- C. ,'G) Allen 3. Du Mont Lahs. 730 31oomne:d A v e. Clifton. N. J. FORBES. Lewis J-3. (G) Pilkington 3ros. (Canada) Ltd. 165 Bloor 5:., E. Toronto 5. Ont-, Canada FORD. Fred J. IS) 3ox 395. San Francisco. Calif. (Consultant) FORD. George D. (W I) 2136 Wilmer St., Zanesville. Ohio (Mosaic Tile Co.) FORD. W alter D. (G I) .. . - Pittsburgh Coming Corp. Research & Development Div Port Allegany. Pa. FORD. W illiam D. (E ) 1704 W. 54th St.. La Grange. 111. (Sears Roebuck 4 Co.) FORDS PORCELAIN WORKS (I. A. Hansen) Perth Amboy, N. J. FORESMAN, Grover C. (G) 212 Cedar St., Coming, N. Y. (Coming Glass W orks) FORJAZ. Xicolau I'orto F erreira, C. P. Sao Paulo. 3razil FORKNER. Henry R. (XI) 201 Fairview Ave.. Blacksburg, Va. (Virginia Polytechnic Institute) FORLAND. Torrood (U) Pennsylvania State University Dept, of Ceramic Technology University Park, Pa. Roster W FORM AN, Sydney A. (B) Dept. o( Agriculture, Chemistry Div. Science Service Ottawa. Ont., Canada FO RN IA . Robert F. (E J) 2326 N. iOih St.. Seattle. Wash. (United States Air Force) r ORTH. Robert D. (E) i 13o9 N. W. Circle Dr. Kankakee. III. (rlorer.ee Stove Co.) FOSDICK, Marion L. (D F) 100 N. .Main St.. Alfred. N. Y. FOSTER-FORBES GLASS CO. (F. R. Motscb) Marion, Ind. FOSTER. H. B. (S) Brick 3t Tile Service. Inc. Box 2933, Greensboro, X. C. FOSTER, L uther M. (B) Aluminum Co. of America Alcoa Research Labs. Box 772, New K ensington, Pa. FOSTER. WBder D. (B) 3403 Bower Ave., Verona, Pa. (U. S. Bureau of Mines) FOSTER, W ilfrid R. (B F) Department of Mineralogy Ohio State University Columbus 10. Ohio FO STORIA GLASS CO. (Roy G. Yeater) Moundsville, W. Va. FOUR ATT. Robert F. (R) 113 Willow Dr.. Little Silver, N. J. (Carborundum Co.) FOX. Charles S. (R ) Aluminum Co. of America 3613 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) 23S3 Banning Rd., Akron 13, Ohio (U S. Stoneware Co.) FRAME. Dudley ?., Jr. (M I) 2366 Club Rd.. Columbus 21, Ohio (Harrop Ceramic Service Co.) FRANCE. J. H.. R EFR A CTO RIES CO. (William A. France) Snow Shoe, Pa. FRANCE. William A. (R) J. H. France Refractories Co. Snow Shoe. Pa. FRA N CSSCH tN I. Feiippe J. V. de A. Ceramica Sao Caetano Caixa Festal 273, Sao Paulo, Brazil FRAXC1S. Ronald K. (I) Box 347. Alfred. X. Y. FRANCISCO. Allen C. (R I) Brook Lane, R.R. 1 Chesterland, Ohio (Kolcast Industries. Inc.) FRANCK. Leon Ets. Franck Sc Steeman. S. A. 20, Avenue Emmanuel Haren-Xord/Brusseis. 3elgium FRAXCL. Josef (B) 1302 Perth St., Toledo 7, Ohio (O w ens-Illinois) FRANK, Arthur W. (R) 2284 Auer Park Pewaukee Lake. Pewaukee, Wise. (H evi-D uty Electric Co.) FRANK. 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. (G I) 918 Grassmere Ave.. Waaamassa, 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. N. J. FRANTZ. S. G.. CO.. INC. (Samuel G. Fran::) Box 1133 Trenton o, X. J. FRANZ, Leo J. (St Acme Brick Co., Malvern. Ark. FRASER. Lewis H. D. <BI) Dan-Mar Apt. 106, Marion, Ind. (RCA Tube Division) FRASER. Orray T. (G I) 574 E. Mithoff St.. Columbus 6, Ohio (B. F. Drakenfeid & Co.. Inc.) FRASER. Walter A. (G ) 1320 E. 56th St., Chicago 37, 111. (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) 52 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) Libbcy-Owens-Ford Glass Co. Rossford. Ohio FREDERICKS. John D. (SI Pacific Cay Products Box 2173. Terminal Annex Los Angeles 34. Calif. FREDRIKSSOX. John L (Ri Norton Co.. Box 87 Niagara Falls, Ont.. Canada FREEMAN. Otaries 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.. Allred. N. Y. FRENCH. Preston W. (GI) 1317 Union Ave., Brackenridge, Pa. (Pittsburgh Plate Glass Co.) FREY. E. F. (M) DeVilbiss Co., Toledo 1, Ohio FREY DELL. Octavio Loceria Colombian! Apartado Aereo 10-46 Medellin. Colombia FRIEDBERG. Arthur L. (EF) University of Illinois 217 Ceramics Bldg., Urbana, 111. FRIEDMAN. Louis K. (W ) Homer Laughlin China Co. 212 Fifth Ave., New York, N. Y. FRIGIDAIRE DIVM 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.. Franklinville, N. Y. (Precision Ceramics. Inc.) FRITZ. E. K. (W FI) 710 Walnut St.. Latrobe. Pa. (Stupukor: Div., Carborundum Co.) FROBERG. Laird (R) Ower.s-Corning Fiberglas Corp. Case Ave., Newark, Ohio FROME. Howell E. (G) United Fuel Gas Co.. Box 1273 Charleston 23. W. Va. FRONCZAK, E. T. (S) Richland Shale Brick Co., Box 328 Mansneid, Ohio FROST, Leon J. (E) Box 138, Lewiston, N. Y. (Titanium Alloy Mtg. Div. National Lead Co.) FRY. Herbert G. National Enamels, Ltd., 53 Norman Rd. Greenwich, London, S. E. 10, England FRYE, John C. (B) State Geological Survey 121 Natural Resources Bldg. Urbana, 111. FRYE, 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 3c Standard Sanitary Corp. 40 W. 40th St.. New York 18, N. Y. FU JI I, Takashi Yale University, Dept, of Chemistry New Haven, Conn. FULKER. Richard H. (E l) 1408 Nicklin Ave., Piqua. Ohio (Pemco Corp.) FULLER. A. A. (X) 322 S. Twyckenham Dr. South Bend, Imi. (Soilit Construction Co., Inc.) FULLER. Donald H. (E l) 333 S. Cook Ave.. Trenton. N. J. (Trenton Fabricated Metal Co.) FU LLER. L. R. (E l) 959 E. South St.. Frankfort. Ind. ( Ir.gram-Richardson. Inc.) FULLER. Richard 3. AVI) Universal Clay Products Co. 1523 First St., Sandusky, Ohio FULLER. Richard G. (W ) D. E. McXicoI Pottery Garksburg, W. Va. FULLER. Wilfred (E) General Steel Wares Ltd. Adelaide 2t Nelson Sts. London. Ont., Canada FULM 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. Harry C. (G) Eagle-Picher Co.. Insulation Div. Box 290, Joplin. Mo. FUNKEY. John H. (G) Carr-Lowrey Glass Co. Kloman Sc W enburn Sts. Baltim ore 3, Md. FUNKH OUSER CO. (J. 3 . Sauls) 138 W. Washington St. Hagerstown. Md. FUNNELL, John E. (MI) Southwest Research Institute Box 2296, San Antonio 6, Texas FUSSELL. Lynn E. (E) 3301 Tyrone Dr.. Louisville 18, Ky. (General Electric Co.) FUWA, Tasuku Massachusetts Institute of Technology Bm. 8-314, Cambridge 39, Mass. R oster 35 G GARLAND. C. F. (Si Mason Cily 3rick 4 Tile Co. GAFFNEY. LeKuy J. Mason Citv. Iowa 1103 W. linais St., Urbana. III. GARLICK. Oakley H. (M) GAGIN. L. V. G i 1516 Latnia Elvd., Tolcdu 6. Ohio Paul O. Abbe. Inc. Little Falls. N. I. IL-O-F Glas Fibers Co.) GARLICK. Philip L. (I) GAiLEV. Matthew D. 1 Gladys St.. Cyrildcnc 1601 'A' Montiake P!.. Seattle J. Wash. Johannesburg, South Africa GAINER. Taylor M. i W) ( Primrose 3rick Works) 215 Steedley Dr.. Louisville 14, Ky. GARONZIK. S. H. (Si I American Ra<iiator i Standard 4211 Brookview Dr.. Dallas, Texas Sanitary- Corp. ) (Crown 3rick Mfg. Co.) GAINES. Robert F. (S i GAR RON I. Ricardo E. 10801 Sprague, Spokane 63, Wash. Rua Padre Joao Manuel 975 ( Washington 3rick 4 Lime Co.) Sao Paulo. Brazil GAISER. R. A rthur (G) (Ceramica Sanitaria Porcelite S/A) Bail Brothers Co.. Inc., Muncie. Ind. GARSTANG. Alec GAL3REATH. William W,, Jr. (R I) King, Taudevin & Gregson Ltd. l'JJ Clinton .Ave.. Apt. 5-C Grindlegate Works. Scotland St. Brooklyn 5. N. Y. Sheffield 3. York, England i Babcock & Wilcox Co.) GARTNER. Carl W. (W) GALE. Richard H. (B l General Color & Chemical Co., Inc. 1081 Ailson Rd. Box 7. Minerva, Ohio Cleveland Heights 21. Ohio GARTNER. George C. (W) i Ferro Corp. i General Color 4 Chemical Co.. Inc. GALLAGHER. Thom as F. (G) Box 7. Minerva, Ohio Laclede-Christv Co. CARVE. T. Walter (SFI) Div. H. K. Porter Co. 69 W. Weishcimer Rd. 2512 First N ational Bank Bldg. Columbus 14. Ohio Pittsburgh 22. Pa. (Consulting Engineer) GALLUP. John (CD GARVEY. Lawrence P. (RI) Radio Corp. of America. Tube Div. RCA Victor. 415 S. Fifth St. 415 S. Fifth St.. H arrison. X. J. Harrison. N. J. GALUSHA. Richard L. (W) GASKINS. W. W. (M I) Continental Ceramic Corp. Sierra Tate St Clay Co. Box 41. Bigierville. Pa. Box 390. South Pasadena, Calif. GALVIN. G. H.. Jr. (S) GATES. Daniel W. (XI) Rockford Brick & Tile Co. R.R. 4. Box 221. Huntsville. Ala. Rockford. Iowa ( Redstone Arsenal) GALVIN. Richard J. fS) GATES. Louis E.. Jr. Sheffield Brick 4 Tile Co. Hughes Aircraft Co.. Bldg. 20 Sheffield 1. Iowa Rm. 101SB. Culver City, Calif. GAMBLE. David L. ( R) GATES. Major E. (R) New Jer<ey Zinc Co. of Pa. 773 Vista Grande Ave. Research Dept., Paimerton, Pa. Los Altos. Calif. GAM3LE. John D. (W ) GATLIN. E. H. (S) 3ell & Gossett Co.. 3200 Austin Ave. Texas Clay Products Co. Morton Grove. 111. Box T. Malakorf, Texas GANDY. Robert J.. jr . GAUDIANO. Victor M. (W) 3032 Eastlake. Apt. 3 Sanitarios El Aguila S. A. Seattle 2. Wah. Apartado Postal 25308. Zona 14 GANGLER. James J. (R) Mexico. D. ?. 23533 Stanford Ave. GAUNDER. Wilbur F. (G) Fairview park 26. Chio Pittsburgh Plate Glass Co. ( National A.dvi<or;- Committee for Works No. 11. Mt. Vernon, Ohio Aeronautics i GAUTSCH. Murray C. (MI) GANGULI. Umapati Metal St Thermit Corp. Bengal Enamel Works Ltd. 415 E. 151st St., East Chicago. Ind. P. O. Bengal Enamel. Dist. 24 ParganasGAVIN. G. P. (W ) West Bengal. India Kohler Co., Kohler. Wise. GAN PULE. Anant K. GAWTHROP. Alfred (S) Parshuram Pottery Works Co., Ltd. 885 Maplewood Rd.. Lake Forest. III. Morvi. Sauras tura. India (Chicago Brick Co.) GANTS. Sheldon B. ID ) GAY. Hayward A. (R) Ceramic Associates. Inc. Cincinnati Milling Products Div. 3650 Dvre Ave.. New York 66. N. Y. Cincinnati Milling Machine Co. GARBISCH. Norbert S. (W ) 4701 Marburg Ave., Cincinnati 9, Ohio Garco Products. Inc. GEE. Kenneth H. (B) Box 351. Butler. Pa. GARCIA-LEAL. Ramon (M I) 2033 Westfield Terrace. Bethlehem. Pa. ( Bethlehem Steel Co.) Apartado Postal 1115 Monterrey X. L.. Mexico GEIGER. Charles F. (R FI) Carborundum Co.. Box 268 (M anufacturers Representative) Perth Amboy. N. J. GARCO PRODUCTS. IN C (N orbert S. Garbisch) Box 351 Butter, Pa. GARDEN. Henry R.. Jr. (S) Box 508. Salem. Va. (Old Virginia Brick Co., Inc.) ' GARDNER. Walter E. (S) Ladrillera Monterrey S. A. Apartado 360 Monterrey. N. L.. Mexico GEIGER. Joseph S. (M) 46 E. Welling Ave. Pennington, N. J. (Titanium Alloy Mfg. Div.. National Lead Co.) GEISINGER. E. E. (EF) Pfaudler Co.. 1000 West Ave. Rochester 3. N. Y. GEIST. William J. (X) Young Machinery Co,, Muncy, Pa. GARDON. Robert (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13. Pa. GELLER, R. F. (W F I) 5427 York Lane, Bethesda 14, Md. (National Bureau of Standards) GARFIELD REFRACTORIES CO. (Kenneth A. Rugh) Bolivar, Pa. GELSTHARP. Frederick (GF) 1134 Park St., Tarentum 1, Pa. Vol. 35, No. 10 (1956) GELT2-1AN. Gerald 276 Winthrop Rd., Tcaneck. N. J. GEMMELL. G. (G) Goidir.g-Keene Co., Box 456 Keene. N. H. GEM?. Rohtr: W. (R) 500 Michell St.. Ridley Park, Pa. (Botneld Refractories Co.) GEN DEL. Sydney Z. ( R I 4050 Eastway Rd. South Euciid 2!. Ohio (Zirconium Carp, of America) GENERAL CERAMICS CORP. (Salvatore Ortepiol Crows Mill Rd.. Keasbev, N. J. GENERAL COLOR 4 CHEM ICAL CO., INC. (George C. Gartner) Box 7. Minerva. Ohio GENERAL ELECTRIC CO. (X. F. Shofstall) 1811 LeMovne Ave.. Syracuse, X. 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. Geveland. Ohio GENERAL CLASS EQU IPM EN T CO. (Victor A. Plumbo) 5 S. Virginia Ave. Atlantic Citv, N. J. GENERAL REFRACTORIES CO. (Russell P. Heuer) 1520 Locust St. Philadelphia 2, ?a. GENTRY, Raymond (G) Alexander H. Kerr 4 Co., Inc. Box 2008. Santa Ana, Calif. GENTSCH. A. Page (M) United Clay Mines Corp. 101 Oakland St.. Trenton. X. J. GENTSCH. 3emhard F. (M) United G ay Mines Corp. 101 Oakland Sr.. Trenton, X. J. GEORGE. W. R. (W) Canonsburg Pottery Co. Canonsburg, Pa. GEORGE. W. S. (W) W. S. George Pottery Co. Park Ave.. East Palestine. Ohio GEORGE. W. S.. POTTERY CO. <W. S. George/ Park Ave. East Palestine, Ohio GEO RC-IA-CARO LINA BRICK 4 TIL E CO. (J. C. Hagier. J - ) 10 Campbell Bldg., Augusta. Ga. GEORGIA KAOLIN CO. (Robert H. Bollinger) 433 X. Broad St.. Elizabeth 3, N. J. GEPHART. Charles D. (S) Cedarhurst. Holly Springs. Miss. (Holly Springs Brick 4 Tile Co., Inc/ GERBER. Oscar L. (W) Gerber Plumbing Fixture Corp. 232 X. Clark St.. Chicago 1. 111. GERCAR. Francisco J. - S. A. Cristalerias Del Uruguay Comercio 1491, Montevideo, Uruguay GERSCH. Herbert (S) 3557 Ontario St., Columbus 11, Ohit (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, Ohv GETTO. Allan 585 E. 16th St.. Brooklyn 26, N. Y. GHERIXG. Leonard G. (GF) Preston Laboratories, Box 149 Butltr, Pa. GIACOMELLI, Domenico Soc. It. Refrattari Marghera Azionaria Via Industrie S2 Cas. Post. 308 Marghera, Venice, Italy Roster 3 GIANG. Vu K in Choan Huat Co. Inc. Ill Jose Ruai Si.. Mar.daluyong Rizai Province. Philippines GI3B. Mary J. _ American Ceramic Sociery 4055 N. High St.. Columbus l 4, Ohio GI3BS. Melvin 3. (E ) , inland Steel Co.. Quality Control Dept. East Chicago, ind. GI3SON", Frank 3. (E) 9 Terrace Circle Great Neck. L. I., N. V. i Seaporcel Metals. Inc.) GIBSON. R. L. (W I) 13 la Wilmington Ave. New Castle. ?a. (Shenango Caina, Inc.) GIBSON. Robert C. (E ) Parker Rust Proof Co. 2177 E. Milwaukee Ave. Detroit 11, Mich. GIESEKE. Frans Xockums Etr.aljerverk . Ronr.eby, Sweden G IESER. Ralph H.. Jr. (E) Rheem Manufacturing Co, 7600 S. Kedzie, Chicago 29, III. GIESS. Edward A. (1) Box 903. Alfred. N. Y. GIL. David (D) 122 McCall St.. Bennington, Vt. (Cooperative Design) GILBERT. George W. (G) Owens-Corning Fiberglas Corp. 598 Madison Ave.. New York 22. N. Y. GILES. James H.. Jr. (E l) 1821 Brett St.. Apt. 2 Pittsburgh 5, Pa. (O. Hommel Co.) GILES. Raymond (W ) 142 McXeever St., Crooksville, Ohio (Crooksviile Cnina Co.) GILES. Thomas M. 1674 Berkshire Rd.. Columbus. Ohio GILFILLAN. B. T. (R) Climax Fire 3rick Co., Climax. Pa. G ILFILLA N. J. M. (\V) New Jersey Porcelain Co. Box 903. Trer.ton 5, N. J. GILL. John H. (R) Gill Gay Pot Co.. Muncie, Ind. GILL. Joseph W. ,M I) 685 Van 3uren St.. Des Plaines, 111 ( U. S. Gvpsum Co.) GILL. L averee X. (W I) American Radiator & Standard Sanitary Corp.. Box 268 Torrance, Caiif. GILL. W. T.. Jr. (S) Texas Brick Co., Box 510 Brownwood. Texas G IL L E SPIE . 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. Bensenville. III. (Lindberg Engineering Co.) GIMSON. Joseph F. Worcester Royal Porcelain Co., Ltd. Royal Porcelain Works Worcester. England GINGOLD. Jacob 6 rue de Fontenay, Plessis-Robinson Paris, Seine. France GIRALDEZ. Emilio Ceramica Nacional C. A. Box A -10. Riobamba, Ecuador Vol. 35. No. 10 (1950) GIRARD, R. T. (Ei General Electric Co. Genera! Engr. Lab., Bldg. 37. Rm. 299-33 One River Rd., Schenectady 3. N. Y. GITTER, Alice Josephine (MFI) 39 W. 70th, New York 23. N. Y. (Whittaker. Clark L- Daniels. Inc.) GITZEN. Walter H. (R) 1 Wesley Dr.. Bciicvlile. III. (Aluminum Co. of America) GIVEN. Conrad \V ( ' Great Lakes Steel Corp. Ecorse. Detroit 29. Mich. GLABAU. Ernest R. (G) 140 Woerd Ave., Waltham 54. Mass. (Raytheon Mfg. Co.) GLADDING. Albert C. (S) Gladding Bros. Mfg. Co. Third 5t Keves St.. San Jose. Calif. GLADDING. McBEAN & CO. (S. V. Saginor) 2901 Los Feliz Blvd. Los Angeles 29, Caiif. GLADNEY. Kur: (G) Fiberglas Canada Ltd., Box H Sarnia. Ont.. Canada GLASER, Frank W. (R) Alloy Precision 'Castings Co. E. 45tb St. it Hamilton Ave. Cleveland 14. Ohio GLASER. John H. (G) Uniscience Inc. 112 Crooked Billet Rd., Hatboro, Pa. GLASFORD. James W. 1350 Boilvin Ave., Rockford. 111. CLASSER. Fred P. Pennsylvania State University 226 Mineral Sciences Bldg. University Park. Pa. GLAZE. Francis W. (GFI) 4100 Gallatin St.. Hyattsvilie. Md. (National Bureau of Standards) GLEN-GERY SHALE BRICK CORP. (Gordon E. Lewis) Box 86. Shillington. Pa. GLENSHAW CLASS CO.. INC. (George W. Meyer) Glcnshaw, pa. GLOBE-UNION* INC. (J. Fletcher Harper) 900 E. Keefe Ave.. Milwaukee 1, Wise. GLOSS. Gunter H. (R) International Minerais it Chemicai Corp. 5401 Harrison St.. Skokie. 111. GLOSSBRENNER. D. I. (M) R.R. 12, Box 251. Indianapolis, Ind. (Kaolin, Inc.) GLOSTEX CHEMICALS. INC. (C. G. Wurtsbaugh) 3056 Bandlni Blvd. Los Angeles 23, Caiif. GLOWACKI. George V. (W ) 63 Linden Ave.. Bloomfield, N. J. (Radio Corp. of America) GLYNN. T. W. (G) 1505 Fairidge Dr.. Kingsport. Tcnn. (Blue Ridge Glass Corp.) GODBOLD. Jack W. (W ) 1303 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. GOOOY. Emilio A. (R) E. A. Godoy it Co., Inc.. 25 Broadway New York 4, N. Y. GOETCH1US. Don R. (E) Ferro Corp. 4150 (i. 56th St.. Cleveland. Ohio GOIN. Fred L. (S i) Gladding, McBean 2c Cu., Lincoln. Calif. G OLDING-KEENE CO. (J. G. Gemmell) Box 456 Keene. N. H. GOLDMAN. Basil B. (S) Rhodes Chemical Co. 15-45 S. State S:., Chicago 5, III GOLDSMITH. Julian R. (B) University of Chicago Dept.of Geology, Chicago 57, 111. GOLDSTEIN, Marcy 3. (E J) 6 Gtenfair 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. Cristalera Peidar Ltda Medellin. Colombia GOMEZ, Salvador Odriozola (R) Fabrica de Ladrillos Industriales y Refractarios. S. A.. Apartado 390 Monterrey, N. L., Mexico GONDER. Lawton (W) Goncer Ceramic Arts. Tnc. Box 443. Zanesville. Ohio GONZALES. Narciso (M) Eagle Pencil Co. 710 E. 14th St., New York 9, N. Y. GOODFELLOW , Ted M. (W ) Tektronix. Inc.. 9450 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 4, Xy. GOODRICH. Hoben R. (W I) 1522 Santa Barbara Ave. Glencaie 3. Caiif. (Gladding. Mc3ean St Co.) GOODRIDGE. Paul Box 347. Alfred. N. Y. GOODW IN. Wiiliam Jarrar (3) 2 464 Wallace Dr.. Grand Isla.td. N. Y. f 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. Ohiu (Cincinnati Milling Products Div., Cincinnati Milling Machine Co.) GORNALL. Henry A. (M I) 4357 Ardmore Rd.. S. EuclidCleveland 21. Ohio (Allied Engr. Div,. Ferro Corp.) GORSUCH, Charles A. (M) Ayers Mineral Co., 806 Market St. Zanesville, Ohio OORT. 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. "Wheatlands," Headley Nr. Newbury, Berks, England (A. L. Curtis Co.) GOUDGE. Monson F. (R) Mines Branch, 40 Lydia St. Ottawa. Ont., Canada (Dept. Mines 4 Technical Surveys) R oster 3 O ULD . Anita H. (GJ) 3-0 E. Eighth Ave- Tarentum. Ta. (Pittsburgh Plate Glass Co.) OULD, Robert E. (W FI) Butfaio Pottery, Ir.c. 25 Hayes PI., 3utaio iO, N. V. jO'.VER, Irving \V. (R) '6 W. Boulevard. Mexico. Mo. jlexieo Refractories Co.) / . ..-'F, James 3. (S) Graff-Kittannir.g Clay Prods. Co. Worthington. Pa. 3RAFF-XITTANNING CLAY PROD UCTS CO. (James B. Graff) Worthington. Pa. R A FF, William A. (G) Glass Technology Lab. General Electric Co. 1133 E. 152nd St., Cleveland 10, Ohio RAHAM. Henry C. 18 N. Erie St., Mayville. N. Y. 1RAHAM, John Warren (R) 843 Cascade Rd.. Cincinnati 40. Ohio (General Electric Co.) RA NN EN , 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, Calif. (Gram Ceramic Co.) /RANT. John F. (I) Box 262. Corning, N. Y. RAUER. Oscar H. (G) Fischer 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 St . St. Louis 8. Mo. /P AY, William T. (G) feds 4 Northrop Co. )0t Strrton Ave.. Philadelphia 44, Pa. /Ra YBEAL. Byron F. (M) American Vermiculite Co., Inc. Roan Mountain, Tenn. REA T LAKES FOUNDRY SAND CO. fC. L. Cruik*hank) 720 Untted .Artists Bldg. Detroit 25. Mich. R E EN . A. P - FIR E BRICK CO. (William S. Lowe) 1013 E. Breckenridge St., Mexico, Mo. R E EN , A. T. (F) British Ceramic Research Assn. Queen's Rd.. Penkhull Stoke-on-Trent, England R E E N . 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. (M I) Minneapolis-Honeywell Reg. Co. Wayne 4 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.) REEN E, Charles F. (S) 6046 N. Trenholm Rd., Columbia, S. C. (Columbia Brick & Tile Co.) REENE. Charles H. fG) Box 804, Alfred. N. Y. (State University of New York, College of Ceramics) * \NE, Eleanor L. 24 17th N. E - Seattle, Wash. R EEN E. J. F. (GF) 1043 New Pear. Vineland. N. J. (Kimble Glass Co.) 7 ol. 35, N o. 10 (1956) GREENFIELD, Jerome (M) Seaboard Chemical Corp. 198 Broadway, New York 38, N. Y. GREENHOUSE. Harold M. (3 ) 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 346. Rockville. Md. GREGORIUS. J. S. (G FI) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22, ?a. GRENIER. Lee (M) Magnet Cove Barium Corp., Box 832 Greybull, Wyo. GRESHAM, Lucius C-, Jr. (S) Acme Brick Co., Box 308. Waskom. Texas GRETHER. Charles M. (W ) D. M. Steward Manufacturing Co. E. 36th St.. Chattanooga, Tenn. GREWER, Douglas (MJ) 45-34 47th St.. Woodside 77, N. Y. (United States Army) ' G RIFFIN . Thomas W. "La Feuie" Trclex Vaud. Switzerland (H artford Empire Co.) G RIFFIN . William R. (W ) Wewcantic Shores, Wareham, Mass. (Aerovox Corp.) G RIFFITH . J. Scott (R) 5524 W. Adams St.. Chicago 44, 111. (Armour Research Foundation) G RIFFITH . R. E. (R) R.R. 1, Malvern. Pa. (E. J. Lavino & Co.) G RIFFITH S. Norman Nonporite Pry. Ltd. 292-296 Burwood Rd. Hawthorn E 2. Victoria, Australia GRIGG. Arthur (R) Box 2329. Denver 1. Colo. (Denver Brick & Pipe Co.) GRIGG. Paul E. (E l) 338 N. Dover Ave.. La Grange Park. 111. (Association of American Railroads) GRIM. Ralph E. (X) Depr. of Geology, Univ. of Illinois Urbana. III. GRIMM, Clavford T. (S) Clay Products Assoc, cf the Southwest 109 Perry-Brooks Bldg., Austin 1, Texas GROBB. F. S. (R) G. F. Sterne 4 Sons. Ltd. 126 Bruce St.. Brantford. Ont.. Canada GROOME. Garland L. (R) 931 Jeffrey S t- Baltimore 25, Md. (Haroison-Walker Refractories Go.) GROSS. Harold I. (W) Santa Anita Potteries . 3117 San Fernando Rd. Los Angeles 65, Calif. GROTHAUS, Joseph V. (R) 2552 E. 76th St.. Chicago 49. 111. (United States Steei Corp.) GROVE. Robert L. (W I) 26 Rockland St. South Dartmouth. Mass. (Cornell-Dubiiier Elec. Corp.) GRUNER. Max N. (R) Harbison-Walker Refractories Co. 1325 Ambassador Bldg- St. Louis 1, Mo. GRUVER. Robert M. (G) 1160 Oneida S t- State College, Fa. (Linden Labs- Inc.) GSCHW IND. Jean F. (M) Ross Midwest Fulton Corp. 918 Woodley Rd- Dayton 3. Ohio GUERCI. Carl F. (W ) 1444 Westgate D r- Bethlehem, l'a. (Frenchtown Porcelain Co.) GUGELER. Albert L. (E J) 3897 W. 33rd S t- Cleveland 9, Ohio (Ferro Corp.) GUIMARAES. Helio Per.tagna Caixa Postal 1355 Beio Horizonte, 3razil (Magnesita S. A.) GULICX. Chester (M i Kentucky-Tennessee Clay Co., Ir.c. Mayfield. Kv, GULLINGS. LeRoy V. (G) 125 Parkway Dr., Wabash, Ind. (American Rock Wool Corp.) GUMMESON. ?. Eg. Hoganas-Bilieshoims Akticoolag Hoganas, Sweden GUNTHER. F. W. (S) 849 Baker Ave- N. W. New Philadelphia, Ohio (Universal Sewer Pipe Corp.) GUNZENHAUSER. Adolph (M) Industrial Consultant. 69-70 113th St. Forest Hills 75. L. I.. N. Y. GUPTA. Rajesnwar X. (GJ) 429 S. Division. Ann Arbor, Mich. (University of Michigan) GUPTA. Subodh C. (GJ) Box 101, Port Jervis, N. Y. (Giilinder 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 Co.) GUTHRIE, George 3 . (W) 642 Louisiana Ave- Chester. W. Va. (Hall China Co.) GUZMAN. Hector (G) 2944 Ker.dale Ave.. Apt. 103 Toledo. Ohio (Owens-Illinois) GYWE. Mg Lu Box 216. Alfred. N. Y. H HACK. Walter L. |W ) Western Goid 5; Platinum Co. 525 Harbor Blvc.. Belmont, Calif. HACXETT. James W. (G) 3614 Kenwood Blvd., Toledo 6. Ohio (Owens-Illinois) H.ACKLER. 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 I. Ky. HAECKER. Arthur J - Jr. (R) 1793 Sharon D r- Concord. Calif. (Gladding, Mc3ean 4 Co.) HAEGER POTTERIES. INC. (Joseph F. Estes) 7 Maiden Lane Dundee. III. HAERTLING. Gene H. (W JI) 325 Virginia Ave- Ste. Genevieve. Mo. (Ipseniab of Rockford. Inc.) HAFNER. Harold C. (G) Bausch 4 Lomb Optical Co. Chemical Research Lab. Rochester 2, N. Y. HAFNER. Robert H - Jr. (E) 175 N. Linden Rd- Mansfield, Ohio (Humphryes Mfg. Co.) HAGAN. M. A. (R I) Midwest Research Inst. 425 Volker Blvd- Kansas City 10, Mo HAGAR, Donald (M FI) Box 328, Zanesville. Ohio (Donald Hagar Ceramic Materials) HAGBERG. 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. E. C. (Ci Owens-Illinois. Technical Center 1700 N. Westwood. Toledo 1. Ohio HAGENAUER, Carl J. (G) R.R. 1, Sarver. Pa. {Pittsburgh Plate Giass Co.) HACCLUND. Erik <M) Kanthai Corp , Amelia ?'.. ; Stamford. Conn. riAGEER. ;. C,, Jr. iS ; Georgia-Carolina Brick il Tile Co. 10 Campbell Blcg., Augusta, Ga. HAGNES, Free F. (G) Phoenix Giass Co., Monaca, Pa. HAGY. Henry E. (G) Corning Glass Works Laboratory Corning, N. Y. HAHN, William P. (G) 80 Norwood Ave. North Plainfield. N. J. (Johns-M anvil'.e 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 1880 Elmwood -Ave.. 3uftalo 7, N. Y. HALEM. Robert G. (W J) 1571 L'ndercliff Ave., Bronx 53, N. Y. (Babcock 8c Wilcox Co.) HALL CHINA CO. (John T. Hall) East Liverpool. Ohio HALL. Donald H. 112 3arton St.. Rochester 11, N. Y. HALL. Douglas E. Box 736. Alfred. N. Y. HALL. E. 3. M/S Bird 8t Co. Ltd.. Research Dept. Chartered 3ank Bldgs. Calcutta. India nA LL . Everson fW ) Park Way Ext.. East Liverpool, Ohio (Hall China Co.) HALL. F. P. (W r ) Onondaga Pottery Co., Electronic Div. Syracuse 1. N. Y. HALL, James L. ' 242 Oregon Ave.. Palo Alto, Calif. (Thermo-Materials Inc.) HALL. John T. (W ) Hall China Co.. East Liverpool, Ohio HALL, Morris P. (S) Alton 3rick Co.. 3ox 25 Maryland Heights, Mo. HALL3ERG. Richard C. (W ) 236 Watson Ave.. Fostoria, Ohio (Electric Auto-Lite Co., Spark Plug Div.) HALLER. Percy 319 Carterknowle Rd.. Sheffield 11, England (John G. Stein 8t Co., Ltd.) HALLER, Wolfgang K. (B) Inst, of Silicate Research University of Toledo, Toledo 6, Ohio HALLETT. Crawford W. (RI) Ceramic Supply Co., Box 10$ Crooksville, Ohio HALLOIN, William G. (G) 1218 Broadview Blvd. Brackenridge. Pa. (Pittsburgh Plate Glass Co.) HALLSE. Robert L. 514 S. Chase Ave., Lombard, 111. HALM, Louise (Union Franaise des Produits 'Rfractaires. 15, Rue de Milan Paris 9e, France HAI.VONIK. Frank V. (G) Brockway Glass Co., Brockway, Pa. Vol. 35, No. 10 (1956) HAMAKER. M. L. (Rl Columbia Fire Brick Co. 612 First National Bank Bldg Canton 2. Ohio HAMER. Donald (R) 43$ Elmwood, Evanston. 111. (Lindberg Engineering Co. I HAMILTON, Edgar H. (CD National Bureau of Standards Washington 25, D. C. HAMILTON. Eldon K. Colfax. 111. HAMILTON. Howard C. 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 1. 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 24$, Connell's Pt. Rd. South Hurstville, N. S. W., Australia (Messrs. R. Fowler Ltd.) HAMMOND LEAD PRODUCTS. INC. (William P. Wilke. Ill) 5231 Hohman Ave.. Box 912 Hammond. Ind. . HAMPEL. Richard J. (W J) 3762 O x ro .i S:.. St. Louis, Mo. (Trenton Potteries Co.) HANCOCK BRICK A T IL E CO. (James L. Chiid. Jr. J 3ox 450 Findlay. Ohio HAND. Thomas <K) Corhart Refractories Co. 1600 W. Lee Sr.. Louisville 10. Kv. HNDEN. Jack (GJl 20 Eimora Ave.. Elizabeth, N. J. iL:nited States Armv) 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. L'nion Sta. Alliance. Ohio HANLEY 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 fW J) Hartford, N. Y. (General Electric Co.) HANNEKEN. Henry P. (G) , Mississippi Glass Co., 88 Angelica St. St. Loais 7, Mo. HANNON. Richard C. (M I) 1208 Franklin Rd.. Salem, Ohio (R. T. Vanderbilt Co.. Inc.) HANOVIA CHEMICAL 8b MFG. CO. (R. T. Hopper) One W . Central Ave. East Newark, N. J. HANSARD. W. Carey (W I) 2345 Cheshire Bridge Rd.. N. E. Atlanta. Ga. (Georgia Institute of Technology) HANSELL. U. G. (W) Honeyweil Research Center 500 Washington Ave.. S. Hopkins. Minn. HANSEN. A. (W ) Fords Porcelain Works Perth Amboy, N. J. HANSEN, J E. (E F I) Ferro Corp., 5309 S. District 31vd. Los Angeies 22. Calif. HANSEN. John H. (G) Libbev-Owens-rord Glass Co. 1701 E. 3roadwav, Toledo, Ohio HANSEN. Kenneth H. (M) 307 Edgesvood Ave.. Columbia, Mo. (Consolidated Feldspar Dept., International Minerals 8c Chemical Corp.) HANSEN. Valdemar Kastrup Glasvaerk Ltd. Norrevoidg. 12, Copenhagen K, Denmark HANSEN, Waidemar C. (R) Universal Atlas Cement Co. Garv (Buffington 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 ) Harshaw Chemical Co., 1945 E. 97th St. Cleveland 6, Ohio H A R B ISO N -W A LK ER REFRACTORIES CO. (C. A. Brasbares) 1800 Farmers Bank Bldg. Pittsburgh 22. Pa. HARBIN. Hugh P. 134 Jersey Ln., Clemson, 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 Coilege of Ceramics. .Alfred. N. Y. HARDING. John Roy 4 Greenway, Horsham. Sussex, England (Sussex Sc Dorking United Brick Co.. Ltd.) HARDINGE CO., INC. (Harlowe Hardir.ge) York. Pa. HARDINGE. Harlowe (B) Hardinge Co.. Inc.. York. Pa. HARDY. Ronald G. (SI) Onondaga 3rick Corp., Warners, N. Y. HARES, George 3. (G) 15 Roosevelt St.. Corning, N. Y. (Coming 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 H ARNISH. John D.. Jr. (W I) , Westinghouse Electric Corp. Derry, Pa. 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) Harper Electric Furnace Corp. 39 River St.. Buffalo 2, N. Y. HARPER. Wallace T. (BJ) 3113-B Trinity Ave., Los Alamos, N. M. (Los Alamos Scientific Lab.) Roster 45 1ARR. '.V. J '0 ! 1253 Beirose, Mayfield Heights. Ohio (Harshaw Chemical Co.) 1ARRELL, George O. (D> Box ICO". Sanford. X C. ( S:an;v Shaie Prouucta. *.r.c.) 5 ` ~RIN G TO N , Henry \V (G / _ j) Starrere Ave.. Syracuse 6. N. Y. jdivav process Div., AiiicU Chemical 4 Dye Cor?.) ARRINGTON. Roy V. (G. 10 3eaver Ave.. R.R. 2 Beaver Dams. N. Y. (Coming Glass Works) IA R R IS CLAY CO. (Scroop W. Enloe, Jr.) Spruce Pine. N. C. iA R R IS. George M. (G `i Haoovia Chemical 4 Mfg. Co. 100 Chestnut St.. Newark 3. N. J. -IARRIS. Henry M. (R ) 4114 42r.d S.. Seattle IS. Wash. (U. S Bureau of Mines) HARRIS. James E. (S) 4685 S. Sherm an. Denver. Colo. (Robinson Brick 4 Tile Co.) HARRIS. Joe N. (E J) 412 Florida Ave. S. E.. Atlanta 16. Ga. (Georgia Institute of Technology) HARRIS, Ransom S. (I) Box 695, Newark. Ohio HARRISON. Harold C. (W ) 235 Webster Park Ave. Columbus 14, Ohio (Westinghouse Electric Corp.) HARRISON. William B. (BI) 5325 W. Hadley St. Milwaukee 10, Wise. (Allis-Chaimers Mfg. Co.) HARRISON. W. N. (EF) National Bureau of Standards Ind. Blcg., Enameled Metals Sect. Conn. Ave. 4 Van Ness St.. N. W. Washir.g-cn 25. D. C. T "PSHAW C HEM ICA L CO. ICarl Harbert) 1945 E. 97th St.. Cleveland 6. Ohio HART. John M. (W) New Jersey Porcelain Co.. Box 908 Trenton 5. N. J. HART, John R. (W i 2810 Briggs Ave.. Erie. Pa. I Erie Resistor Corp ) HART. Lerov <"R) 707 Crompton Court Webster Groves 19. Mo. (Aluminum Co. of America) HART. Wade J. (Gl) 908 Lafayette Court. Marion, Ind. (Radio Corp. of America) HARTFORD. Thomas J. (W) 2783 Doresta Rd.. San Marino, Calif. (Gladding, McSean 4 Co.) H A R TIN G . Louis 1007 Main, Rolla, Mo. HARTLEY". Alva G. H . Downing 4 Co. Ltd. Brampton Hill Newcastle. Staffs. England HARTMAN. F. Henry (G) Stouffviile. Ont.. Canada (Crystal Glass 4 Plastics Ltd.) HARTSHORN, T. D. (El) A. J. Lindemann & Hoverson Co. 601 W. Cleveland Ave. Milwaukee IS. Wise. HARTWIG. Frederick J., Jr. (RI) Babcock & Wilcox Co., Box 835 Alliance. Ohio HARVEY. A. M.. Jr. (S) . Roanoke-Webster Brick Co., Box 780 Roanoke 5, Va. iRVEY, Edwin T. (R) 314 W . McPike St.. Vandalia, Mo. (Harhison-W alker Refractories Co.) HARVEY. Malcolm R. 80 E. Center St.. Kaysville. Utah Vol. 35. No. 10 (195(1) 11ASKO, Stephen (W I) 1510 Wheaton Lane. Sii'.er Spring, Md (National Bureau of Standards) HASSELBACH. William <G) Libbey-Owens-Fora Glass Co. 1701 E. Broacuay. Toted.' 5. Ohio HASSETT, William A. ' W". Radio Corp. of America Chemical 4 Physical Lab. 415 S. Fifth St.. Harrison. N. J. HASTINGS. Russell A. tM" Lindlxtrg Industrial Corp. 2321 VV. Hubbard St.. Chicago 12. III. HATCH, Robert A. (B) 4135 N. Bellevie'.v Ave. St. Paul 10, Minn. (Minnesota Mining 4 Mfg. Co.) HATHAWAY, A. J. (R) 8721 Pershing Ave. Niagara Fails. N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) HATHAWAY. Isaac S. ;W> IJI8 Tuttle Ave., Montgomery. Ala (Alabama State College) HATHAWAY, Mrs. U. G. (W ) Alabama State College Montgomery, Ala. HAUBEIN, Wendell L. (R J) 810 Seventh Pi., 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 11. N Y HAUSLER, Elwood B. Box 787. Alfred, N. Y. HAUTH. Willard E., Jr. (B ) 409 Warminster, Hatboro. Pa. (International Resistance Co.) HAVEKOTTE. Walther L. (R) Firth Sterling, Inc. 3113 Forbes St.. Pittsburgh 30. Pa HAVELL. Richard F. (W ) 846 N. Euclid Ave.. Oak Park, 111. (Eagle Grinding Wheel Co.) HAVENS. Irvin F. (R) 2340 Norton Dr.. Augusta. Ga. (Babcock 4 Wilcox Co.) HAWES, Samuel A. (S) 301 N. E. Sixth Ave. Mineral Weils, Texas (Texeramics Co 1 HAWK. Elwin A. (M) Hawk Laboratories. Ittc.. R.R. 1 East Rochester, Ohio HAWKINS. Robert J. S I) 20 Sunnyside PI., Hamburg, N. Y (Buffalo Brick Corp.) HAWKS, Ralph L. (W I) 525 W. Maxwell. Lakeland. Fla. (Florida Tile Industries. Inc.) HAWKS. William L. (R ) 48 Chester Circle, Apt. 2A New Brunswick, N. J. (Sayreville Gay 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 & Jacobs Sts., Wheeling. W v - HAZEL, John J. (R F) Republic Bldg., Rm. 1526 Republic Steel Corp., Cleveland 1. Oliin HAZEN, E. J. (GI) R.R. 2, Ford City. Pa. (Pittsburgh Plate Glass Co.) HEALY. Jaes H. (E) 4511 N. Sbcrman 3lvd. Milwaukee 9, Wise. (A. O. Smith Corp.) HEATH. Donald L. (B i Ohio 3rass Co.. Park 4 Ninth Barberton. Ohio HEATLEY", Sidney M. (Ri Babcock 4 Wilcox Co. 105 S. LaSaiie Si.. Chicago 2. 111. HECK. Frank G. (R) E. J. Lavino 4 Co., 3 Penn Center Plaza Philadelphia 2, Pa. HEDDELL. James V. (RI) 53-3 Decatur St., China Lake. Calif. (U. S. Naval Ordnance Test Sta.) HEDDEN. Walter A. (R) Batteile Memorial Institute 505 King Ave.. Columbus 1. Ohio HEDGES. Lee M (R) R.R. 4, Cedar Grove Rd. Somerville. N. J (Johns-Manviile Corp.) HEDGPETH. James A. (S) Borden Brick 4 Tile Co., Box 1771 Durham, X. C. HEDIN, Claes Olof c/o Malardalens Tegelbruk Stockholm 3. Sweden HEDQUIST. Alfred J. IW) Apartado Postal 525 Guadalajara. Jalisco. Mexico (Loza Fina S A.) HEEBNER. John C. (RI) 88 Pierce Rd., Watertown 72. Mass. (Harvard Business School) HEFTI, Franz Zrcher Ziegeleien. Postfach 357 Zurich 1. Switzerland HEIDTMAN. Clarence F. (G) National Lime 4 Stone Co. First National Bank 31dg. Findlay. Ohio HEILIGMAN. H. A. (RFI) E. J. Lavi.-.c 4 Co., Box 29 Norristown, Pa. HEIMSOETH. Werner M. Farbenfabriken Bayer Aktiengesellschaft (22ct Leverkusen-Bayerwerk. Germany HEINDL, Raymond A. (RF) 4917 4 jrd St.. N. W. Washington 16. D. C. HEINE. H. W. (S) Hudson Supply 4 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.l HEL31NG. Garence H. (G) Pittsburgh Plate Glass Co. Fiber Glass Div,, Shelbyville. Ind. HELLER. Enrique $6 Cerro de Pasco Corp. La Oroya. Peru H ELLIESEN. Richard O. ( E l) - ' ' Pemco Corp., 5601 Eastern Ave. Baltimore 24, Md. HELM. David F. (B) Meilon Institute. 4400 Fifth Ave. Pittsburgh 13, Pa. HELMKAMPF, R. N. (G) Laciede-Christy Co, Div. H. K. Porter Co. 2000 Hampton Ave.. St. Louis 10. Mo. HELSER. Perry D. (W FI) c/o Forrest. Clum. Thomvilte, Ohio (Consultant) HELZ. Armin W. (B) 20 Maryland Ave.. Gaithersburg, Md. (U. S. Geological Survey) HEMBERG. Per Surte Glasswork, Surte, Sweden HEMSTEGER. Samuel E. (E l) 4155 Audubon Rd., Detroit 24, Mich. ( Pemco Corp.) R oster 47 H EN 3Y , E. . (MJ _ Nanimal Engineering Co. Simpson Mix-Muller Div. 549 W. Washington 3lvd. Chicago 6, III. END ERSO N. Krank ?. Ml '2 Mockingbird Ln.. Tyicr. Texas jerro Corp., A.llicd Engr. Div.J H-- JE R S O N . Frederick C. (W F I) Royal China, Inc., Sebring, Ohio HENDERSON. James L., Jr. (S) Robinson Ventilating Co. Zeiienopie, Pa. IEX D ER SO N , Wiiliara \V. (M) Robinson Ventilating Co., Box 217 Zeiienopie, Pa. HENDREN, Robert R. (R I) 105 Bank Ave., Riverton, N. J. (Hoeganaes Spange Iron Corp.) HEXDRYX, Dwight B. <S) Dwight B. Hendryx ic Associates 6621 Darlington Rd., Pittsburgh 17, Pa. HENKEL. Carl F., Jr. (G) _ Corning Glass Works, Corning, X. V. HENRAR, J. M. G. N. V. Porselein en Tegelfabriek MOSA MAASTRICHT Meerssenerweg Maastricht, Netherlands HENRY, Edward C. (B FI) 720 Crawford Ave., Syracuse 10, N. Y. (General Electric Co.) HENRY, Frank R. (R F) Simonds Worden White Co. 1101 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. (GF) Owens-Illinois 1700 N. Westwood Ave., Box 1025 " oiedo 1. Cho ! jLER. J. R. (G) ahemicai Research Lab. Bausch i Lomb Optical Co. Rochester 2, N. Y. H EN SON , Charles W. (R) Norton Co.. Worcester S, Mass. H EN W OO D. Reginald J. (R) 9444 Lynnhaven Rd. Cleveland 20. Ohio (Republic Steel Corp.j HEPPLEW HITE. J. W. (W FI) 12557 Cedar Rd., Cleveland IS. Ohio (Ferro Corp.) H ER B ER T, John S. (S) W. G. Bush ic Co.. 174 Third Ave.. N. Nashville 2, Tenn. H ER B ER T. John W. (W ) 252J Anderson Pky, Toledo, Ohio {Brush Electronics Co.) H ER B ER T. Paul R. (W ) Sandyville. Ohio (Stylon Corp.) H ERBST. Richard J. 1619 Glenwood Ave.. Joliet, 111. H ERG ER. Howard C. (G) Pierce Glass Co.. Port Allegany, Pa. HERKO. Edward (GI) 292 Magee Ave,, Rochester 12, X. Y. (Bausch ic Lomb Optical Co.) H ERM A N. Clarence E. 222 Hillcrest Rd.. Raleigh, N. C. H ERM ANN, Gunter Wheaton Do Brasil S. A. Caixa Postal 1461, Sao Paulo. Brazil H ER M A N N , James L. (W ) 2283 Earlmar Dr. Los Angeles 64, Calif. Redondo Tile Co.) H -.vO LD. Paul G. (BFI) Radio Corp. of America Chemical i: Physical Lab. Lancaster. Pa. VOL. I!."). NO. 10 (1000) HERPEL. Clarence M _(S/ Southern Brick 2c Tile, Inc. Cherokee Station, Box 5 Louisville 5, K.v. HERRON. Robert H. (R) _ _ 1624 N. lronwood Dr., Soutn Bead, In-. ( Bcndix Products Div.) HERTZELL, E. A. (S) 1111 Chestnut St., Dover. Ohio (American Vitrif.ed Products Co.) HESS. B. Parker (G Westinghousc Electric Corp. 700 Braddock Ave., East Pittsburgh. Pa. HESS. F. B. (G) Brockway Glass Co.. Inc. Brockway. Pa. HESS. Robert L. (R) 44 Hess Blvd., Lancaster, Pa. (Armstrong Cork Co.) HF.SSIXGER, Philip S. (BJI) Mycalex Corp. of America Clifton Blvd.. Cliiton. N. J. HEUER. Russeil P. (RF) General Refractories Co. 1520 Locust St., Philadelphia 2, Pa. H EW ITT. L. C. (R FI) Ironton Fire Brick Co.. Ironton. Ohio HEW LETT, James Thomas (E) Ingram -Richardson, Ir.c. Frankfort, Ind. HICKS. James C. (BI) 27550 Edgerton Rd., Los Altos, Calif. (Kaiser Aluminum & Chemical Corp.) HICKS. John F. G. (G) 121 Thompson Dr.. Painted Post, N. Y. (Corning Glass Works) HICKS. Robert G. (E) 60S 2 1st. Bettendorf. Iowa (Herman Nelson Div., AAF) HIGGINS. Ray (W) 191 Overlook Ave.. Wadsworth, Ohio (Ohio Brass Co.) HIGGINS. Waldo W. (EFI) A. O. Smith Cor?. Bex 524. Milwaukee 1. Wi c. HIGGS. Harold P. (B) Automatic Manufacturing Co. 65 Gouvemcur St., Newark 4, X. J. HIGHLEY. Robert W. (R) Richard C. Remmey Son Co. 2382 W. Liiienv Ave. Pittsburgh 16. ? t. HIGMAN. JOHN W - CO. (Robert J. Stonei 24 State St. New York 4. X. V. HILDEBRAND. David (W ) R.R. 2, Hixson. Tenn. (American Lava Corp.) HILL. David C. Box 787. Alfred. X. Y. H1I.L. Ereell C. (S r ) 109 Morton Ave.. Apt. 5 Ridley Park. Pa. HILL. John R. (S) 806 Scenic Dr., Charleston. W. Va. (Charleston Clay Products Co.) HILL. Lawrence I. (G) 507 Carver 31vd.. Toledo 7. Ohio (Libbey-Owens-Ford Glass Co.) HILLING. James I... Jr. 129 Maple Ave.. Altoona. Pa. HINCKLEY. Arthur T. (R) Oldbury Electro-Chemical Co. Niagara Falls. N. Y. HIND. Stanley "The Mount." Etruria Rd. Basford. Stoke-on-Trent. England (Consulting Engineer) HINDES. Stanley V. (M) 88 Union Ave.. Pittsburgh 5. Pa. fPemco Corp.) HINDS. J. F. (G) Canadian General Electric Co. 221 DuiTerin St. Toronto 2. Ont.. Canada HINES. Robert A. (B) 8729 Radley Ct.. Brentwood 17. Mo. (Missouri Pnrtland Cement Co.) H1XK1NS. E. A. (Ci Tygart Valley Glass Co.. Box 502 Washington, Pa. HINTZE. Woilmar W:son Agatan 12. Bromolla, Sweden i A.. B. Ifavtrkeni HIRSSIG. Carl F. ;C . 1210 Fort St., Maumee. Ohio (National Lime i Stone Co.) HI5COCK. Harley J. (R) Fuller Merriam Co., 3ox 69 West Haver., Conn. 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. HITZEMAN, Roger L. (W l) Globe-Union Ir.c., 900 E. Keefe Ave. Milwaukee 1. Wise. HOARE. Henry A. (W) 2655 Sharondaie Dr., X. 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. 220 W. Citrus St.. Colton. Calif. HOCH, Michaei (3 ) University of Cincinnati Dept. Chem. it Met. Engr. Cincinnati 21. Ohio HOCKING. William J. (W) 1612 Pennsylvania Ave. East Liverpool. Ohio (Hall China Co.) HODGDON. Frank B. (3) Box 4122, N. Chattanooga Sta. Chattanooga 5. Tenn. (Tennessee Products 2t Chemical Corp.) HODGES. Leslie R., Jr. Box 1400. Atlanta. l-'a. HODSON. George N. The Hail. Wymeswoid Nr. Loughborough. England (Hatherr.warc. Ltd.) HODSON. Jean E. 4202 Brooklvn. Seattle 3, Wash. HOEHL. Joseph W. (E) Wolverine Prrceiatn Enameling Co 3350 Scotter. .Ave.. Detroit 10, Mich. HOELSCHER. Max W. (E) 5010 Mayfield Rd., Lynchurst 24, Ohin ( Enamel Products Corp.) HOENIG. Clarence L. 4325 Lawn Ave.. Western Springs, 111. HOEY. Paul E. (S) Texas Vitrified Pipe Co. Box 117. Mineral Wells. Texas HOFFMAN. Sidney C. (G) 1646 Lindy Lane. Lexington. Ky. fSytvnnia Electric Products. Tnc.) HOFFMAN. Willard H. J. (M) 3 Dungarrie Rd.. Baltimore 28.. Mri (Clinchfield Sand it Feldspar Corp.) HOFFNER. Jere R. (G) T. C. Wheaton Co.. Millville. N J. HOFSTETTER. G. W. (E) Ferro Corp- 336-338 N. Central Ave Chicago 44. III. HOGAN. Thomas W. (W) Flintridge China Co. 3S0-.1R0 S. Ravmond Ave. Pasadena 1. Calif. HOGARTH. William.' Jr. Box 3829. Georgia Tech., Atlanta, Ga. HOGF. NDOBLER. H. R. (G) Gustin-Bacon Manufacturing Co. 3031 Fibergias Rd- Kansas City. Kans. HOGENSON. William (E) Chicago Vitreous Corp. 1425 S. SSth Court. Cicero 50. 111. HOHMANN. Frederick R. fG) 1012 Parkview Ave. New Kensington. Pa. (Pittsburgh Plate Glass Co.I R o s t e r 40 QLADY, Haroid V,'. Box -16. Ephrata. Wish. OLDEN. Rotert 3. :3> Sylvar.ia Electric products Atomic Energy D:v Box 53. Bayside. N Y. C NER. Irwin X. ;E> : Baysice Dr., Dayton J, Ohio I iv right-Patterson A.E31 OLL. Barton A.. (S ' Logan Clay Products Co. Box 698. Logan, Ohio OLL, Barton S. ( S I 311 \V. Front St., Logan. Ohio (Logan Clay Products Co.) OLLEY. Kenneth E. (R) 113 Pritchard Ave.. Corning. N. Y. (Corning Class Works) OLMES. Gregory J. Rutgers University. 3ox 315 New Brunswick. N. J. OLMES. Lyle A. <M) 82 Pilgrim Rd.. Rosslvn Farms Carnegie. Pa. (Great Lakes Foundry Sand Co 1 OLMES. Roland G. (S) \V. S. Dickey Clay Mfg. Co., Box 402 Pittsburg. Kans. OLMSTROM. Joseph H. (RI) 11211 Washburn Ave.. S. Bloomington 20, Minn. (General Refractories Co.) OLSCHER. H. H. (GF) Owens-Illinois Box 1035, Toledo 1, Ohio LST. Tage Vinkelvej lo. Xongens Lyngby, Denmark (Porceiaensiabriker. Danmark A/S) O LTERH O FF. A. Gray (M) National Saies Corp. 307 E. Fourth St.. Cincinnati 2. Ohio OLZMAN. George R -G) Mellon I n s t i t u t e . 44QQ Fifth Ave. pburgn ;3, Pa. L L, E. M. f E r ' u . Hommel Co.. 3cx 475 Pittsburgh JO. Pa. lOMM EL. O.. CO. (E . M. Hommei) 3ox 475, Pittsburgh 50, Pa. OMVELD. G. H. A. Av. La Colina. Quinta "Alicia" Los Chaguaramos Caracas. Venezuela .'OXSBERG. W erner (W ) Apartado 508. Mexico D. F., Mexico (Fabrica de Loza Ei Anfora, S. A.) OOD, Clyde (G) Leeds 4 Northrop Co. 1922 E. 107th St. Cleveland 5, Ohio iOOD, Harrison P. (GF) 260 Delevan Ave.. Corning, N. Y. (Corning Glass Works) IOOD, L. Scott (I) . Orton Ceramic Foundation 1445 Summit St.. Coiumbus. Ohio iOOP. M. C. v. d. N. V. Royal Delft Ware Manufactory, " De Porceleyne Fies" v /h Joost Thooft 4 Labouehere 196 Rotterdamscheweg, Delft, Holland OOPER, Bradford (R) 5 Point O'Woods Lane, Darien, Conn. (Babcock 4 Wilcox Co.) iOOTON, Norris A. Box 567, Clemson, S. C. [OOVER. Charles H. (S ) 609 Wilton Rd.. Towson 4, Md. (General Refractories Co.) 1C NS. Robert W . (GI) imite Co., Box 151 ..amiiton, Ohio IOPPER. R. T. (D) Hanovia Chemical 4 Mfg. Co. 1 W. Central Ave.. East Newark, N. J. HORAK. Wiiliam (R F ii 223 Raymond Rd. ' West Hartford 7. Conn. (Hartford Empire Div.. Emhart Mfg. Co.) HORNER. M. Harian 4757 17th N. E. St.. Seattle 5. Wash. HORNING. Roy A. iGFT i Armstrong Cork Co . Lancaster, Pa. HORNUNG. Martin R. i\VT) 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. HOSBE1N, Roger L. (R) 13 Standish St.. Frostburg. Md. (3ig Savage Refractories Div.) H OSSENLOPP. Arthur M. (W I) 921 Maplewood Dr.. Kokomo. Ind. (Delco Radio Div., General Motors Corp.) HOSTETTER, J. C. (G FI) 1561 Dale Ave., W inter Park, Fla. (Consultant) HOUCHINS. Henry R. (W ) Carborundum Co., Niagara Falls. N. Y. HOUDESHELL, Robert J. (M) 215 Basswood Ave., Apt. B Dayton 5, Ohio (International d a y 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, Haroid B. 823 S. Eilis St.. Salisburv, N. C. HO WAT. W alter L. ID F) Walter Howat Decorative Ceramics 85 Hopping Ave., Staten Island 7. N. Y. HOWATSON, John (G) University of Wyoming Chemistrv Dept., Laramie. Wyo. HOWATT. Glenn (W ) Bldg. 6-5. A.pt. 3, Redfieid Village Metuchen, N. J. (Glenco Corp.) HOWE. Elroy E. (E F I) Chicago Vitreous Corp. 1425 S. 35th Court. Cicero 50, 111. HOWER. Lawrence D,, Jr. (RI) Rayoestos Div., 75 E. Main St. Stratford. Conn. HOW ER, R. S. (BI) Allen-Bradley Co. 136 W. Greenfield Ave. Milwaukee 4, Wise. HOW IE, Thomas W. Campbell 4 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. 1st Floor Kowloon. Hongkong, B.C.C. (Kiu Foong Enamel Factory (HJC.) Ltd.) HUBBELL. Dean S. (E) Mellon Institute, 4400 Fifth Ave. Pittsburgh 13, Pa. HUBER, George S. (E) 314 Overbrook Rd., Baltimore 12, Md (Pemco Corp.) HUBER. Harold V. (G) 1300 Rancho Rd., Arcadia. Calif. HUBER. J. M-. CORP. (D. P. McAdoo) 100 Park Ave., New York. N. Y. 'ol. 35, N o. 10 (1956) HUBER-W ARCO CO. AMERICAN CLAY MACHINERY DIV., Eucyrus. Ohio HUDSON. Charles J (Rl 74 Newton St.. West Bovistcn. Mass. HUDSON SUPPLY 4 EQU IPM EN T CO. (H. W. Kernel 1727 Pennsylvania Ave., N W Washington 6. D. C. HUETTIG, Fred R. ;W I) 296 Brock Ave, North Plainfield. N. J. (General Ceramics Carp.) HUFFCUT, Harold W. (Gl \ \ estingnousc Electric Corp Electronic Tube Div., Box 234 Elmira, N. YV HUGHES. George B. (E) 236 Indiana .Ave.. Dayton 10. Ohm (Frigidaire Div., General Motors Corp.) HUGHES. W alter M. (W I) 534 Putnam Ave., Zanesville, Ohio (Chicago Standard Transformer Corp.) HUGHEY. Vaughn V. (B) Basic, Inc., Mapie Grove. Ohio HL'I. William L. C. (B) Radio Corp. of .America. Tube I >iv. Marion. Ind. HUKS. Frank 3. IR) Norton Co.. One New Bond St. Worcester, Mass. HULL. J. Brannon (W ) Hull Pottery Co., 327 Amerine Si Crooksville. Ohio HULL POTTERY CO. (J. Brannon Hull) 327 Amerine St. Crooksville, Ohio HULSE. Charles O. 2240 Dwight Wav, Berkeley 4, Calif. H UM SN IK . Michaei, Jr. (B) 23477 Parkwood Dr.. Inkster, Mich. (Ford Motor Co.) HUMMEL. Fioyd A. (B) College of Mineral Industries Pennsylvania State University University ark. Pa. HUMMEL. Richard (G) 615 Olympia Rd.. Pittsburgh 11. Pa. (Harshaw Chemical Co.) HUMMEL. Roy (W) 4313 Grar.tley Rd.. Toledo 13, Ohm (Champicn Spark Plug Co.) HUM PHREY. Richard A. (W) Mycaiex Corp. of America Box 311. Clifton. N. J H U M PH RY ES MANUFACTURING CO. ( D. J. Jones) 291 E. Fifth St. Mansfield. Ohio HUND. George J. i W) 227 Poplar Ave. N. W.. Canton. Ohio (Sparta Ceramics Co.) HUND. Ralph (R) Speer Carbon Co., Theresia St. St. Marvs. Pa. HUNGERFORD. R. M. (X) Ciayburn Co.. Ltd.. 350 W. Hastings St. Vancouver 9. B. C., Canada HUNT. Charles W. (W ) .- - 154 Vincent St.. Giagrin Falls, Ohio (Certain-Teed Products Corp.) HUNT. Herbert J. iG) Kimble Class Co.. Vineland. N. J HUNT. John F. (MI) Carpco Engineering 4 Manufacturing Co. Jacksonville, Fla. H U N TER . Charles E. (M) Box 430. Erwin, Tenn. (Consolidated Feldspar Dept., International Minerals 4 Chemical Corp.) H UN TING , Everett C. (GI) 2030 Grove St.. Berkeley 4, Calif. (Microchemical Specialties Co.) HUP PERT. Paul A. (E l) 414 Randolph Rd.. Plainfield. N. J. (General Ceramics Corp.) IIU R D , Burgess M. (W) 3 Windy Crest Rd.. Beaver Palls. Pa. (Ceramic Color 4 Chem. Mfg. Co.) R oster 51 HURLEY, Robert E. (3 ) 469 Camden Ave. M ooreiiow n. Burlington County, X. J. t RCA Victor} HURLEY. T. ?. ( 3) Sprague Electric Co. v'or:h Aitami. Mass, r jT. Erwin J. (V.-) citerai Ceramics Corp. Plant J, Research Dept. Keasbey, N. J. HURST. Thomas L. iR ) Monsanto Chemical Co. Everett ita ., Boston 49. Mass. H U TC H IN S. John R.. I l l Massachusetts Institute of Technology Rm. 4-05 1. 77 Massachusetts Ave. Cambridge 59, Mass. H U TC H ISO N . Clark (E F I) 7U9 E. A rm strong St., Frankfort. Ind. ( Ingram Richardson, Inc.) H U TC H ISO N , R. C. (R I) 2155 Newton Ave., Bethlehem. Pa. (Bethlehem Steei Co.) HUTT. Glenn A. (E F) 9629 Scottsdale Blvd. Shaker Heights 22, Ohio (Ferro Corp.) HUTT, Gordon M. (R) Canadian pacific Railway 705 Windsor Station Montreal 5. Que., Canada ilUYCK. L. G. (E ) Huyck Construction Co. 1861 DeCook Ave., Park Ridge, 111. HYATT, Edmond P. 5499 Fleetwood Dr. Sait Lake City 9, Utah HYDE. Collin (R I) 581 O xford St., Worthington, Ohio (Batteile Memorial Institute) HYLAND. J. A. (E) Pacific Coast Borax Co. 5456 W Peterson Ave.. Chicago 45. 111. HYNES. Frank J. (W I) \bow Rd., Wavland, Mass, iaytheon Mfg. Co.) Hh u o L E . Andre Socit Generale de Carrelages 57, rue Leon 3Ium Feignies (N ord), France HYSLOP. Joseph F. "Dromore," Major s Loan Falkirk. Scotland (J. G. Stein 4 Co.. Ltd.) I ANDER. J. Richard (M) Ceramic .Vetvs, 509 S. Beverly Dr. Beverly Hiils, Calif. ICHIKAWA. Yoshio (W ) 1905 Hanover St.. Apt. 10 Pittsburgh 18. Pa. (Westinghouse Electric Corp.) 1HRIG, Allen C. (G) 127 Corning Blvd.. Coming, N. Y. (Coming Glass Works) ILES. Ramon R. (G) 2225 Sc. James Ct., Owensboro, Ky. (General Electric Co.) ILIFF. Fred K. (W) Harshaw Chemical Co. Jackson 4 Swanson Sts. Philadelphia 48. Pa. 1LLING, Amo M. (W ) 5412 Laconia. Cincinnati 37, Ohio (Cambridge Tile Mfg. Co.) ILLINOIS CLAY PRODUCTS CO. (Howard F . West) 68 N. Chicago St. Joliet. 111. LLYN. Alexis V. 185 Bevier Rd.. University Heights 'w Brunswick, N. J. II lfF, Edward J. (M) ,,-nited States Glass Co. Glassport, Pa. MM ED IATO . Robert R. (W I) _ Sprague Electric Co., Nashua. X. H. vrOL. 3, N o . 10 (10;-)0) INDIAN CERAMIC SOCIETY (H. N. Roy) Dept, of Ceramics Benares Hindu Univ . Benares. India INDIANA GLASS CO. Dunkirk, Ind. INDUSTRIAL CERAMIC PRODUCTS. INC. tC. R. Oberst) 965 W. Fifth Avt., Columbus 8. Ohio INCERSOLL. Harry ( ) 455 S. Catalina St. Los Angeles 5, Calif. ( Petnco Corp.) INGHAM. David (W) Box 546. Kittanning, Pa. (Eljer Division) INGRAM-RICHARDSCN, INC. (R. H. Coin) Jefferson Rd. Frankfort, Ind. INSLEY. Herbert (BF) 5219 Farrington Rd. Washington 16. D. C. (Consulting Mineralogist) INSLEY. Robert H. (B) Champion Spark Plug Co.. Ceramic Div. 8525 Butler Ave.. Detroit 11, Mich. INSTITUT de CERAMIQUE FRANAISE (Louis Dcsmarpuest) 6 Grande-Rue Sevres (S. 4 O.). France Insulator-- See General Electric Co. INTERNATIONAL CLAY MACHINERY CO. (R. H. McElroy) 1145 Bolander Ave.. Davton 1. Ohio INTERNATIONAL COMMISSION ON GLASS (B. P. Duddir.g) Research Laboratories General Electric Co.. Ltd. Wemblev. Middlesex. England IRLAND. David L. Box 787. Alfred, N. Y. IRONTON F IR E BRICK CO. (J. H. Rickey, Jr.) Box 556 Ironton. Ohio IROQUOIS CHINA CO. (Roierr E. Anderson) 2520 Milton Ave.. Svracuse 9, X. Y. IRVIXE. George C. (W I) Canadian Carborundum Co.. Ltd. Niagara Falls. Ont.. Canada IRWIN. Joseph T. (E) 1618 Elmwood Ave., Lakewood 7. Ohio (Consultant) IRWIN. Philip P. (W) Potters Supply Co. East Liverpool. Ohio IRW IN. William W. (W ) Potters Supply Co. 11 Washington St., East Liverpool. Ohio ISAACS. Richard P. (M> 78 Elmwood Dr.. Livingston, N. J. (Hammill & Gillespie. Inc.) ISAGAWA. Jun Nippon Toki Kaisha, Ltd. --1, Noritakeshinmachi. Nishiku Nagoya, Japan ISELIN. Charles W. (GJ) Thatcher Glass Manufacturing Co. Elmira. X. Y. ISENHOUR. C. W.. Jr. (S) Isenhour Brick & Tile Co.. BosC 1249 Salisbury, N. C. ISENHOUR. John H. (S F ) _ 215 Confederate Ave.. Salisbury, X. C. (Isenhour Brick 4 Tile Co.) ITO, Sbozo Nippon Gaishi Kaisha. Ltd. 1. 2-Chome. Horita-dori, Mizubo-kn Nagoya, Japan ITSCHNER. Robert Tannenraucbstrasse 106 Zurich 58. Switzerland (Tonwerke Thayngen AG) IVES. John B. (R I) 18 Standish St., Frostburg. Md. (Big Savage Refractories Div.) IVEY. J. Ray (S) Acme Brick Co. R.R. 1. Millsap, Texas JABBUSCH. Arthur J. (S) Pomona Terra-Cotta Co. Greensboro, X. C. JACKSOX, A. Curtis (S F I) Robinson 3rick 4 Tile Co. 390 5. Sar.ta Fe D r, Denver, Colo. JACKSOX, James Avonhaugh, Stonehouse Lanarkshire. Scotland JACKSOX, Mary A. 486 Boynton Ave.. Berkeley 7, Calif. JACKSON T IL E MFG. CO. (R. T. Lowrance) Box 2006 Jackson, Miss. JACKSON V IT R IF IE D CHINA CO. (Philip R. Distillator) 2 West St. Pelham Manor 65, X'. Y. JACKSON, Wharton (M) Wharton Jackson Co. 475 Huntington Dr. San Marino 9. Calif. JACKSON. William M.. II (W ) 15 Maura Dr.. Wooum, Mass. (Godfrey L. Cabot, Inc.) JACOB. Bernard T. (RI) National Crucible Co. Mermaid Lane 4 Queen St. Philadelphia 18, Pa. JACOBI. James H. (E) Avco Manufacturing Corp. Crosley-Bendix Home Appliances Div. Dept. 474, Nashville 1. Tenn. JACOBS. Charles W. F. (W) 19 A Longmeadow Rd. Eggertsville 25, N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) JACOBS. H. Box 117, Vereeniging Transvaal. South Africa JACOBS, Louis J. (R) Ramtite Co.. 2565 W. 13th St. Chicago 3. ill. JACOBS. Richard A. (G) 3rockway Class Co., Inc. 3rockwav. Pa. JACOBSON._d (E) Mavtag i_o.. Newton. Iowa JACOBY. William R. 241 Upson Lane. University Heights New 3rur.swick. X. J. JA FFE. 3em ard <Bt) 4258 Hinsdale Rd. South Euclid 21. Ohio (Clevite Research Center) JAM ESON. Robert J. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo S, Ohio JAM ISON. C. Donald. Jr. (R) Koppers Co.. Inc.. Eng. 4 Const. Div Koppers Bldg., Pittsburgh 19, Pa. JANKE. Charles E. (S) 4635 Horton Rd. Garfield Heights 25. Ohio (Cleveland 3uilders Supply Go.) JANKOW SKI. Charles R. 16 Hakes Ave.. Homeil. X. Y. JANSEN. Gerard F. Box 2517. Georgia Tech., Atlanta. Ga. JANSMA. Frank (M) B. F. Drakenfcld 4 Co.. Inc. Washington. Pa. JANSSEN. William F. (M) 15 Oak Ridge Rd., Basking Ridge. N J (Bell Telephone Labs.) JEFFERY . Benjamin A. (W ) Box 32, Tumacacori, Ariz. JEFFREY . G. H. (W) Roder Ceramic Studio, 1531 Race St. Philadelphia 7. Pa. JELIN EK . James W. (BJI) 1205 Seventh Ave., Marion. Iowa JEX KS. C. E. (B) W . S. Tyler Co. 361S Superior Ave., N. E. Cleveland 14, Ohio R o s t e r :5 JEN NIN GS. James W. (E) QuakeT Silver Co., Inc. North Attleboro, Mass. JEN SEN , Edwin K. (E ) lid ia Minden Ave., Detroit i. Mich. (Briggs Mfg. Co.) "SEN, Robert O. (S; Natco Corp., Waynesburg, Ohio jiuPPSON . George N. (RF) f Norton Co., One New Bond St. i Worcester 6. Mass. JERO, Parker (E) 932 Birchwocxi Dr., Washington, III. (Caterpillar Tractor Co.) JERVIS. Julian S. . 7S0 Fowler St. N. W., Atlanta, Ga. JHUNJHUNWALA. K. P. (J) Orissa Industries, Ltd., P. O. Barring Disc. Cuttack, Orissa, India JIMMERSON, 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) Sbenango China Inc., New Castle, Pa. JOHNSON, Alexander H. H. L. Brisbane 2c Wunderlich Ltd. Lord St., East Penh, West Australia JO HN SON . Alton E. (W I) 4903 N. 53rd St.. Milwaukee, Wise. (Globe-Union, Inc.) JO HN SON . A. L. (W F) Universal-Rundle Corp. W. Keith McAfee Lab., Box 1268 Mahoningtown, Pa. JO HN SON . A. M. (R ) Ross-Tacony Crucible Co. Robbins & Milnor Sts. Philadelphia 35, Pa. JO HN SON . Ben (SJ) 5224 Valley Oak Dr., Austin 3, Texas (University of Texas) ---- -XSON. Boyd M. ,R) Carborundum Co.. Box 268 Perth Ambov, N. J. JO HN SON . Bruce M. 353 Highland Dr.. Seattle 9, Wash. JO HN SON . David M. (BJ) 510 Southland Blvd., Louisvilie 14. Ky. (Corhart Refractories Co., Inc.) JO HN SON . Dudley B. (E) Glasete Products. Inc. 20900 St. Clair Ave.. Ce-eiand 17. Chio JOHNSON. Earle K. (S) Eureka Brick 8c Tile Co. Box 338. Clarksville. Ark. JO H N SO N . Elwin L. 1107 W . Green St., Apt. 225 Urbana. 111. JOHNSON. Fred H - Jr. (S) Summitviile, 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 Ol instead, Ohio (Ferro Corp.) JO H N SO N . Harold C. (G) Coming Glass Works Coming, N. Y. JO H N SO N . J. A. Progress Engineers. Ltd., Leek New Rd. Cobridge, Bursiem Stoke-on-Trent. England JO H N SO N . James E. (W JI) 3173 Herrick Rd., Columbus, Ohio (United States A ir Force) JO H N SO N , James R. (BI) j Oak Knoll Dr. IVhite Bear Lake 10. Minn. (Minnesota Mining 8c Mfg. Co.) JO H N SO N . Keith A. 3722 Warren St.. N. W. Washington 16, D. C. Vol. 35, No. 10 (1950) JOHNSON, Keith N. 441 Westwood Dr . Ames, Iowa JOHNSON. Larry R. 3529 Ivy Rd., Atlanta 5, Ga. JOHNSON, LeRov A. ( h . 1206 Cleveland St.. Evanston. 111. (Chicago Vitreous Corp.) JOHNSON, Norman W. (R ' Eaton Manufacturing Co. 9771 French Rd.. Detroit, Mich. JOHNSON. Paul V. <SF; Structural Clay Products Research Foundation, Geneva, 111. JOHNSON. William A. (E) 7269 Greenieaf Ave. Cleveland 30, Ohio (Ferro Corp.) JOHNSTON. J. G. Leeds Fireclay Co., Ltd. Wortley. Leeds 12, England JOHNSTON. James K. (M) 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 128. 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-Mundle Sc Co.) JONES. Maynard J. (E ) Pfiutiler Co.. KOf, W js; Ave. Rochester U . N. Y. JONES METAL PRODUCTS 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 ) National Tile i Manufacturing Co. 1200 E. 26th St.. Anderson. 1ml. JONES, Richard E. (R> Pittsburgh Plate Glass Co. Research Laborntorv, Creighton. Pa. JONES. Robert O. (R)" Standard Slag Co. Box 3. Gahfcs. Nev. JONES. Roger D. (R) 28 Cushing PI., Buffalo 20. N. Y. (Electro Refractories 8t Abrasives Corp.) JONTZ. Melvin L. (M) 5028 Alhambra Ave. Los Angeles 32. Calif. (Melvin L. Jontz Co.) JORDAN. John N. (G) Consumers Glass Co. Lid. 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 WORKS (J. L Jova) Roseton, N. Y. JOVA, J. L. (S) Jova Brick Works. Roseton, N. Y. JOYNER. Bobby L. (W ) Erie Resistor Corp- 644 W. 12th St. Erie, Pa. JUDKINS. Sober: W. tW> Wilbur 3. Driver Co. 1375 McCarter Hwy., Newark 4. N. J. JUELSS, David (Ml American Lead Prncii Co. 500 Wiilcw Ave., Hoboken, N. J, K KACICZ. Joseph M- Jr. 210 Clinton Rd., West Caldwell, N. J. KADEY, Frederic L - Jr. (B) 1825 Quiraby Lane. Westfield. N. J. (Johns-Manville Corp.) KAKLSON. W. S. (G) 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 3e!lwood Ct.. Apt. II Columbus. Ohio KALLUP. Charies. Jr. (W I) Helipot Corp.. 916 Meridian Ave. South Pasadena. Calif. KALMAN. Frank R. (E l) 2014 Baxterly Rd- Lakewood 7, Ohio (Pemco Corp.) KALMBACK. William J. (G) Kimble Glass Co. 1700 N. Westwood Ave- Toledo. Ohio KALOUSEK, George L. (G) 2633 Merritr.ac Blvd., Toledo 6, Ohio ( Owens-Illinois) KAMICH. Barnet Z. (3) II Garwood St., South River. N. J. (Army Ordnance Corps) KAMLER. Anthony R. 713 Seventh Ave- Ford City. Pa. KANAZAWA. Edward 12333 Sylvan St. North Hollywood. Calif. KANE. John L. iW ) 3457 Wickiow Ave . Cincinnati 36. Ohio (Cincinnati Milling Machine Co.) KANTOR. Netl I. (W) 198 Mason Dr.. Metuchen. N. J. (Crowley Div., Aerovox Carp.) KAPADIA. mi -Ei 30216 N. Fourth St- .Miles, Mich. 1Kawneer Cs.) KARKKANAVALA. M. D. 239. 3otawaia Bldg.. Tardeo Bombay 7. India (Atomic Energy Commission) KARNAS. John S. 718 Echo Ave- Zanesville. Ohio KASSEL. Robert 'iVl Lenox, Inc- Pomona, N. J. KASSEES. John 5. (B) American Testing Lab- Inc. Box 1421. Lancaster, Pa. KAST. Edward T. ' ~ Box 847. Alfred. N. Y. KASTEN. Vernon L. (W I) Three Oaks. Box 84, Jackson, Mo. (Ceramo Co. Inc.) KASTENBEIN. Ernest L. (W ) 100 E. Van Ness Ave., Rutherford. N. J. (Tile Councii of America) KATZ, Joseph M. (W I) 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. (Tuttle 8c Kift, Inc.. Subsidiary Ferro Corp.) KAUFFMANN. Otto T. (W) Frontenac Floor Sc Wall Tile Ltd. Kingston. Ont- Canaria KAUTZ. Karl (EFI) 24 Leon Rd- Pittsburgh 20, Pa. (Vitro Mfg. Co.) R oster 55 KAY, William T. (R) E. J. Barteils Co, 1212 Sixth Ave.. S . Seattle a. Wash. KAYSER. Julius A. (R ) Gladding, Mc3ean & Co. 2901 Los Feiic Blvd. .os Ar.geles 39. Calif. . iS'EY, J. C. (G'i 1201 Banksviile Rd.. Pittsburgh 16, (National Lime 4 Stone Co.) KEANEY. Joseph C., Jr. (G) Feldspar Corp.. 1201 Banksviile Rd. Pittsburgh 16, Pa. KEANEY, Robert C. (G) St. Lawrence Fluorspar. Inc. 1201 Banksviile Rd.. Pittsburgh 16, Pa. KEARNEY, John P. (G) 2723 Densmore Dr., Toledo 6, Ohio (Kimble Glass Co.) KEBLER. Leonard (E ) W ard Leonard Electric Co. Mt. Vernon, X. Y. KEEFE. Robert M. (R ) 133 Puritan Rd., Plymouth Meeting, Pa. (Mullite Refractories Co.) K EEFER, George E. (G) Owens-Illinois, Technical Center 17C0 X. Westwood Ave. Toledo 1, Ohio KEENER. Harry T. R. R. 3, Minerva, Ohio KEHL, Nelson H. (R I) E. J. Lavino it Co. Box 29, Norristown. Pa. KEIM, Laurence A. (G) 144 Cochran Rd., Pittsburgh 23, Pa. (Pittsburgh Plate Glass Co.) K EITH . Miss L. C. Canadian Ceramic Society 49 T urner Rd. Toronto 10, Ont., Canada K EITH . Wendeil P. (R I) 1234 E. Marvista St., W hittier. Calif. (W . P. Keith Co.) i-LER. Francis Pfungen. Switzerland (Kei'.er 4 Cie. A.G.) K ELLER. George W. (G) Owens-Illinois 1700 N. Westwood Ave., Toledo 7, Ohio KELLY. Austin J. (E) Guciph Stove Co., Ltd.. York Rd. Gueiph, Ont., Canada KELLY. George D. , E) 1100 Dublin Rd.. Columbus 12, Ohio (Batteile Memorial Institute) KELLY. Hal J. (R) 6025 52nd X. E.. Seattle S. Wash. (U . S. Bureau of Mines) KELLY. John V. (R) Kaiser Steel Corp. Box 217, Fontana. Calif. KELLY. Joseph F. (R) 301 BraddocR Ave., Lansdowne. Pa. (Naval Boiler it Turbine Lab.) KELLY, William J. fW I) Box 265, Hondo. Texas (Universal-Bundle Corp.) KELSEY. V. V. (MF) Dominion Minerals Div., Riverton Lime & Stone Co., Inc. Piney River, Va. K ELTO N , Stanton C.. Jr. (G) Rohm it Haas Co., Bristol. Pa. KEM P. John A.. Jr. (W ) 1414-A Hickory Ave., Torrance, Calif. (American-Standard) KEM PF. William C. (R I) 28 Homer PI.. Metuchen, N. J. (Carborundum Co.) 'ENAGY, Lloyd N. (R J) Claysburg, Pa. (General Refractories Co.) KENAGY, William L. (RFI) 770 Fetters Mill Rd. Huntingdon Valley. Pa. (Simonds Abrasive Co.) KENDALL, Thomas A. (S) 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 IJ29, Trenton 7, N J. KENT. Joseph P. (W I) 247 Starr St.. Brooklyn 37, N. Y. (Leviton Mfg. Co.. Inc.) KENT. N. Johnson (RI) 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) Mavfirld. Kv KENTUCKY-TENNESSEE CLAY CO.. INC. (Chester Culick) Mayfield, Ky. KENWORTHY. Orville O. (B) 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. (R FI) 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.) KER PER. Matthew J. (BI) National Bureau of Standards Div. ,2, Washington 25. D. C. KERR. Charles H. (GF) 2361 Chatswonh Blvd. San Diego 6, Calif. KERR. John M. 22S X. Purdue. Apt. 109 Oak Ridge. Tenn. KERR. W. Raymond (RFI) Armstrong Cork Co. Box 44], Beaver Falls. Pa. KERSKNER. William G. (W t) 117 S. 14th St.. Olean. N. Y. (Olean Tile Co.) KESKI. James R. 8610 44th Ave.. S.. Seattle 18. Wash. KESSEL. David J. 902 W. Green, Urbana. III. KESTER. Ralph G. (G) 1394 June Dr., Maumee. Ohio (Kimble Glass Div., Owens-Illinois) KIBLER. H. W. (W ) Southern Potteries. Inc. Box 279. Erwin, Tenn. KIEHL. Harry R. (G) 223 Chemung St., Corning. N. Y. (Coming Glass Works) KIESOW, Paul F. (G) Forest Hills Dr., Elmira. N. Y. (Westinghouse Electric Corp.) KILCOYNE, John R. (W ) Canadian Porcelain Co. Ltd. Box 428, Hamilton, Ont.. Canada KILGORE CERAMICS CORP. (D. H. Wallcup) Box 1619 Kilgore, Texas KILLMAR, Henry M. (R I) 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. VOL. 35. No. 10 (195(3) KIM, You S. North Carolina State College Box 3540. Raleigh. N. C. KIM BLE GLASS CO. (H. R. Black) 1700 N. Westwood Ave.. Toledo. Ohio KING. 3urnham W.. Jr. (E FI) 2234 Lane Rd.. Columbus '.4, Ohio (Batteile .Memorial institute) KING. Charles B. |G 5 189 Cedar 5:.. Coming, N. Y. (Coming Glass Works) KING. H arr/ M. (M J) a39 Washington ?!., Sycamore. 111. (Corps of Engineers, U. S. Army) KING, R. M. (E F I) Lord Kail, Ohio State Univ Columbus 10, Ohio KING. Robert G. (W ) 143 N. Center 3:.. Grove City. Pa. (Vitro Mfg. Co.) KING. Roben M. 807 S. Victor, Champaign. 111. KING. Waltet F. (M) 365 Arborlea Ave., Morrisville. Pa (Shenandoah Silica Co.. Inc.) KINGERY, W. D. (B) Ceramics Div., Mass. Inst, of Tech Cambridge. Mass. KIN3M.4.N. Bradley Q. (GJI) 120 W. Water St.. Painted Post. N. Y. (Coming Glass Works) KIRCHER. Paui J. (G) Maryland Glass Corp. 2147 Wicomico St., Baltimore 30. Md. KIRCHER, Wolfgang (22b) Eisenberg/Pfalz Tiefenthalerstr 16. Germany (Messe. Didier--Werke A.G.) KIRCHNER. Henry P.. Jr. (B) Coming Glass Works. Coming. N Y KIRKEXDALE. G. A. (I) c/o American Embassy Tel-Aviv. (Mail Room) Dept, of State Washington 25. D. C. KIRKPATRICK. Frank (W FI) S4 Strand. Hermosa Beach. Calif. (Gladding, Mc3ean 4 Co.) KIRKPATRICK. H arry B. (E) Xationa! 3ureau cf Standards Div. 9 .4 , Washington 25. D. C. KLAXE. Frank (G) _ Corning Glass Works. Corning. X. Y KLAUS. Irving (W) 137 Winthrcp Rd.. Washington Park Nixon. X. J. (Permacer.t Products. Inc.) KLAUS. Sol C-. Jr. (W) 50 S. Munn Ave.. Apt. 804 East Orange. X. J. (Automatic Mfg. Corp.) KLEEMAX. Lee A. (R) 2210 Briargien. Apt. 3 Houston 27. Texas (Harbison-Walker Refractories Co.) KLEIN. Jonathan D. Massachusetts Institute of Technology Rra. 4-051. Cambridge.39x Mass, KLEIXHAXS. 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. KLEYMEYER. Clifford A. (S) Standard Brick & Tile Corp. 123 X. W. Fourth St. Evansville 8, Ind. KLIMAN, Morton I. 6 Sutton St., 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 R oster 57 K LIN EFELTER. T. A. (R FI) 2116 "K'1 S:.. N. W. Washington 7, D C. KLINGSBERG. Cyrus 303 Linden Rd.. State College, Pa. K LIPPER . Joseph i Ml Clipper Diamond Tool Co.. Inc. i 345 Hudson St.. New York 14, N. Y. .liOCXE, Edward J. (M) H. C. Spinks Clay Co., Inc. 1000 First National Bank Bldg Cincinnati 2, Ohio KLOCXNERTHerman Richard 1E 1 Universai-Rundle Corp. W. Keith McAfee Lab., Box 1268 Mahoningtown, Pa. K N A PP. Robert C. (W) 26 Virginia Ave., N. W. Glen Burnie, Md. (Insulator Dept., General Electric Co.) K N A PP. 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. XNAUFT, Robert W. (R) Charles Taylor Sons Co. Box 38, Annen Station Cincinnati 14. Ohio KNECHT. Albert O. (W I) 201 Edgewood Ave., New Castle, Pa (Universai-Rundle Corp.) KNIGHT. E. H. (S) Maurice A. Knight Sons Co. Box ISO. Crooksville. Ohio K NIGHT. M. A.. Jr. (S) Maurice A. Knight, "Knight-W are " Box 111. Akron 9, Ohio K N IG H T. MAURICE A.. "XNIGHT-W ARE" (M. A. Knight. Jr.) Box 111, Akron 9, Ohio -'N IG H T , Meilen A. (G) Minnesota Mining Sc Mfg. Co. 2301 Hudson Rd., St. Paul 6. Minn. KNIGHTON. Heywood J. (G) 334 Trombley Rd. Grosse Pointe Park 30. Mich. (Ford Motor Co.) K N ISELY . Robert C. (G) 2907 Letcnworth Pky., Toledo 6. Onto (Kimble Glass Co.) K NIZEX. Jan Otto (R) Apartado 2739, Mexico. D. F. Mexico (Compania Mexican a de Tubos de Albanal, S. A.) KNOBLAUGK. 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. K NOW LES. Philip S. (S) 441 E. Buford Rd.. Macon, Ga. ( Elgin-Butler Brick Co.) K NO W LES. William V. (E F) 890S Champlain Avc. Niagara Fails. N. Y. KNOW LTON. Samuel H. (W) 610 New Center Bldg.. Detroit 2, Mich. (Aluminum Co. of America) KNOX. Jantes J. (G) S M einter St.. Avend. N. J. (K nox Laboratories. Inc.) K N U D SEN . Friedrich P. (BO 4912 Crescent St.. Washington 16, D. C. (National Bureau of Standards) KNUDSEN. Rolf Borgestad. P. A.. Norway (Borgestad Fabrikker) K NUTSEN, Eivind (R) W estern Refractories Co. Box 169. lone. Calif. DCH. D anid O. (M) E. I. du Pont de Nemours Jt Co.. Inc. Electrochemicals Dept. 71 Buckingham Ave. Perth Amboy, N. J. VOL. :r>, NO. 10 (1000) KOCH. Frank A. (M) National Sales Corp. 307 . Fourth St.. Cincinnati 2, Ohio KOCH. Kenato Direttore Stablilmento Tubi Elettronici Marconi Italians S.p.A. Via Pile, L'Aquila. Italy KOCH, William J. (W I) A. C. F. Electronics 1336 N. Henry St., Alexandria, Va. KOCHANEK. Michei (R'l 414( 15ord St., S. E., Bellevue, Wash. (Gladding, McBean i Co.) KOEHLER. W. A. (R I) Mineral Industries Bldg. West Virginia University Morgantown, W. Va. KOENIG, Charles Jacob (W FI) Engr. Expt. Sta,, Ohio State University Columbus 10, Ohio KOENIG, E. W. (M) Consolidated Feldspar Dept. International Minerals St Chemical Corp. 20 N. Wacker D r,, Chicago 6, 111. KOENIG, John H. (W F I) Rutgers University School of Ceramics New Brunswick. N. J. KOENIG, L. C. (X) Lindberg Engineering Co. 24S0 W. Hubbard St.. Chicago 12, III. KOHL. Hans Leerbachstr. 117 Frankfurt A. M., Germany (Degussa) KOHLER. Anthony M. (R ) _ 400 Atlantic Ave., Springlake. N. J. (Consultant) K O H LER CO. (G. P. Gavin) Kohler, Wise. KOHN, Joseph (WI Universal Dental Co. 48th Sc Brown Sts., Philadelphia 39, ?a. KOHNE, Frank H. (W ) 1700 Third Ave.. New Brighton, Pa. (Ceramic Color Sc Chemical Mfg. Co.) KOHNKEN. Donaid H. Box 437, Valley Rd.. Paterson 2, N. J. KOMAC. Thomas N. (R) Republic Steel Corp. 6100 Truscon Ave., Cleveland 23, Ohio KONOPICKY. Kamillo Forschungsinstitut der Feuerfest-Industrie Helmholtzstr. 27. Bonn, Germany KONOWITCK. Gilbert D. 2010 N. 74th Ave. Elmwood Park 33. 111. KONRAD. Howard E. (R ) 41 Brookside Ave.. Apt. 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, INC. (C. E. Leberknight) Box 3233 Pittsburgh 18. Pa. KOPPERS CO- INC. (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 NY High St., Columbus 14, Ohio KOSHUBA. Walter J. (B t) 424 Hillcrest D r- Wyoming IS, Ohio (General Electric Co.) KOWAL. Leo B. (G) Canadian Pittsburgh Industries. Ltd. 300 Blvd. St. Croix Ville St. Laurent, Que., Canada KOWALXA, Warren R. (G) Libbey-Owcr.s-Forcj Glass Co. 1701 E. Broadway, Toledo 5, Ohio KRAFT, C. W. (S) Kraftile Co.. Niles. Calif. K R A F t, Donald E. Co. A. 185th Signal 3r.. 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.) K RA FTILE CO. (C. W. Kraft) Niles. Calif. KRAMER, William Meigs (G) Adamston Flat Glass Div., Rotland Glass Co. Box 631. Clarksburg, W. Va. XRANER, Hobart M. (BFl) Bethlehem Steel Co. Bethlehem, Pa. KREGER. John M. (R) Valentine Fire Brick Co. . Div. A. P. Green Fire 3 rick Co. Woodsridge. N. J. KREHBIEL, Frederick H. (W) Pyroccr.es Inc., Pataskala, Ohio KREHBIEL, H. Orton (R) Pvrocor.es Ir.c., Pataskala, Ohio KRE1DL. E. L. (B) A. D. Little, Inc. 30 Memorial Dr., Cambridge, Mass. KREIDL. Norbert J. (GF) 40 Milford Rd.. Rochester 10, N. Y. (Bausch Sc Lomo Optical Co.) KRETSCHMAR. Ernest (G) Electro-Phos Slag Co. 101 S. Meramec Ave., Clayton 5. Mo KREUER. Albert L. (M) Orefraction, Inc.. 7423 Thomas St. Pittsburgh 8, Pa. KRIEGEL. W. Wurth (KFI) North Carolina State College Ceramic Engineering Div. Raleigh. 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) Corning Glass Works Box 544. Coming. N. Y. KROGSTIE. Lars Bernhard Fredrikstad, Norway (Norsk Teknisk Porseleniabrikk) KRONMAN. Samuel J. (W I) Carteret China Co. High S t- Carteret. N. J. . . KRULL. Alan R. (B) ' Technological Institute Library Northwestern University Evanston. III. KRUMWIEDE. John F. 406 E. Springfield Ave. Champaign. 111. KRUSON, Joseph H. (R) Box 338, Frostburg, Md. (Mexico Refractories Co.) KRYWULT, Edward Z. (W) 171 St. Joseph Ave. Long Beach 3. Calif. (Huntington Tile. Inc.) KUECHLER. Adolph (WI) 169 Congress Ave.. Providence 7. R. I. (American Emery Wheel Works) KULCSAR. Frank (B) Clevite Research Center 340 E. 103th St.. Cleveland 3. Ohio KCMINS. Charles A. (B) Interchemical Corp. 432 W. 45th St- New York 36. N. Y. R oster 9 I ' XUNDLER, Hanns H. iM ) ; Arnhotd Ceramics. Inc. : One E. 5"in 3:.. New York 22. N. Y. i KUNZMAN, Edward E. (Ml) . Ferro Corp.. 150 E. 56th S:. Cleveland 5. Ch:o : " ' RKJIAN, Charles R. (G) , Massachusetts Institute of Technology ; ' Rtn. a.030. Cambridge 39. Mass. : KURTZ. Peter. Jr. : 827 Second 3t.. Apt. B. Santa Monica. Calif. KUSHNER, 3urton A. Box 3188. Georgia Tech.. Atlanta, Ga. KYANITE M INING CORP. (Gene Dixon) Cullen, Va. KYI. Maung Y'u Box 216, Alfred, N. Y. KYOKWAI. Yogyo Ceramic Assn, of Japan 7, Shiba-Nisnikubo-Sakuragawaeho Minato-ku. Tokyo, Japan KYOXKA. Joseph C. (W I) 303 12th Ave. N.. Hopkins. Minn. (Ceramic Arts Studio) L LABANSAT, M. Jacques Socit Professionnelle Des Produits Franais De Terre Cuite 23. rue de Cronstadt. Paris NV, France LABORATORIO QUIMICO NACIONAL (Jorge Ancirar-Sordo) | Ministerio de Minas y Petroleos t Apartado 2377, Bogota. Colombia LACHMAN. Irwin M. (W JI) W.A.D.C.. Area B. Box 8908 Wright-Patterson AFB. Ohio : LACLEDE-CHRISTY CO. DIV. H. K. PO R T E R CO. l ',V. L. Fahianic) -70S Ridgewood Ave. St. Louis. Mo. LACONICH. Sixto Codofredo Porcelana Americana S. A. : San Julian y Andes Lomas de Zamora. F.C.N.G.R. Argentina i.A.DOO. Raymond B. (M) 42 Huntington Rd., Newton 33. Mass. (Consulting Engineer'1 U FO R G E . Louis H.. Jr. (W) 76a Marion Ave.. Palo Alto, Caiif. (Consulting Engineer) LAH TI. Leslie E. (G J) 110n-S N. Eaton St.. Albion. Mich. (Corning Glass Works) LAIDLER, Dougias S. 8a, Vicarage Ln. Kings Langley. Herts, England (Associated Lead Manufacturers Ltd.) LAIRD. Charles (SI) Box 462. Holly Springs. Miss. (Holly Springs Brick & Tile Co.. Inc.) LAIRD. Robert K. (E) 4507 Blue Bird Ave., Louisviile 13, Ky. (American Radiator 8t Standard Sanitary Corp.. Plumbing Div.) LaMAIRE. Robert V. (R I) Sawmill Rd., Warren Tp. Plainfield, N. J. (International Nickel Co.. Inc.) LAMAR. George B. (M ) Interchemical Corp., Albion Kaolin Div. Hephzibah. Ga. I.AMB, Hal (M) Braun Corp., 1363 S. Bonnie Beach P1. Los Angeles 54, Calif. LAMBE. C. M. (M FI) United S tes Gypsum Co. 300 W. Adams St., Chicago 6. 111. \M B ER T, Joseph M. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13. Pa. LAMBERTSON. Wingate A. (B t) Carborundum Co.. Research Lab. Niagara Falls. N. Y. Vol. .3.5, No. 10 (1956) LAMB IE. J. M. (R) Findlay Clay Products Co. Washington, Pa. LANDBACK. Charles R. (R) Carborundum Co., Refractories Div. Perth Amboy. N. J. LANDIS. Benjamin M. 131 Sixth St., Scotia, N. Y. LANE, George J. (W ) Edgar Plastic Kaolin Co. Edgar, Fia. 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 6c Metals Co. Box 865, Martinsburg, W. Va. LANG, S. M. (W ) 9718 Braddock Rd.. 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, Caiif. LANIER, William S. (R) Babcock it 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 21, Quinta Evelyn Boleita. Edo Miranda. Venezuela LAPP. Grover W. (M F) 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. Y. (Fairchild Engine Div.) I.ARKIN, Paul G. (S) 2S0 X. 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 & Wilcox Co. 16t E. 42nd St.. New York 17, N. Y. I.ASEMAN, Malcolm E. (S) 51 S. Fenton St.. Denver 14, Colo. (Robinson Brick Sc Tile Co.) LASKY, Elliott Box 847. Alfred. N. Y. LATCHFORD-MARBLE GLASS CO. (C L. Dillon) Box 71707 Los Angeles 1. Calif. LATIMER. Glen H. (R) 2613 Dogwood Ln., East Norriton Tp. Norristown, Pa. (E. J. Lavino Sc Co.) LATIMER. Horace L. (E l) 248 Qtiesiend Ave. Mount Lebanon. Pittsburgh 34, Pa. (O. Hommei Co.) LATIMER. Trent W. Ohio State University, Baker Hall Columbus 10, Ohio LATTIN. Judson M. (R) 14644 S. Edbrooke Ave., Doiton. Ill (International Harvester Co ) LAUCKNER. Julian H. J 27 A Stadium Terrace Champaign. 111. LAUGHLIN. HOM ER. CHINA CO. (J. M. Wells) Newell. W. Va. LAURIE. DOMINIC (RI) Titanium Alloy Mfg. Div., National Lead Co. Niagara Falls. N. Y. LAWLESS, Emmett A.. Jr. (S) Alton Brick Co., 3ox 394. Alton. Ill LAWRENCE. Howard O. (W ) Industrial Ceramics Ltd. Cooksviile. Ont.. Canada LAWRENCE. Ralph V. (R I) 926 Kenneth Rd.. Glendale 2, Calif. (Gladding, McBean 8t Co.) - LAWRENCE. Waiter F., Jr. (W I) 153 Morningside 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 Feldspar & Minerals) LAXTON. Wiihur (G) Hazel-Atlas Glass Co.. 126 Market St. Zanesville. Ohio LAYNE. Fred A. (W) Louthnn Mfg. Co. East Liverpool. Ohio LAYTON. Donald R. (GI) Brockwav Glass Co.. Brockway. Fa. LAZARKIS. Prier J. (W) 37 Fifth Ave.. Watertown. Mass. (Rayhenn Manufacturing Co.) LEAD INDUSTRIES ASSOCIATION (Robert L. Ziegfeld) 60 E. 42nd St. New York 17. X. Y. LEAKE. Fred. Jr. (M) Evans Lead Corp., Box 1467 Charleston 25. W. Va. LEANDER. Karl Johan Langgat. 19. Hogan as. Sweden (Hoganas-3illesholms AB) LEAVER. Stanley (R) 1202 Niagara St., Niagara Falls. N. Y. (Carborundum Co.) LE BELL, Rolf Casimir Pargas Kaikbergs Aktieboiag ABO Kakeifabrik Slottsgatan 52, ABO, -Finland ` LEBER KNIGHT. C. E. (GF) Kopp Glass. Inc. Box 8255, Pittsburgh 18, Pa. LeBLANC. John RBox 16. Alfred Sta., Alfred. N. Y. LEDDY. Robert M. (S I) Box 128. Hammonton, N. J. (Alliance d a y Product Co.) LEE CLAY PRODUCTS C O - IN C (Martin S. Bowne) Clearfield. Ky. LEE, Don W. 20 Westgate. Cambridge 39, Mass. LEE. Harley C. (RF) Basic, Inc.. 345 Hanna Bldg. Cleveland 15, Ohio LEE. James A. (S) Southern Brick & Tile Mfrs. Assn 1328 Candler Bldg., Atlanta 3. Ga LEE. P. William (BI) 205 Elmwood Blvd., York. Pa. (D entist's Supply Co. of New York) R oster 63 ECH , L. G. H. & G. Th.wine, Ltd. Victoria Tile Works Holmer, Hereford, England EED S. Donald H. i.RJI) 2023 Westfield Terr., Bethlehem. Pa. .1 Ktrhc'.heheAm. Steel (R) Co.) Avon Dr.. Pittsburgh 16. Pa (Carborundum Co.) .EFFGRGc. j. W. (3 ) Monsanto Chemical Co. Everett Station. Boston 4S>. Mass .EFO R T, Henry G., Jr. (I) 411 Fairlawn Dr., Urbana, 111 .E HERON, Harold Etablissements Porcher Usines de Revin, Ardennes, France -E l BIG, Edward C. (R ) _ Corning Glass Works, Corning, N. Y. -E IB SO N , J. S. (W I) Insulator Dept., General Electric Co. S. Charles it Cromwell Sts. Baltimore 3, Md. LEIPOLD. Martin H.. Jr. 95 E. 12th Ave-, Columbus 10. Ohio L E I S8E3 4Ra. Craig F. 30th N. W., Seattle 7. Wash. LEISEY . William B. (S) 613 Eltn Ave., Muhlenberg Park Reading, Pa. (Manu-Mine Research it Development Co.) LEITTEN , Carl F. (R) 50 Hawkins Ave., Hamburg, N. Y. (Electro Refractories & Abrasives Corp.) LELAND. John A. (E) 469 Arbramar Ave. Pacinc Palisades, Calif. (Douglas A ircraft Co.) LEM MERM AN. Paul C. (R ) ^ E. I. du Pont de Nemours & Co., Inc. Grastelli Chemicals Dept, fational City Bank Bldg, ileveiand 14, Ohio LaMUNYON. James S. fH> Tappan Stove Co.. 250 Wayne St. Mansfield. Ohio LENCRNER. Theodore (D F) 3153 Beeler St., Pittsburgh 17. Pa. (Vitro Manufacturing Co.) LEN N ON . A. G. (W ) Canadian potteries Ltd. 360 31vd. du Sminaire St. Johns. Que.. Canada LENNON. John W. (W I) Batteile Memorial Institute 505 King Ave., Columbus, Ohio LENTZ, Clarence J. (R) Quebec Iron & Titanium Corp Box 40, Sorei. Que., Canada LEONARD, Jean (M) 96-24 Corona Ave.. Corona 68, N. Y. (Jean Leonard Ceramics) LEOPOLD. Jean H. Leopold & Cie. Pfaffenhoffen, (Bas-Rin), France LEO-W OLF. 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 Beechmout Dr. Dearborn Hills, Mich. (Great Lakes Steel Corp.) LESTER. Frank P. (W) 75 Mercer Ave., Hartsdale, N. Y. (Consulting Engineer) Vol. 35. N o. 10 (1956) LESTER, Ronald H. (W JIi 3811 Garrison 31vd., Baltimore 15, Md. (General Electric Co.) LESTER, W. Ronald (GF) Liberty Glass Co. Sapulpa, Okla. LESZL, Matthias "Sraalteria e Metailurgica Vencta" Bassano del Grappa, Italy LETORT, Marc Yves Centre National d'Etudes et Recherches Ceramiqucs 3 Avenue Paul Doumer Paris 16, France LETTER, Eugene C. (BJ) Bausch it Lomb Optical Co. Dept. G-62, 5C-3, Rochester, N. Y. LEVENGOOD, William C. (G) 4473--289th St., Toledo, Ohio (Libbey-Owens-Ford Glass Co.) LEVI, Ormonde S. (G) Verd-A-Ray Corp. 61S Front St., Toledo 5, Ohio LEVIN, Ernest M. (B) National Bureau of Standards Div. 9.7, Washington 25, D. C. LEVIN, I. (M) L 4 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, III. LEWIS, Albert D. (G) Kimble Glass Co., Vineland, N. J. LEVY. Raymond H. (B) S501 Lynview Ave., Baltimore 13, Md. (Glenn L. Martin Co.) LEWIS. George L. (B) E. I. du Pont de Nemours & Co.. Inc. Experimental Sta.. Wilmington, Del. LEWIS. Gordon E. (SI) G'.en-Gery Shaie Brick Corp. Box 86, Shiliiagton, Pa. LEWIS, J. H. (G) Blue Ridge Glass Corp. Kingsport, Tenn. LEWIS. J. M. (W) Abingdon Potteries. Inc. 801 N. Main St.. Abingdon, 111. LEWIS. William C. (GBig Flats. N. Y. (Coming Glass Works) LEWIS. William N. (G) I-T-E Circuit 3rcaker Co. 601 E. Erie Ave.. Philadelphia 34, Pa. LIBBEY-OWENS-FORD GLASS CO. (George B. Watkins) 1701 E. Broadway Toledo 5. Ohio LIBERATORE. Laurence C. (G) Taylor Instrument Co. 95 Ames St.. Rochester 1, N. Y. LIEDER. Phillip H. (R) 2600 Dogwood Lane. Norristown. Pa. (E. J. Lavino 4 Co.) LIEDERBACH. William H. (BI) 202 Prospect Are.. Pewaukee, Wise. (Globe-Union Inc.) LIGON. Elmer R. (S I) W. S. Dickey Clay Mfg. Co. Box 402. Pittsburg, Kans. LILLIE, Howard R. (GF) 191 Delevan A re- Coming. N. Y. (Coming Glass W orks) LIM. Eung K. Seoul National University College of Engr., Seoul, Korea LIM. Richard H. Y. Box t039. Alfred. N. Y. LIM. Yock Lio 915 Oakland, Ann Arbor, Mich. LIMES. Robe W. (R I) Allegheny Lndloa Steel Corp. Research Labs., Brackenridge, Pa. LIN. Francis C. M. (G) Hazel-Atlas Glass Co. Washington, Pa. LINDENTHAL. John W. (G) Ohio Stale L'niversity Engineering Experiment Sta. Columbus 10, Ohio LINDER. Cyrii S. (E) 1139 park S:.. Tarentum, Pa, (Pittsburgh Plate Glass Co.) LINDQUIST. C. Alar., Jr. (.BI) 123 Grandview Ave., Conneaut, Ohio (Astatic Carp.) LIND ROTH. Stig A. Sver.ska Accumulator A3. Jungner Oskarshamr.. Sweden LINDSAY^ Carey E. (.RI) Niies Fire Brick Co. 165 E. Park Ave., Niles. Ohio LINDSAY. J. Gordon (3 ) . Aluminium Labs. Ltd. Ar-.ica. Que., Canada LINKHORX, William H. (W) 423 S. Western Ave.. Kokomo, Ir.d. (American Radiator & Standard Sar.itarv Corp.) L IN SEIS, Max Selb/ 3ay Gerhard-Hauptmannweg 9, Germany LINTZ, E. H. (W FI) 42 Heiskeil Ave., Wheeling, W. Va. (Wheeling Tiie Co.) LINW COD, Sidney H. (W) Stacxpoie Carbon Co., St. Marys, Pa. LINZ, Arthur (E) 551 Fifth Ave., New York 17, N. Y. (Consultant) LIPMAX, B. David Gen. Dei., Alfred. N. Y. LITEX , Alexander F. Box 382. Salem. Mass. LITH IU M CORP. OF AMERICA, INC. (W alter M. Fenton) 2S60 Rand Tower Minneapolis 2, Minn. LITTLE, John M. (S) 120 5. 2Sth Ave., Hattiesburg, Miss. (Hattiesburg Brick Co.) LITTLETON . Joseph C. (G) _ 251 Deievan Ave.. Coming, N. Y. (Coming Glass Works) LITTLETON. J. T. (Honorary, GF) _ Coming Glass Works. Coming. N. Y. LIVINGSTON. Charles Q. (R) Armstrong Cork Co., Lancaster, Pa. LIVOVICH. Andrew F. (R) 337 N. Virginia Ave.. Hobart. Ind. (Universal Atlas Cement Co.) L <4 L MANUFACTURING CO. ;L Levin; 136 Eighth St. Upland. Chester, pa. CLOY'D. Katherine (R) Kaiser Aluminum & Chemical Corp. 1924 Broadway, Oakland, Calif. LO, Wing-Cheuk 10 Union St., New Brunswick. N. J. LO BAUGH. Frank E. (RI) 1052 Sherman Ave., Plainfield, N. J. (Universal Atlas Cement Co.) LOCHRIDGE. James F. (E) Ferro Enamel de Mexico. S. A. . 4S0 Oriente 171, Mexico T4, D. F. LOCKE. Ralph S. (B) Diamond Springs Lime Co. Box 409, Diamond Springs, Calif. LOGAN CLAY PRODUCTS CO. (Barton A. Holl) Box 698 Logas. Ohio LOXDEREE. Joseph W.. Jr. (B) 3918 W arner 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 Pacinc Highway San Diego 12, Calif. R oster 65 LONG, Luther L. (G) Owens-Coming Fiberglas Corp. Case Ave.. Newark, Ohio LONG, Reben. Sr. (E) American Porcelain Enamel Co. 1235 Keating Ave. Muskegon 36, Mich. pNG. Robert R. (W ) National Tile i Mfg. Co. 1200 E. 26tk St., Anderson, Ind. LONG, Russel! E. (R I) Brush Beryllium Co. 4301 Perkins Ave., Cleveland 3, Ohio LONGENECKER, Robert J. (M) 46 James Rd,, Broomall, Pa. (Foote Mineral Co.) LONGFRITZ, Robert K. (RI) Brighton Brick Co. Box 256. New Brighton, Pa. LONGINO. Ted E. (S) Henderson Clay Products Henderson, Texas LONGWELL. 3urton (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. LOREV. Frederick D. (GI) 41 Meadow Brook Apt., Coming, N. Y. (Coming Glass Works) LOREY. G. Edwin Dept, ct Ceramic Engineering School of Mines & Metallurgy Rolla, Mo. LOSCO, Alfred G. (3) 27 Paterson Ave., Paterson, N. J. (K earfott Co., Inc.) LOUDEN, R. H. (W I) McGean Chemical Co. Midland Bldg., 101 Prospect Ave. N. \V. Cleveland 15, Ohio LOUGHRIDGE. Frederick A. (G) 52 Norwood Ave., Manchester, Mass. tSyivaoia Electric Products. Inc.) tpUTKAN M ANUFACTURING CO. ' (C. W. Gerster) 2000 Harvey Ave. East Liverpool, Ohio LOVE, L. G. (G) National Lime 3c Stone Co. First National Bldg., Findlay, Ohio LOVELAND. Edward W. (G) 504 75th St.. North Bergen, N. J. (Fran-Stef Manufacturing Co.) LOVELL, George H. B. Silwood Ceramics. Box 152 Bergviei, Johannesburg, South Africa LOVENBACH. J. Giaceries de Saint Roch S. A. 50, rue du Luxembourg Brussels. Beigium 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 rC. (R I) 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. Sreckearidge St., Mexico, Mo. L O W E S. 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. (WI Jackson Tile Manufacturing Co. Box 2006, Jackson, Miss. LUCAS, Joseph M. (W) 1431 Broad 3lvd. Cuyahoga Falls, Ohio (U. S. Stoneware Co.I LUCEK, John R. iMJ) 51 Bushey Rd,, Pittsfield, Mass. (General Electric Co.l LUCIDO, Peter J. 1518 Central, Lafayette, Ind. LUDOWICI, Johann W. Carl Ludowici K.a.A. Co. Jockgrim Rheinpialz, West-Germanv LUDWIG, David W. (GI) 107 Penn View Dr.. Monroeville. Pa. (Pittsburgh Plate Glass Co.) LUDWIG, Urbar. W. (G) 2835 Little York Rd., Dayton 4, Ohio (Univis Lens) LUEDERS, Roland (M) 3241 Bradford Rd. Cleveland Heights 18. Ohio (Ferro Corp.) LUHRS, Millen E. (G) Libbey-Owena-rord Glass Co. 1701 E. Broadway, Toledo, Ohio LUKS, Daniel W. (W I) Star Porcelain Co. Muirhead Ave., Trenton 9, N. J. LULL. Stanley E. (RI) 83-8 Park Ave., Worcester 5, Mass. (Bay State Abrasive Products Co.) LUNAK, 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. (WI 426 E. State St., Alliance, Ohio (Coioniai Insulator Co.) LUND. Randolph A. 1717 W. 105th St.. Chicago 43, III. LUNDE. Marvin 4241 Union Bav Lr.,, Seattle. Wash. LUSHER. Geraid H. (R) Norton Co., 5903 Pacific Blvd. Huntington Park. Caiif. LYLE. Aaron X. (GF) 21 Cumberland Rd. West Hartford 7, Conn. (Hanford Empire Co.. Div. Etnhart Mfg. Co.) LYMAN. Donald R. Box 787. Alfred. N. Y. LYNCH, Eugene D. (W) University of Illinois Dept, of Ceramic Engineering 204 Ceramics Bldg., Urbana, III. LYNCH, James F. (R) Battelle 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. (Balt 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. (BI) 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, Ohio (Mosaic Tile Co.) Me McADOO, D. ?. (W) J. M. Haber Corp. 100 Park Ave., New York, N. Y. McALLISTER, Christopher (GI) Box 231, Clarksburg, W. Va. (Pittsburgh Plate Glass Co.) McALPINE. Kenneth B. (G) 1201 Union Ave., Brackenridge, Pa. (Pittsburgh Plate Glass Co.) McASKlLL, James I. (W ) 31! King St. W. Kingston. Ont., Canada (Frontenac Floor & Wall Tile Co. Ltd.) McAULSY. James W. (G) 2334 Sherwood Rd.. Toledo, Ohio (Libbey-Owens-Ford Glass Co.) McBURXEY. John W. <3F) 1543 N, Falkland Ln. Silver Spring. Md. t Consultant! Mc3URNEY, William C. (D) R. R. 5. Eastbrook 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 McCAXN. 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. i'W ) 1408 Delaware Ave.. New Castle, Pa. ( L'niversai-Rur.aie Coro.) McCLAVE. James W. fS I) 3ox 508. Toronto. Ohio fPeeriess C ay Corp.) McCl e l l a n d . Roland h . ( w n Globe-Union Inc.. Centralab Div. 900 E. Keefe Ave.. Milwaukee, Wise. McCLURE. Clifton M. (R J) _ 2415 Edgewood Ave., Anderson, S. v.. McCLURG. John (G) Oglebay Norton k Co. 1200 Hanna Bldg. Cleveland 15, Ohio McCOLLOM, Perry C. (R I) American Refractories 4 Crucible Corp.. North Haven, Conn. McCONAUGKA. Wayne H. (S) Natco Corp., Box 456 East Canton. Ohio McCo n n e l l , g . f . (W ) Mosaic Tile Co., Zanesville, Ohio McCORMICX. John M. (GL - - 1827 Richards Rd., Toledo 7, Ohio McCORMICK. Stewart W. (RI) Corhart Refractories Co. 1600 W. Lee St.. Louisville. Ky. McCOY. Nelson (W) Nelson McCoy Pottery Co. Roseville. Ohio McCOY. 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. McCUXE. Samuel E. (R) L'nited States Steel Corp. Gary Works Res. Lab. 991, Gary, Ind. McDANEL. Donald W. (W ) McDanei Refractory Porcelain Co. 510 Ninth Ave.. Beaver Fails, Pa. R oster 67 McDANEL. Melvin W. (\V) R.R. 2, Eastvale Rd. 3caver Fails, Pa. (McDanel Refractory Porcelain Co.) McDANEL. Sumner W. R.R. 2, Beaver Falls. Pa. McDa n i e l , l . l . <p.) Phelps Dodge Corp. Morer.ci 3 ranch. Morcr.ci. Aria. McDERMOTT. James J.. Jr. (G) 136 William S:.. New York 38. S'. Y. McDo n a l d , c . h . <s * West Bros. Brick Co. 6500 Sheriff Rd., N. E. Washington 37, D. C. McDo n a l d , e . f . c e d Ingram-Richardson Mfg. Co. Beaver Falls. Pa. McDo n a l d , Howard A. (R) 13203 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 3 ridge, Bermuda McDOWALL. Ian C. New Zealand Pottery it Ceramic Research Assn., Inc. Private 3ag, Lower H utt. New Zealand MeDOW'ELL, J. Spotts (R F ) 4716 Eayard St., Pittsburgh 13, Pa. (Harbison-W alker Refractories Co.) McDOW ELL. Samuel J. (3 F I) 52 Elm Ave., Metuchen, N. J. (American Lava Corp.) McELROY, R. H. (MI) International Clay Machinery Co. 1145 Bolancer Ave.. Dayton 1. Ohio McEVOY'. Robert J. CRI) 2234 Berdan. Toledo 13, Ohio <Owens-Coming Fibergias Corp.) McFARLAND. James E. (E ) 14025 Greenoay Ave.. Chicago 33, 111. ''Inland Steel Co.) McCEAN. Ralph L. fE l Midland Bldg., 101 Prospect Ave.. X.W. Cleveiar.d 15. Ohio (McGean Chemical Co.) McGEE. Thomas D. Iowa State College Ceramic Engineering Dept., Ames. Iowa McGILL. William M. (B) Virginia Division of Geology 3ox 3667, University Station Charlottesville. Va. McGi n n i s , r . a . ( wo American Lava Corp. Cherokee 31vd. & Mfgrs. Rd. Chattanooga 5. Tenn. McGOHAN, G. William fE) Arraeo Steel Corp.. Middletown, Ohio M cGOLPIN. William C. (S) Rm. 403. 57 Bloor St., W. Toronto 5. Ont.. Canada (N atco Clay Products. Ltd.) McGRAW. Delford A. (G) 4117 Graceway. Toledo 6, Ohio (Owens-Illinois) McGREGOR. Frederick B. (M) Great Lakes Foundry Sand Co. 720 United Artists Bldg. Detroit 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 cINTOSH . C. M. (W ) Radio Materials Corp. 1708 W. Belmont Ave., Chicago 13, 111. M cINTOSH. Harold W. (G) American Window Glass Co. Fanners Bank Bldg., 20th Floor Pittsburgh 22. Pa. M cINTOSH. William A. (S) W est Virginia Pulp & Paper Co Polychemicals Div. Charleston, S. C. VOL. 35, No. 10 (1956) McIn t y r e , g . h . (E f d Ferro Corp. 4150 E. 56th St., Cleveland 5. Ohio McKAIG. W. Wallace (R) Cumberland Steel Co. Box 28. Cumberland, Md. McKANE. John W. (R) 257 Chesterfield Ave. Glen Ellyn, 111. (Foremost Foundry Supply Co.) McKEAND, Irvin J. (W) Minneapoiis-Honeyweil Regulator Co. Research Center 500 Washington Ave. S. Hopkins, Minn. McKEE, William D,, Jr. (B) 64 W. Tulane Rd., Columbus 2, Ohio (Battelle Memorial Institute) McKEEN, Richard D. (W I) Box 625, Haverhill, Mass. (Western Electric Co.) McKEXDRICK, Alexander Glenooig Union Fire Clay Co., Ltd. Glenboig, Lanarkshire, Scotland McKEOWX, J. Duncan (R) 3ox 137 Burnet Woods Station Cincinnati 20, Ohio (Carborundum Co.) McKEOWN. Thomas H. (M) Box 31, Metuchen. N. J. (E. I. du Pont de Nemours & Co., Inc.) McKI3BEN, Burt H. (E) Mallory-Sharon Titanium Corp. Niles, Ohio McKINNIE, J. R. (R) Ideal Chemical Products, Inc. 3813 Hoke Ave., Culver City. Calif McKINNIS. Charles L. (GI) Owens-Coming Fibergias Corp. Glass Res. Lab.. Newark, Ohio McKULLA. George \V,, Jr. 4711 17th X. E., Seattle 5. Wash. McLACHLAN. Eugene K. (R) 2280 Sunshine, Johnstown, ?a. (Bethlehem Steel Co.) McLAIN FIR E BRICK DIV.. H. K. PORTER CO_ IN C (Lawson E. Mason) Clark Ave., Wellsville. Ohio McLANE. James P. (M) Diamond Pottery Corp. 0--56 China St.. Crooksviile. Ohio McLa r e n . Henry D. (E) Ferro Enamels (Canada) Ltd. Box 37, Oakville, Ont., Canada McLa r e n , John (M) Box 75, East Liverpool. Ohio (Bell Research Labs.) McLa u g h l i n , John l . (E) 564 S. Craig PL. Lombard, III. (Allied Porceneil Inc.) McLa u g h l i n , Joseph k . (w d Hyalyn Porcelain, Inc. Hickory. N. C. McLa u g h l in , wuiiam h . (R) Alsey 3rick 3t Tile Co.. Alsey, 111. McMAHON. John F. (XFI) Alfred. N. Y. (State University of New York College of Ceramics, at Alfred Univ.) McMAHON. John F.f Jr. (GJ) 645 S. Cannon Ave., Lansdale, Pa. McMASTER. Harold A. (G) Permaglass. Inc- Box 195, Sta_ A. Toledo 5, Ohio ' McMULLF.N, John C (R) 9325 Rivershore Dr. Niagara Falls, N. Y. (Carborundum Co.) McMURDIE, Howard F. (BF) National Bureau of Standards Washington 25, D. C. McMURTRY. Carl H. (RJI) 72 Maple Ave., Wellsville. N. Y. (State University o( New York. College of Ceramics) McN a m a r a , e . p . (W Fi) 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 Lochland Dr., 3uffalo 2S, N. Y. (Electro Refractories & Abrasives Corp.) . McXAUGHTON, Ronald R. (B) Central Technical Library Consolidated Mining & Smelting Co. oi Canada. Ltd.. Trail, B. C., Canada McQCARRIE. Malcolm C. (B) 105 E. Xittany 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, X. Y. McVAY, T. X. (BFI) 10 Oakwood Court, Tuscaloosa, Ala. (U. S. 3ureau 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. (ED Pfaudler Co. (Elyria Div.) Taylor St., Elyria, Ohio M MaeALPIXE. William M. (G) 357 E. Main St., Somerville. X. J. (Johns-Manville Research Laboratory) MacDONALD, James E. (R) MeFeeiy 3rick Div. General Refractories Co., Latrobe. Pa. MacDON'ALD. Raymond S. (G) Coming Glass Works, Coming. X. Y. MacDONALD. R. W. (W I) R.R. 11. 3ox 661. San Antonio. Texas (Consulting Engineer) MACER. W. E. (M) Carborundum Co., Globar Div. Niagara Falls. X. Y". MacGIBBOX, Richard John G. Stein 8c Co.. Ltd. Manuel Works Nr. Linlithgow, Scotland MACKLAN. G. R. (G) Owens-Coming Fibergias Corp. Newark, Ohio MacIXTYRE. Donald J. (W ) R.R., Piffard. N. Y. (Lapp Insulator Co., Inc.) MACKASEK. Edward (EF) 1722 19th St.. N. W.. Apt. 702 Washington 9, D. C. (Porcelain Enamel Institute) ' MACKENZIE. James United Steel Companies Ltd. Research & Development Dept. Swinden House, Moorgate Rotherham, England MacKENZIE, James T. (R) 4300 Ninth Court 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 Demerara Bauxite Co., Ltd. Mackenzie, British Guiana MacRAE, John (G) Fibergias Canada Ltd. Box 309, Guelph, Ont., Canada R oster 69 MAC ZURA. George ( RJ ) MARCH, Joseph W. (S) J8I5 Highland Rd. Nova Scor.a Technical College East 5:. Louis, 111. Halifax, N. S.. Canada (Alcoa Research Labs.) MARCUS, Leon (BI) MADDEN. Robert C. (B) 1527 Coventry Rd.. Cleveland, Ohio 315 Pim Sr. (Horizons. Ir.c.) Saul: Ste. Marie, On:., Canada MARCYX, Chester A. (E l ; (Algoma Steel Corp., Ltd.) 2302 S. Ker.smgion Ave. MADDOCK, A. M. (W ) Westchester. 111. R. R., Washington Crossing, N. J. (Chicago Vitreous Corp.i MADSEN. Leif Egii MARGOL1S. David iR) Box 4208. Sar.dakervn 109/111 39 Glenwood Ave.. Netv Rochelle. N. Y. Oslo, Norway (Flsh-Schurman Corp.) (A /S Den Norske Slipeskivefabr.) 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) American Radiator & Standard Sanitary Corp., Box 907 1592 Love Rd., Grand Island, N. Y. (Carborundum Co.) MARLETT. Charles J. (M) Trenton 5. N. J. One Lloyd Ave., Latrobe, Pa. MAGNUSON. V. E. (M) (Kennametal, Inc.) Western Feldspar Milling Co. MARQUIS. John E. (W ) Box 671, Salida, Colo. Pemco Corp., Res. 3t Dev. Lab. MAGOR. James K. (E ) United States Steel Corp. 2532 Greenmount Ave. Baltimore 18, Md. Applied Res. Lab.. Monroeville. Pa. MARSHALL. Darwin (B) MAGUIRE, Edward A.. Jr. Electro Metallurgical Co. 1335 E. Price S:.. Philadelphia 38, Pa. MAGUIRE. Samuel G., Jr. (B) Metals Research Laos. Box 580. Niagara Falls, N. Y. United Clay Mines Corp. MARSHALL, Paul A. (G) 101 Oakland St., Trenton 6, N. J. 1201 Cherry St., Brockway, Pa. M AKIER, Lois W. (D ) (Brockway Glass Co., Inc.) 4535 H arding Blvd. MARTIN. Albert E. (M) Baton Rouge 7, La. Almar Specialty Machines Ltd. (Southwestern Louisiana Institute) Maple, Or.t., Canada MAHONEY. Frank B. (E ) MARTIN; Francis W. (G) Richmond Radiator Co. 101 Hornby Dr., Painted Post, X. Y. Box 111. Metuchen, N. J. (Corning Glass Works) MAJESXE, Joseph (G) MARTIN, Frank B. (R) T. C. Wheaton Co.. Millville, N. J. MALCOLM. Richard B. (E) E. J. Lavino 4 Co. C. KommeJ Co. Box 29. Norristown. Pa. Box 475, Pittsburgh 50. Pa. MARTIN, H. C. (R) MALM. Arthur T. (RI) Caroorundum Co. 333 Beverly Rd., Worcester 5, Mass. Buffalo Ave., Niagara Falls, N. Y. (Norton Co.) MARTIN, James X. (M) MALOCTIAN. Maricay H. ( B> 1063 Helen Ave., Lancaster, Pa. 405 Mohegan Ave.. New London. Conn. (Posey Iron Works, Ir.c.) (U .S.N. Underwater Sound Lab.) MARTIN, John R.. Jr. (W) MALVERN BRICK & T IL E CO. Monongabela Power Co. (George 3. Eyerly) 920 Charles St.. Wellsburg, W. Va. Box 415. Malvern. Ark. MARTIN, Leonard A. (W) MALYSIAK. Chester <G) 1027 Hickory, Perrysburg. Ohio Martin Ceramic Supply Co. 8901 Rainier Ave., Seattle 3, Wash. (Owens- Illinois ) MARTIN, Ralph H. (W I) MANDEL, Charles J. (W I) W illette Corp. of New Jersey Vernon Kilns 2310 E. 52nd St.. Los Angeles 38. Calif. Codwise Ave. 3c Reed St. MARTIN, Wesley G. (EF) New Brunswick, N. J. 054 N. Kent Ave. MANDLS. Richard M. (G) Rare Earths, Inc. Milwaukee 17, Wise. (A. O. Smith Corp.) Box 488, Pompton Plains, N. J. MARTINO, Paul D. (SJ) MANN. George H. (G) Lake Salubria, Bath, N. Y. Cannelton Sewer Pipe Co. Canneiton. Ind. (Corning Glass Works) MARTINSEN. Rodney E. (M) MANNING. R. Douglas (D) Timken Roller 3earing Co. H arker Pottery Co. 1335 Dueber Ave.. S. W. E ast Liverpool, Ohio Canton 6, Ohio MANOUSEK, Miloslav Delnicka 27 MARTZ, Joseph A. (R) 335 Riverside Ave., Wellsville, Ohio P raha V II, Chechoslovakia (McLain Fire Brick Co., MANRING, Jack C. (E JI) Drv. of H. X. Porter Co., Inc.) R JU 1, South Charleston, Ohio (Westinghouse Electric Corp.) MANRING. William H. (G) Calumite Co. Box 151, Hamilton, Ohio MARTZ. Karl (D) Indiana University Art Center Bloomington, Ind. MARVIN. Charles G. Box 787, Alfred. N. Y. MANSFIELD SANITARY POTTERY. INC. (Perry E. Draper) Pettyavilie. Ohio MANUFACTURERS EQUIPMENT CO. (J. R. Schroll), 218 Madeira Ave. Dayton 4, Ohio MANZ, Oscar E. (B) Box 516, University Station Grand Forks, N. D. (University of North Dakota) MARWAHA. Xidar N. Born 8t Co.. Ltd. Refractory & Ceramic Works Box 13. Jabalpur 1, India MARX Le Roy J. (S) Denver Terra Cotta Co. 135 Tejon St., Denver 23, Colo. MARYLAND GLASS CORP. (L. C. Roche) 2147 Wicomico St. Baltimore 30. Md. VOL. 35, No. 10 (19561 MAS KILL. William Webb Ccrcctt. Ltd. Coaiboumhill Glass Works Stourbridge, Worcester, England MASON. Cecil R.. Jr. 879 Courtenay Dr., X. E. Atlanta 5. Ga. MASON CITY BRICK & T IL E CO. i.C. F. Garland I Mason City, Iowa M.ASON. Frank ( \V) Colonial Insulator Co. 945 Gran: S:., Akron 11, Ohio MASON. Lawson E. (R) McLain Fire 3rick Div., H. X. Porter Co., Inc. Clark Ave.. Wellsville, Ohio MASSENGALE. Gordon B. (R I) 553 Audubon Ave., Pittsburgh 34, Pa. (Harbison-Walker Refractories Co.) MASSON. R. Porieilar.fabrik Laugenthal A. G. Langenthal, Switzerland MATCHULAT, John G. (R) Buffalo Rd., R.R. 2 East Aurora, N. Y. (Electro Refractories & Abrasives Corp.) MATEJCZYK. John ?. (E) 7506 Trevanion Ave., Pittsburgh 13. Pa. (O. Homme! Co.) M ATERIALI P.EFRATTARI SOC. p.A ZION I (J. Charles M athon) Via Elia. Lombardini 13 Milano 744. Italy M ATHEXY, Richard E. (S) R.R. 7. Box 307, Birmingham. Ala. (Natco Corp.) MATHER, Mrs.JCatharine (B) Waterways experiment Sta. Drawer 2131, Jackson, Miss. M A THIA SEN. O. E. (S) Federal Seaboard Terra Cotta Corp. 3ox 301, Perth Amboy, N. J. MATH1ESON. George W. (G) 2253 Castlewood Dr., Toledo 13, Ohio (Kimble Glass Co.) M A THIESO N. Roblin M. (R) Aluminium Limited Sales, Inc. 630 Fifth Ave.. New York 20, N. Y. M A THIEU . Louis A. Parra Mar.tois. 11 C um in de Rcr.de Le Vesinet (S&O) France MATHON, Charles Material! Refrattari Soc. p-Aaioni Via Ella Lombardini 13 Milano 744, Italy MATHON, J. Charles Material! Refrattari Soc. p.Axiom Via Elia Lombardini 13 Milano 744, Italy MATSON, Frederick R. (G I) 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 TTISON . William F., Jr. (G I) R JL 3, Lawson Dr., Madison. Conn. (Libbey-Owens-Ford Glass Co.) MAU, K. T. (S) Gaspro, Box 2454, Honolulu, Hawaii M A U PIN . Addison (R I) 721 Yale Ave., Terrace Park, Ohio (Charles Taylor Sons Co.) MAURER. James A. (E) 5519 N, Lake Dr., Milwaukee 11, Wise. MAURER, Robert D. (G) Corning Glass Works, Corning, N. Y. MAUSER. H. W. Spoorsingel 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. {Ri Standard Ultramarine & Color Co. Huntington IS. W. Va. MAYES. Waiter S. (W ) Mayer China Co. Box 561, Beaver Falls, Pa. lY FiE L D . Manville J. (W I) 1327 Auburndaie Ave. Chattanooga 5, Tena. (American Uava Corp.) MAYNARD, Fred A. (M ) 545 E. 250th, Euclid, Ohio (Harshaw Chemical Co.) MAYNARD. Frederick H. (G) Corning Glass Works 1 Jackson St., Wellsboro, Pa. MAYS, George A. (S) Box 68, Niles. Calif. (California Pottery Co.) MEDERT, W arren C. (G I) 5520 Melvin Dr., Toledo 14, Ohio (Owens-Illinois) MEEKA. Edward (SI) Metropolitan 3rick. Inc. Box 27, East Palestine. Ohio MEGLES. John E., Jr. (G) 7 Washington St., Box 148 Cokeburg, Pa. (Coming Glass Works) MEID, William J. (M) 205 Elm St., Glenview, III. (Lindberg Engineering Co.) MEILING, Gerald S. 1123 Lorraine Dr. Salt Lake City, LT:ah MEINKEN. Robert H. (B) 29 Myrtle Ave. North Plainneid. N. J. (Bell Telephone Labs.) M EIRESONNE. A rthur C. (G) 700 Village D r,, Columbus 14, Ohio (Kimble Glass Co.) MEJIA. Lorenzo (M) Ca.ombia Brewers Industries, Inc. SO Broad St.. New York 4, N. Y. ELOY. C. L. (R I) Res. Dept.. R n . A406 3ethlehetn Steei Co., Bethlehem. Pa. MENG. Edwin R. (R) National Carbon Co. Box 6087. C.eveiar.d 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. 5246 Lambeth Circle, Doraville, Ga. MERCK. Walter J. (R l) 25 Addison Dr., Short Hills, N. J. (M. W. Kellogg Co.) MEREDITH. Edward J. (R) Box 1555, Birmingham 1, Ala. (Universal Atlas Cement Co.) M ERED ITH . Neil F. (R I) Box 28IG. R.R. 2, Tiffin. Ohio (Basic. Inc.) M ER IW ETH ER, 3. Corbin (W ) Deena Products Co.. Arlington, Ky. M ERLINI. Ing. Francesco Colonnata. Florence. Italy MERRIAM. Jack G. (R I) 727 N. Wildwood. Mundelein, III. (Titanium Alloy Mfg. Div., National Lead Co.) MERR IMA N, Seth G. (G) 2722 Lincolnshire Blvd.. Toledo 6, Ohio (Owens-Illinois, Kimble Div.) M ERRITT. Clarence W. (W FI) Box 464. Alfred, N. Y. (State University of New York College of Ceramics, at Alfred Univ.) MERRITT, Lester M. (X I) 654 Wilson Ave.. Columbus 5, Ohio (Industrial Commission of Ohio) Vol. 35, No. 10 (1956) MERRY. E. B,, Jr.. (SI) Merry Bros. Brick 5c Tile Co. 415 Masonic Bldg., Augusta, Ga. MERWIN, Byron W. (W) Parkway Rd., R. R. 2 East Liverpool, Ohio (Hall China Co i MERZ, Kenneth M. 256 Upson Ln., New Brunswick, N. J. MESSIMER, Laverne A. (GI) Holophane Co.. Newark. Ohio METAL 4 THERMIT CORP. (George C. Betz) 100 Park Ave. New York 17, X. Y. METZ. G. F. (M) 816 Cypress Rd., Vero Beach. Fla. (Consulting Engineer) METZ. Gilben F,, Jr. 1203 State St.. Rolla. Mo. METZGER. A. J. (RI) 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. Wiiliam P. W'right Air Development Center Area B, Wright-Fatterson A r B. Ohio MEXICO REFRACTORIES CO. (C. A. Smith) Better Refractories Bldg. Mexico, Mo. MEYER, George W. (G) Glenshaw Glass Co., Inc. Glenshaw. Pa. MEYER. G. Robert (G) 529 N. Imboden St., Apt 302 Alexandria, Va. ( Libbey-Owens-Ford Glass Co.) MEYER. L. S. (S) Hydraulic-Press Brick Co. 705 Olive St., St. Louis 1, Mo. MEYER. William W. (W) R. R. 1. Box 622, A.nnandale. Va. (U. S. Tariff Commission) MEYERHOFER, E. A. Meyerhofer 4 Co.. Forchstrasse 2 Zurich 32. Switzerland MEYER-SCHOLER, Hans Carl Spitteierstrasse 1 Liestal. Switzerland (Tonwerk Lausen AG) MEYSEL, John J. Refracton Ltd. Zurich 2 Genferstrasse, Zurich. Switzerland MICHAEL. Frank L. (E I) 319 Norbounte 31vd-, St. Matthews Louisville 7, Ky. (General Electric Co.) MICHAEL. Harold J. (E) Cia. Industrial del Norte Apartado 226. Saltillo, Coah., Mexico MICHEL, Howard (E) Porcelain Enamel, Ine. 80 S. Dover, Denver 15, Colo. MICHEL. S. Etablissements G. Devineau 26, rue Lafayette, Paris 9*. France MICHELOTTI, Joseph E. (E I) 164 E. Essex Ave., Lansdowue. 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 Div., Carborundum Co.) MIDDLESWARTH. Earl T. (G) 7 Moody St.. Amesbury, Mass. (CBS-Hytron) MIDDLETON. George J. (M) L. H. Butcher Co. 3628 E. Olympic Blvd. Los Angeles 23. Calif. MIDGETTE, Willard B. (M) Eagle-Picher Co., Chemical Div. 1501 Oliver Bldg.. Pittsburgh 22, Pa. MIKE. Thomas M. 40 West St., Horneil, N. Y. M ILA.NT, Hello Box 926. Alfred. N. Y. M ILD W OFF. 3er. <G) Sent Glass Works, Inc. 35-25 126th St. Richmond Hill IS. N. Y. M IL IL L O . Frank A. lE J ) 167 Lexington St. East 3ostcn 23. Mass. I A rth u r D. Little. Inc.) MILLAR. N. S. C. F rit Factory Radiation Group Sales Ltd., Grappenhal Works W arrington, Lancs., England MILLER, Alan D. 542 E. 33rd St.. Seattle, Wash. M ILLER, B. L. (W ) Rovai China. Inc.. Sebring, Ohio M ILLER. Boyd C. (M) Miller Equipment Co. Box 1566, Salisbury, N. C. M ILLER. E. R. (W ) Washington Porcelain Co. Willow St., Washington, N. J. M ILLER, Fred W. (R) Frar.kiin M a nor, 114 Fra nklin St. 31dg. 3, Apt. 3-2, Morristown, N. J. (Carborundum Co.) MILLER. Grant E. (E!) Ferro Corp.. 4150 E. 56th St. Cleveland 5, Ohio MILLER. Harold (E) 5736 N. Talman Ave., Chicago 45, III. (Ohmite Mfg. Co.) M ILLER. Harold D. (M) 1S9 Circle Dr., Plandome Manor Long Island. N. Y. (B. r . Drakenteld & Co., Inc.) MILLER, Henry E. (R) Chicago Wheel 4 Mfg. Co. 1101 W. Mor.roe St,, Chicago 7, III. M ILLER. Howard L. (R I) Libbey-Ower.s-rord Glass Co. Box 4273, Charleston. W. Va. M ILLER. James L. (R) 151 Peach St.. Park Forest. III. (Norton Co.: M ILLER. John B. (M I) ^ Third St., Lewiston, N. Y. ^Titanium A.iloy Mfg. Div.. National Lead Co.) MILLER. John W. (W) New Castle Refractories Co. New Castle. Pa. M ILLER. Jorge Smith Casiila 187. CristaJerias de Chile S. A. Santtago. Chile MILLER. Marlin. Jr. 1733 Southwood Ave.. South Bend, Ind. M ILLER. Maurice. Jr. (X) 4g4 E. Beechwold Ave. Columbus 14, Ohio M ILLER. O. E. (R) Pyro Refractories Co. _ Box 488, Oak Hill. Ohio M ILLER. Ralph E. (G) 365 Glen Ave., Elmira, N. Y. (Coming Glass Works) M ILLER, Robert A. (GF) 1211 Carlisle St.. Tarentum. Pa. (Pittsburgh Plate Glass Co.) MILLER. Russel A. (W I) 251 E. Rockland St. Philadelphia 20, Pa. (Frankford Arsenal) MILLER. R. V. (W ) Sovereign Potters Ltd. 232 Sherman Ave. N. Hamilton, Ont.. Canada MILLER. R. W. (G) Columbia-Southern Chemical Corp. One Gateway Center, Pittsburgh 22, Pa. M ILLER. Vincent P. (M) Miller Pottery Engineering Co. 2300 Palmer St. Swissvale, Pittsburgh 18, Pa. R oster 73 MILLER. \V. D. (G) Owens-Illinois, Box 1019 Oakland 4, Calif. MILLER. William A. (R) Carborundum Co.. Falconer, N. Y. MILLER. William A. 306 E. Madison St., Gibsonburg. Ohio iLLICAN, Kenneth L. (R) Aluminum Co. oi America 3300 Missouri Ave., East St. Louis, 111. MILLIGAN. Chester E. t.R3 Electro Refractories 3c Abrasives Corp. 4814 Loma Vista Ave. Los Angeles, Caiif. MILLIGAN. Loweil H. (B) Norton Company, One New Bond St. Worcester 6. Mass. M ILLIK EN, Edward C. (SI) 444 W. North Ave. East Palestine, Ohio (Natco Corp.) M ILLIKEN, Frank H. (S) Bowerston Shale Co.. Bowerston, Ohio M ILLIKEN. Joseph E. (SJI) 1308 South St., Pottstown, ?a. ( Robinson Clav Product Co.) M ILLIKEN, William M. Cleveland Museum of Art Cleveland 6. Ohio M ILLIKEN, William U. (SJ) Box 23, Bowerston, Ohio MILLMAN, Nathan (M) J. M. Huber Carp., Huber, Ga. MILLS. G. Alexander (B) Houdry Process Corp., Box 427 Marcus Hook, Pa. MILLS, R. Gerald (B) General Electric Co. Commonwealth Edison Project 2153 S First St.. San Jose, Calif. M ILTON BRICK CO., LTD. (D. T. Green) Box 554 Milton, Ont.. Canada MINARD. Richard A. '3 ) 3rookneld Engineering Labs.. Inc. 240 Cushing St.. Stoughton. Mass. MINER. Reginald R. CR) 412 W. Chestnut Ave.. Metuchen, N. J. (Carborundum Co.) MINK. John D. (G) R. R. 2. Dunkirk, Ind. (Armstrong Cork Co.) MJNNICK. L. John (R) 305 2over R i , Cheltenham. Pa. (G. it W. H. Corson) MINSHALL. John 3. (R) Kaiser Aluminum it Chemical Sales. Inc. 3 Gateway Center, Pittsburgh 22, Pa. M INTON, G. Z. (G I) 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, U ne (BFI) School of Ceramic Engineering Georgia Institute of Technology Atlanta, Ga. M ITCHELL. Russell G. (M) R. R. 1. Dutch Ridge Rd. Beaver, Pa. (McDanet Refractory Porcelain Co.) M ITO FF, Stephan P. (B) General Electric Ca,, Rea. U b . Metallurgy & Ceramics Dept. Box 1088, Schenectady, N. Y. MITRA, H. K (I) 12 A Road East Jamshedpur E.R., India (T ata 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. V'OL. I!.'), NO. 10 (1050) MOCHEL. John M. (B) 97 Hillcrest Dr., Painted Post. N. Y. (Corning Giass Works i MOCKRIN, Isadore (B) Pennsylvania Salt Mfg. Co. Research 3: Development Div. Box 4383 Chestnut Hill P.O. Philadelphia 18, Pa. MOE3CS. C. R. (M) United Clay Mines Corp . Tremor.. N. J. MOFFAT, John, Jr. (Rl 12255 Miranda St. North Hollywood, Calif. (Gladding, McBean 3c Co.) MOFFAT, John W.. Jr. (R ) Babcock 3t Wilcox Co. 2730 Koppers Bldg.. Pittsburgh 19. Pa. MOFFETT, Roben A. (R l) North American Refractories Co. 1012 National City E. 6th Bldg. Cleveland 14, Ohio MOGEY, Leona (G) Raytheon Manufacturing Co. 55 Chapel St.. Newton. Mass. MOHANTY, Gajendra Nath (I) 6 Kalimati Rd., E,, Tatanagar, India MHL, Helmuth (W) Fabriea de Loza " U Favorita" S.A. Palma Norte 308, Despacho 312 Mexico I. D. F. MOHLER, Neal F. (SI) 206 Dogwood, Park Forest. III. (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. N. J. (Consulting Engineer) MONAGLE. William T. (R) Lloyd Ave.. Stanhope, N. J. (Reaction Motors. lac.) MONETA, Fausto Via Mamoretti 9, Milano, Italy (Ditta Giuseppe Moneta) MONG. Lewis E. (R) S5C6 Loughborough ?:. Chevy Chase 15, ltd . (National 3ureau a: Standards) MONINGER. Richard E. (W ) Harding Ave.. East Liverpool. Ohio (Wellsviile China Co.) MONKS. Douglas E. 133 Hillside Terrace, Irvington. N. J. MONKS. J. R. (G) 4714 Harbord Dr.. Toledo 13, Ohio (Owens-Illinois) MONROE. G. DeVon 3913 Whitland Ave., Nashville. Tenn. MONTAGNO. Antonio M. (E ) 69 Glenmont Ave.. Columbus 14. Ohio (Inland Engineering Co.) MONTGOMERY, Earle T. (W FI) 12 W. Jeffrey PL. Columbus 14, Ohio (Consulting Engineer) MONTGOMERY. Eldwin C. (GI) Libbey-0wens-Ford Glass Co. Jewella Rd.. Shreveport. U . MONTGOMERY. Thomas B. (G) Pittsburgh Ptate Glass Co. 632 Ft. Duquesne Blvd. Pittsburgh 22, Pa. MONTGOMERY, Wayne C. (W ) Aluminum Co. of America 230 Park Ave, New York 17, N. Y. MOODY. H. Leslie (D) Hyalyn Porcelain. Inc.. Box 460 Hickory, N. C. MOODY. Willis E. (B I) School of Ceramic Engineering Georgia Institute of Technology Atlanta. Ga. MOONEY. Edward L. (W ) General Laboratory Assoc, Inc. Norwich. N. Y. MOORE, Carleton 3. 391 S. Wilson. A v e , P asaden a, Calif. MOORE. Charles H. (3 ) P. R. Mailory U Co. 3029 E. Washington St. Indianapolis 6. Ind. MOORE. Dwight G. (E F I! Mineral Products Division National Bureau of Standards Washington 25, D. C. MOORE. K. Dept, of Giass Technology University of Sheffield Eimf.eld, Northumberland Rd. Sheffield 10, England MOORE, Henry (G ) 38 Potter Ave, West New Brighton Staten Island, N. Y. (Metro Glass Co.) MOORE. James M. (S) Ashe Brick Co, Van W'yck, S. C. MOORE. John G. (W ) 405 E. Poptar S t, Robinson 2, 111. (Case Mfg. Corp.) MOORE. Matthew S. Pre-Fab. 241, Clemson College Clemson, 5. C. ' MOORE & MUNGER (Murrav Rushmore. Jr.) 33 Rector St. New York 6, N. Y. MOORE. Richard S. (R I) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22. Pa. MOORE. Robert E. 1607 Campus R d, Toledo 6, Ohio MOORE. Robert F. (R) 3345 Forbes S t, Pittsburgh 13, Pa. (Jones & Laughlin Steel Co.) MORAN. J. J. (G) Lancis Ave. Soring Rd. Vineiand. N. J. (Kimble Glass Co.) MORELL. N. L. (R) 313 Union Bank Bldg, Bethlehem. ?a (N. L. Moreil Co.) MOREXA. Aifred (W I) 90 Haze! S t, Clifton. N. J. (Mucon Corp.) MORE5CO. Albert J. Gen D el, Alfred. N. Y. MORGAN. John M. iW J) 42 Laurel D r, Scranton. Pa. (General Electric Co.) MORGAN. Raymond W. (R) R. W. Morgan C o, 11695 Woodbine Detroit 39. Mich. MORGAN. Reginald W. (G) Ball Brothers C o, In c, Muncie. Ind. MORGAN. Robert A. (W I) Pass 3c Sevmour. In c , Syracuse, N. ) MORGAN. Stuart F. (W I) " Marshnere", Mattapoisett N.eek Rd. Mattapoisett. Mass. " f j. I. Paulding. Inc.) MORGAN. Willard L. (G) 1203 Moundview A ve, Newark, Ohit (Owens-Coming Fibergias Corp.) MORGAN. W . R. (G) Sterling Grinding Wheel Co. Box SOI. Tiffin, Ohio MORNIN. Bob L. (W I) 3885 Pierce, Wheatridge, Colo. (Coors Porcelain Co.) MORREN. Georges 42 Bd Guillaume Van Haelen Forest. Brussels, Belgium (Diamant Boart) MORRIS. Ernest D. 15 Irby Rd.. Heswall. Cheshire, England (Morgan Refractories Ltd.) MORRIS. George J. (E) Research D ept, Ferro Corp4150 E. 56th S t, Cleveland 5, Ohio R oster MORRIS, Irvine H. (W) Ferro Cor?., 4150 H. 56th St. Cleveland, Ohio MORRIS, John L. (\V) 1442* Allingham, Norwalk, Calif. (Durocr.rotne Oeealcoraania Co., Inc.) MORRIS, \V. C. (G) : 1251 Mayfield Ridge, Qeveiand 24, Ohio (Karshaw Chemical Co.) MORRISON, 3oone H. (G) B. F. Draxenieid & 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.) MORRISON, Wallace S. (M) Illinois Water Treatment Co. 840 Cedar St., Rockford, 111. MORSE, Arthur E. (GJ) 2*35 Woodstock. Columbus, Ohio fFederal 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 Ave. Jersey City 4, N. J. MORTON PO TTERY CO. (S. W. Rapp, Jr.), 315 W. Jefferson St. Morton, 111. MORTON, William A. (G) 46 Standish Blvd.. Mt. Lebanon Pittsburgh 23, Pa. (L attus Engineering Corp.) MOSAIC T IL E CO. Zanesville, Ohio MOSER, 3erthold B. Industrie Ceramica. Lida. Apartado Aereo 4829, 3ogota. Colombia MOSER. John 3. (B) ?-*3 Ashland Ave., Evanston, 111. (Northwestern University) iOSER. John L. (R I) 1219 Acorn Dr.. Davton 9. Ohio ( W. H. Kieiaber Co.) MOSS. LeRoy L. (E l) 3553 Ingieside Rd. . Shaker Heights 22, Ohio ( Ferre Corp.) MOTSCH. F. R. (G . FV 'er-Forres Gins Cn . Marion In.!. MOULD. Richard E. (G) P-eston Labs.. Box 149. Butler. Pa. MOULD. W. J. ,W ) Steubenville Pottery Co., Box 1030 Steubenville, Ohio MOUNT CLEM ENS POTTERY CO. (Charles E. Doll) Mount Clemens. Mich. 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 I. (BI) Ceramic Engineering Division University of Washington Seattle 5. Wash. MUELLER. John P. (M) 120 Hoffman Ave., Trenton, N. J. (Mueller Machine Co.) VOL. .1"), NO. 10 (IDofO MULL. Lee R. (G) Owens-Coming Fiberglas Corp. Barrington. N. J. MULLADY, Russell E. (M) 459 E. High St.. New Philadelphia, Ohio (Titanium Alloy Mfg. Div., National Lead Co.) MULLAN, Joseph (S) Champion Brick Co. 7600 Pulaski Highway Baltimore 6, Md. MULLEN. Willard F. (M) Klinger Heights, State College. Pa. (Curtiss-Wright Corp.) MULLER. Gerhard Staatliehe Porzellan-Manufaktur Berlin Hartmannstrasse 1-3 (13a) Selb/Oberfr. U. S. Zone, Germany MULLER. Max (R I) ' Basic, Inc.. 845 Hanna Bldg. Cleveland 15, Ohio MULLER. Robert Emaillerie de St. Maurice 29. Rue du Val d'Osne St. Maurice (Seine), France MULLIGAN, Edwin F. (E) Jones Metal Product* Co. We*t Lafayette. Ohio M U LLITE REFRACTORIES CO. (Edward L. 3ohn) 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 Jt G ay Co. Box 390. South Pasadena. Calif. MULVANE. O. E. (E l 4138 N. 21st St.. Milwaukee 9, Wise. (A. O. Smith Corp ) MUNDY. O. S. (WT) 426 Park Ave.. Wheaton. 111. (Western Electric Co.) MURGATROYD. John B. Rockware Glass. Ltd.. Rockware Ave. Greenrorri. Middlesex. England MURPHY. Edward J. (W ) Charles B. Chrystal Co.. Inc. 53 Park PI.. New York 7. N. Y. MURPHY Harrv T (R) Oimax rise Brick Co.. Cimax. Pa. MURPHY. Remington M. (W) 774aA Wagner Way l.ynnewood Gardens Elkins Park I*. Pa. (International Resistance Co.) MURRAY. Ernest L. (M) United States Ceramic Tile Co. East Sparta. Ohio MURRAY. Haydn H. (B) 1209 Maxwell Ln.. Bloomington, Ind. (Indiana University) MURRAY. Louis J. Vanl Potteries, Ltd.. Box 49 Meverton. Transvaal. South Africa MURRAY. Maurice A. (W I) Redding Place. Towaco, N. J. (B. G. Corp.) MURRAY. Maurice J. (B) Universal Oil Products Co. 30 Algonquin Rd.. Des Plaines, 111. MURRAY. Robert S. (G) B. F. Drakenfeld & Co., Inc. Washington, Pa. MUSSELMAN. H. G. (G) 4413 Old Frederick Rd. Baltimore 29, Md. (Carr-Lowrey Giass Co.) M UTTITT. F. C. (R) Algoraa Steel Corp. Sault 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. ;\V) Eljer Co.. Third Ave.. Ford City, Pa. MYERS, Thomas J. (G) 2525 Seventh Ave., Altoona, Pa. (Svlvir.ia Electric products. Inc.) MYERS, Wilbur C. ( B> 2711 W. 129th St., Garccna, Calif. I National Cash Register Co.) MYERSON. Martin J, W ) Myerson Tooth Corp. 90 Hamilton St.. Cambridge. Mass. MYGDAL, Rolf L. (W) 1460 Painter Circle, Apt. 3 St. Laurent, Que.. Canada ( Pilkington's Tiles, (Canada) Ltd.) MYINT, Maung S. Box 283, State College. Pa. MYINT, Simon M. K. (S) University of Pennsylvania 3400 Spruce St., Philadelphia 4, Pa. N NADLER, Marion R. (B) 5325 Enright Ave., Dayton 3, Ohio (Wright-Patterson Air Force Base) -VAGAN, 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. III. NAKAMURA, Yoshikazu Shoko Glass Co., Ltd. 1. 4-chome. Gir.za Cnuo-ku. Tokyo, Japan NANCE. Taylor E. (R) 5223 Alder Dr.. Mission. Kans. (Owens-Coming Fiberglas Corp.) N APIER. John B. (S) 3574 Napier Ave.. Macon, Ga. (Gierokee Brick Tile Co.) NAPOLITANO, Albert (G) 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. (D F) University of Cincinnati Ceramics Dept.. Cincinnati 21. Ohio 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-MULLER DIV. (E. B. Henby) -- ' ' 549 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 C O , IN C (R. A. Hitchins) 17th 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. Roster 77 t- AVRATIEL. Hans Jahnstr. 3, L auf,'Pegnit:: Bavaria, Germany (Sembach i Co) EAL, James E. (R) 164 Sar.dford Ave. '''rtfc Plainfield. N". J. 'ns-Manvilie, Inc.) t /N, Terence P. Edward Curran Engineering, Ltd. Cardiff, Waies ED R E3ER G , Roy E. G. iXJ) dlS Putnam Ave., Zanesville, Ohio .`EEL, Lee. I ll Box 2546, Georgia Tech., Atlanta, Ga. ,'EELY, Homer E,, Jr. (G) 404 E. 11th Ave., Taren turn. Pa. (Pittsburgh Plate Glass Co.) 4E FF. Edward D. (?.) Box 205. Templeton. Pa. (Harbison-Walker Refractories Co.) ."JEFF, John M. (S) Armour Research Foundation 10 W. 35th St.. Chicago 16, 111. NEIMAN, Robert (R) Whip-Mix Corp., Inc. 411 W. Avery Ave.. Louisville 8, Ky. NELSON, Forrest W. (El) A. 0 . Smith Corp., 3533 N. 27th St. Milwaukee 1, Wise. NELSON, James A. (R) University of Illinois 204 Ceramics 31dg., Urbar.a, 111. NELSON. Richard P. 8520-- 32nd Ave.. X. W. Seattle 7. Wash. NELSON, Robert E. (C) 20 Spring St.. Seneca Falls, N. Y. (Sylvania Electric products, Inc.) NELSON. Robert T. (R) Columbia-Ger.eva Steel Co. Box 510. Provo. Utah NELSON, William I. (G) 113 Mary St.. Binghamton. N. Y. '.Solvay ? rocess Div,, Hlied Chemical 4c Dye Corp.) Nwac'ENSTONE. Marc i3 ) 10232 Frar.kstown Rc. Pittsburgh 35. pa. (Westinghouse Electric Corp.) N ETTER . William S. iG) Keystone Abrasive Wheel Co. Gregg t Hammond Aves.. Carnegie, Pa. NETZSCH. Erich Maschinenfabrik Gebrueder Xetisch Werkstrasse 19 Selb ;3 ay em j, Germany NEW. Ryland J. (S) National Sewer Pipe Ltd. Box 36. Oakville. Ont., Canada NEWARK, Frank F. (W) Aluminum Co. of America 1450 Terminal Tower Cleveland 13, Ohio NEWARK. Martin (M) Siraonds Abrasive Co. Tacony 4c Fraley Sts. Philadelphia 37. Fa. NEWBOLD GENERAL R EFR A C T O R IES. LTD.. Gavey St. Mayfield. N. S. W.. Australia NEW CASTLE REFRACTORIES CO. (R. W. Rowland) New Castle, Pa. NEWCOMB. Rextord, Jr. (E l) 915 Dodge. Lake Geneva, Wise. (R X Chemical Co.) NEW JE R SEY PORCELAIN CO. (J. M. Cilfillan) Box 908 Trenton 5. N. J. N EW K IR K . Terry F. (B) General Electric Co. Power Tube Dept. Schenectady. N. Y. A EW TO N, Avery C. (R) The Refractories Institute F irst National Bank Bldg. Pittsburgh 22, Pa. Vol. 35, No. 10 (1050) NICHOLSON. Albert H. (D) Federal Glass Co, 515 Innis Ave.. Columbus 7, Ohio NIEMAN. A. H. <G) Ohio Lime Co., Woodville, Ohio N IELSEN, H. Bach (M) Nichols Engineering 4; Research Corp. 70 Pine St.. New York 5, N. Y. NIKLEW SKI, B. K. Main Enamel M:g. Co , Ltd. Gothic Works. Angc! Rd. Edmonton. London, N. IS. England N IL ES FIR E BRICK CO. (Carey E. Lindsay) 165 E. Park Ave.. Niles, Ohio NIPPON TOKI KAISHA, LTD. (Jun Isagawa) --1, Noritakesbinmachi, Nisbiku. Nagoya, Japan NISULA, Chester A. (R) 716 Main St.. Riverton. X. J. (Simonds Abrasive Co.) -VIXEN, David (G) C3S-Hytron, Kent 4c Warren Sts. Newburyport, Mass. NIYOGI. D. P. M /S Bengal Enamei Works Ltd. P. O. Bengal Enamel Palta (24 Parganas) West 3engal. India NOBES, Frederick L. Carborundum Co., Ltd., Trafford Park Manchester 17, England NOBLES. Eugene L. (E) 3714 Torrington Ave.. Cleveland 29, Ohio (Ferro Corp.) NOBLES, Melvin A. (B) Oklahoma A. 4t M. College Mechanical Engineering Dept. Stillwater, Okla. NOCK. Charles J. (R) 315 Front St.. Berea. Ohio (Nock 4t Son Co.) NODA, Tokiti Dept, of Applied Chemistry Faculty of Engineering Nagoya University Chikusa-ku. Nagoya. Japan NODURFT. Russ E. (W ) 9353 Parrot. Downey, Calif. (Verson Kilns) NOE. James T. (S ) 411 Madison Ave., Brookville. Pa. (Hanley Co.) NOHLE. Richard C. (SI) Claycraf: Co. Box 866, Columbus 16. Ohio NOLAN. William r . Box 251. Alfred. N. Y. NORAXTE. Nicholas J. (W ) 609 Spring St.. Latrobe, Pa. fStupakoff Div.. Carborundum Co.) NORDBERG. Martin E. fGF) 134 E. Fourth S'... Coming. N. Y. (Coming Glass Works) NORDGREN. Harry Aktiebolaget Gustavsberg Fabriker Gustavsberg, Stockholm, Sweden NORDMEYER. Rudy L. (S) Valley Brick 4t Tile Co.. Box 353 Mission. Texas NORDQUIST. Clarence E. 4328 Bagley Ave., Seattle 3. Wash. NORDQUIST, Lawrence E. (BJ) Comell-Dubilier Electric Corp. 1605 Rodney French Blvd. New Bedford, Mass. NORDYKE. J. S. (MF) Hammond Lead Products, Inc. 1602 Oliver Bldg., Pittsburgh 22. NORMAND EAU, Pierre (D) 3660 Hutchison St. Montreal 18, Que.. Canada NORRIS. Charles R. (W ) 4024 Diehl Ave., Cincinnati 36, Ohio (Charfaeaux Pottery) NORRIS-THERMADOR CORP. (Edgar H. Freeman), 20118 E. Valiev Walnut. Calif. NORTH AMERICAN P H IL IP S CO.. INC. (C. J. Woods) Research 4t Control Instruments Div. 750 S. Fulton Ave., Mt. Vernon. N. Y. NORTH AMERICAN REFRACTORIES CO. (Robert A. Moffett) 1012 National City E. Sixth Bldg. Cleveland 14, Ohio NORTHW ESTERN GLASS CO. (Edward S. Campbell) 5301 E. Marginal Way, Seattle , Wash. NORTHWESTERN TERRA COTTA CORP. i Burnette Purceil) 1750 Wrigfctwood Ave., Chicago 14, 111. NORTON, Charles L.. Jr. (RF) Babcock 4c 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 39. Mass. NORTON. George R. Pfaudler Co.. Res. Lab. 1000 West Ave., Rochester. N. Y. NORWALK, Lt. Marshall H. (XJ) WADC Area "3 ". Box 3604 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 3. N. Y. NOWELL, Dcrroh L.. Jr. (S) 202 Broad St., Augusta. Ga. (M erry Bros. Brick Sc Tiic Co.) NUSS3AM. Theodore 170 Ellis Ave.. Irvington. N. J. NYQUIST. Rev A. :0'. , 3650 Beechway Blvd.. Toledo 14, Ohio ( Libbey-Owens-Ford Glass Co.) o OAKLEY. W. W. (GF) _ Box 35, Corning. N. Y. (Corning Glass Works) O'BAN NON. L. S. (E ) 2239 rarleigh Rd., Columbus 21. Ohio (Batteile Memorial Institute) OBERST. Clair R. (M) Industrial Ceramic products, Inc. 965 W. Fifth 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.. BRICX & T IL E CO. ' (Elmer E. Apt) Springfield. Minn. O'CONNELL. Thomas B. (G) Lihbey-Owens-Ford Glass Co. 1701 E, Broadway, Toledo 5, Ohio O'CONNOR. Frank Box 235. Alfred. N. Y. O'CONNOR. Jerry B. (M) 1205 Edgewood Ave.. Apt. B-3 Trenton 8. N. J. Pa. (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 0STERLS._Hcnry (E) Roesch Enamel & Mfg. Co. W. Main 4 N. 24tfa Sts. Belleville, 111. O EST E R L E . Robert A. (E) 2427 W. Main. Belleville, III. (Rcesch Er.amel & Mfg. Co.) ,EN. D. ?. (S) J)gden Engineering Co. Box 21S, Ottawa, III. OGDEN. Ellsworth P. (RF) Box 537, Granby, Colo. (H arrop Ceramic Service Co.) OGDEN', John T. (GF) Clast Industry S3 W . a2nd St,, New York 36. N. Y. 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 3, Ohio O H IO LIM E CO. (A. H. Nieman) WoodviUe, Ohio O H LIG ER , Lewis P. (G) 209 Ridgeview Dr. East Rochester, N. Y. (Bausch 4 Lomb Optical Co.) OHNSORG. Roger W. Box 1049, Alfred. N. Y. O H N Y STY , Basil (R J) University of Illinois 204 Ceramics Bldg., Urbana, 111. O LD H ICKO RY CLAY CO. (Lee F. Powell) Box 2*1. Paducah, Ky. O'LEARY, W. J. (R) 24 Seminole Ave., Claymont, Del. (E . I. du Pont de Nemours & Co.) O LEN CH U K , Daniel L. (R) 1300 Laird Ave.. Aliquippa, Pa. (Jones 4 Laughlin Steel Carp.) OLIVER. D. A. Messrs. Wm. Jessop & Sons Ltd. Brightside Works, ShetHeid. England jlVER, John C. (E) Porcelain Enamel Institute 1145 19th St., N. W. Washington 6, D. C. O LIV E R IC , William (G) Rolland Glass Co.. Box 232 Clarksburg. W. " a. OLSEN. Eric (D) R. R. 63. Dundee, 111. (Haeger Potteries, Inc.) OLSEN. Joan M. (G) E. I. du Pont de Nemours 4 Co., Inc. Electrochemicals Dept. Wilmington 98. Del. OLSEN. Rangwald S. (E l) 1137 Grant St., Evanston. 111. (Armour 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 W renwood Ci. Webster Groves 19, Mo. (Laclede-Christy Co. Div. H. K. Porter Co.) ONO ND AG A PO TTERY CO. (R . H. Pass) 1836-58 W. Fayette St. Syracuse 4, N. Y. ORAVEC. Joseph A. (S) 3731 N. Ncwland 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 23, D. C. OREFRACTION. INC. (A lbert L. Kreuer) 7423 Thomas St. Pittsburgh 8, Pa. V ol. 35. No. 10 (1956) ORMSBY. Walter C. (\V) National Bureau a: Standards Washington 23, D. C. ORNELLA. LeRoy F. (GJ) 3206 Upton Ave.. Toledo 6, Ohio (Glass Fibers, Inc.) ORR, David 3. R.R. 2, Oneonta, N. Y. ORTEPIO, Salvatore (W) General Ceramics Corp., Crows Mill Rd. Keasbey, N. J. ORTH, Howard S. (W ) Industrial Ceramic Products, Inc. 965 W. Fifth Ave.. Columbus 3. Ohio ORTH, Howard S.. Jr. (W ) 236 Fairway Dr., Columbus, Ohio (Industrial Ceramic Products. InC.) ORTMAN. Curtis D. (W ) A C Spark Plug Div. General Motors Corp. 1300 N. D on Hwv., Flint 2, Mich. ORTMAN, Fred B. (R F!) Gladding, Mc3ean & Co. 1275 Harrison St. San Francisco 3. Calif. ORTON. EDWARD, JR,, CERAMIC FOUNDATION (J. L. Carruthers) 1445 Summit St. Box 146, Sta. A, Coiumlms 1, Ohio ORTON, Mrs. Edward, Jr. 39 W. Torrence Rd,, Columbus. Ohio ORZANO, Michael J. (S I) Claycraft Co. Box 866. Coiumbus 16, Ohio OSBORN, Elburt F. (B) College of Mineral Industries Pennsylvania State University University Park, Pa. OSBORN, Walton O. (R) North American Refractories Co. W ater St.. Lock Haven, Pa. OSBORNE. David G. Lemington Glass Works Ltd. Lemington Newcastle-on-Tvre 5. England OSTERHOLTZ. Carl (R) 5 Mayeid PI., Metuchen, N. J. (Valentine Div.. A. ?. Green Fire 3 rick Co.) OSTRANDER, Eugene C. (G) Kopp Glass. Inc. Box 8255. SwLvsle. Pittsburgh 18. Pa. OSTRANDER. Van R. (B) Endevco Corp. 161 E. California St.. Pasadena, Calif. OTLEY. J. D. ( S , John B. Xeilv Inc. of Penn. 1720 Cberrv St.. Philadelphia 3. Pa. OTRHALEK. Joseph V. (W ) Wyandotte Chemicals Corp. Wyandotte. Mich. OTTAWA SILICA CO. (George A. Thornton) Box 437 Ottawa. 111. OTTO. George H. (S) S3 W. Jackson Blvd., Chicago 4, 111. (Consultant) OTTO. William H. (G) Owens-Coming Fiberglas Corp. Newark. Ohio OTTOSON. Axel (GI) 4300 Highland Ave., Shadyside, Ohio (Imperial Glass Corp.) OWEN, Frederick E. (R) Electrical Refractories Co. East Palestine, Ohio OWEN, J. D. i R. Fowler. Ltd., Fitzroy St. Marridcville. Sydney. N.S.W., Australis OWENS-CORNING FIBERGLAS CORP. (A. C. Siefett) Newark, Ohio O W EN S-ILLIN 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. 8S2S Butler Ave., Detroit 11. Mich. OXLEY. Charles A. (WJ) 1508 Park 5:.. Robinson, 111. (Case Mfg. Corp.) P PABST, John G. (M) 52 N. Main St., Butler. Pa. (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 CIFIC COAST BORAX CO. (M. H. Pickard) 100 Park Ave., New York 17. N. Y. PACKMAN, Willard D. (W I) E. M. Knowles China Co. East Liverpool. Ohio PADEN CITY POTTERY CO. (M errill C. Sondles) 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.) FA FF. John A. (G) 232 N. Sixth St., Reading, Pa. (Willson Products, Inc.) PA FFO R D . Ray W. (SFI) Acme Brick Co. Box 425. Fort Worth 1. Texas PA LA DINO . Albert E.. Jr. Raytheon Mfg. Co.. Res. Div. Waltham 54, Mass. PALMER. Delos M. (D) 4401 Jackman Rd., Toledo 12. Ohio (Delos M. Palmer 4 Associates) PALMER. Rufus N\ (M) 476 Broadmoor Ave., Pittsburgh 34, Pa. (Consultant) PALM ER. W iilard E. (SI) 768 N. Cress St. Newcomerstown. Ohio (C a y Citv Pipe Co.) PA LM ERI. Victor R. (E) H erm etite Corp. 702 Beacon St.. Boston 15. Mass. PALMOUR. Hayne HI (BI) 3ox 204. Signal Mountain, Tenn. (American Lava Corp.) PA LTZER. Clifford (X J) 1100 Peace St., Peila. Iowa PANGELS. Alfred A. (WJ) Ave. Poianco 18. Mexico 5. D. F. (Sanitarios "E l Aguila" S. A.) PA NG ELS. Heinz J. (W) Mosaic Tile Co. Pershing Rd.. Zanesville. Ohio PA PER MAKERS IM PO R TIN G CO.. INC. (Charles Brian) 44 S. Second St.. Easton,-Pa; ' PAPIER. Harry (S) Natco Corp., Box 267, Cordova, Ala. P A PPIS. James 433 Brookline Ave., Boston 15, Mass. PARCEL. Martin W. (W) Robertson Mfg. Co. Box 848, Trenton 5. N. J. PA RIKH . Niranjan M. (B) Metallurgy Dept. Scientific Laboratory Ford Motor Co., Dearborn, Mich. PARKER. Glidden M.. Jr. (D) Glidden Pottery, Inc., Alfred. N. Y. PARKER. Harry (BI) 1015 Quebec Terrace Silver Spring, Md. (National Bureau of Standards) PA RK ER. Henry F. (G) Pittsburgh Plate Glass Co. Creighton. Pa. R oster SI ARKER. James 'A'. Jr. iS i 7217 Shakespeare Rd. Colum bia. S. C. I Carolina Ceramics. Inc.) ARK ER. Leon (G) H . I. Thompson Fiber Glass Co. ">3 Cjrc o .a St.. Los Angeles 7, Calif. A R. Raymond \V. (S i ,ance Clay Product Co. Box 746. Alliance. Ohio AP.KISON. Robert G. Noble Hall. Rm lid . Champaign, 111. A RM AN. Donald \V. 2105 Seventh Ave., N.. Renton, Wash. A R M ER , Jess H., Jr. (G) Owens-Illinois, Technical Center 1700 N. Westwood Ave.. Toledo 7. Ohio 'A RN HA M , H. General Refractories Ltd. Worksop. England 'ARSON, James A. (W I) 6217 Broadway, Indianapolis 20, Ind. (V itroseai Corp.) 'A RSO N S, Douglas E. (S) Building Technology Division National Bureau of Standards W ashington 25. D. C. ?A RSO NS, J. R. (R ) - Chicago Fire Brick Co. 7531 S. Ashland Ave.. Chicago 20, III. PA R TIN G TO N , Philip A. Box 7S7, Alfred. X. Y. PA SCH AL, Forrest A. (S) Box 2S9. Siler City, N. C. (Huber-Warco Corp.) PASK. Joseph A. (X F I) Division of Mineral Technology University of California Berkeley a, Caiif. PA SPY , Stanley F.. Jr. (R) Ceramic Suppl v Co., Crooksville. Ohio PA SS. J. S. (W ) Pass G Seymour. Ir.c., Soivay S:a. \ Bovd Ave., Syracuse 9, X. Y. F i R. H. (W) Jr.or.caga Pottery Co. 85--:8 W. Fayette St. Syracuse X. Y. PA SS 4 SEYM OU R. INC. (J. S. Pass) Soivay Station. 50 Boyd Ave. Syracuse ?. N. Y. PA TE K . Sherwood E. .'St M idland Brick & Tile Co. Chillicothe. Mo. P A T E L . C handrakant J. 3ox 226. Alfred. X. Y. PA TE R SO N . G. W. (R) Refractories Engr. & Supplies. Ltd. 99 Clinton St.. Hamilton, Ont.. Canada P A T R IC K . Ens. Howard W. (XJ) XAS Klngsvtlle. SNA Kingsville, Texas PA TRICK. Robert F. (E l) Pernco Corp. 255a Greenmount Ave. Baltimore 18. Md. PA TTERSO N '. Richard C. (W) United States Ceramic Tile Co. East Sparta. Ohio PAULSON, Fred H. (R) 28 Greendaie Ave., Worcester 6, Mass. (Norton Co.) PA V LISH . Arnold E. (GF) 2904 Clarkson Rd. Cleveland Heights 18. Ohio (Cleveland Supply Co.) PA W LOW SKI. Edward J. (W) I I M orris St.. Amsterdam. N. Y. (Mica Insulator Co.) PEARCE. Charles S. (F) American Ceramic Society 4055 N. High St., Columbus 14, Ohio RCH . Howard C. (W I) - 27 H illcrest Manor. Midland. Pa. (L outhan Mfg. Co.) PEA R C H . William M. (W I) Akron Porcelain Co.. Akron 14. Ohio V ol. 35, N o. 10 ( 1006) PEARSON. Edward P. (X I Basic. Inc.. 343 H anna Bldg. Cleveland 15. Ohio PEARSON, E. J. 4 J,, LTD. (Charles A. G. Thom as) Firebrick Works Stourbridge. Worcs, England PEASE. Philip J. (G) 1405 Washington Ave. Parkersburg, W. Va. (Dcmutb Glass Works. Inc.) PECHMAX. Alexander (W I) 1157 E. Pasadena. Pomona, Calif. (Pom ona Tile Mfg. Co.) PECK. J. Clair (SI) 2423 Brookside Ln., Y ork, Pa. (Glen-Gery Shale Brick Corp.) PECKHAM, George W. (G) 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) 129 Chestnut St., Garden City, X. Y. PEEL. G. X. Associated Lead Manufacturers Ltd. Crescent House Newcastle-on-Tyne, 1, England PEILER, Karl E. (GF) Hartford-Empire Co. Div. Emhart Mfg. Co. Box 1620, Hartford 2, Conn. PEKAREK. Edward G. (B) 4898 Waldamere Ave., Willoughby, Ohio (Thompson Products. Inc.) PELL. Robert E. 909 W. Nevada St.. Vrbana, 111. PELZ. Robert W. (E l) 2706 Grovewood, Parma 9, Ohio (Ferro Corp.) PEMCO CORP. (Richard H. Turk) 550! Eastern Ave.. Baltimore 24, Md. PEXBERTHY. Larry' (G) Penberthy Electrom elt Co. 2317 47th 3. W.. Seattle 16. Wash. PENCE. Forrest K. (W FI) 1609 Scenic Dr.. Austin 3, Texas (Ceramic Societv o( the South W est) PENNSYLVANIA PU LV ERIZIN G CO. (William J. Woods, Jr.I Two Gateway Center Pittsburgh 22. Pa. PENTECOST. Joseph L. 647 Monticello Dr,, Fails Church. Va. PEREXY. Andrew (M l Pereny Equipment Co. 893 Chambers Rd. Box 153. Station A. Columbus. Ohio PERKINS. Harreil L. (Ml Central of Georgia Railway Co. 1212 R hodes-H averty Bldg. Atlanta 2. Ga. PERKINS. W alter W. (W I) 871 Jacoby Rd.. Copley. Ohio (United States Stoneware Co.) PERRY. Paul E. <B> Allegheny Ludlum Steel Corp. Brackenridge, Pa. TERRY. Robert F. (W I) Box 283. Victor. X. Y. (V ictor Insulators Div.. I-T-E Circuit Breaker Co.) TERRY. T. Ray (W) 1209 Bawcora. Sweetwater. Texas (General Electric Co.) PERTUCH. W alter A. R. (D ) Franklin Institute Library 20th 4 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 PETERSON. Albert F. 90 Fresh Ponk Pky. Cambridge 38. Mass. PETERSON. Donald H. 1.E 1 741 Hill Ave.. Pittsburgh 2!, Pa. (Westinghouse Electric Corp.) PETERSON. Jack D. (G) 3(0O2w9 c1r.2s3-IrlclirS.ot.i,s T1oledo 11, Ohio PETERSON. Jack L. , R! 1 S20 Milan Ave. South Pasadena. Cai-.i. (Melvin L. Jotttt Cj .,1 PETERSON. John A.. Jr. (\V) Metal 4 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. Inc.) PETT. Tyler G. (G) Kopp Glass. Inc. Swissvate, Pittsburgh 13, Pa. PETTY, Frank (W) 2771 W. 230th St. Fairview Park 26. Ohio (Cleveland Ceramic Corp.) PETTY. Howard E. (S) 3131 Ryor.s. Lincoln 2. Xebr. (Yankee Hill 3r!ck Mfg. Co.) PFAUDLER CO. (Sidney W. McCann) 1000 West Ave.. Rochester 3, N. Y. P F E IF F , C. H. (R) Curran-pfeiff Corp. Box 527. Metuchen. N. J. PF E IF F E N BERGER. Lucas E. University of Illinois 204 Ceramics Bldg.. Lrrbana, 111. P F E IF F E R . W. H. ( E r l ) Frigidaire Div.. General Motors Corp. 300 Tavlor St.. Davton I, Ohio PFLEGER. George E. (M) Harshaw Chemical Co. 3237 S. Garfield. Los Angeles 22. Calif. PHADKE. V. S. Central Potteries, Ltd. Itwari. Nagpur 2. India PHELPS DODGE CORP. MORENCI BRANCH (L. L. McDaniel) Morenci. Ariz. PHELPS. Girard W. (M) 410 E. Magnolia Dr.. Morrisville. Pa. (United C ay Mines Corp.) PHELPS. Stuart M. (R F) Mellon Institute. Pittsburgh 13, ?a. PH IL LIPS. Adrian W.. Jr. (R) 316 Fairmont Ave.. New Castle. Pa. (Shertango Chinn. Inc.) T H IL L irS . Charles J. (G) Radio Corp. of America RCA Victor Div.. Bldg, 56-1 Camden. N. J. PH ILLIPS. Edwin L. (M I) _ . . Carolina Pyrophyllite Co. Box 2414. Greensboro. X. C. P H IL L IP S . Gordon D. (W) Olean Tile Co. 103 S. Clark St.. Olean. X. Y. PH IL LIPS. James G. (R I) Dept, of Mines 4 Technical Surveys Mines Branch. Industrial Minerals Div. Lydia St.. Ottawa. Ont.. Canada PH ILLIPS. Leigh F. Box 87. East Quogue. L. I.. N. Y. P H IL L IP S . Richard A. (W J) 1836 Willow Ave. Niagara Falls. N. Y. (Sprague Electric Co.) PH IL LIPS. W. Eric (G) Duplate Canada Ltd.. Box 367 Terminal A, Toronto, Ont., Canada T H O EN IX . Richard C. (I) R. R. 1. Wynnewood Bound 3rook. X. J. R oster iw3 PICKARD. M. H. 1.M1 Pacific Coast Bora* Co. 100 Park Ave.. New York 17, N. Y. PIC K ET T . Albert R. (R ) Aluminum Co. of America 150! Alcoa Bldg.. Pittsburgh 19, Pa. T JEl5R,TrAevrtohrurCoOu.rt(MRd). Rochester 10. N. Y. (Hearty Industrial Ceramic Cor?.) PIE R C E GLASS CO. (J. G. 3ozzo) Railroad Ave., Port Allegany, Pa. PIER CE. J. Allen (R ) 798 Chalmers PI., Pittsburgh 16. Pa. (Harbison-W alker Refractories Co.) PIERPON T, Harian T,, Jr. (R) Norton Co., 1 New Bond St. Worcester 6, Mass. PIER SO N , James F. (M l) Pemeo Corp., Sales Dept. 5601 E astern Ave.. Baltimore 24, Md. PIG O T T , Phillip G. t R) Box 345. N orris. Tenn. (U nited States Bureau of Mines) PILK IN G TO N , Lawrence H. A. Messrs. Pilkington Bros., Ltd. Glass Works, St. Helens, England PIN C U S. Alexis G. (B) General Electric Co.. Res. Lab. Box 1083. Schenectady, N. Y. PIN N EY , J. M. (W ) H arker Pottery Co. East Liverpool. Ohio PINNOW , Harley R. (W) Pond St.. R. R. 19 Elast Liverpool, Ohio (H all China Co.) PIN O TTI. Fred D. (G) 2324 Middlesex Dr., Toledo. Ohio (Kimble Glass Co.) PISU LA. J. Donald (R) Corning Glass Works. Coming, N. Y. PITTENGER, John T. (W) Box 207. Newell, W. Va. (Homer Laughiin China Co.) sTMAX. Jack (G) Owens-Illinois, Technical Center 1720 N. Westwood Ave. Toiedo 7. Ohio PITTM A N. W illiam C. (R) 410 W hittfcom e Dr.. W yoming. C incinnati 15. Ohio (Chas. T aylcr Sons Co. I PITTS. Joseph W. (E) 5714 3eech Ave,. Betaesda 14. Md. (National Bureau of Standards) PITTSBURGH CORNING CORP. (W alter D. Ford) Research Sc Development Div. Port Allegany, Pa. PIT T SB U R G H PL A T E GLASS CO. (S . F. Cox) Creighton. Pa. PIXLEY, Francis V. (S) 358 Grand St.. Newburgh. N. Y. PLACE, Tom M. (BI) Helipot Carp. 916 Meridian St. South Pasadena, Calif. PLACE. Thomas M,, Jr. (B) 2413 W. U 6th St., Inglewood 4, Calif. (Helipot Corp.) PLAGGE. V ernon L. (G) 54 W oodland Ave.. E ast Orange. N. J. (W estinghouse Electric Corp.) PLAN JE. Christian W. (RI) Gladding, McBean it Co. 2901 Los Felix Btvd. Los Angeles 39. Calif. PLAN JE. Theodore J. M. (B) 4 Summit Ave., Roila. Mo. (M issouri School of Mines) PLANK, Ross D. (W) 2335 Shadowlawn Ave.. Los Angeles 39. Calif. (B . F. W agner it Co.) P L A N K E N H O R N . William J. (E F I) Chicago Vitreous Corp. 1427 S. 55th C:. Cicero 50, 111. Vo l . .35, N o . 10 (1 9 5 6 ) PLATT. Allan S. (S'; Structurai Clay products Institute 1947 Grand Central Terminal Bldg. New York 17, N. Y. PLEASANTS. Luther E.. Jr. (G 6002 Brookfield Rd.. Richmond. Va. (Allied Chemical & Dye Corp.) PLOETZ, Edwin C. H. (E l) 680 S. Lincoln Ave., Kar.kak, ill. (A. O. Smith Corp.) PLOETZ, George L. (W ) 261 Swaggertown Rd., Scotia 2, N. Y. (General Electric Co.) PLUMBO, Victor A. (G) General Glass Equipment Co. 5 S. Virginia Ave., Atlantic City, X. PLUMMER. Harry C. (SF) Structural Clay Products Institute 1520 18th St.. N. W. Washington 6. D. C. PLUMMER, Norman (M ) __ State Geological Survey of Kansas Lawrence, Kans. PLUMMER. William A. (G _ Corning Glass W orks, Corning, N. Y. PLUNKETT. Jerry D. 78 Westgate, Cambridge 39, Mass. PLUSCH. John A. (W ) 63 Spruce St.. Westneid, Mass. (Cortland Grinding Wheeis Corp.) POFFENBERG, Scott (M) 11616 Chenault St. Los Angeles 49. Calif. PO HLE. Joachim H. P. Pohle Co.. 37 A Sutelstrasse Hannover. Buchholz, Germany POISSON. Louis Faencerie de Badonviller Badonvier. Meurthe et Moselle. France POLAND. Milton E. (W JI) 323 S. Pleasant St.. Royal Oak, Mich. (Champion Spark Plug Co.) POLAR. Alfredo (W ) National Tile it Mfg. Co. Anderson. Ind. POLE. Gordon R. (S F ) 2592 S. Shore Blvd. White Bear Lake 10. Minn. (Minnesota Mining & Mfg. Co.) POLES. Alfred P. (W) 325 Arborlea Ave.. Morrtsville. Pa. (Clifton Ceramic Mfg. Co.) POLHEM-US. D. W. (R l Carborundum Co. Perth Ambor, N. J. POLK, Arthur E. (W ) R. R. 1. Dowagiac. Mich. (Produce Terminal Corp.) POLSKY. Jack W. (M) W. H. Sc L. D. Betz Co. Gillingham Sc W orth Sts. Philadelphia 24, Pa. POMEROY. William T. (W ) Sterling China Co. East Liverpool, Ohio POMPEI. Luigi SANAC Soc. per Az. Refrattari Argille e Caolini Via Martin Piaggio 13-7, Genova, Italy POND, Marvin H. (W ) 221 Ridge Ave., Gettysburg, Pa. (Keystone Ridgeway Corp.) POOLE, James P. (G) Brockway Glass Co-, Inc., Plant 2 Brockway, Pa. PORCELAIN METALS CORP. ( C J. Kleinbans) 1400 S. 13th St. Louisville 10. Ky. PORST. Edward G. (E l) 1418 Stonewood R d- Baltimore 12, Md. (Pemeo Corp.) PORTER, Frank R. (EFI) 318 E. Clark S t. Crown Point, Ind. (Inland Steel Co.) PORTER, J. L. (B) Kaiser Aluminum & Chemical Corp. 1924 Broadway, Oakland 12, Calif. PORTER, Sidney C. (Rl Box 34. East Liverpool, Ohio i Consultant) PORTER. Wallace S. (W ) Universal-Rur.dle Corp.. Box S3 Hondo. Texas PORTS. David W. 212 N. McCullough, Urbana. 111. POSEY IRON WORKS, INC. (Frank A. Fix) Lancaster, Pa. POSLUSZNY, Raymond F. <X' 242 E. Meehan Ave. Philadelphia 19. Pa. (Refractory Specialties Co.) POST, Benjamin F. (R I) J. Cortland Grinding Wheeis Corp. Chester, Mass. POST. Zarr A. (W ) 020 Elm St. Bethesda, Washington 14, D. C. (Meipar, Inc.) POSTE. Emerson ?. (EFI) 616 Baldwin St.. Chattanooga 3. Tenn. (C o n su ltan t) POSTLEW AITE, Donald E. (W I) Universal-Rundle Corp., Box 300 Redlands. Calif. PO TTER. Alan 35 Shepard St.. Rochester. N. Y PO TT E R . John F. (R) Bell Telephone Lab. Murray Hill. N. J. POTTERS SUPPLY CO. (William W. Irwin) 1! Washington St. East Liverpool, Ohio POTTIER. Henri Cie. Generale d'EIectro-Ceramique 12 Rue de la Baume. Paris 3*. France PO TTS. Amos ? . ( S r ) 359 E. Main St., Logan, Ohio (Logan Ciav Products Co.) POULOS. Nick E. (B) 1764 Fiagier Ave. N. E.. Atlanta. Ga. (Georgia Institute of Technology) POULTCN. Rcb-rt F. (W) 2763 N. Congress Rd.. Camden 4. N. J (Universai-Rundle Corp.) POUNDSTON'E. William W. (G) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22. Pa. POW ELL. John A. (W ) 429 5. West End Ave.. Lancaster. Pa. (Radio Corp. of America) P O W E L L . Lee F. (M) Otd Hickory Clav Co. Box 271. Paducah. Ky. PO W ELL. O. E. (SO Indiana Drain Tile Co.. Inc.. Box 66 Brooklyn, Ind. POW ELL. Richard H. (M) 1279 N. Main St., Jamestown, N. Y. PO W ERS. Don W. 1201 Highland Ave., Abilene, Texas POW ERS. George H. (R) 261 Woodfield Rd. W ashington Township W estwood P. O., N: 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) Bausch Sc Lomb O ptical Co. 635 St. Paul St., Rochester 2, N. Y*. PRACHANKHADEE, Manoon Dept, of Science, Ministry of Industry Bangkok, Thailand PRALOW , W alter E. L. Zahnfabrik Wienand Sohne Sc Co., Krs. Offenbach/Main Sprendlingen, Germany PRATT. Donald S. (E) 3422 Eighth Ave.. Beaver Falts, Pa. ( Ingram-Richardson Mfg. Co.) R o s t e r 8. PRECISION GRINDING W H E E L CO.. INC. (A lexander M. Slakeiv) 8301 T o rre sd a ic Ave. Philadelphia Jo. Pa. PRESCOTT. Frank R. (G) '311 Kimbail Ave . Arnold, Pa. fittsburgh Plate Glass Co.) ? . .SEY. Clive (Mi Minatron Corp.. Belle Mead, N. J. PRESTON, Prank \V. (Gi Preston Labs.. Box 149, 3utler. Pa. PR EW ITT , J. K. (S) Elgin Standard Brick Mfg. Co. Elgin, Texas P R E Y . Arthur H. (MI) Carborundum Co., Niagara Falls, N. Y. PR IC E, Glen M. (R ) General Refractories Co., Box 1673 Baltimore J. Md. PRICE, James E. (R I) 19S6 Guernsey Ave., Abington, Pa. (Simonds Abrasive Co.) P R IC E , J. Russell (D ) "Fairm eadow s" Box 211, R. R. J Esm ond 17, R. I. (D oulton 4 Co., Inc.) PRIDDY. X. O. (S) Barium Reduction Corp. South Charleston 3, W. Va. PRIESTLEY. J. Edward Huntly 3rick 4 Fireclay Co., Ltd. Box 4, Huntly, New Zealand PRIMM. Herbert E. (R) 1658 Elevado Ave., Arcadia, Calif. (Harbison-W alker Refractories Co.) PRIN CE. Alan T. (B I) Mines Branch, Ottawa. Ont., Canada PR IN D LE. William R. (G) Hazel-Atlas Glass Co. I5th & Jacob Sts.. Wheeling, W. Va. PRIO R. Gordon M. (M ) Box 101. Scotch Plains, N. J. (W hittaker, Clark 4 Daniels, Inc.i PRIOR. Harold D. (M I) \025 Connecticut Ave., NAV. iVashington 6, D. C. (Titanium Alloy Mfg. Div., National Lead Co.) PROCTOR. Thomas M.. Jr. (GJ) Coming Glass Works Coming. N. Y. PROCTOR. W. J.. Jr. (B) Southern Clays, Inc., Gordon. Ga. PROKOPEC. Robert (G) 309 N. Tillotson Ave., Muncie, Ind. (Ball- Bros. Co., Inc.) PROKOPOW ICZ. Thomas I. ( 3 J) Sprague Electric Co. North Adams, Mass. PROM AT D IV ISIO N . PO O R & CO. (W. F. Stark) 851 S. M arket St. W aukegan, lit. PRYOR. Edward K. (R) 902 N. Acacia. Whittier, Calif. (Pryor-Giggey Co.) PUCKETT. John P,, Jr. (G) Leeds 4 Northrup Co. 4901 Stenton Ave.. Philadelphia 44, Pa. PUERTO RICO CLAY PRODUCTS CORP. (O scar Gonzalez Cabanillas) Box 4729 San Juan. Puerto Rico PUI. W ong Yuk Castle Peak Ceramic Co., (1940) Ltd. Castle Peak. N.T.. Kowloon. Hong Kong PULLIAM . George R. (B) 6920 M orrison PI., Madeira, Ohio (C incinnati Milling M achine Co.) TULS. George (R) Acme Brick Co. Box 425, F ort W orth, Texas i -L S . Josef "Austria" United Enamel' Works Wilhelminenstr. 30 Vienna XVI, Austria Vol. 35. No. 10 (10.50) PL'MPHREY. William 1. Murex Welding Processes Ltd. Hertford Rd. Waltham Cross. Herts. England PUNTNEY, L. E. (R !) 908 E. Jackson. Mexico. Mo. (Mexico Refractories Co.) PL'PULIDY, Alexander (Hi 3531-85th St.. Apt. ;K Jackson Heights 72. N. Y. (Arabian American Oil Co.) PURCELL. Burnette (S) Northwestern Terra Cotta Corp. 1750 Wrightwood Ave.. Chicago 14, 111. PURNELL, Hugh J. (R) 761 Loretta St., Pittsburgh 17, Pa. (United States Steel Corp.) PYRO REFRACTORIES 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) Battelle 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 Nacional Ceramica y Anexos Casilla Postal 845, Lima, Peru RABE, N. A. (W ) 10 W. Palmer Ave., Collingswood, N. J. (Universal-Rundle Corp.) RABIN. William J. fW) 19A-1 Redfield Village. Metuchcn, N. J. (Ferricore. Inc.) RADCZEWSKI. Otto-Em st Institut fur Gestcinshutter.kunde Mauerstrasse 5. Aachen. Germany RADIO MATERIALS CORP. (R. D. Bourgerie) 3325 N. California Ave.. Chicago 18. 111. RAGATZ, Eugene C. (M) Allen-Bradley Co. 136 W. Greenfield Ave, Milwaukee 4, Wise. RAGGON. Frank C. (G) 4202 Bowen Rd.. Toledo 13. Ohio (Owens-Illinois) RAHE. Villem Box 233, Alfred. N. Y. RAIBLE. A. J. (W) Briggs Manufacturing Co. 415 W. Seymour Ave. Cincinnati 16. Ohio RAINE. Frank F. (RI) 111 E. Vine St., 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. East Hecla Works. Sheffield 9, England RALSTON, O. C. (MF) 4333 Clagett Rd.. Hyattsville, Md. (U. S. Bureau of Mines) RALSTON. Thomas E. (R) Harbison-Waiker Refractories Co. 1800 Fanners Bank Bldg. Pittsburgh 22, Pa. RAMM, Erie H. L. Brisbane & Wunderlich Ltd. Lord St., East Perth. West Australia RAMSDELL. John L. (E J) 17 Ellicott Ave., Batavia. N. Y. RAMSDEN. C. E. C. E. Ramsden & Co. Ltd. Foley Colour 4 Chemical Works Fenton. Stoke-on-Trent. England RAMSEY. Thomas H.. Jr. (BJ) 1615 Homewood PL, Dallas, Texas RAM TITE CO. (Louis J. Jacobs) 2563 W. 13th St.. Chicago 3, 111. RANDALL. Theodore A. iD.l State University of New York College of Ceramics, Alfred. N. Y. R A N D O LPH . Hai F. (R) Mexico Refractories Co.. Mexico. Mo. RANDOLPH. Robert L., Jr. (BJ) 2 N. Parkcale Dr., Chattanooga. Ter.n, ^American Lava Corp.) RANKIN, James E. Box 502! State College Sta. Raleigh. N. C. RANKIN. James J. (M) St. Joseph Lead Co., Box 97 Monaca, Pa. RAXKINE. Adam S. (R) Martinsville, N. J. (Johns-Maaville Corp.) RAPP, Carl H. (W I) Globe-Union, Inc., 900 E. Keefe Ave. Milwaukee 1, Wise. RAPP, S. W.. Jr. (W) Morton Pottery Co. 315 W. Jefferson St.. Morton. 111. RASMUSSEN. R. X. (G) Mississiopi Glass Co., Fullerton. Calif. RASMUSSEN. W ayiand G. (S) Mason City Brick 4 Tile Co. 200 3rick & Tile Bldg. Mason City, Iowa RASSNER. Donald D. (SI) 1500 Alabama Ave., Jasper, Ala. (N atco Corp.) RATCLIFFE, Harry J. (M) 724 Bunker Hill Ave., Trenton, N. J. (Unique Kilns of Trenton, Inc.) RATCLIFFE. Temple W. (R) 244 Buffalo St., Beaver, Pa. (Babcock 4 Wilcox Co.) RATHMANN, Clyde L. (G) R. R. 3. Corning, N. Y. (Corning Glass Works) RAUCH. H arry W. CG) 342 Spring Ln.. Bridgeport, ?a. (Foote M ineral Co.) RAUSCHER. Louis C. (G) 2374 Geneva Av;., Cltnsice. Pa. (Phiico Corp.) RAY, E. Harold (M) B. F. Drakenfeid 4 Co., Inc. Box 519. Washington, Pa. RAY. John G. (G) Sylvania Electric Products, Inc. Cottage Place. Mineoia, L. I,, N. Y. RAYTHEON M ANUFACTURING CO. (Leo J. C ronin) Foundry Ave. W altham 54, Mass. RAZEY. Roben M. (R) 486 Ashland Ave.. Detroit 15, Mich. (Great Lakes Steel Corp.) REA. Robert F. (W I) Stupakoff Div.. Carborundum Co. Latrobe. Pa. REAGAN, Cornelius J. (S) 532 Woodmont St. East McKeesport, ?a. - ' ' (Van Ormer Brick Co.) REAGAN, M ichael M. (E) Stamped 4 Enamelled W are Ltd. Guelph Ave.. Hespeler, Ont., Canada REBCHOOK. Gregory V. (W ) Radio Materials Corp. 1708 W. Belmont Ave. Chicago, 111. REDW INE. Richard H. R. R. 1. Rural Hall. N. C. RED WING POTTERIES, INC. (Thomas M. Arnold) Red Wing. Minn. REECE. Charles W. (XJ) 105 S. Miller St,, Greer, S. C. REED. A. J. (S) 521 W oodbine St,, W illard. Ohio (N ational Clav Pipe Research Corp.) REED. Carl E. (G) 1410 E. Main St.. Lancaster, Ohio (Sharp-Schurtz Co.) R oster 37 tE E D . George C.. U I (BJ) 413 S. 25th 5:.. Apt B-3 South Bend. Ind. (3end:x Aviation Corp.) HEED, Madison V.'., Jr. SOI Ave. "G". Austin, Texas S , Paul H. (R; a1/ , Fairmont Avc., New Castle, Pa. (New Castle Retractories Co.) REEVES. Harold. Sr. (W) rhipacrick industries Inc. r.(jx 30. East Palestine. Ohio REFRACTORIES INSTITUTE, THE (Avery C. Newton) First National 3ar.k Bids. Pittsburgh 22, ?a. REFRACTORY 4 INSULATION CORP. (A. S. Arwine) For: Kennedy, Pa. R EG EN B R EC H T. Albert. Jr. (G) Sylvania Electric Products, Inc. B urlington. Iowa REGOUT. Joseph F. E. N. V. de Sphinx, Maastricht, Holland REGOUT. L. F. H. N. V. Porseiein en Tegeifabriek Mosa Meerssenerweg 358. M aastricht, Holland REID. Frank ?. American Ceramic Society 4055 N. High 5t,, Columbus 14, Ohio R E ID . H arry F.. Jr. (M) McKay Co. SSO Grantly Rd., York, Pa. REIM AN N. A. Gilbert (W) 114 P inehurst PI.. Schenectady 4, N. Y. (General Electric Co.) REIM ER. John J. (W I) Keystone Ridgeway Corp. Gettysburg. Pa. REIN. Peter (W) 1746 W. Sycamore, Kokomo. Ind. (Kokomo Sanitary Pottery Corp.) p -'N K E R . Arthur G. (R; phns-.Manviile Sales Corp. .530 Guildhall 31dg. Cleveland 15. Ohio REINK ER. Gerald E. (G) General Electric Co., Lamp Div. 1133 E. lS2r.d S:.. Cleveland 12, Ohio REISCHEL. Frank ;W ) 2733 Mayflower. Arcadia. Calif. (Diiectron Inc.) R EISIN G. Joseph A. (M l St. Joseph Lead Co., Zinc Smelting Div. Monaca. Pa. R EISS. Max S. (E) 85 Howell St.. Canandaigua. N. Y. REM DE. H arry F.. Jr. General Ceramics Corp. Keasbey, X. J. REM INGTON. Victor H. (GI) 3. F. Drakenfeld Sc Co.. Inc. Box 519. Washington. Pa. REMMEY. G. 3ickley (RF) Richard C. Remmey Son Co. Hedley St. it Delaware River Philadelphia 37. pa. REMMEY, John G. CR) Richard C. Remmey Son Co. Hedley St. & Delaware River Philadelphia 37, Pa. REM MEY. RICHARD C . SON CO. (G. Bickley Remmey) Hedley St. it Delaware River Philadelphia 37, Pa. REMPES, Paul E,, Jr. (BJI) 54S2 Mitcheil Dr.. Page Manor Dayton 3. Ohio (United States Air Force) RENFREW . J. Harvey (S) 31 Linden Park St., Roxbury 20, Mass, (Herman G. Protte) RENOUF, Leonard J. (R) 342 Church St., Youngstown, N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) V ol. 35, N o. 10 ( 1956) RENSKERS, Richard H. (W lj American-Standard Box 736, Kokomo. Ind. REPUBLIC STEEL CORP. (Burton Longwell) 1423 Republic Bldg. Cleveland 1. Ohio RESCHETZ. Raymond R. 16155'- W. Park. Champaign. 111. RESER. Margie K. 977 Carlisle Ave., Columbus 11. Ohio (American Ceramic Society) REUSING. Charles R. (R) 545 Boulevard. Westr.eld. X. J. (National Retractories Co.) REUNING. George W,, Jr. (RI) 279'/i E. Main St.. Frostburg, Md. (Big Savage Div., Mexico Retractories Co.) REUSCHE. Frank L. (W) 60 Congressional pky., Livingston. N. J. ( L. Reusche 3c Co.) REUTER. Raymond (R) National Aluminate Corp. 6216 W. 66 PI.. Chicago 38. III. REYNOLDS. Harry M. (G) Renite Co.. Box 363, Sta. A. Columbus. Ohio REYNOLDS METALS CO. (L. S. Beeler) 2S00 S. Third S t- Louisville. Ky. RHOADS. James L. ( BJ) 1410 Springside Dr.. Lancaster. Pa. (Radio Corp. of America) RHODES. Foster T. (W) Onondaga Pottery Co. Syracuse 4, X. Y. RHODES, Fraser B. (WF11 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. Ralrh R. (RF!'' 1729 Powell S t- Norristown. Pa. (E. J. Lavino it Co.) RHODES. William H. - Box 827. Alfred. N. Y. RICCI. Edward Michael (RJI) 817 Main S t- Dickson City. Pa. (Harbison-Walker Refractories Co.) RICE. George A. (W) General Electric Co. Campbell Ave. Plant. Rm. 459 Schenectady, N. Y. RICE. Hal H. (WI) 451 Vinewood AveBirmingham. Mich. (General Motors Corp.) RICE. Murray J. (B) Box IS3. Alfred. N. Y. (State University of New 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-G'mori) 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. N. Y. RICHMOND. Joseph C. (E FI) 4822 Morgan D r- Chevy Chase IS, Md. (National Bureau of Standards) RICHTER. Charles J. (G) Box 275, Canfield; Ohio P.1CK. Clarence A. .R i Box 62. Columbiana, Ohio (K aiser Aluminum 4 Chemical Corp.) RICKER. Richard W. '.ED Aluminum Co. oi America Alcoa Research Labs., Box 772 New Kensington. ?a. RICKEY. Charles J (V.'J) 3. r . Draker.teld 4 Co.. Inc. W ashington. Pa. RICKEY. J. H... Jr. I.K! Iror.ton Fire Brick Co. Box 536. Irontcn. Ohio RIDDLE. Frank H. (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. R IEPER . Gerald 394 P a n ta e l C t- Ames. Iowa RIGBY, James E. (G) Blue Ridge Glass Corp. Kingsport. Tenr- RIG TERIN K . Merle D. (3 F ) Beil Telephone Labs. Murray HUI. N. J. RIIS. 'Asgeir (M) Robeson Process Co. Box 960, Erie. ?a. R IK ER . Leon W.. Jr. (G) 111 Rebecca St.. Kittanning, I'a. ( P ittsburgh Plate Glass Co.) RILEY. Roger R. (R) _ 1774 Danesta Dr., Concord, Calif. (Gladding. Mc3ean 4 Co.) RIXDONE. Guy E. (G) Department of Ceramic Technology Pennsylvania State University University Park. Pa. RINGEN. Robert E. (M) Paul O. Abbe Co.. 143 Center Ave. Little Falls. N. J. R ISPLER . Z. W. Palestine Glass Works "Phoenicia" Ltd., Box 168 Haifa. Israel RITLA X D . Harold X. (G) 14732 Eastgate Dr.. Bellevue. Wash. (B oeing Airplane Co.) RITT. P. E. (W; 1325 S. George Mason Dr. Arlington. Va. (Melpar. Inc.) R ITTER , Joseph S. (G) Adamston Flat Glass Div., Rolland Glass Co., 3ox 631 Clarksburg, W . Va. RITTLER. Hermann 12 N. Wayne St., Phelps, N. Y. RITZ. Joseph W . (G) Sylvania Electric Products, Inc. 83-30 Kew Gardens Rd. Kew Gardens. L. I., N. ,Y._ ROACH. H. C. (R) American Radiator & Standard Sanitary Corp. 40 W . 40th St. New York 18. N. Y. ROBB. Richard 3. (G) 209 Vine St,, Pittsburgh 18, Pa. (U nited States Steel Corp.) RO BBIN S. M artin D. 86-15 E lm hurst Ave. E lm hurst, Queens, N. Y. ROBBINS. Ross W,, Jr. (RJ) 3t May St.. Worcester, Stass. (N orton Co.) ROBERSON. Cletis L. (G) 350 Mouil St.. Newark, Ohio (Owens-Coming Fiberglas Corp.) ROBERTS, Gerald J. (S> Mineral Weils Clay Products, Inc. 205 X. W. Seventh St. Fort Worth. Texas R oster S9 jB ER TS. John Taggart 419 Park 3!vJ . G!en Ellyn, 11!. (Crane Co ! O B E R T S . John W. (S ) 3204 Hawthorne Ave.. Richmond 23, Va. (Southern Lightweight Aggregate Corp. i O P v RTS. Nlervin rra rc is ( E.i , Carpenter Ave. /stwood. Tuckahoe 7, N. V. (de Lackr.er Helicopters. Inc..1 2ERTSON. James A. (R) Westvaco Mineral products Die. Box 337. Newark, Calif. '.O BERTSO N , Jean M. (E) 3008 Rosedale Blvd., Louisville 3, Kv. (American Radiator Sc Standard Sanitary Corp.) ROBERTSON. Leon F. (G) Brockwav Glass Co., Inc.. Brockway, Pa. ROBERTSO N. Randal K. (S) 906 University Tower Bldg. . Montreal, Que.. Canada (Laprairie 3rick Sc Tile. Inc.) R OBERTSO N, R. K enneth (S) 133 T hornton Ave. Mt. Royal. Que., Canada (L aprairie Brick St Tile, Inc.I ROBESON PROCESS CO. ('A sgeir Riis) Box 960, Erie. Pa. R O B IL L A R D . H arvey J. (R ) - Exolon Co., 1000 E. N iagara St. Tonawanda, N. Y. ROBINETTE, Oren, Jr. Box 2234, Clemson College Sta. Clemson, S. C. RO BIN SO N CLAY PRODUCT CO. (\V. E. Robinson) Box 1070 65 W . State St., Akron 9, Ohio ROBINSON. F. George (S) 500 S. Santa Fe Dr., Denver, Colo. (Robinson Brick St Tile Co.) R O B IN SO N . Gilbert C. !SF) Box 91, Clemson, S. C. (Clemson College! " '~>BINSON, Louis G. (E) 'Louts G. Robinson Labs. Box 761. Cincinnati 1. Ohio R 0 3 IN 3 0 N , Percy BurrlU Diamond Clay Co. Ltd. Hartshill. Stoke-on-Trent. England ROBINSON. Phillip 23 Pyrr.ble Ave. Pymbie. N.S.W.. Australia (Gallard St Robinson Pry. Ltd.) ROBINSON. Richard E. iR l) Johns-Manviile, Zelienople, Pa. ROBINSON. Richard R. (S I) 2232 Parkway 3Ivd.. Alliance. Ohio (Alliance Clay Product Co.) ROBIN SON VENTILATING CO. (J. L. Henderson. Jr.) Zelienople. Pa. ROBINSON, W. E. (R) Robinson C.ay Product Co. Box 1070. 65 W. State St. Akron 9. Ohio R O B IN SO N . William L. 112 W. Sixth St.. Fulton. Mo. ROBSON, H. L. (G) 2 W ater St.. Lewiston. N. Y. (Olin Mathieson Chemical Corp.) ROBSON, James T. (M FI) Allied Engineering Division Ferro Corp., 4150 E. 56th St. Cleveland 5. Ohio R O B SO N . W illiam G. (R) Atomics International 21600 Vanowen, Canoga Park, Calif. ROCHE. L. C. (G F) Maryland Glass Corp. 2147 Wicomico St., Baltimore 30, Md. ROCHESTER, Thomas W., Jr. (G) 210 Delevan Ave., Corning, N. Y. (Corning Glass Works) ROCHFORD. David S. Box 737, Alfred, N. Y. Vol. 3.1, No. 10 ( 19.10) ROCHOW, W. F. i RF i Harbison-Walkrr Refractories Co. 1800 Farmers Sank Bldg Pittsburgh 22. Pa. ROCKFORD BRICK 4 T IL E CO. (G. H. Galvin, Jr.) Rockiord, Iowa ROCKWELL, Dale L. Missouri School of Mines Jackling Gym, Roila, Mo. RODEFER, Howard H. (G) Rodefer-GIeason Glass Co. Box 550, Bellaire. 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. (B I) 29 Pine St.. Frar.klinville, N. Y. (Hi-Q Div., Aerovox Corp.) ROE, Lawrence A. (G) 234 Sheridan PI.. Lake Bluff, III. (International Minerals 4 Chemical Corp.) ROFF. Robert W. (M) Bell Operations 433 Birch PI., Westfield. N. J. ROFF. W. Wallace CM) 14 Glenside Dr., West Orange, N. J. (W hittaker, Clark 4 Daniels. Inc.) ROGATZ. Alvin (B) Maida Development Co. 214 Academy St.. Ham pton, Va. ROGERS. Edwin J. (W I) Scintilla Div. Bendix Aviation Corn.. Sidney, N. Y. ROGERS. Gregory L. fR) 9500 S. Norwalk Blvd. Los Nietos. Calif. (Pacific Clav Products) ROGERS. Melvin F. (G I) 55 Goff St.. Corning. N. Y. (Coming Glass Works) ROGERS. Virzil L. (G'i Hebron Brick Co.. Hebron. N. D. ROGERS. William R. (R) Carborundum Co. Refractories Div.. Niagara Falls, N. Y. ROLKE. Herbert J. fl) Sociedade de Engenharia Industrial Rua Marconi. 23.8' andar Sao Paulo. Brazil ROLLMANN, Peter Esunalaan 11, 3aarn. Netherlands (Anker Emaiile Fabrieken N.V.) ROMANO. Pasquale J. (W ) 1212 Cavalier Ln.. West Chester. Pa. (Foote Mineral Co.) ROMINE. Donald J. 606 S. Monroe St., W est Frankfort. 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. R O SE 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) ............................. . . J789 Gold St., Apt. 5 Los Alamos. N. M. ROSENW INKEL, Ceorge O. (R) North American Refractories S9 E. Van Buren, Chicago 5. 11!. ROSICLARE LEAD 4 FLUO RSPAR M INING CO. (J. 3lecheisen) Rosiclarc. 111. ROSLUND. J. A. (R) Globe Brick Co., 3ox 765 East Liverpool, Ohio ROSS. Donald W. ( RFI) S929A Cakhurst PI., St. Louis 12, Mo. (Consultant! ROSS. Howard, Il (EJ) R. R. 1. Kane. Pa. (Ferro Corp.) ROSS. John A. (G) Coming Glass Works, Corning, N. Y. ROSS. Stuart T. (B) 901 Brooklawn Rd. Birmingham, Mich. (Chrysler Corp.) ROSS-TACONY CRUCIBLE CO. (A. M. Johnson) Robbins 4 Milnor Sts. Philadelphia 35, Pa. ROTH. Harper D. (M) East River Rd., Grand Island, N. Y. (H arper Electric Furnace Corp.) ROTHERMEL. Joseph J. (G) Coming Glas Works, Research Lab. Coming. N. Y. ROUDABUSH, Henry L. (R) General Refractories Co. 3201 Fruitiand Ave. Los Angeles 58. Calif. ROUDABUSH. Ned W. (R) 311 Cantllewood Rd.. Broomalt, Pa. (General Refractories Co.) ROUP. Rolland (W FI) Globe-Union Inc. 900 E. Keefe Ave. Milwaukee 1. Wise. ROWE. Arnold E. (E) R. R. 1. Nebo. N. C. ROW LAND. Donald A. (W) 3 Maple St.. Bath, N. Y. (W estinghouse Electric Corp.) ROWLAND. Richards A. (B) Exploration 4 Production Res. Div. Shell Development Co. 3737 3ellaire Blvd.. Houston 2S, Texas ROW LAND. 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 111. Benares Hindu Univ. Benares, India ROY. James W. (B) W est St.. Lenox, Mass. (General Electric Co.) ROY. Rustum (B) Pennsylvania State University 221 Mineral Sciences Bldg. University Park, Pa. ROYAL CHINA. IN C. (B. L. Miller) Sebring, Ohio ROYAL. Herbert F. (W F) 84S Pilgrim Rd.. Birmingham, Mich. (Champion Spark Plug Co.) ROYAL COPENHAGEN PORCELAIN MANUFACTORY 4 THE FAIENCE MANUFACTORY ALUMINIA (Chr. Christensen) Smallcgade 4$ Copenhagen F., Denmark ROYER. Rene Ingenieur-Conseil (E.C.P.) ' 60. Rue DTssy, Vanves (Seine) France RUARK, A. E. (G) Box 2041, University. Ala. (University of Alabama) Roster 01 R U B I O . Diego P. 89 New York. Cubao Quezon Ci:y. Philippines SUDD, Richard D. (Ml Carborundum Co. 3.335 W. 47-jb St.. Chicago 9, III. SUE. Charies V. (BI) 143 Lindsay Arc.. Tiffin, Ohio '.Sterling Grinding Wheel Co.) KUECKEL. W alter C. (RF) Koppers Co.. Inc., Hoppers Bldg. Pittsburgh. Pa. RUGG, Ormuad I. (G) 13615 Meyers Rd., Detroit 27, Mich. (F ord Motor Co.) HUGH. Kenneth A. (R) Garfield Refractories Co. Bolivar. Pa. RUH. Edwin (R) 789 F ruithurst Dr. P ittsburgh 34, Pa. ( H arbison-W alker Refractories Co.) RUH. Robert (RJ) 162 Diana Ln., N.. Fairborn, Ohio fW rig h t Air Development Center) RUIZ. Jorge Martin (R) Amerex Ingenieros. S.A., Ixtaccihuatl 6 flnsurgentes 4 Aguascalientes) Mexico II, D. F. RUIZ, Robert A. (R) 114 W. Heme St., Vandalia, Mo. (W alsh Refractories Corp.) RULO N. Richard M. (G) Sylvania Electric Products, Inc. 60 Boston St., Salem, Mass. RUSHMORE, Murray, Jr. (M) Moore 4 Munger 33 Rector St., New 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 RUSSELL, Charles K. (R) 13 Mars St.. Mexico. Mo. (A. ?. Green Fire Brick Co.) RUSSELL. Howard F. (E l) 3118 Woodworth ?!. Pottowatomie Hills. Hatelcrest. 111. 'Ingersoil Products Div., Berg-Warn er Corp.) RUSSELL. Leslie A. (G) Hazel-Atlas Glass Co. Washington, Pa. RU SSELL. Lewis E. 20 K irk Close. Oxford. England (U. K. Atomic Energy Authority) RUSSELL. Norman Keith (R I) 24 Longcorse Ln., Paoli, Pa. (Richard C. Remmey Son Co.) RUSSELL. Ralston. Jr. (X FI) Dept, of Ceramic Engineering 126 Lord Hall. Ohio State University Columbus 10. Ohio RUSSELL. Robert G. (G) R. R. 2. Granville. Ohio (Owens-Corning Fiberglas Corp.) RU STLESS IR O N CO.. LTD. (H . W hitaker) Lawkholme 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. Larry D. Box E, Gig Harbor, Wash. RYCKMAN, 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) Coors Porcelain Co. 600 Ninth St.. Golden. Colo. Vol. 35. N o. 10 ( 1956) RYNDERS. Gerald F. (31) National Bureau of Standards Div. 9.1. Washington 25, D. C. RYSHKEWITCH. Eugene (R) Kearfott Co.. Inc. 142 Getty Ave., Clifton. X. J. S SADA. Patricio (E) Troqucies 4 Esraaltes S. A. Apartado Postal 371 Momerrcv N. L.. Mexico SAGIXOR. S. V. (W) Gladding, McBean 4 Co. 2901 Los Feliz Blvd. Los Angeles 39, Calif. SAIBEL. Edward (G) Carnegie Inst, of Tech. Sehenley Park, Pittsburgh 13. Pa. SAILER, Edward (BJ) Radio Corp. of America RCA 3tdg. 55-2, Harrison. N. J. SALEEBY. Edward C. (Si J. C. Steele 4 Sons. Inc. Box 951, Statesville, X. C. SALIXAS. Mario (G) Montes Carpatos 625 Mexico 10. D. F., Mexico (Vidriera Mexico, S.A.) SALISBURY. Charles W. (G) R. R. 1, Wayne. Ohio (Kimble Glass Co.) SALISBURY, William R. (W) Lyndon Rd., Fayetteville, X. Y. (Onondaga Pottery) SALTMAX, Donald (R) 107 Bonito. Long Beach 2. Calif. (Douglas Aircraft, Inc.) SAMMONS. Frederick C. (R) General Refractories Co. 3247 Fruitlacd Ave. Los Angeles 58, Calif. SAMPSON. J. Leonard (G) Mahoning Glass Work. General Electric Co.. 403 N. Main St. Niles. Ohio SAMPSON. John W. (M) Lindberg Engineering Co. Box 313. East Longmeadow, Mass. SAMSON, A. William (G) B. F. Drakenfeld & Co. Inc. Box 519, Washington. Pa. SAMUEL, Donald G. (R) E. J. Lavino 4 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 313 Chicago 54. 111. SANDERS. Herbert H. (D) 17926 Daves Ave.. Los Gatos, Calif. (San Jose State College) SANDERS. Loren D. (BJI) 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. Gteborg, 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 . Jo hr. W. ( W ) Universal-Rumilc Corp. Mt. Vernon 4 Orchard St. Camden. X. J. SA XTOM IES1. S. Lewis (W I) Box 3, Botkins, Ohio (Botkins Engineering) 5ARAKAUSKAS. Raymond (3) National Carbon Co.. Research Labs. Box 5116, Cleveland 1. Ohio SARGENT, Edward C. (Ri Zirconium Corp. of America Solon. Ohio SARRAF, Edward M. (R) 20001 Laurel Ave. Rocky Rive/ 16. Ohio (Harbison-W alker Refractories Co.) SASAKI GLASS MFG. CO., LTD . (Seiichi 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 ER EISEX , C. Fred (M) Sauereisen Cements Co. Sharpsburg Sta.. Pittsburgh 15. Pa. SAULS, J. B. (M I) Funknouser Co., 138 W. Washington St. Hagerstown, Md. SAUNDERS. Alfred C. (R I) Eckhardt Rd., Hamburg. X. Y. (Electro Refractories 4 Abrasives Corp ) SAUNDERS, Hollis S. (E) O. Hommel Co.. Box 475 Pittsburgh 30, Pa. SAUNDERS. R. H. CS) Charleston Clay Products Co. Box 349. Charleston 22. W . Va. SAUNDERS. Richard A. (S) 2626 Larwood Dr.. Charleston, \V. Va. i Charleston Clay Products Co.) SAVELL, Fred H. (M) Western Talc Co. 1901 E. Siauson Ave. Los Angcies 53. Calif. SAVIOLI, Francesco Istituto Siderurgico rinsider Villa 3rignoIe-Corso F. M.. Perrone. 24 Genova-Comigiiano (Italia) SAW AI. lieutaro Kyoto University. Kyoto. Japan SAW YER. E. C. (W ) Central Silica Co., 306 Market St. Zanesville. Ohio SAXE. Charles W. (R) 1 Wawecus Rd.. W orcester 5. Mass. (N orton Co.) SAXONBURG CERAMICS (George H. Aderhold) Box 100 Saxonburg, Pa. SCALES. John B. (BI) 456 Lynn 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 4 Co., Inc.. Box 519 Washington, Pa. SCHA BACKER. H. Eric (E) E rie Ceramic Arts Co. 3120 W. 22nd St.. Erie, Pa. SCHAEFER. Carl F. (W ) 327 Sheffield Ave.. Flint, Mich. (A. C. Spark Plug Div. General Motors Corp.) SCHAEFER. Earl F.. II 102 E. Chalmers, Champaign, I1L SCHA EFLE. Max Thayngen/SH . Switzerland (Tonwerke Thayttgen A. G.) SC H A FER. C. B. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio R oster 93 SCHANER. Burton E. tBJ) W estingnuuse Electric Corp. Box luns. Pittsburgh JO, Pa. SCHATZK1N. Harvey (W) Architectural Tiling Co. Inc, Cass/Jackson Sts.. Keyport, N. J. SCHAL'SS. Edward P. (G) : 1253 Eleanor Ave,, Toledo 1J. Ohio ( Owens-Illinois J SCHELL, Donald C, (E) 2227 S. Gunderson, Berwyn, III. (Armour Research Foundation) SC H IEFFER LE, James A. _(E) 4501 Station Rd,, Ashneld Acres Louisville 5, Ky. (General Electric Co.) SCHIEN E. Quentin J. (R) 7614 K ingston Ave., Chicago 49, 111. (U nited States Steel Corp.) S C H IF F E R L I. Leo M.. Jr. (R) J001 W estmoor Dr.. Kokomo, Ind. (H aynes Stellite Co.! SC H LEG EL. Roland F. Rua Ingiaterra 233, Sao Paulo, Brazil SCHLEHR. W. Raymond (GI) Brockway Glass Co., Inc. Lapel. Ind. SCHLOEMER. Hermann Mineralog. 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. SCHMID. Robert L,, Jr. (R) 125 Croftley Rd,, Shetland Hills Lutherville. Md. (Aluminum Co. of America) SCHM IDT. Beuther L. (R) Anchor Hocking Glass Corp. Lancaster. Ohio SCHM IDT. Wiiliam G. fS) Box 469. Altam ont. N. Y. 'G eneral E lectric Co.) SCHMUNK. Louis (W) 70 Dunedin Dr. T oronto 18, O nt.. Canada (American Radiator 4 Standard Sanitary of Canada) SCHN EIDER. LaVoy H. (E) 5 Maple Ct.. Hamilton Ohio (Ferro Corp.) SC H N EID ER . Matthew ?.. Jr. (S) 2543 Louisa St.. Slidell. La. (St. Joe 3rick Works, Inc.) SC H N EID ER . Samuel J.. Jr. (RJI) 3336 Lancer D r,, West Hyattsviile, Md. (National Bureau of Standards) SCHO ELLK OPF. Robert S. (W ) Carborundum Co. of Puerto Rico Box 1147. Mayaguez. Puerto Rico SCHOENINGER. Irvin W. (WI) 5250 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 Dr., Mexico, Mo. (A. P. Green Fire Brick Co.) SCHOFIELD. H. Zane (W FI) . Koppers Co.. Inc., Research Dept. Koppers Bldg., Pittsburgh 19, Pa. SCHOLES. Addison B. (G) lnterlectric Corp., Warren, Pa. SC H O L ES. S. R. (GF) Box 752. Alfred. N. Y. (S tate University of New York College of Ceramics) SC H O LS. Leon V. F. M. St. Lambertuslaan 4a M aastricht. Holland (R egout-M atthey) VOL. 35. No. 10 (1956) SCHOONOVER. I. C. ;3> National Bureau of Standards Washington 25. D. C. SCHOTSMAN. J. Kruisstraat J I. Diercn. Netherlands (N. V. Enamel Works "de Yssei") SCHOTTLAND. A. H. (G) Standard Ben: Glass Co.. Butler, Pa. SCHOTTS. Walter H. (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. Q air Ave. East Liverpool, Ohio (Homer Laughlin China Co.) SCHRECKENGOST. Viktor (D) 2265 Stillman Rd. Cleveland Heights IS, Ohio (Salem China Co.) SCHREIBER. Edward Box 948. Alfred. N. Y. SCHRICKEL. Herman H.. Jr. (G) 178 E. Pulteney St., Coming. N. Y. (Corning Glass Works) SCHROEDER. Fred W. (RFI) North American Reiractories Co. 1012 National City E. Sixth Bldg. Cleveland 14. Ohio SCHROEDER. Herbert S. (R) 6 Conover La., Red Bank, N. J. (Carborundum Co.) SCHROLL. J. R. (S) Manufacturers Equipment Co. 218 Madeira Ave., Dayton 4, Ohio SCHUCK. John F,, Jr. (WI) R.R. 1, Appie 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 LoZadar, Grandes Fabricas Argentinas de Ccramica. S. A. Boulogne. F.C.N.G.B. Buenos Aires. Argentina SCHULTZ. Donald G. (S) 3119 Woodworth. 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.. Coiumbus 1. Ohio SCHULZE. Robert H. (X) Advanced Vacuum Products. Inc. 22 Liberty St.. Stamford, Conn. SCHUMACHER. William G. (E) 59S6 N. Glenwood Ave. Chicago 40, HI. (National Cylinder Gas Co.) SCHURECHT. H. G. (W FI) Champion Spark Plug Co. 8S2S Butler Ave.. Detroit 11, Mich. SCHURTZ, D. D. (GF) Sharp-Schurtz Co. 301--303 Lincoln Ave. Lancaster. Ohio SCHWAB. Leon B. (R) 214 E. Home St.. Vandaiia, Mo. (Harbison-Walker Refractories Co.) SCHWARTZ. Bernard (BI) 35 Dogwood Dr.. R. R. 2 Downingtown. Pa. (International Resistance Co.) SCHWARTZ. Jerome W. (W) Sascha Brastott Products. Inc. 11521 W. Olympic Blvd. Los Angeles 64, Calif. SCHWARTZ. M. A. (Bl) WCRRL. Aeronautical Research Lab. W.A.D.C. Wrtght-Pattcrson AFB. Ohio SCHWARTZWALDER. Karl (W FI) A C Spark Plug Div.. Genera; Motors Corp. Flint 2, Mich. SCHW EICKHARDT. William K. (R) Walsh Reiractories Corp. 101 Ferry St., St. Louis 7. Mo. SCHW EITZER. Howard V. (M) Schweitzer Equipment Co. 3764 Ridge Rd., Cleveland 9, Ohio SCHW EN KLER. Edward P. 979 Grove St.. Elmira, X. Y. SCHW ENKLER. Theresa A. (G) 979 Grove St., Elmira. N. Y. (Coming Glass Works) SCHWIETE, Hans-Ernst Institut fur Gesteinshuttenkunde Mauerstrasse 5. Aachen, Gennany SCOTT. J. W. (W ) Western Electric Co. Inc. 7650 Hawthorne Station Chicago 23, 111. 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 (Norton C ol 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 Snadcland .-.ve. Indianapolis 6. Ind. SCOTT. William D. 77C7 Water St.. Olmstcad Falls. Ohic SEA3RIGHT. Clarence A. (M) 2201 Wascar.a 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. Si 2300 W. Tuscarawas St. Canton 3. Ohio (Bonnot Co.j SEARCY, Alan W. (Bl Division of Mineral Technology University of California Berkeley 4, Calif. SEARLE. Alfred B. 62, Moorclifte, Skircoat Moor Rd. Halifax, York, England (Consultant) SEARSON. Leslie -- ` James Oakes 4 Co. (Riddings) Ltd. Jacksdale. Notts, England SEATON, Max Y. (RF) Food Machinery 4 Chemical Corp. 161 E. 42nd 5t.. New York 17. N. Y. SEBRIXG. George F. (W ) Paper Makers Importing Co.. Inc. 44 S. Second St.. Easton. Pa. SECKMAN. H arry D. (W I) 220 W. Third. Peru. Id. i (Square D Co.) SECORD, Robert N. (W ) Godfrey L. Cabot, Inc. Research & Development Dept. 38 Memorial Dr.. Cambridge 42, Mass SEDEXKA, Anthony (E) 1086 Magnolia Dr.. W ashington. Pa (B. F. DrakenfeM 4 Co.. Inc.) SEELEY, E. L. (W ) 800 Lotus Ave., Chester. W. Va. (Harker Pottery Co.) R oster 9-! SEEMANN. Wiihchr. Pipersgatan 3, Stockholm. Sweden SEGELER. C. G. (M> American Gas Assn.. 420 Lexington Ave. New York 17, N. Y. SEID EL. Joseph (\V) 1255 E. Orange Sr.. L-anca:er. Pa. I Radio Corp. ot America >EL. Sober: B. (G: Blue Ridge Glass Corp. Kingsport. Tenn. SEITZ, Woiiram (G.i Glas Containers Ir.c. 3601 Santa Fe Ave. Los Angeles S3, Caiit. SELLERS, George A. (R ) 315 E. Crescent Ave., Elmhurst, 111. (Flibrico Co.) SELLERS. John T. (RI) 52 Broadway, Jackson, Ohio (Durex Refractories Co.) SELSIXG. Jorgen (B) 1316 Noble St., Barberton. Ohio (Ohio Brass Co.) SEMMELMAN. John O. (W U Dentists Suppiy Co. of New York College i Grar.tlev 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 ep t, 1700 Sun Life Bldg. Montreal. Que.. Canada SENK, Johann Vienna XVII Dornbacherstr. 29. Austria (Radio Fabrik Ingeien Porzellan Fabrik) S EXTERS. Walter (S) ' Washington Brick 3t Lime Co.. Box 2198 Spokane. Wash. SENTRY SANITARY CORP. (M arvin E. A brams) Box 427 iM annington. W. Va. .PHTON. H. J. (G) Dominion Glass Co. Ltd. Chappie St., Hamilton. Ont.. Canada SERVICE PORCELAIN ENAMEL. IN C (Paul S. Cecil) Brill 3c Christie Sts. Newark 5. X. J. SERVIS. Donald H. < W Robertson Mfg. Co.. Box 348 Trenton 5. X'. J. SESLER. E. Clyde. Jr. fS) 1S29 Alexander Circle. Pueblo. Colo. (Sum m it Pressed Brick 3c Tile Co.) SETCHEL. Hayden Merritt (G) 105 Tenth St.. Streator. 111. (Owens-Illinois) SEVERIN. Harold Box 737, Atfred. X. Y. SEVERSIKE. Carroll L. (W) 2J Race St.. Frenehtow n, X. J. (Frenchtow n Porcelain Co.) SEYBERT. Earl K. (R) Davison Chemical Co. Div. W. R. Grace 3c Co. 101 X'. 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) 35 Chapel St,, Seneca Falls, N. Y. (Sylvania Electric Products, Inc.) SHAH, Chunilal P. Bombay Potteries 3e Tiles Ltd. Pipe Rd.. Kurla. Bombay 37. India ALEK. Peter D. (W ) S26 Lake St.. Oak Park, 111. SHAND. Errol B. (G) 155 Reynolds Ave.. Corning, X. Y. (Corning Glass Works) VOL. 35. No. 10 (1956) SHAX'D, Rodger L. <El 230 Woodale Rd. Oakville. Ont.. Canada (Ferro Enamels (.Canada) Ltd.). SHANDS, Everett H. (E) 1930 Harlem Blvd., Rockford. 111. (O. Hommcl Co.) SHAXER. Herbert J. (R) Ramtite Co.. 2563 W. ISlh Si. Chicago 3. III. SHANKS, Douglas Shanks 3; Co. Ltd.. 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, X. Y. (Sylvania Electric Products, Inc.) SHARDLOW . L. Russel (BI) Radio Corp. of America Harrison, X. J. SHARP, Donald E. (GF) Libbey-Owens-Ford Glass Co. 1701 E. Broadway. Toledo 5. Ohio SHARP. E. W. (R I) Pedro. Ohio 1Lawrence Refractories Clay Co.) SHARPE. Edwin F.. I ll 2255 Kennedy St.. Phitadeiph:a 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. (Coming Glass Works) SHAW, Anthony E. (S) Natco Corp.. 327 Fifth Ave. Pittsburgh 22, Pa. SHAW. Clarence F. (W I) R. R. 2. Trevor. Wise. (Pickard, Inc.) SHAW. L. I. (X I) Q ub DelMar, Santa Monica. Calif. (Consultant) SHAW, Myril C. (M FI) 563 Gates St., Philadelphia 23. Pa. (Asbestos Textile Institute) SHAW. Ronald H. (S) L. E. Shaw Ltd., Box 996 Halifax. Nova Scotia SHAW. Ronaid R. 137 Inglis St. Halifax. Nova Scotia. Canada SHAYXA. Michael (S) 506 S. Railway St. Swift Current. Sask., Canada (Perry Brick 3c Tile Co.) SHEARER. Walter L. (R) Bartley Crucible 3c Refractories. Inc. 15 Muirhead Ave.. Box 3S8 T renton 3, N. J. SHEARER. W ayne B. (E) 27 Fairview Rd.. Paoli. Pa. (Foote Mineral Co.) SHEAROUSE. Lee A. (W ) 326 Highland Ave., Wadsworth, Ohio (Ohio Brass Co.) SHEEHAN. Robert W. (WJ) Box 38, Saxonburg, Pa. (Du-Co Ceramics Co.) SHEETS. Herbert D. (R I) Battelle Memorial Institute _ 505 King Ave.. Columbus 1, Ohio SHELDON. John L. (G) 179 Dodge Ave., Corning, X. Y. (Com ing Glass Works) SH ELDON. R. S. (E) 221S Wilson Cl , St. Joseph, Mich. (W hirlpool-Seeger Corp.) SHELL. Haskiel R. (B) V. S. Bureau of Mines Electrotechnical Experiment Sta. Norris, Tenn. SHELLEY. C 3. (RI) General Refractories Co. 1520 Locust St., Philadelphia 2. Pa. SH ELTON . Philo S. (GJ) 130 Burr St.. Fairfield. Conn. SHENANDOAH SILICA CO.. INC. (Herreid D. Thropp) 190 W. State St,, Trenton S. N. J SHENANGO CHINA. INC. (Geo. B. Zahntser) New Castle. Pa. SHEPHERD, John F. (E I) Shepherd Chemical Co. 2303 Highland Ave, Norwood. Cincinnati 12, Ohio SHERK. Donald (M) 213 Dalton Dr.. Buffalo 23. X. Y. (National Gvpsum Co.) SHERM ER. Herman F. (G) 740 N ortham pton Dr. Silver Spring, Md. (United States Naval O rdnance Lab.) SHERRILL. Ernest (M) Westwood Ceramics Supply Co. 11250 W. Pico Blvd. Los Angeles 64, Caiif. SHERRILL. Robert R. (E I) 425 Car.von Dr.. Glendale 6, Calif. (Bulwark Corp.) SH ERW O OD . Robert F. (W F I) Ford. 3acon 3: Davis United States Operations Mission A.P.O. 74. 3ox K, c /o P.M. San Francisco. Calif. SHEVLIN. Thomas S. (RD Engineering Experiment Station Ohio State University Columous 10. Ohio SH IELD . Richard (WJ) 131 W. H arris. Apt. 7 San Angelo. Texas SH IFF. Tom (R) Villa Ridge Addition, R. R. 2 Godfrey. 111. (Laclerie-Christv Co.. (Div. H. K. P orter Co.) SHIMADA. Hachiro Shimada Glass Laboratory No. 2367. 1-Chome. Sanno Ota-ku. Tokyo, Japan SHIMADA. Kuro Toyo Glass Co.. Ltd. No. a" Shimo-3-Chome Fukusnimaku. Osaka, Japan SHIMER. J. B. (GD Knox Glass Co. Knox. Pa. SH1MMAN. Norman C. (M) 2348 Ventura Dr.. R. R. 4 Wailed Lake. Mich. (Champion Spark Plug Co.) SH IN N . Joseph M.. Jr. (R ) 1908 Ramblewood Rd., Apt. D Baltimore 14. Md. (W estern Electric Co.) SH IPE. Paul J. (R) Moraine Prod. Div.. General Motors Corp. 1420 Wisconsin Blvd.. Dayton 1. Ohio S H IP L E Y . Linden E. (W ) 92 Cresrview Rd.. Columbus 2, Ohio (Orton Ceramic Foundation) SH IPLEY . R. A. (S) - - ` ' Natco Corp.. 327 Fifth Ave. Pittsburgh 22. Pa. S H IP P Y . Gordon D. (E ) 2720 W. Chambers. Milwaukee, Wise. (A. O. Smith Corp.) SHIVELY. R. R. (GF) 83 Woodland Dr., Pittsburgh 28. Pa. (Consultant) SH IVELY. Robert R.. Jr. (G) 2416 Gulf Bldg., H ouston 2, Texas (O lin M athieson Chemical Corp-) SHOEMAKER. George W. (S ) Arkctex Ceramic Corp.. 6 N. Walnut St. Brazil. Ind. SH O FFN ER . James E.. Jr. (G) 118 Cherokee Rd.. Nashville 5, Tenn. (Ford Motor Co.) SHOFSTALL. N. F. (M) General Electric Co. 1311 LeMovne Ave.. Syracuse, N. Y. R oster 97 SH OX EBA RG ER. r . J. :C) General E lectric Co. Glass Technology Lab. 1133 E. 152nd Sc., Cleveland, Ohio 5HOXKW ILER, Francis P. (R!) 2516 Milford Dr.. Pictsburgh 34, I'a. <Harbison-'.Vaiker Refractories Co.i OOK, T hurston W. C.M) 2569 McVey Blvd.. W. W orthington, Ohio t.Harrop Ceramic Service Co..' SHOOK, William 3. (I; 434 Chatham Rd.. Columbus 14. Ohio SHOOT, Lyle . (W J) Box 491, State College, Pa. (E rie R esistor Co.) SH O PH E R . Sterling D. (R I) 1120 E. Jackson, Mexico, Mo. (.Mexico Refractories Co.) SHORTER, A. J. Bonnyoricge Silica 4 Fireclay Co. Ltd. Bounvortuge. Stirling, Scotland SHORTER, W. H. (G) Emhart Manufacturing Co. 333 Homestead Ave., Hartford 2, Conn. SHREM P, Raymond M. (R) 227 S. Clay St., Zeiienople, Pa. (Lava Crucible-Refractories Co.) SHUMAN, Albert (G) Polarizing Instrument Co. Irvington-on-Hudson, New York. N. Y. SICKER. Richard IS7 Park Ave., East Orange, N. J. S ID D IQ I. Iftikhar A. 4223 12th N. E., Seattle 5, Wash. SID W ELL, John L. (M) H. C. Spinks Clay Co., Inc. 1000 Firs: 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 Point 3.-ick Works, Inc. ; 3ox 150. 3eacon. X. Y. tE F E R T . A. C. (G F ) Ower.s-Cornir.g Fiberglas Corp. Newark, Ohio SIEG W ALD. Clyde R. (W I) 4422 San Carios Ave., Tampa. Fla. (Tiffany Tile Co.) SIEKM ANN. John F. (R) Aluminum Co. of America 520 N. Michigan Ave.. Chicago 1J, III. SIEV ERT, Guiiio E. >.R) 833 Oregon Ave., San Mateo, Calif. (Gladding. Mc3can 3c Co.) SIGWART. H arry 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. Kari Messrs. Jury Holloware Ltd. Brieriey Hill, Staffs. England SILVERMAN, Alexander (G FI) University of Pittsburgh 2525 Cathedral of Learning Pittsburgh 13, Pa. SILVERM AN. William B. (G FI) Owens-Illinois, Technical Center 1700 N. Westwood Ave., Toledo I, Ohio SIM AVILLA. Juan M. Crtstaierias Rigollean S. A. Beraxatequi, F.C-N.G.R. Buenos Aires, Argentina SIMCOCK. H. J. "Cranford," Lovatt Ave. Milehouse. Newcastle Stafford. England SIMISON, A. L. (GI) Owens-Coming Fiberglas Corp. Toledo. Ohio SIMMEN, Fred G. (W) 964 Terrace Blvd.. Trenton S, N. J. (Fairfacts Co.) Vol. 35, No. 10 (1956) S1MMINGSKOLD, Bo Glasinstitutet i Vaxjo, Smedjegatan 3 Vaxjo, Sweden SIMMONS. E. E,, Jr. (M) 455 S. Oakland Ave., Pasadena 5. Calif. (Consultant) SIMMONS. George A.. Jr. (Gi Pittsburgh Plate Glass Co. Res. Labs.. Creighton. Pa. SIMMONS. Milton L. (E) Ferro Corp.. International Div. 4150 E. 5oth St.. Cleveland 5. Ohio SIMON. A. G. (W) 8530 Wentworth St., Suniand. Calif. (Gladding, Mc3ean 3c Co.) SIMONDS WORDEN W H ITE CO. (F. R. Henry) 1101 Negley PI. Dayton 7, Ohio SIMONS. T. Mitchell. Jr. (W I) 9136 E. Jaylee Dr. Temple City, Calif. (3 . F. Wagr.er 4 Co.) SIM ON SEN , Eduardo C. Companhia Paulista de Mineracao Caixa Postal 3008, Sao Paulo, Brazil SIMONSEN, Victor G. Ceramica Sao Caetano S. A. Caixa Postal 273. Sao Paulo, 3razil SIM ONSON, Robert B. Harvey Aluminum Co. 190th 3c Western. Torrance, Calif. SIM PSON. Frederick H. (EJ) 1521 W. 51st.. Seattle 7, Wash. (Boeing Airplane Co.) SIM PSON, Harold E. (GFI) State University of New York. College of Ceramics, Alfred. N. Y. SIM PSON. John A. (S) F. B. McFarren Ltd. Streetsville. Ont.. Canada SIM PSON, John D.. Jr. (S) Statesville Brick Co., Box 471 Statesville, N. C. SIN CERE. John F., Jr. (EJ) 5525 W. Henderson Ave. Chicago 41, 111. (Industrial Publications, Inc.) SIN CLA IR. Robert R. (R I) 510 S. Osage Ave.. Inglewood. Calif. (Missouri Refractories Co.) SINGER. Felix (F) Keramos House. 46, Castlemaine Ave. South Croydon, Surrey, England (Consultant) SIQUEIRA, Pedro M. Ceramica 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 4 Tile Co., Ltd.) SIXT. Lawrence F. (W) Cain St., East Liverpool. Ohio (New Castle Refractories Co.) SJOGREN, John K. (R) Prospect St., Princeton, Mass. (Norton Co.) SKEOCH. Thomas A. 608 Second St.. Golden, Colo. SK EO CH. W alter 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. 111. (E. I. du Pont de Nemours 3t Co.) SKURCENSK1, Anton ;G) H. I. Thompson Fiber Glass Co. 1733 Cordova it., Los Angeles 7, Calif. SKWARLO. Edward (G) 706 S. ioka. Mount Prospect, III. (Vacuum Ceramics. Inc.) SLAUGHTER, James A. (G) Pittsburgh Plate Glass Co., Box 15 Crystal City, Mo. SLAUGHTER, John L (3) Corning Glass Works Res. & Development Div. Comtr.g, N. Y. SLAYTER. Games (GF) Ower.s-Corning Fiberglas Corp. Case Ave., Newark. Ohio SLICK. E. E.. Jr. (R) Haws Refractories Co., 407 Main St. Johnstown. Pa. SLUSS, Olen R. (W) Claiborne Towers. Rm. 1026 New Orleans, La. (American-Standard) SLYH. John A. (BFI) American Encaustic Tiling Co., Inc. Lansdale, Pa. SMALL. Cariton F.. Jr. (RJ) 9 Hawthorne Rd.. Cinnamon Hill Bridgeport, ?a. (E. J. Lavino 3i Co.) SMALLEY. Howard F. (E l) Pemco Corp., Research Div. 2554 Gretnmount Ave. Baltimore 13. Md. SMELT. J. A. M. Bibliotheekcentralc N. V. Philips' Gloeilampenfabrieken Eindhoven, Holland SMITH, Adrian F. (G) 86 E. Third St.. Coming. N. Y. (Corning Glass Works) SMITH. Alden J. (W) R. R. I. Carey, Ohio (Porcelain products Co.) SMITH. .'.'Ier. 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 SMITH. C. A. (R F!) Mexico Refractories Co. Better Refractories Bldg., Mexico. Mo. SMITH. Dudley C. :C) Oakdale Dr.. Millville. N. J. (Kimble Glass Div., Owens-Illinois) SMITH. Earl R. (G) Pittsburgh Plate Glass Co. W orks No. 23, Greensburg, Pa. SM ITH. Ellis E.. Jr. (3 ) 527 North St., East Aurora. N. Y. (W hittaker, Clark Sc Daniels, Inc.) SM ITH. Gail (G) _ C om ing Glass Works, Corning, N. Y. SMITH. G. Sherwood Department of Ceramic-Technology Pennsylvania State University University Park. Pa. SMITH. Harlan D. (R) Welisville Fire Brick Co. Wellsville. Mo. SMITH. Harry W. (W) Old Town Rdi, Shelton, Conn. (American Lava Corp.) SMITH. Herbert A. (D) Palm. Fechteler 4 Co., Box 750 East Liverpool, Ohio SM ITH. Hillard A. (W I) 28 Buchanan Rd.. Metuchen, N. J. (Rheem 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 SMITH, James 1 mted Fircciay Fruuucts. Lia. 140 V.' George St. Glasgow C. 2., Scotland SM ITH . James N.. Jr. ID) " A rboriaen". R. R. 5, New Bern, N. C. i.N'e'.v Bern High School/ ilITH. J. Ernest (X) 233 Rjveria Ave., Sarasota, Fia. (Ceram-1-Cast Corp . SMITH. John Jacob (O ' 404 Pacific Ave.. 3rac!<enr:dge, Pa. i Pittsburgh Plate Glass Co.) SM ITH . J. Ryan. (W) Fairfacts Co.. Fairfacrs St. T renton 3, N. J. SM ITH . J. Talbot (M) 217 Elm Ave., Morrisville, Pa. (U nited Clay Mines Corp.) SM ITH. Karl W. (R) Charles Taylor Sons Co. 3ox S3 Annex Sta. C incinnati 14, Ohio SM ITH . Kenneth E. (D PI) American Art Clay Co. 4717 W. 16th St. Indianapolis 44. Ind. SMITH. Leland (SI) Sox 294, Darlington. 3eaver Co.. Pa. (C entral Commercial Co.) ' SM ITH . Peter W. <\V) Gladding, McBcan & Co. 2901 Los Feiiz Blvd. Los Angeles 39, Calif. SM ITH. Ralph Ogden (G) 30 Chestnut St., Salem, N. J. (Gayner Glass Works) SM ITH . Richard D. (I) re rro Corp.. Far East Div. l.iO N athan Rd.. 205 princess Bldg. Kowloon. Hong Kong SMITH. Richard M. (R) 215 Seneca St.. Coming. N. Y. (Coming Glass Works) SM ITH. R. K. (R) 149 Reynolds Ave.. Coming. N. Y. (Coming Glass Works) SM ITH . Ror.aid J. Box 347. Alfred. N. Y. SM ITH. Rowland D. (G) i 2 Woodlawn A.ve.. Corning, N. Y. ICorning Glass Works) SM ITH, R. Thomas 206 W. Ninth St., Rolla. Mo. SM ITH . Rufus J., Jr. (S) 306 S. Jefferson St., Goldsboro, N. C, (E. I. du Pont de Nemours & Co.) SM ITH . Sidney L. 16 Munson St., Le Roy, N. Y. SM ITH 4 STONE, LTD. (T. Wold) Georgetown. Ont.. Canada SM ITH . T. Sydney Brightwood. Va. SM ITH. Walter F.. Jr. (M) United Clay Mines Corp. 101 Oakland St.. Trenton 6, N. J. SM ITH. William E. (G) 5030 Janet. Sylvania. Ohio (Owens-Illinois) SM ITH , William L. (M) H arris Clay Co., Spruce Pine, N. C. SM ITH , William R. 20 DeLancy Dr.. Geneva, N. Y. SMOCK. Alden W. (G) 41 Euclid Ave., Columbus 1. Ohio (N orth American Aviation Inc.) SMOKE. Edward J. (W) II Edgewood Rd.. Mctuchcn, N. J. (Rutgers University) SMOOT, Jack M. (DI) Chamblee. Ga. (Dogwood Ceramics) SMOTHERS. W. J. (B) Ohio Brass Co., Barberton, Ohio SMYLY. Jam es P. (W JI) Box 4123. Chattanooga, Tenn. (A m erican Lava Corp.) Vol. 35. N o. 10 (1056) M Y T H . Harem: <G i New Jersey Cer rr.ic Research Station Rutg er L'ni'i e: :1:T>. New Bruits 1UK, X. j . i.VELL. Richard G G 1717 Calurr.e : A \ c . . Tcietio 7. Ohio ( Libbey-Owcns-rord Glass Co.) S N I D E R , C ar; A.. Jr. i.G) 4320 G irard Rd.. P itts b u r g h 27, Pa. (Kaiser Aluminum i Chemical Saies. Inc.; SNIDER. Stuart M. ..Si 325 Club Dr.. Salisbury, N. C. (Taylor Clav Products Co.) SNODDY. John H. i.W) Gladding, McEean Sc Co. 2901 Los Feliz Blvd. Los Angeles 39. Calif. SNOW. L. James (Si Mifftinvillc. 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 Maple Ave., Trenton 3, N. J. (Rutgers University) SOBON, Leon E. Box 787, Alfred. N. Y SOCIETA ITALIANA RFRATTARI MARGHERA AZIONARIA (Domenico Giacometti) Via Industrie 52, Casella Postale 308 Marghera. Venice. Itaiv SOCIETE FRANAISE DE CERAMIQUE (Y. Letort) 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) "Thomton" Hallam Gare Rd.. Shemeld 10. England SOCONY M OBIL O IL CO. 'W . B. Stevens) ISO E. 42nc St.. New York 7. N. Y. SODERSTRUM. William K. (SI) 374 Davis Rd.. Batavia. III. (Structural Clay Products Research Foundation) SOLOMON. Earl (RI) 1657 Bosten Ridge Rd. Orchard Park. N. Y. (Electro Refractories & Abrasives Corp.) SOLVAY PROCESS DIV.. ALLIED CHEMICAL * DYE CORP. Librarian. Box 271, Syracuse 1. N. Y. SOMANY, O. M. Hindusthan National Glass Mfg. Co., Ltd. 2. Wellesley PL, Calcutta 1, India SOMERS. A. j. Borax Consolidated, Ltd. Borax House. Carlisle PI. London S.W .l, England 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 ) Paden City Pottery Co. Paden City, W. Va. SONENSHINE, Lewis (WJ) 2141 Holland Ave. New York 64. N. Y. (Mucon. Inc.) 0 S 7 Z . Arthur . RI, 3054 S Crandon Ave., Chicago 17, III. (U nited States Steel Corp.) SOSMAN. Roher: B. (Honorary, BFI) School of Ceramics, Rutgers University New 3rur.swick, N. J. SOUTH. Furman. Jr. (RI Lava Crucible-Refractories Co. First National 3ar.k 3lcg. Pittsburgh 22. Pa. SOUTHERN POTTERIES. INC. (H. V,'. Kibier) Box 279 Erwin, Tenn. SOWERS. Robert M. (G) 3 Edgerton Ln.. Dearborn, Mich. (F ord Motor Co.) SOWMAN. Harold G. (R) 1480 Grand Blvd.. Schenectady, N. Y. ( Knolls Atomic Power Lab General Electric Co.) SOXMAN. Edwin J. (I) Box 117. Alfred. N. Y. SPAIN. Richard W. (G) 2315 Drummond Rd., Toledo. Ohio (Owens-Illinois) SPANGENBERG. William C. (M I) 780 E. Fillmore Ave. East Aurora. N. Y. (Titanium Alloy Mfg. Div..) National Lead Co.) SPARKS, Edgar W. (W) 406 Unaka Way, Erwin, Tern. (Southern potteries, lr.c.) SPARROW . Paul F. (R) 2447 Old W ashington Rd. Bridgeville, pa. (N orton Co.) SPEIL. Sidney (GI) Johns-Manville Research Center Manvile. N. J. SPENCE. C. F. (E) 1005 Hartford S:.. W orthington. Ohio (Chicago Vitreous Corp.) SPENCE. Harold I. Klaom Irmaos & Cia Av. Suburbana. 5472 Rio ce Janeiro. Brazil SPENCER. Charles D. (GF) 2113 savior Rd.. Cleveland 12. Ohio (Lamp Dept.. General Electric Co.) SPENCER-STRONG. G. H. ( E r l ) 1C9 Witherspoon Rd.. Baltimore 12. Mil. (Pemco Corp.) SPENGLER. H. H. (G) Gnrai Electric Co. Lamp Div., Glass Technology Lab. 1133 E. !52nd St.. Cleveland 10. Ohio SPERRUNG. Richard F. (GJ) 138 37th St.. N. E. Cedar Rapids. Iowa (P ittsburgh Plate Glass Co.) SPIN KS. H. C.. CLAY CO.. INC. (R. B. Carothers) Box 829 Paris. Tenn. SPINNER. Sam (G) National Bureau of Standards Washington. D. C. SPIRES. Stephen T. (RI) North American Refractories Co. Mt. Union, Pa. SPIR K O . Edward J. Box 827. Alfred. N. Y. SPLANN. Mary Theresa (G) Coming Glass Works, Coming, N. Y. SPOERRY, Henry J. Schmidheiny & Co.. Ltd. Heerbrugg, (StG .) Swiaerland SPRIGGS. Richard M. 408 W. Nevada St.. Urbana, III. SPROAT, Ira E. (W FI) R. T. Vanderbilt Co.. 230 Park Ave. New York 17, N. Y. SPROUL. James D,, Jr. Delevan. N. Y. SPURCK. Richard F. (W) Manford Ln.. W ilton, Conn. ( Machlett Laboratories) R oster 101 SPYL'T. Alber: 3 (O/ Raytheon M anufacturing Co. 35 Chapel S:.. Newton, Mass. SQUARE D CO. (Ralph E. Hanr.a) Moltle-J Insulation Div., Peru, Ind. SQL'1ER, Arthur A. (S} 1616 W a ln u t S:.. Philadelph ia 3, Pa. j ( Distributor i _.A ATLICHE PORZELLAN MANUFAKTUR 3ERLIN (Gerhard MullerJ Kartmonnstroise 1-3 (13a) Seib/Oberfr. U. S. Zone, Germany STAATS. Henry N. (E) Applied Research. Inc. 135 S. LaSaile St.. Chicago 3, 111. STACH. O tto R. (R ) 90 W. Grimsby Rd. Kentnore 23, N. Y. (C arborundum Co. : STADLER. Leo E. (G) 1057 Plymouth St.. Windsor. Conn. (Hartfcrd-Err.pire Co., Div. Enthrt Mfg. Co.) STA iFIC X E R . Charles F. (G) 506 Grandview Ave , Vineland, N. J. ( Kimble Glass Co.) STAFFORD, Ray (M) Southern Calif. Minerals Co. 320 S. Mission Rd. Los Angeles 33, Calif. STAFFORD, W. L. (RFI) Johns-Manvltle Research Center Box 159. Manville, X. J. STAHMANN. John A. (B) 427S Verdugo Rc. Los -Angeles 55, Calif. (Gladding, McBean 4 Co.) STALEGO, Charles J. (G) 227 N. Fifth St.. Newark. Ohio (Owens-Coming Fiberglas Corp.) STALTER. Thomas L. (I) 71 W. Norwtcn Ave.. Coiumbus 1, Ohio 'AM PS. Murray R. (W) Canadian porcelain Co. Ltd. 3ox a23. Hamilton. Ont., Canada STANDARD BRICK 4 TILE ( Clifford A. Kleymeyer) 123 N. W. F ourth St. Evansville 3. Ind. CORP. STANDARD ULTRAMARINE 4 C O LO R CO. (L. F. May) Huntington IS, W. Va. STANGL. J. M. (W ) Stangi pottery, Trenton 4, N. J. STANGL PO TT E R Y (J. M. Stangi) Trenton <, N. J. STANISLAW , T. Stanley (\V) Box 354, Centerport. L. I-, N. Y. (Sylvania Electric Products, Inc.) STANLEY. George V. (E) 2752 W. 90th PL Evergreen Park 42, III. (Crane Co.) STANLEY. Robert J. (G) M. H. Detrick Co., 10600 Puritan Ave Detroit 33. Mich. STAXNARD, Wilford T. (D) J. A. Dedouch Co., 608 Harrison St. Oak Park, III. STANSFIELD. James R. D. (S) Streator Brick Co. Div. Hydraulic-Press Brick Co. Streator, I1L STANW AY. Miss B. Elm Works Ltd.. Summerstown, Tooting London S. W. 17, England STAN W ORTH, John Edwin 74 Ashlawn Rd.. Rugby Warwick, England (British Thomsou-Houston Co., Ltd.) ST A PL E TO N . R obert E. (W) 22 C hestnut St.. Franklinville, N. Y. (H i Q Div.. Aerovox Corp.) S T A l 'l'. John A.. Jr. (Gi Union Carbide 4 Carbon Corp. Silicones Div. E. Park Dr. & Woodward Ave. Tonawanda, N. Y. STAR PORCELAIN CO. (Daniel W. Luks) Mulrhead Ave., Trenton 9, N. J. STARK CERAMICS. INC. (J. H. Stewart) Box 230 Canton 1, Ohio STARK. R. E. (W) R. R. 5. Greenaburg, Pa. (Stupakotf Div.. Carborundum Co.) STARK. W. F. (E) Prom at Division. Poor 4 Co. 851 S. Market St., Waukegan, 111. STARKEY. Daryle D. (M) R. R. 1. Willard. Ohio (Starkey Engineering 4 Machinery Co.) STARKEY. Edward A. (M) 1068 Woodhill Rd., Mansfield, Ohio (Starkey Engineering & Machinery Co.) STARKEY, Elmer A. (R) 22397 Fairlawn Circle. Apt. 10 Fairview Park 26, Ohio (N orth American Refractories Co.) STATH IS. Andrew W. (RI) 5917 Cary, Cincinnati 24, 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 Trenton 5. N. J. STAVROLAKIS. J. A. (B) 915 Leonard Dr., Rock Hill 19. Mo. (Crucible Steel Co.) STEARNS. William E. (E) A. O. Smith Corp. 3533 N. 27th St.. Milwaukee. Wise. STECK. C. O. (G) F. J. Kress Box Co., One 2Sth St. Pittsburgh 22, Pa. ST EELE. A. Preston. Jr. (S) J. C. Steele & Sons. Inc. Box 951. Statesville. N. C. ST EE L E . C. N. (S) J. C. Steele & Sons. Inc. Box 951. Statesville. N. C.. ST EE L E . F. Montgomery (S) J. C. Steele & Sons. Inc. Box 951. Statesville. X. C. ST EELE. G. Allen (R) 101 MacGregor Dr., Trotwood. Ohio (Simonds Worden White Co.) STEELE, Harry L. Shorter & Son Ltd., Copeland St. Stoke-on-Trent. England STEELE. Howard E. (G) Westinghouse Electric Corp. Hoult Rd.. Fairmont. W. Va. STEELE. Hoyt P. (E) Benjamin Electric Mfg. Co. Des Plaines, 111. ST EE L E , J. C.. Jr. (SF) J. C. Steele & Sons. Inc. Statesville. N. C. STEELE, J. C,, 4 SONS. INC. (J. C. Steele, Jr.) Statesville, N. C. ST EE L E . Richard E. (M) Ram, Inc., 1064 W. Fifth Ave. Columbus 8, Ohio STEELE. William Perrin (S) Pine Hall Brick 8c Pipe Co. Winston-Salem, N. C. STEFL. Donald J. (R) Freeport Brick Co. Box 402, Freeport, Pa. S T E IL . Roy C. (G) 3450 Garfield St., Denver 5, Colo. (W oodbury Chemical Co.) STEIN , Colin H. 7 Melville Terrace, Stirling, Scotland (John G. Stein 4 Co., Ltd.) VOL, .15. No. 10 (1956) STEIN, Ronald C. Messrs. John G Stein 4 Co., Ltd. Bonnybrtdge. Scotland STEIN, Sidney J. (3 ) International Resistance Co. 401 N. Broad St.. Philadelphia 3, Pa. STEINBOCK. E. A. (R) Whip-Mix Corp., 41! W Avery St. Louisville 3, Ky. STEINER. Harry C. (0 , General Electric Co. Power Tube Dept. Schenectady N. Y. ST E IN H O F r. Fred L. (W_rl; Brick cr Cloy Record-- Ceramic Induiiry 5 S. Wabash, Chicago 3. 111. STEINROEDER. Fritz Didier-Werke A. G., Lessingstr. 16 Wiesbaden, Germany STELLE. John A. (S) Arketex Ceramic Corp., Brazil. Ind. STENQLTST, Donald R. (X J) Box 635, Redmond, Wash. (Boeing Airplane Co.i STEPHENS. Dan E. (R) North State Pyrophyllite Co. Pomona. X. C. STERLING CHINA CO. (William T. Pomeroy) East Liverpool. Ohio STERLING GRINDING W HEEL CO. (W. R. Morgan) Box 301, Tiffin. Ohio STERLING. Harry S. (G) Coming 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. W. 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 W orks; STETSON, William C. (W I) Box 44, Saxonburg, Pa. (Saxonburg Ceramics) STETTINIUS. K. E. (W ) Lapp Insulator Co., Inc., Le Roy, N. Y. STETTXER. 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. Hermosa 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 S t, La Crescenta. Calif (Gladding, McBean 4 Co.) STEVENS. Robert P. (R I) Chicago Fire Brick Co. 1625 W. 104th PI.. Chicago 43, 111. STEVENS. W. B. (W) . Socony Mobil Oil Co. ISO E. 42nd S t. New York 17. N. Y. STEVENSON, James K-, Jr. (RI) R. R. 2, Mundelein, 111. (Norton Co.) STEVENSON. Samuel (W ) 1967 Grafton Rd., Elyria, Ohio (Harshaw Chemical Co.) STEVENTON, Kenneth John Steventon 4 Sons Ltd. Cledford Works Middlewick, Cheshire, England R oster 103 STEW A RT, Aiex (E i National Lead Co., I l l Broadway New York 6, N. Y. STEW ART, Isaac (G) New York Testing Laboratories, Inc. 47 West S:.. New York 6. N. Y. TEW A RT. J. H. (S) j Stark Ceramics, Inc., Box 230 Canton 1, Ohio STEW ART, John A. (G i) 419 Locust Ave., Washington, l'a. (B . F. Drakenfeid it Co., Inc.) STEWARTTMalcoim (M) Commercial Minerals Co. J1 Irwin St., San Francisco 7, Calif. STEWART. Wilfred H. (R) U nited States Reduction Co. 4610 Melville, East Chicago, Ind. STIC K EL. William C. (R) Aluminum Co. of America 120 S. Broad St., Philadelphia, Pa. S T IE F . W. C. (W ) Mt. Clemens Pottery Co. 158 S. Wilson 31vd., Mt. Clemens, Mich. STILL, Henry P.. Jr. JI Stoneleigh 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-W aiker Refractories Co.) STOCXDALE. George F. (G) 49 Corning Blvd., Corning, N. Y. (Corning Glass Works) STOCKSLAGER. Theodore F. (W) Carborundum Co. 24800 Lakeland Blvd. Cleveland 32, Ohio STOD DA RD. Stephen D. (R I) 2974 B W alnut. Los Alamos, N. M. (Los Alamos Scientific Laboratory) STO EN , Roger C. (S I) _ Canneltcn Sewer Pipe Co. Canneltcn. Ind. STOH L, Alfred A. (W) 374 North St.. Sun Prairie, Wise. (Wisconsin Porcelain Co.) STO K L, L. A. (W ) Wisconsin porcelain Co. 120 Lincoln St., Sun Prairie, Wise. ST O IA . Pfc. John Z. (W JI) US 52373935. Btry 3663rd F.A. 3n. APO 331. San Francisco. Calif. ST C L L E R . A rthur I. (W J) Radio Corp. of America Princeton. N. J. STOLTE. Norman H. (E l) 3974 Orchard Rd. Cleveland Heights 21. Ohio (Harshaw Chemical Co.) STON E. Benjamin (W) California Crafts 43340 N. Gratiot. Mt. Clemens, Mich. STON E. Conrad A. (G) 93 S. Remington Rd. Bexley, Columbus 9, Ohio (Federal Glass Co.) STO N E, C. P. Ferramic Industries, Ltd. 25 Hydeway, Welwyn Garden City Herts, England STONE. F. R. (R) -Canada Firebrick Co., Ltd. 4741 St. Ambroise St. Montreal. Que., Canada STONE. Robert J. (M) John W. Higman Co. 2* State St.. New York 4, N. Y. STO N E, Robert L. (B F I) Dept, of Ceramic Engineering University of Texas, Austin 12, Texas ST O N E . S. A. (M) Deister Concentrator Co. 901 Glasgow Ave., Fort Wayne, Ind. STONG. Gay E. (G) 926 W. W ater St.. Elmira, N. Y. (Corning Glass Works) Vol. 35, Xo. 10 (1936) STOOKEY. Stanley D. (OF) 145 Pritchard .Ave.. Coming, N. Y. (Corning Glass Works) STOOPS. Robert F. (R i) Metallurgical Products Dept. General Electric Co.. 3ox 237 Roosevelt Park p. O. Detroit 32. Mich. STORER-FOLT, John ?. (RJI) 1 Beniamond Ave.. Apt. E. Toronto 13. Ont.. Canada (Refractories Engineering it Supplies, Ltd.) STOTT, A. E. Edward Johns & Co.. Ltd. Armitage Sanitary Pottery New Rugeiey, Stafford. England STOUT. John R. (W ) 306 E. Murray St.. Macomb, 111. (Illinois Electric Porcelain Co.) STOUT. Joseph V. (E) 104 S. Fourth Ave. Highland Park, N. J. (Metal it Therm it Corp.) STOUT. Lester L. (B) Ohio State University Research Foundation Columbus 10, Ohio STOVES, Edward R. (B) General Electric Co. Research Lab. 243 MB Box 1088, Schenectady 8, N. Y. ST. PIER RE. Philippe D. S. (B) General Electric Co., Research Lab. Metallurgy Sc Ceramics Div. Box 1088. Schenectady, N. Y. STRADLEY. J. Grant (I) 1950 Korbel Ave.. Lot 93 Columbus 11. Ohio STRADLEY. Norman (HI) Minnesota Mining it Mfg. Co. 2301 Hudson Rd., St. Paul 6, Minn. STRAIGHT, Lee H. (S) Iowa Clay Products Co. Centerville, Iowa STRAIN, R. E. (E) Alliance Ware, Ltd. Box 320, Vancouver. 3. C-, Canada STRATTON, Warren 3711 15th X. E.. Seattle 5. Wash. STRATTON. Mrs. W. B. <D) Pewabic Pottery. 10122 Jefferson Ave. Detroit 14, Mich. STREATOS BRICK CO.. DIV. HYDRAULIC-PRESS BRICK CO. (James R. D. Stansheid) Streator. III. STRIMPLE. J. H. (B) National Lead Co.. Titanium Div. Box 58, South Amboy, N. J. STRING FELLO W , Allen E. (R ) 544 Woodland Ave.. H addonheld, 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.. Inc., Ceramic Dept. Little Falls, N. J. STROUD, Harold L. (M) 2909 Betnbridge Rd., Royal Oak, Mich. (Champion Spark Plug Co.) STROUP. Philip T. (R) Aluminum Co. of America Box 772, New Kensington. Pa. STROUPE. Howard E-. Jr. (W I) Wheeling Tile Co.. Wheeling, W . Va. STRUCTURAL CLAY PRODUCTS INSTITUTE (Harry C. Plummer) 1520 18th St_ N. W. Washington 6. D. C. STRUCTURAL CLAY PRODUCTS RESEARCH FOUNDATION (Paul V. Johnson) Geneva. 111. STRUEBING. Harold J. (R) 1215 Military Rd.. Buffalo 17, N. Y. (Richard C. Remrney Son Co.) STUART, Deraid A. (B) Thurston Hall, Cornell University Dept, of Er.gr. Mat., Ithaca, N. Y. S 7U B 3IN S . William J. (W) Rio Atovac 26-14, Mexico 2, D. F. (Consultant) STUBBS. John M. (M) National Gypsum Co. 3013 Boudinot 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 Sc 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, Eieswarapu C. Pennsylvania State University Coilege of Mineral Industries Dept, of Ceramics University Park. Pa. SUBRAHMANYAM. Sanga V. (G) I-H Arlene Village, Millville. N. J. (T. C. Wheaton Glass Co.) SU 3 RA MANIA N D. R. 3 u rn c Cq. Ltd. Refractory Sc Ceramic Group 12 Mission Row. Calcutta I. India SUCH CLAY CO. (M. M. McHose. Jr.) Box 47, Perth Amboy. N. J. SULENS. Henry A. (M) _ _ Ceramic Supply Co.. Div. Ferro Corp. Box 151. Crooksviile. Ohio SULLIVAN. Eugene C. (GF) Corning Glass Works. Coming, N. Y. SULLIVAN, John D. (B FI) BatteUe Memorial Institute 505 King Ave., Columbus 1, Ohio SULLIVAN. Joseph C. (G) 38 Fulton St., Coming, N. Y. (Coming Glass Works) SULLIVAN. Paul A. (GI) 624 Adeline Dr., Webster, N. Y. (Bausch & Lomb Optical Co.) SUMMERS. E. W. (G) Owens-Illinois, Technical Center 1700 N. Westwood Ave. Toledo 7. Ohio SU M RELL. Ferrall N. (E) 707 Henry St.. Uniondale, L. I., N. Y (Hardwick. Hindle, Inc.) SUN, X. H. (GF) 2131 Lindsay Rd., Pittsburgh 35, Pa. (Westinghouse 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 S: Stamping Works, Ltd. 24 Middle Rd.. Entally Calcutta 14, India SURFACE COMBUSTION CORP. (Harvey C. Weller) 2375 Dorr St. Toledo 1, Ohio R oster 105 SURFLEET. Harold Kaylene Laboratories, Waterloo Rd. London, N. W. 2, England (Kaylene (Chemicals) Ltd.) SUTHERLAND, Clark (St Robinson Clay Product Co. 1 W. State St., Akron 9, Ohio S JERLAND. Frank R. (R I) . i l Rainbow Dr., Kokomo, Ind. ( 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) SVEC, J. ;. (W I) 3440 S. Euclid Ave.. Berwyn. III. (Industrial Publications Inc.) SW AIN, Richard S. . 509 Kibler Ave., Newark. Ohio SWALM. Pbaon H. (W) Box 173. Kingston. Cm.. Canada (Frontenac Floor & Wall Tile Co., Ltd.) SWANSON. Carl H. 770 Techwood Dr., N. W.. Atlanta, Ga. SW ANSON. Leroy M. 34 Hudson St.. W orcester, Mass. SW EA R IN G EN . Jack C. (G) United Can <5t Glass Co. Box 90. Hayward. Calif. SW EIT2ER. Mark (W) 747 N. Mentor. Pasadena, Calif. (S. Paul Ward, Inc. ) SW ENTZEL. John ? . (RI'1 8960 Hennepin Ave. Niagara Falls. N. Y. (Carborundum Co.) c ' t-"EO, Benjamin J. iE F Ij Ferro Corp. 4150 E. 56th St.. Cleveland 5, Ohio 5W1CA. 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-rord Glass Co. 1701 E. 3roadway, Toledo 5. Ohio SW IGART. Joseph J. (M) 3014 Middletown Rd.. Pittsburgh 4, Pa. (Vitro Rare Metals Co.) SW INDELL-DRESSLER CORP. (Philip Dressier) Box 1888 Pittsburgh 30. Pa. SW IN E H A R T . David C. 808 E. 42nd. Apt. D, Seattle 5, Wash. SW IN N ER TO N . Bertram B. (W ) 157 Hampden Park, Tiffin, Ohio (American Radiator & Standard Sanitary Mig. Corp.) SW IN N ERTO N , George R. (M) 35 E. State St.. Alliance, Ohio (Moore & Munger) SYLVANIA ELECTRIC PRODUCTS. I N C (B. S. Ellefson) 1740 Broadway. New York 19. N. Y. SY LV ESTER . George R. (M I) Sylvester & Co. 17706 Miles Ave.. Cleveland 23, Ohio SZCZEPA N SK I. Daniel A. Box 757. Alfred. N. Y. SZYMASZEX, Jaa Walter (R) 121 Muir Ave. Niagara Falls, Oat.. Canada (Metals Research Laboratories) T BATA, Seiiehi . S1,a1s-aCkhimGelasYs oMkofgka. wCao-.B. aLshtdi. Sttmida-ku, Tokyo. Japan TAILBY. Roland V. (W I) Stylon Corp., Milford. Mass. Vol. -. No. 10 ( 1956) TAJKOW SKl. Edward G. (G.i General Electric Co. Silicone Products Dept. Waterford. N. Y. TAKAHASHI. Kakuichiro (F) Nippon Glass Co., Ltd. 1, Ginza 7-chome, Cauo-Ku Tokyo. Japan TALLAN. Norman M. 95 E. 12th Ave., Columbus. Ohio TALWALKAR, T. W. 8 Bagmati Rd., Jamshedpur, India (Tata Iron it Steel Co.. Ltd.) TAN BERG. Ragnar Drammens Glassverk Drammen, Norway TAO, Yung (G) 501 S. Garheld St., Burlington, Iowa (Sylvania Electric Products, Inc.) TARNACKI. Walter J. (W I) 8417-C Loch Raven Blvd. Towson 4, Md. (Friez Instrument Div., Bendix Aviation Corp.) TARNOPOL, Milton S. (B) 943 Ninth Ave., Brackenridge, Pa. (Pittsburgh Plate Glass Co.) TASHIRO, Megumi Institute for Chemical Research Kyoto University Yoshidahon tnacni, 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. (U. S. Navy) TATNALL. R. Francis Box 827. Alfred. N. Y. TAUBER. Charles B. (B) 921 Signal Rd., Signal Mountain. Term. (American Lava Corp.) TAUBER. John A. (R I) 3190 Mayflower Rd. Plymouth Meeting, Pa. (E. J. Lavino it Co.) TAYLER. John 3. (W) Louisville Fottery Co.. Inc. 228 E. Bloom. Louisville 8. Ky. TAYLOR. Fran (D) Gay Fad Studios. Lancaster. Ohio TAYLOR. Hiram D. (B) Shreve M anufacturing Co.. Shreve. Ohio TAYLOR. Howard U. (W I) Globe-L'nion Inc.. Ceramic Lab. 900 E. Keefe 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 It Mfg. Co. Fluoroehemicals Div. 900 Fauquier Ave., St. Paul 6. Minn. TAYLOR. Robert B. (S) Structural Clay Products Research Foundation. Geneva. III. TAYLOR, SMITH * TAYLOR CO. (Phil W right) Chester. W. Va. TAYLOR. Thomas J. (R) 816 Sterner Mill Rd., Trevose. Pa. (R. C. Remmey Son Co.) TAYLOR. William C. (GF) Corning Glass Works. Coming, N. Y. TEAGUE. A. D. (R) Babcock 4 Wilcox Co.. Box 923 Augusta. Ga. TEAGUE BRICK 4 T IL E CO. (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 Wilrno: Rd.. Deerneld. 111. (Thomas C. Thompson Co. I TEETOR. Paul (SF) 72 E. Main St.. Somerville. N. J. (Central Commercial Co.) TEFFT, Glenn C. (S; . Claycraft Co.. Shawnee, Ohio TEFFT. Phillip W. (SF!) Claycraft Co., Box 856 Columbus 16. Ohio TEFFT. Willard H. tS) Claycraft Co.. Upper Sanduskv, Ohio TEGELLABORATORI ET (Brick Laboratory), (Christer Enberg) Drottaieg Kristinas vag 45 Stockholm 0 , Sweden TEICHMANN, Henry F. (G) Henry F. Teichmann. Inc. Box 1705. Pittsburgh 30. Pa. TEICHMANN. Henry F.. Jr. (G) 645 Elderwood Dr., R. R. 2 Bridgeville. ?a. (H enry F. Teichmann, Ir.c.) TEICHMANN. Newton N. (G) 316 Hardy Dr., Bridgeville, Pa. ( Henrv F. Teichmann. Inc.) TENNERY. 2/Lt. Victor J. (BJ) Signal Corps Eng. Labs. Chemical Physics Branch Ferroelectrics Unit Ft. Monmouth. N. J. TERMAN. Mark J. (R) Babcock & Wucox Co. 161 E. 42nd St.. New York 17. N. Y. TERRY, Griffin E. (E) 602 E. Willow, Wheaton, III. (Hotpoint Co.) TERRY. Jack H. (E) 4321 Fairfield Ave.. Fort Wayne. Ind. (General Electric Co.) TEXAS BRICX CO. (W. T. Gill. Jr.) Box 510. Brownwood. Texas TEX A S V IT R IFIE D P IP E CO. (Paul E. Hoey) Box 117 Mineral Weils. Texas THA TCH ER GLASS MFG. CO., INC. (Roy S. Armadale) 1901 Grand Centra! Ave., Elmira. N. Y. THEOBALD. Erwin F. (S) 1516-- 18th St.. N. W.. Canton 3. Ohio (Metropolitan Brick. Inc.) TH EW S. Karl 3. (M) 83-09 Talbot St. Kew Gardens, L. L, N. Y. (Titanium Alloy Mfg. Div.. National Lead Co.) TH IELK E. Norman R. (3 ) National Carbon Co., Research Labs. Box 6116, Cleveland l. Ohio THIEM ANN, John W. (W I) Alite Corp-. Box 119, Orrville. Ohio THIEMECKE, Harry W. (W FI) Homer Laughlin China Co. Newell. W. Va. T H IE S S . L. E. (W F) Insulator Dept.. General Electric Co. Baltimore 30, Md. ' ~ THOMAS. Charles A. G. E. J. 4 J. Pearson. Ltd.. Firebrick Works, Stourbridge, England THOMAS, Charles W. (Honorary) Clifton House, Old Swinford Stourbridge, England (E . J. 4 J. Pearson, LtdFirebrick Works) THOMAS. David W. (W I) Tycer Pottery. Inc. Armstrong St., Roseville, Ohio THOMAS. Everett A. (R) 2703 Sbaffier Ave.. Cincinnati 11, Ohio (Cbas. Taylor Sons Co.) THOMAS. George L. (G) 11 Ideal Ave.. R.R. 1, Cheswick, Pa. (Pittsburgh Plate Glass Co.) THOMAS. H. H. (M) 35 Highboy Court. Red Bank. N. J. (Pemco Corp.) R oster 107 THOMAS, Richaru V. Ellcndale Rd- Chagrin rails. Ohio THOMAS, Robert H. iB i 238 Arlington Rd., Newton Falls, (Falls Welding 4 M:g. Co.) ^HOMASO.V. James F. (!) I S62 Roosevelt Kd., Kohler, Wise. /OMPSON, A. Paol (R ?) Research Laboratories Eagle-Picher Co.. Jcplin, Mo. THOMPSON, Otaries W. (R) 216 Dell St., Johnstown, Pa. (Bethlehem Steei Co.) THOMPSON, Clyde L. (R FI) 4922 New Plymouth Rd. Pittsburgh 27, Pa. (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 & Chemicals, Ltd. , 229 High Holboro London, W. C. 1, England THOMPSON, John D. (E) 2434 Evergreen Dr., Royal Oak, Mich. (Briggs Mfg. Co.) THOMPSON. Matthew S. (G) Puerto Rico Glass Corp., Box 4272 San Juan. Puerto Rico THOMPSON. Noel M. (R) 721 Shady Lane, Pittsburgh 34, Pa. 1Lumnite Div. Universal Atlas Cernent Co.) THOMPSON. Thomas E. (E ) Box 2S2, Williams Bay, Wise. (Thomas C. Thompson Co.) THOMPSON. Lt. William M.. Jr. (BJI) W'ADC, Area 3 , 3ox 8303 Wright-Patterson A.FB. Dayton. Ohio HO.MSON. Homer G. (R) 12101 W. Howard St. Milwaukee 14, Wise. (Allen Bradley Co.) THOMSON. James X. (W) 2 McMaster PL, Bath, N. Y. ( Westinghouse Electric Corp.) THOR. Mumer E. (RI) 313 parkhurst 31vd- Buffalo 23, N. Y. Norton Ca.) THORNE. James E. (W J) Case Manufacturing Corp. Robinson, 111. THORNGATE, Bruce W. (W ) Royal Tile M anufacturing Co. Sylvania Sta., Box 7292 Fort Worth 1 1 .7 exas THORNTON, George A. (M) Ottawa Silica Co-, Box 437 Ottawa, 111. THORNTON. Paul E. (WI) 1708 La Taza Dr.. La Canada, Calif. (Ferro Corp.) THRASHER. William R. (D ) Model Ceramics, Inc. 772 N. Main. Akron 10, Ohio THROPP. Herreid D. (M) Shenandoah Silica Co., Inc. 190 W. State St.. 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.. Oeveland, Ohio THURNAUER. Hans (3FI) Minnesota Mining & Mfg. Co. Central Research. Inorganic Section Hudson Rd. Si East Ave. St. Paul 6. Minn. THUT, Walter W. A. G. Hunziker 4 Cie, Lagerstrasse 1 Zurich, Switzerland T1BBALS. Harvey L . (M i; 542 Santa Barbara Rd. Berkeley 7, Caiif. Ohio ( Minneapolis-Honeywell Regulator Co.) T1CE. Henry B.. Jr. (W ) Zenith Radio Corp. 1500 N. Kostner Ave. Chicago 51. 111. TICKLE. William H. F. "Brown Stacks," Caicy Nr. West Kirby. Cheshire, England (Manchester College of Technology) TID D, Elbert D. (W) Bell Telephone Labs, Inc., Rm. 3B-266 Whippany, N. J. T IED 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 ) Winbum Tile Mfg. Co. 1709 E. Ninth St., Little Rock, Ark. TILLOTSON, Clifford (R) Tillotson Refractories Co. Box 398. Corona, Calif. TILLOTSON, E. W ard (GF) 505 S. Murtland Ave., Pittsburgh 8, ?a. (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 Y'ork College of Ceramics at Alfred Univ. Alfred. N. Y. TITANIUM 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 Y'ork 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. Queenston. Ont.. Canada (Canadian Ohio Brass Co.) TO EPFER. George (W ) Canadian Potteries Ltd. 360 Slvd. Sminaire S t Johns. Que.. Canada TOLER. Herbert R. (E ) R, R. 2, Box 544, West Chicago, 111. (Indiana Steel Prod. Co.) TOLLY. Donald B. (E J) 122 Hudson Ln., Fern Creek. Ky. (General Electric Co.) TOM. Elgin M. (G) 4208 Mariaine Dr.. 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 Rd., New Castle, Pa. (Shenango China, Inc.) TOOL. Arthur Q. (GF) 7325 Carroll Ave. Takotna Park 12. Md. TOOLEY, F. V. (GF) 6U W. Oregon, Urbana, 111. (University of Illinois) TOOMEY. James E. (R) Kaiser Aluminum & Chemical Corp. 1625 Eye St., N. W., Room 915 Washington 6, D. C. V ol. 35. No. 10 (195G) TOPPING. June. (R . United States Steel Corp. 325 William rear. ?L Pittsburgh 39. Pa. TORGAL. K. G. 1/103, Manr.arpumtr. Tiruchirapaili, S. India (Jatr.ai Mcbam.ed College) TORNO. Ralph F. <E; 410 Front St.. 3erea, Ohio ( McGear. Chemical Co.) TOROK. Juiius J. (G) 3344 Gallatin Rd.. Toledo 6, Ohio (Owens-Illinois) TOSTEVIN. Edgar R., Jr. (W I) 2044 Westneid Terr., Bethlehem, Pa. (Western Electric Co.) TOULOUSE. Julia a K. (G FI) 1817 Potomac Dr., Toledo 7, Ohio (Owens-Illinoisl TOW NSEND, William O. (WO 2763 Nottingham Rd. Columbus 21. Ohio (Batteile Memorial Institute) TRABERT. Loren A. (W l) 610 Maple St.. Red Wing, Minn. (Red Wing Potteries, Inc.) TRAVIS, Betty A. (D) 124 W. 13th St.. New Y'ork 11. N. Y\ TREDENNICK. William T. (RI) 514 Brookfield Rd. Drexel Hill, Pa. (Refractory Specialties Co.) TREFFN ER, W alter S. (R) 440 W. Maple Rd. Linthicum Heights. Md. (General Refractories Co.) TREISCHEL. C. C. (W F I) R. T. Vanderbilt Co.. 230 Park Ave. New York 17, N. Y. TREITLER, Theodore L. (G) Corning Glass Works, Corning. N. Y. TRENTON PO TTERIES CO. Plants 1 4 2. 3C9 N. Clinton Ave. 3ox 141. Trentpn. N. J. TREPTOW . Arnold W. (E) 3ell Telephone Labs. Murray Hiil. N. J. TREVOR. John F. Moira Rd.. Woodville Nr. 3urton-on-Trent. England (John 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, S. 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 Butler Ave- Detroit 11, Mich. TROST, Frank W. (R) Chas. Taylor Sons Co. 5 Haddon Ave- Haddonneld, N. J. TROSTEL. L. J. (RFI) General Refractories Co- Box 1673 Baltimore 3, Md. TROSTEL. Louis J., Jr. (R I) Norton Co- 1 New Bond St. 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.) TRUESDALE. Richard S. (I) Box 275. Alfred. N. Y. TRUMPLER. Alfred L. (M) Harper Electric Furnace Corp. 39 River S t- Buffalo 2, N. Y. R oster 109 TSE. Saou-eheng (W I/ 133 Main St.. Apt. 3-3 Fairhaven. Mass, i Aerovox Corp.) TSUKADA, Kcnicbi Box 267. Alfred. N. Y. -U C X E R , Donald J. (M l) 3114 VVinthrop Sd. Huntingdon Valley. Pa. 1 I Precision Grinding Wheel Co.) TUCKER, Edward F. t.R) StebLins Engineering & Mfg. Co. 363 Eastern Blvd.. Watertown. N. Y. TUCKER. Harvey C. (W I) Ferro Corp., 4150 ,E. 56th St. Cleveland 5, Ohio TUCKER. Roland E. (W I) Trenton Potteries Co. 309 N. Clinton Ave., Trenton, N. J. TUNC. Chi Fang (E) 1958 Xokomis Ave., St. Paul 6. Minn, t Minnesota Mining & Mfg. Co.) TURSETT, Paul E. (M I) R. R. 1, Dresden Hwy., Paris. Tenn. (H . C. Spinks C ay Co., Inc.) TURCK. Raymond L. (M) , 48 Short St.. Tiffin. Ohio i Sterling Grinding Wheel Co.) T U R ISSIN I, Robert (G J) Coming Glass Works, Fallbrook Plant Coming, N. Y. TURK. Richard H. (E FI) Pemco Corp., 5601 Eastern Ave. Baltimore 24, Md. TURLEY . Charles L. (G) B. F. Drakenfeld & Co., Inc. Box S19. Washington. Pa. TURN BAUGH. Jerry E. 5310 33rd Ave. S.. Seattle 8, Wash. TURN'BULL, Edward D. (W) 500 Penn Ave., Scranton 3, Pa. (Euston Lead Co., Div. Glidden Co.) TURNBULL. John C. (G) Radio Corp. of America ECA-Victor Div., Lancaster, Pa. TURNER. A. A. (R) 153 I-ake Ave.. Metuchen. N. J. .'Carborundum Co.) TU RN ER. Donaid Messrs. Lodge Plugs, Ltd. Rugby, England TURN ER. Mort D. fB) Caile 12 de Octubre 414 Hato Rev. Puerto Rico TURNER. ?. ? . Jr. (RI) 46 Imbler Dr.. Cincinnati 18, Ohio General Electric Co.) TU RN ER. Robert C. (S I) One Jefferson Ave. Rockville Centre. N. Y. Structural Clay Products Institute) TU RN ER. W. E. S. (Honorary) 30 Whitworth Rd., Ranmoor Sheffield 10, England T U T T LE . George N. (E ) Benjamin Electric Mfg. Co. Seegera Rd. 3r N. W. Highway Des Plaines. 111. T U T T L 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 Div., Box 231 Fostoria, Ohio TW ELLS, Robert G. (G I) 528 Isabella Ave.. Lock 4, Pa. (Coming Glass Works) TWYFORDS. LTD. Cli/fe Vale Potteries Stoke-on-Trent. England TYGART VALLEY GLASS CO. (E . A. Hinldns) Box 503 Washington, Fa. T Y L E R . W. S., CO. (C. E. Jenks) 361S Superior Ave., N. E. Cleveland 14. Ohio VOL. 35, No. 10 (1956) TYRRELL. Miics E. (R) Box 412, Norris, Term. (U. S. Bureau of Mines I TYSINGER, Ted W. t.Sl R. R. 2. Thomasville. N. C. (Cunningham Brick Co./ U UELTZ. H. F. 0. (3 / 39 West St.. Worcester, Mass. (Norton Co.) UHRMA.NN. Carl J. (G r) Overlook C:., Beilaire, Ohio (Arthur W. Schmid Co., Inc.) ULEMAN. Turrell (G) 109 Virginia Ave., Aspinwall, Pa. (Pittsburgh Plate Glass Co.) ULRICH, Robert J. (E ) American Radiator 3t Standard Sanitary Corp. 1541 S. Seventh St.. Louisville 8. Xy. UNION FRANAISE DES PRODUITS REFRACTAIRES (Louise Halm) 15. Rue de Milan, Paris 9e. France U N ITED CLAY M INES 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 NIVERSAL CLAY PRODUCTS CO. fC. A. Btoor) Sandusky, Ohio U NIVERSAL DENTAL CO. (Joseph Konnl 48th it Brown Sts. Philadelphia 39. Pa. UNIVERSAL POTTERIES. INC. (H arrv E. Davis i Cambridge. Ohio UNIVERSAL-RUNDLE CORP. (A. L. Johnson) V,'. Keith McAfee Lab. Box 1268. Mahor.ingtown. Pa. UNIVERSAL-RUNDLE CORP. (H . P. Wangetin) 3305 W. Forest Home Ave. Milwaukee 15. Wise. UN UM, Robert F. (W I) 311 Wilmington .Ave.. New Castle, Pa. ( Universal-Rundle Corp.) URBAN. Stephen F. (3 ) 268 Hartford Ave.. Xenmore 23, N. Y. (Titanium Alloy Div., National Lead Co.) UTAH F IR E CLAY CO. (C. H. Myers) Box 127. Sait Lake City 10. Utah UTZ. Donald (R) Kearfott Co., Inc. 142 Getty Ave.. Clifton. N. J. V VAIL. Milford R. 4014 Spruce St.. Philadelphia 4. Pa. VALDES. Thomas H. iW ) 431 Adeline St. Trenton, N. J. (Trenton Potteries Co.) VALENTINE FIR E 3RICK CO. DIV. A. P. GREEN FIR E BRICK CO. fW. H. Peterson. Jr.) Woodbridge. N. J. VALENTINE. Peter Cooney fM) Del Monte Properties Co. 620 Market St.. San Francisco 4, Calif. VALYI, lisabe 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 Milky Way, Clemson, S. C. VAN CLEAVE. A. -A. (R) 8100 McGroarty St., Sunland, Calif. VAN COTT. Harrison C. (B) R.R. 1, Horseheads, N. Y. (Coming Glass Works) VAN DER BECK, Roland ( BI) Research & Development Carborundum Co.. Niagara Fails, N. Y. V ANDERBILT, R. T,, CO. (Ira E. Sproat! 230 Park Ave. New York 17, N. Y. VANDERMADE. Richard J. (R) 489 Willow Dr., Pittsburgh 16. Pa. (Carborundum Co.) VAN DRESER. Merton L. (G) Owens-Coming Fiberglas Corp. Box 326, Kansas City, Kans. VAN DYKE. Orien W. (B) Magnet Cove Barium Corp. Box 6504, Houston 5, Texas VAN GELDEREN. L. P. N. V. Ramie Union, Enschede, Holland VAN GORDON, Donald V. (M) Metal Sc Thermit Corp. Box 471. Rahway, N. J. VAN HORN. Harry T. (M) 741 Floral Park Rd. Franklin Square, N. Y. (Socony Mobil Oil Co.. Inc.) VAN HOUTEN. Louis A. Fabricacin Des Abrasivos S. A. Ave. Julio A. Roca 610 Buenos Aires, Argentina VANICX. James S. (M> International Nickel Co., Inc. 67 Wail St.. New York 5, N. Y. VANNI. Ralph J. 1713 W arren Ave.. Seattle 9, Wash. va n NIEUW ENBURG. C. J. Laboratorium voor Analytische Seheikunde (Microanalyse) de Vries van Heystplein 2 Delft. Netherlands VAN SCKOICK. Emily C. tX F ) State University of New York College of Ceramics, at Alfred Uaiv. Alfred. X. Y. VAN SCHOIK. Dickson M. (R I) 5950 S. Lake Shore Dr.. 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. (B I) Dept, of Chem. Metal. Engineering University of Michigan Ann Arbor. Mich. van W ASSENHOVE. Pierre N. V. "De Sphinx" Maastricht. Holland VAN WIGGEREN. Charles G. (W I) Simonds Abrasive Co. Tacony Sc Fraley Sts. Philadelphia 37, Pa. VAN ZEE. Arthur F. (G )- ' ^ 3430 Inverness Ave.. Toledo 7, Ohio (Owens-Illinois) VARSHNEI. Purshottam D. U. ?. Glass Works Ltd. Bahjoi, Dt. Moradabad. U. P. India VASILOS. Thomas (B) 424 W. Fourth St., Elmira. N. Y. (Coming Glass Works) . VAUGHAN. T. Carter (SI) 1522 Bedford Rd.. Charleston, W. Va. (West Virginia Brick Co.) VAUGHAN. W. Harry (XFI) Cherokee Brick & Tile Co., Box 58 Waterville Rd., Macon, Ga. VEALE. Jack H. (R) 406 Reedwood Dr., Joliet. 111. (IlHnois Clay Products Co.) VEIGA. Roberto A. Cermica Santa Helena Ltda. Rua 15 De Novembro 38 Paranagua, Parana, Brazil R oster 111 VENABLE. Charles R., Jr. (RI) 1660 S. Oak, Bartlesville, Okla. (Phillips Petroleum Co.) VENABLE. Joe G. (G) Chattanooga Glass Co. Chattanooga 10. Tenn. 'pR B A . Richard J. (M j ' Schweitzer Equipment Co. 3764 Ridge Rd.. Cleveland 9, Ohio V ESU VIUS CRU CIBLE CO. (Francis L. Arensberg) Box 3075 Swissvaie. Pittsburgh 13, Pa. VICKERS, A. Eric J. "Wynnstay", Millfield Rd. Whickham Newcastle-upon-Tyne, England (Thermal Syndicate Ltd.) V ICTOR INSULATORS DIV., I-T -E C IR CU IT BREA KER CO. (H . Failmezger; Maple Ave. Victor, N. Y. VIDA XO FF, Richard B. (GJ) 90J Seventh Ave., Ford City. Pa. (General Electric Co.) V ID PLA N S. A. (D aniel Ferres) Real No. 4415, Montevideo. Uruguay V ID R IE R A M ONTERREY . S. A. (Alfonso F. Rodriguez) Apartado 162, Monterrey N. L.. Mexico VIGER. Burnett C. (G) 130 E. Third St.. Coming, N. Y. (Coming Glass Works) V ILENSKY. Michel B. (R) ISIS 27th Ave., San Francisco 22, Calif. (Arapex Corp.) VIN'AL. Francis E. (B) Radio Corp. of America 64 "A " St.. Needham Heights 94, Mass. VINCENT CLAY PRODUCTS CO. (O. J. Whittemore) 15-19 State Bank Bldg. Fort Dodge, Iowa V INCENT, George L. (W I) R. R. 2. Box 79, Robinson, 111. iCase M anufacturing Corp.) 'IX T H E R , E. Heikel Porcelainfabriken Norden Valby Langgade 95 Copenhagen. Denmark V ISCONTI di MODRONE. Raimondo Soc. Ceramics Richard Ginori 1 via Bigii. Milan. Italv V ITCLO . Sylvester A. (R I) Gen. Del.. Long Valley, N. J. (Austenal. Inc.) V IT R E O U S ST EE L PRODUCTS CO. (E dgar H. Weil) Box 3991 Cleveland 20. Ohio V ITRO MANUFACTURING CO. (Joseph 3oyce) 60 Greenway Dr. Pittsburgh 4, Pa. VODICXA, Albert L. (E) Aetna Porcelain Enameling Co. 4701 Augusta Blvd., Chicago SI, HI. VOGEL. Ralph B. (M) National Lime & Stone Co., Carey, Ohio VON TURY. Francis J. (DF) Lehigh Ave.. Perth Amboy, N. J. (Vontury, Inc.) V OO RH IES. John H. (W ) 243 Arrow Hwy.. Claremont. Calif. (Pacific Tile St Porcelain Co.) VOSE. Wilfred Winstones' Rooting 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) 27SI4 Rexford Rd., Bay Village, Ohio (F en tj Corp.) VRETOS. Epaminondas Institute of Chemistry St Agriculture "N . Caneilopoulos" of the Hellenic Co. Piraeus. Drapetsona. Greece VUKOVICH. Milan, Jr. (MI) 9 Dix Rd.. Woburn, Mass. (Godfrey L. Cabot, Inc.) Vo l. 35, No. 10 (19.56) w WACHTMAN, John B.. Jr. (B) National Bureau of Standards, Div. 9.1 Conn. Ave. & Van Ness St., N. W. Washington 25, D. C. WAGGONER, Jack H. (GF) 240 Quer.tin Rd., N., Newark, Ohio (Fiber Glass Div., Pittsburgh Plate Glass Co.) WAGNER, 3 ruce F. (W) 186 X. Vernon Ave., Pasadena 3, Calif. (B. F. Wagner & 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 (Perma Flex Mold Co.) WAHL, Albert J. (W ) A. J. Wahl. Inc., 3 Central Ave. Brocton, N. Y. WAHLGREN, Wald A. B. Gustavsbergs Fabrikcr `Gustavsberg, Sweden WAINER. Eugene (W ) Horizons. Inc.. 2905 E. 79th St. Cleveland 4, Ohio WAITE. Virgil H. (E) 433 Beech St.. Berea. Ohio (McGcan 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. 23-C North Augusta. S. C. WALXER. Eugene E. (W) 220 W. Sheridan Ave., New Castle, Pa. (Universal-Rundle Corp.) WALXER. Henry E. (G) Harding Glass Co.. Sta. B, Box 38 Fort Smith. Ark. WALKER. Herbert M. (W ) Walker China Co., Solon Rd. Bedford, Ohio WALKER, John Morgan Crucible Co., Ltd. Battersea Church Rd. London, S. W. 11, 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-B E. State St., Olean. N. Y. (Precision Ceramics. Inc.) WALLACE, Paul F. (B) Aluminum Co. of America Alcoa Research Labs., Box 772 New Kensington, Pa. WALSH, Donald S. (G) Consolidated Feldspar Dept., International Minerals & 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 WALTON, Jesse D.. Jr. (E) 3 3 0 4 F a ir w a y R d ., N . E . Atlanta 19, Ga. (Engineering Experiment Station Georgia Institute of Technology) WALWORTH, Chester A. (G) Libbey-Oweas-Ford Glass Co. Box 4373, Charleston 4, (V. Va. WAMBOLD. Jack i3 ) Ker.nametal. Ir.c. Llovd Ave., Latrobe. ?a. WAMPLER, Roy W. (G) Libbey-Ower.s-rord Glass Co. Technical Bldg., 1701 E. Broadway Toledo 5, Ohio WANG. Chan-huan Tektronix. Inc. Box 331. Portland 7, Ore. WANG, Franklin r . Y. Glascote Products, Inc. 20900 St. Clair. Cleveland 17. Ohio WAXGELIN, H. P. (E> Universal-Rundle Corp. 3305 W. Forest Home Ave. Milwaukee 15, Wise. WARD. George V. (R) McLain Fire Brick Co.. Div. of H. K. Porter Co., (nc. Weilsviilc, Ohio WARD, George W. (G) Gustin-Bacon Mfg. Co. 210 W. Tenth St., Kansas City, Mo. WARD. John B. (X) Coming Glass Works, Coming, N. Y. WARD. John F. (W) 551 Chester PL, University Heights New Brunswick, N. J. (Rutgers University! WARD. K. E. (Ml United Clay Mines Corp. 10! Oakland St., Trenton 6. N. J. WARD, Mrs. S. Paul (M) 601 Mission St.. South Pasadena. Calif. (S. Paul Ward. Inc.) WARD. Thomas J. Box 3. Ogaensburg, N. Y. WARDE. John M. (R) Union Carbide Ore Co. Carbide 3c Carbon Bldg. 30 E. 42nd St.. New York 17, N. Y. WARE. Robert K. 1407-3 Brackenridge A.pt. Lake Austin Blvd.. Austin 3. Texas W ARFIELD. Robert 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) Pfaudler Co.. Research Laboratory 1000 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., Jenkintotvn. Pa. (Frank Samuel St Co.. Inc.) WASHABAUGH, Grover C . Jr. (M) New Castle Refractories Co. New Castle. Pa. WASHINGTON BRICK CO. Muirkirk. Md. WASHINGTON BRICK 4 LIM E CO. (W alter Senters) Box 2198 Spokane, Wash. WASHINGTON PORCELAIN CO. (E. R. Miller) Willow St. Washington, N. J. WASMAXN, Russel! K. (R) Gladding, McBean St Co. 1275 Harrison, San Francisco, Calif. R oster 113 W ATERS. Martin R. (\V1) 23 Red Rose Way, Levittown, Fa. (Wenczel Tile Co.) \VATKIN, Robert \V. (W ) 2507 St. Clair Ave. East Liverpool, Ohio (Edwin M. Knowles China Co.) JrKI.VS. E. Charles iW Jl) Chapel R.i.. K.R. 3. Zanesville, Ohio (Mosaic Tile Co.) . W ATKINS, George 3. (G) Libbey-Oens-Ford Glass Co. 1701 E. 3roadway, Toledo 5, Ohio W ATKINS. Ray J . (S) L\ S. Tarirf Commission, Ceramic Div. Eighth & E Sts.. N. W. Washington 25, D. C. W ATKINS. Ens. Robert V. (I) BOQ 674, Room 275 NAS Pensacola, Fla. W A TK IN S. William E. (M l) 6363 Alderwood Rd.. 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., Mabwah. N. J. W ATSON, James F. Tabor. Iowa WATT. Charles 1527 Piikoi St., Honolulu. Hawaii WATT. Loren (W ) W att Pottery Co. Crooksville. Ohio WATT PO TTERY CO. (Loren Watt) Crooksville, Ohio WATTS, Arthur P. (R) A C Spark Plug Div., General Motors Corp., Dept. J103 Flint. Mich. WATTS. A rthur S. (Honorary. W FI) Lord Hall. Ohio State University Columbus 10, Ohio iUFLE. Harold E. Gen. Del.. Alfred. N. Y. WAUGH, J. Stanley Mass. Inst, of Tech.. Bldg. 20 Rm. 20-C-001. Cambridge J?, Mass. WAXLER. 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. W EAVER, 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. 1351 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) WEBER, Don A. (S) Deister Concentrator Co. 901 Glasgow Ave., Fort Wayne, lad. tBER. Kenneth E. (M) 2514 Thayer St., Evanston, 111. (O. Hommel 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) Polycbemicais Div. West Virginia Pulp & Paper Co. Box 332. Charleston. S. C. WEDDELL. George G. (Ml 125 Beverly Rd.. Pittsburgh 16, Pa. (Westinghouse Atomic Power Div.) WEEDY. Robert C. (R) Harbison-Walker Refractories Co. Box 957, Windham, Ohio WEEKS. Ben W. (M) Allied Trading Corp. 807 Commercial Bldg., Raleigh. N. C. WEHTJE, Emst J. Box 269, Malmo 1, Sweden (AB Ifoverken & Skanska Cement) W EHTJE. Karl Fredrik A /B Rorstrands Porslinsfabriker Lidkoping, Sweden W EDEL, Robert A. (G) 497 Apple Orchard Lane Webster, N. Y. (Bausch.4 Lorab Optical Co.) WEIDENBAUM. Sherman S. (G) 59 W. Second 5t,, Corning, N. Y. (Coming Glass Works) WEIDLICH. Gilbert (M) 640 E. Jefferson, Kirkwood, Mo. (Western Machinery 4 Engine Co.) WEIDMAN, V. Wesley (R) 201 Duncan Ave., Wilmington 3, Del. (E. 1. du Pont de Nemours 4 Co., Inc.) WEIGEL. Robert C. (R) 820 Woodlawn, Mexico. Mo. (Mexico Refractories Co.) WEIL. Edgar H. (E) Vitreous Steel Products Co. Box 3991, Cleveland 20. Ohio WEIL. Kurt E. Rua Batatais 472, Sao Paulo. Brazil W EINSTEIN, Alex (G) Ednalite 'Optical Co.. Inc. 200 N. Water St.. Peekskill. N. Y. W EINTRITT, Donald J. (M) 3122 Pine St., Belltre. Texas (Baroid Div., National Lead Co.) W EISE. Robert L. (G) 446 E. Second St., Logan. Ohio (General Electric Co.) W EISENSEEL. Charles W. Jackson Tiie Mfg. Co. Box 2C06. Jackson. Miss. W EISS. E. Joseph (B I) Dept, of Ceramic Engineering University of Texas. Austin, Texas WEISS, W. Russell (R ) Wellsville. Mo. (Wellsville Fire Brick Co.) WEISZ, 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 ) Cooksville Co., Ltd. 1055 Yonge St,, Toronto, Ont., Canada WELCH, James S. American Ceramic Society 4055 N. High St., Columbus 14, Ohio WELCH, John C , Jr. (B) 110 Escalona Ct,, Santa Cruz, Calif. (A. P. DeSanno 4 Son) WELCH, Richard L. (R) Dominion Firebrick 4 Clay Products (1954) Ltd. Claybank, Sask., Canada WELLER. Harvey C. (G) Surface Combustion Corp. 2375 Dorr S t- Toledo 1, Ohio WELLING, Charles E. (R) Ford Motor Co., Scientific Lab. Engr. Stall. Box 2053, M B Station Dearborn. Mich. WELLS. A. A. r.V -i Homer Laughlin China Co. Neweil. W. Va. W ELLS. J. M. (W ) Homer Laughlin China Co. Neweil, W. Va. WELLS, Ralph C. (3) University of Michigan E. Engineering 3!dg., Rm. 420 1 Ann A rbor. Mich. W ELSHANS. 1_. T. 'R ) Diamond Alkali Co., Cement-Coke Div. 300 L'r.ior. Commerce Bldg. Cleveland 14, Ohio W ELTE. Ralph J. (S) Summit Pressed Brick 4 Tile Co. Box 553, Pueblo, Colo. W ELTERLEN. James D. (R J) 4630 Zane St.. Los Angeles J2. Calif. (Gladding, McBean 4 Co.) WENCZEL. C. (W ) Wenczel Tile Co.. Box 908 Trenton. N. J. W ENCZEL T IL E CO. (C. Wenczel) Box 903. Trenton, N. J. W ENDT. Nelson E. (M) American Potash 4 Chemical Corp. 595 Foch Blvd.. Williston Park, N. Y. WENGER. 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 ENTZ. B. B. (S) Beiden Brick Co. 700 W. Tuscarawas St.. Canton 1, Ohio WERKEMA. Thomas E. (S) Dow Chemical Co.. Midland, Mich. W ERNER. Alan J. (G) _ 159 W atauga Ave., Corning, N. Y. (Corning Glass Works) WEST, Frank Haslemerc Green!anc Buxton, Derby. England (Derbyshire Silica Fire 3rick Co.) W EST. Howard F. (R) Illinois Clay Products Co. 68 N. Chicago Joliet. 111. W EST. Richard R. (3) Box 493. Alfred. N. Y. (State University oi New York. College of Ceramics) WESTBROOK. J H. (B) General Electric Co., Rm. 3124 Research Laboratory, The Knoils Schenectady, N. Y. W ESTERN BRICK CO. (I. R. Cline) Danville, III. WESTERN ELECTRIC CO- INC. (J. W. Scott) 7650 Hawthorne Station Chicago 23, 111. WESTERN ELECTRIC CO- INC. (W. J. Scott) 2525 Shadeland Ave. Indianapolis 6. Ind. W ESTERN FELD SPA R -MH.LTNG CO. (V. E. Magnuson) Box 671 Salida. Colo. WESTINGHOUSE ELECTRIC CORP. (John D. Hamish, Jr.) Derry. Pa. W ESTLAKE. C. Rogers (W I) 1961 Christmas Run Blvd. Wooster, Ohio (Shreve Manufacturing Co.) W ESTMAN, A. E. R. (GF) Dept, of Chemistry Ontario Research Foundation 43 Queen's Park Crescent Toronto 5. O nt- Canada W ESTM ONT. O. B. (R) Johns-Manville Products Corp. Lompoc. Calif. W ESTON. Ralph H. (S I) Arketex Ceramic Corp- Brazil, Ind. WEST VIRGINIA BRICK CO. (Claude F. Wiseman) Box 1071 Charleston. W. Va. R o ster 115 W EYL, Woldemar A. (GF) Div. oi Mineral Technology Pennsylvania State University University Park. Pa. W HALEN. Thomas J. Hilltop Park. Box 5. Slate College, Pa. HALLON. William P., Jr. (M l Globar Div., Carborundum Co. 3703 W. Beverlv Dr., Dallas, Texas '.'.'H EELER, D. D. (W ) Titanium Alloy Mfg. Div. NationaJ. Lead Co. Ill Broadway, New York 6, N. Y. W H EE L E R . William H. (RI) M artin A ircraft Co., Engr. Lab. M artin Mail 366. Baltimore 3, Mil. W H EELIN G STEEL CORP. (Ernest 3. Snyder) Steubenville South Plant Steubenville, Ohio W HELAN. Paul T. (R) 11 Florence Terr., Watertown 72. Mass. I Watertown Aresenal) W H ER R Y . Allen P. (E l) 9652 Oakdale Rd., Parma 29, Ohio ( Hunter-Thomas Assoc.) W H ITA C R E, D. D. (R) W hitacre-Greer Fireproofing Co. Wayr.esburg, Ohio W HITACRE-GREER FIR E PR O O FIN G CO. (D . D. Whitacre) Waynesburg, Ohio W H ITA C R E, Maxwell L. (M) Carborundum Co., Buffalo Ave. N iagara Falls, N. Y. W HITAKER. Fred A. (W I) 45 1 Oak Ridge Rd., Clark. N. J. (General Ceramics Corp.) W H ITA K ER. H. Rustless Iron Co. Ltd.. Lawkholine Ln. Keighley. Yorks. England W H IT A K ER . L. R. (S F I) Carolina Ceramics, Inc., R. R. 3 Columbia, S. C. W H IT E . Frank L. (G) 12147 Manor, Detroit 4, Mich, i Ford Motor Co.) W H IT E . George D. (3 ) 225 E. Drive. Oakridge, Tenn. (Carbide Sc Carbon Chemical Co.) W H ITE. Harold E. (R FI) R. R. 6. "Windy Knoll." Butler. Pa. Lava Crucible-Refractories Co.) W H IT E . J. F. (B) 2016 Arrowood Dr., Cincinnati 31. Ohio ( General Electric Co.) W H IT E, Jonathan S. (W ) 1302 Singer PI. Wilkinsourg, Pittsburgh 21, Pa. ( Stupakotf 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 ITEH EA D . Merlin H. (E) Columbian Enameling Sc Stamping Co. Terre Haute, Ind. W H IT E S ELL, Lysle E. (R) Wellsville. Mo. (Wellsviile Fire Brick Co.) W H IT FIE LD , Robert E. (R) Chas. Taylor Sons Co., Box 58 Annex Station. Cincinnati 14, Ohio W H ITFORD, Robert F. (R) North American Refractories Co. Ashland. Ky. W H IT FO R D . William G. (DF) Box 38. Olympia Fields. 111. (University of Chicago) W H IT N E Y . Earl J. 39 W. Fifth St.. Corning. N. Y. VHITN EY . Eugene H. (R) Gladding, Me Bean 3c 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.) V ol. 35, No. 10 (1956) WHITSON. Ralph E. (W) Aluminum Co. of America Box 300, Bauxite, Ark. WHITSON. Richard E.. Jr. <G> Dominion Minerals, Pincv River, Va. WHITTAKER. Clyde M. (W) Box 960, New Castle. Pa. (Universal-Rundle Corp.) WHITTAKER. G. Ward (W) Union Meeting Rd., Gen. Del. Bluebell, Montgomery County, 1'a. (Universal-Rundle Corp.) WHITTEMORE. J. W. (SFI) Virginia Polytechnic Institute Blacksburg, Virginia WHITTEMORE, O. J. (S) Vincent Clay Products Co. 615-19 State 3ank Bldg. Fort Dodge. Iowa WHITTEMORE, O. J.. Jr. (R I) Norton Co., Worcester 6. Mass. WHITTEMORE. Russell G. (G) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22. Pa. WHITTLE. F. F. (W) 1158 W. Water St., Elmira, N. 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. 1 Fern Creek, Ky. (General Electric Co.) WIEGAND. Frank R. (BJ) Box 732, Ft. Huachuca, Aria. (U. S. Army) WIKER. Richard M. (G) 206 Rand Ave., Painted Post, N. 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 Clay Product Co. Alliance, Ohio WILCOX, Paul D. 59 S. Grant St.. Midvale. Utah WILDER. David R. 1212 S. Third St.. Ames. Iowa WILKE. William P.. Ill (M) Hammond Lead Products, Inc. 5231 Hohman Ave., Box 912 Hammond. Ind. WILKERSON, Robert L. (W ) Crescent Concrete Products Corp. 2933 Dauphine St.. New Orleans. 1j . WILKES. Gordon B. (RF) Box 131, East Orleans, Mass. WILKINS. E. D. Kaiser Bauxite Co. Spur Tree, Jamaica. B. W. I. WILKINS. Ian Hugh (W) 325 Old Quarry Rd. Kingston, Ont.. Canada (Frontenac Floor it Wall Tile. Ltd.) WILLARD. Henry G. (MJ) General Electric Co. Plainville. Conn. WILLEMS. H. W. V. (G) 1513 Pacific Ave.. Brackenridge, Pa. (Pittsburgh Plate Glass Co.) WILLIAMMEE. G. Darby (R) R. R. 6, York. Pa. (J. E. Baker Co.) WILLIAMS. Alan B. (RI) 105 McCarthy Dr.. Augusta. Ga. (Babcock & Wilcox Co.) WILLIAMS. Arthur E. (G) 1214 Eighth St., Moundsville. W. Va. (Fostoria Glass Co.) WILLIAMS. Charles (E) 131 North St.. Auburn. N. Y. (U. S. Army) W ILLIAM S. Clyde (RF) 3attel!e 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 ILLIAM S. Gordon R. (W) Box 136, Florence, Ala. (Stylon Southern Corp.) W ILLIAM S, Harry M. (W I) Insulator Dep:.. General Electric Co. Charles 4 Crumweil Sts.. Baltimore, Md. W ILLIAM S, John A. (W) Box 250, Trenton 2, N. J. (Mitchell-Bisseil Co.) W ILLIAM S, John C. (W ) Mt. Vernon Way, Whippany, N. J. (Beil Telephone Labs.) W ILLIAM S. Leroy L.. Jr. (E l) 3006 Adams Ave., Evansville. Ind. (Whiripool-Seeger Corp.) W ILLIAM S. Lloyd D. (G) Coming Glass Works, Fallbrook Plant Coming. N. Y. W ILLIAM S. Roben A.. Jr. (W ) American Encaustic Tiling Co., Inc. 1000 N. Cannon Ave., Lansdale, Pa. W ILLIAM S. Robert B. (W ) 1107 Westwood Ave. Chattanooga. Tenn. (American Lava Corp.) W ILLIAM S. Roben E. 1800 Crosbv Rd., Carrollton, Texas W ILLIAMS. Roben M. (RI) 5809 Royal Oak Ave., Baltimore, Md. (General Refractories Co.) WILLIAMS. Walter E. (MI) New Castle Refractories Co. New Castle, Pa. W ILLIS, James 3. (E) 1355 Crofton Rd.. Baltimore 12, Md. (Pemco Corp ) W ILLM ORE. 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 ILLSON PRODUCTS. INC. (Thomas A. Willson) Box 622 Reading, ?a. W ILLSON , Thomas A. (G) Willson Products. Inc.. Box 622 Reading. Pa. W ILSON, Bonum S., Jr. Box 1105. Gemson. S. C. W ILSON. Calvin S. (G) Libbey Glass Div., Owens-IIIinios Ash St. Sc Wheeling R.R. Toledo 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) Gemson College, Olin Hall Gemson. S. C. W ILSON, Maurice S. (R) Reynolds Dr., R. R. 2, Box 261 Wallingford. Conn. (American Refractories Sc Crucible Corp.) W ILSO N. Robert Charles (W I) 791 Wedgewood Dr., Apt. 3 Columbus 4, Ohio (Ohio State University Engineering Experiment Station) W ILSON. Roben F. (G) Durakool, Ine. 1010 N. Main St., Elkhart, Ind. W ILSO N. R. T. (S) Ferris 3rick Co., Box 188 Ferris, Texas R oster 117 W INBURN, H. L. (S) Box 1369, Little Rock. Ark. (W inbum Tile Mfg. Co.) W INEM ILLER. William F. (R) 11 Ardmore Road, Worcester 9, Mass. Morton Co.) \ iLER, Seno .eram ica Winkler Rua I de Marco 119, 2 andar Rio de Janeiro, 3razil A IN SH IP. Lee C. (G) Syivanta Electric Products, Inc. Emporium, Pa. W INTER, Aniuta Institut d'optique Thorique et Applique, 3, Bld Pasteur Paris (15*) France W IR TH . David G.. Jr. 618 E. Daniel St.. Champaign. 111. W ISCONSIN PO RCELA IN CO. IL. A. Stohl) 120 Lincoln St. Sun Prairie. Wise. W ISE . L. G. (B) E. I. du Pont de Nemours it Co.. Inc. Chemical Dept., Experimental Sta. Wilmington, Del. W ISEM AN. Claude F. (S) West Virginia Brick Co. Box 1071, Charleston, W. Va. W ISH O SK I. I. Stanley (R ) Induetriai Heating 1400 Union T rust BIdg. Pittsburgh 19, Pa. WISS. J. E. (MFI) 1339 Lincoln Rd., Columbus 13, Ohio (Consultant) WITMER. Frank (G) 612 W. Main St., Woodville. Ohio (Ohio Lime Co.) W ITSCHEY. Ray A. (R) A. P. Green Fire Brick Co. Mexico. Mo. V " " THR. Raymond 3. {dificio Galipan. A-3-C. Av. Miranda al Rosai. Caracas. Venezuela ( Fabrica de productos Ceramico*) W ITUCKI. Robert M. (G) 4 W. Fifth St.. Coming. N. Y. (Corning Glass Works) W ITZEM ANN, A. W. CW) 220 Allegheny Ave.. Kittattuing. ?a. (E ljer Co.) WOLCOTT. J. David 35 Washington St.. Hcirncll. X. Y. WOLD, T. W) Smith S Stone. Ltd. Georgetown, Ont., Canada W O LFE N SPERGER. R. E. (R) Carborundum Co. 2600 Neville Rd.. Pittsburgh 25, Pa. W OLKODOFF, Vladimir E. (B) Carborundum Co. Buffalo Ave.. Niagara Falls, N. Y. W OM ELDORPH. R. C. (G) 13 T aft Ave., Providence. R. I. WONGSOREDJO, Rasmadji Balai Penjelidikan Keramik (Ceramic Institute) Djl. Raya Tim ur 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 ) Carrington Woods, R. R. 4, Box 209 Milledgeville, Ga. (Oconee Clay Products Co.) WOD, Russell K. (W I) 3900 E. California St. Pasadena 10. Calif. (Wallace China Co.. Ltd.) Vol. 153. No. 10 ( 193G) WOODBRIDGE. Thomas C. 38 Stirling Rd. Hayes. Middlesex. England (British Bath Co. Ltd.) WOODRUFF, Caivert M. (W i American Ncpheline Ltd. Nephton via Lakeneld. Ont.. Canada WOODRUFF, Ernest W. (R) Refractory Products Co. 910 Custer Ave., Evanston. 111. WOODS, C. J. (Xl North American Philips Co., Inc. Research & Control Instruments Div. 750 S. Fulton Ave., Mt. 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 Fiberglas Corp. Glass Research, Newark, Ohio WOOLEY, Seward E. (RI) 18 E. Brown St.. Somerville. N. J. (Johns-Manviile Research Center) WOOTEN. John H. (S) Elgin-Butier Brick Co., Elgin. Texas WOOTEN. Richard M. (G) 207 Mayfair Rd.. Nashville. Tenn. (Ford Motor Co.) WORCESTER ROYAL PORCELAIN CO,, LTD. (Joseph F. Gimson) Royal Porcelain Works Worcester. England WORCESTER, W. G. (XFI) 720 Sask. Crescent E. Saskatoon. Sask.. Canada WORK. Lincoln T. (B) 36 W. 44th St.. Rin. 80" New York 36. X'. Y. (Consulting Engineer) WRIGHT. D. K. (E) American Smelting it Refining Co. 120 Broadway, New York 5. X. Y. WRIGHT. Edward P. (WI) Box 387, East Liverpool, Ohio (Taylor. Smith 4 Taylor Co.) WRIGHT. J. E. Messrs. A. G. Hackney Sr 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-Illinois) WRIGHT, Roy E. (X) Philadelphia Quartz Co. of Calif. Sixth & Grayson St. Berkeley 10, Calif. VVUELLNER, Joseph F. (E) 1602 Gallon Ave., Cleveland 9, Ohio (Ferro Corp.) WURTSBAUGH. C. G. (W) Glostex Chemicals, Inc. 3056 Bandini Blvd. Los Angeles 23, Calif. WYATT. Bradley W . (S) Pacific Clay Products 9S00 S. Norwalk Blvd. Los Nietos, Calif. WYCXOFF. W. R. (R) Joseph Dixon Crucible Co. 167 Wayne St.. Jersey Citv 3. N. J. WYCANT. James r . (R l) Standard Oil Co. (Indiana) Engineering Research Dept. 2400 New York Ave., Whiting, Ind. WYNDHAM-QU1N, Francis H,, Jr. (S i Box 305. Avonmore, Pa. (General Refractories Co.) WYSONG. Charles F. (3 ) 425 Clay S:., Marietta. Ga. (Georgia Institute of Technology) WYSOR. D. C. (R) General 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. Hldeo (G) 305 W. 89th St.. New York 24. N. Y. (Asahi Glass Co., Ltd.) YAMASAKI. Kazuo Chemical Institute, Science Faculty Nagoya University Chikusa. Nagoya, Japan YAMAUCH I. 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 ) Productos Cermicos, S. A. Apartado 486, Monterrey, N. L., Mexico YARTE. Eugene A. (W ) Industrias Procesa. Apartado 486 Monterrey, N. L. Mexico YAVORSKY, Paul J. (B) McDanel 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. YOSHIKI. 3umpei 304 Tsurumi-cho. Tsurumi-ku Yokohama. Japan (Asahi Glass Co.) YOUMANS. Robert M. Box 4264, Georgia Tech., Atlanta. Ga. YOUNG. David A. (S) Cloud Ceramics. Concordia, Kansas YOUNG, George F. (G) Detnuth Glass Works. Inc.. Box 629 Parkersburg, W. Va. YOUNG. Howard S. (B) R. R. 1. Chadds Ford. Pa. (E . I du Pom de Nemours it Co.. Inc.) YOUNG. James John G. Stein St Co. Ltd. Manuel Works. Linlithgow. Scotland YOUNG. James E. (S) Structural Clay Products , Research Foundation. Geneva. 111. YOUNG. John C. (G) Portuguese 3end Club Portuguese Bend. Calif. (Hayward Scientific Glass Corp.) YOUNG. Lloyd G. (G) Coming Glass Works, Coming. N. Y. YOUNG. Robert W. (G) American Optical Co. Glass Research Lab. Soothbridge. Mass. YOUNG. Stanley H. (RI) Cleveland Quarries Co., Amherst. Ohio YOUNG. Taek Shik _ 32-89 Chongpa Dong Yong San Koo Seoul, Korea YOUNG. Vincent M. (G) Bausch St Lomb Optical Co. 635 St. Paul St.. Rochester 2, N. Y. YOUNG. Willard G, (W I) Case Manufacturing Corp. 1000 W. Pine St., Robinson, 111. R oster 11) YOUNG. \V. O. I.WI) 6 Livingston St., Honcoye Falls, N. Y. (Victor Insulators Div,, I-T-E Circuit Breaker Co.) YOUNGBLOOD. Charles J., Jr. (G) Mississippi Glass Co. 88 Angelica St., St. Louis 7, Mo. pU N T , Richard V. (Gj C. Tennant Sons 4 Co. 100 Park Ave., New York 17, X. Y. YUTZEY, Marvin 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) 515 S. E. 21st St. Mineral Wells, Texas (Texeramics Inc.) ZAPFE, Richard C. (W ) 162 Pentield 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.) ZEHRLAUT, Herbert A. R. (R) Calcium Atuminate Cement Corp. 232 E. 86th St., New York 23. N. Y. ZEILLER. Irwin F. (M) 150 Mason Dr. Manhasset, Long Island, X. Y. (B. F. Drakenfeld 4 Co., Inc.) ZELLER CORP. (R. E. Costello) Fort Wayne Rd., Denance, Ohio ZERFOSS. Samuel (BF) Mineral Products Div. National Bureau of Standards Washington 25, D. C. ZICKEFOOSE, Ellis J. (R) Gridin Wheel Co. 445 N. Sacramento Blvd. Chicago 12, 111. ZIEGFELD, Robert L. (M) Lead Industries Assn. 60 E. 42nd St., New York 17, N. Y. ZIEGLE, Glenn D. 4095$ W. University. Champaign, 111. ZIMAR, Frank (G) Corning Glass Works Main Lab., Corning, X. Y. * ZIMMER. David C. (W FI) 513 Harding Rd., Zanesviile, Ohio (Nelson McCoy Pottery Co.) ZIMMERMAN, Philip D. 611 W. Fayette Ave., Effingham, III. ZIMMERMAN, William F. (B) 3836 McNicholas St. Cincinnati 36, Ohio (Generai 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 P. (G) I-T-E Circuit Breaker Co. 601 E. Erie Ave.. Philadelphia 34, Pa. ZLOTNICX, Herbert (BJ) 7902 3ay pkv., Brooklyn. N. Y. ZNEIMER. Joel E. (B I) 108 Dull St., Watertown, Mass. (Raytheon Mfg. Co.) ZORZI, Eugene R. (M) C. Tennant, Sons 4t 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 JUS Cleveland. Ohio ZVANUT. Frank J. (MI) 14533 Bayes Ave., Lakewood, Ohio (Godfrey L. Cabot, Inc.) ZWERMANN. Carl K. (BF) 806 W . Main St., Robinson, III. ZWETSCK, Artur Villeroy & Boch M ettlach/Saar. Germany Addenda AMERICAN CYANAMID CO. (H . C. Milton) 30 Rockefeller Plaza. New York, X. Y. BAAK. Tryggve (G) 1J21 Old BoaJsburg Rd. State College. Pa. (Pennsylvania State University) BART. Ronald K. SOJ W. Washington, Champaign. Ut. BOWMAN. George A. 402 E. Armory, Champaign, III. DAVILA, A. E. Femamlea Londres 1122 Longchamps-FNGR. Argentina (Ferro Enamel S. A.) GILBERT. Frank C. Box 827, Allred, N. Y. D, William O. (R) ,ox 172, Ranson. W . Va. ' (Standard Lime 4c Cement Co.) KARNER. Ernest F. 806 S. Fifth St., Champaign, III. 120 R o s t e r McGREGOR. Jimmie R. Prather Hall. Rm. 344-3 Auxtin 18, Texas MEIN D U Joseph J. 601 W. University. Urbana. III. MEXTZER. Merle J. 406 E. Springfield Ave. Champaign, III. MURPHY. Leone P. 1005 S. Lincoln Ave.. Urbana, HI. NIELSEN, Thomas H. 406 W. Oregon, Urbana, 111. PLATT, James (S) Structural Clay Products Institute 2556 Clearview Ave. N.W. Canton, Ohio POTTER. Charles (G) Amersil Co., 685 Ramsey Ave. Hillside, N. J. POWELL. H. Eugene (G) 1061 Michigan Ave., Maumee. Ohio (Kimble Glass Co.) ROACH. Wilfred H. (G) ' 112 Renwick Ln.. Horseheads. N. Y. (Westinghouse Electric Corp.) SCHAEFER. Earl F. (G) 3129 Radford Dr., Toledo 14, Ohio (Owens-Illinois) SEELEY, Clarence E. (G) Glass Products Co. 6911 S. South Chicago Ave. Chicago 37, III. TAYLOR, Alan W. (B) Pennsylvania State University Dept, of Ceramic Technology University Park. Pa. W EST-ORAM. Francis G. 11 Walnnt Ln., Hartford Northwich, Cheshire. England (Imperial Chemical Industries Ltd.) W tN G ER TER . Donald B. (R ) 254 Oxford Ave.. Fair Haven, X. J. (Johns-Manvillei WRIGHT. Phil (W ) Taylor, Smith 4 Taylor Co. Chester. W. Va. C eram ic B u l l e t in 1