Document KRjmjE694Er61gn05kzyrb3X0

The American Ceramic Society I 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. [-- Membership in The 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 that is published on ceramic technology. The literature of ever;.- 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 enioy good fel lowship. Meetings. .Ceramists of the woricl gather for the Annual and Fall Meetings of The American Ceramic Society and its Divisions... for the presentation and discussion of papers on ceramic science, for the exchange of ideas, and for visit ing with other ceramists. Highest awards of the ceramic world are pre sented at these meetings, in recognition of achievement and service in the ce ramic field. Enjoy the prestige of membership in your industry's scientific society, plus the obvious advantages of keeping up to date on ceramic developments. The American Ceramic Society 4055 N. High Sc. COLUMBUS 14, OHIO Vol. 33, No. 11 (195G1 29 Membership Roster The American Ceramic Society This Roster of members is published only for the use of members of The American Ceramic Society. Listings are in alphabetical order. A separate Roster for the National Institute of Ceramic Engineers, showing grades of membership, is on pages R-122 to R-225 of this issue. New members received too late to be included are listed in the Addenda on page R-220. These listings give the member's preferred mailing address. Where this is not his business address his company connection is shown in parentheses. Divisions and other Society affiliations are indicated in parentheses following each name, in accordance with the code given below. The absence of any such designation indicates that the member is from outside the United States or a student member, neither of which has Division affiliation. B--Basic Science Division D--Design Division E--Enamel Division G--Glass Division M--Materials and Equipment Division R--Refractories Division S--Structural Clay Products Division '--White Wares Division X--No Division affiliation F--Fellow of The American Ceramic Society J--Junior Member I- National Institute of Ceramic Engineers A AH3EY, R. G. (G) General Refractories Co. 1520 Locust St., Philadelphia 2, Pa. ABBOTT, Gordon H. Reck Enamel (Pry.) Ltd.. Box 77 Industrie. TVL Union of South Africa ABE, Tosio 1001. Kami-ikegami-cho, Ota-ku Tokyo, Japan (Tokyo Shibaura Electric Co.. Ltd.) A3ERNETKY. Lonnie L. (El) Argonne National Lab. D22-2 Metallurgy Box 299. Lemor.t. III. ABINGDON POTTERIES. INC. (J. M. Lewis) SOI N. Mam St. Abingdon. 111. ABRAMS. Marvin E. i.W) Sentry Sanitary Corp., Box 42" Manningtor.. W. Va. ABRAMSON. Isaac A*. Ccpacahana, 959-Apto. 902 Rio de Janeiro. 3raa:'. (Kiabir. Irmaos St Cia.j ABRILLE. A. Viila San Miguei Brewery, ir.c.. 1112 Aviles Maniia. Philippines ACCOUNTIUS. Oliver E. (R) 113 E. Carter St.. Sierra, Madre. Calif. (Aerojet-General Corp.) ACHAUER. L. A.JS) Narco Co.-p.. East Canton. Ohio ACHUFF, Charies E. (W) 329 S. Bailas Rd.. Kirkwood 22. Mo. (Certain-Teed Products Corp.) ACME BRICK CO. (George: Puls) Box 425. Fort Worth. Texas A C SPARK PLUG DIV,, GENERAL MOTORS CORP. (Karl Schwartrwalder) Flint 2. Mich. ADAMS CLAY PRODUCTS CO. (James A. Cunningham) Box 226 Martinsville. Ind. ADAMS. David E.. Jr. (W) 330 Spring St.. Latrobe. Pa. (Carborundum Co.) ADAMS. Earl E. (W) National Plumbing Pottery, Inc. Zanesville. Ohio ADAMS. Edward M. (S) Murray Tile Co.. Inc. Cloverport. Ky. ADAMS. Milton (G) 129 W. Stretcher St., Toledo 8. Ohio (Libbey-Owens-Ford Glass Co.) ADAMS. P. Bruce (G) Coming Glass Works Research and Development Corning. N. Y. V*OL. 3.i, No. 10 (1956) ADAMS. S. L. (G) Joseph E. Seagram It Sons, Ir.c. Seventh St. Rd.. Louisville 1. Ky. ADAMSTON FLAT GLASS DIV.. ROLLAND GLASS CO. Box 631, Clarksburg. W. Va. ADCOCK, Albert S. (WI) American Radiator It Standard Sanitary Corp., 6920 Franklin Ave. New Orleans 22. La. ADCOCK, Lawrence W.. Sr. (W) 562 E. Main St.. Logan. Ohio (Logan Pottery Co.) ADCOCK. Lawrence W.. Jr. (W) 1547 Empire Xd.. WickiiiTe. 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. Brooklyn 22. N. Y. AFFLE3BACH. Harry (Ei R.R. 4, Frankfort, Ind. (Ingram-Richardson, Inc.) AGARWAL. Gopal Mohan 104 E. 15th Ave., Coiumbus 1. Ohio A. G. DER GERRESHEIMER GLASHUTTENWERXE (L. Breuer) Dusseldorf-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.. Washington 4, D. C. AKAM. J. W. (S) Nateo 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. Emst (W) I3-B-3 Redfield Village. Metuchen, X. J. (General Ceramics Corp.) ALBERT. Joseph (W) 1868 Windemere Dr.. N. E. Atlanta. Ga. (Albert Pottery) ALBERTALLI. Stephen L. (G) Corning Glass Works. Harrodsburg, Ky. ALBERY. D. F. (SFI) 1433 23rd St. N. W,, Canton 9, Ohio (Stark Ceramics. Inc.) ALBRECHT. Ernst Keratnische Fachschule Hoebr-Grenthausen/b Koblenz, Germany ALCOCK, Ronald H. "Ferrum" Espar.a 402--600, Avellanctla Buenos Aires. Argentina (Ferrum. L. A. de Ceramica y Metalurgia) ALDEN, Charies E. (G) 3427 Heather Downs Blvd. Toledo 14, Ohio (Kimble Glass Co.) ALELUIA. Joao C. F. Av. Araujo E. Silva 59 Aveiro, Portugal (Fabricas Aieiuia) ALENIUS, Cari Axel Xarhunkatu 23. Karbala. Finland (A. Ahlstrom Oy. Karhuia Bruk) ALEXANDER. A. E. (G) 3uchar.an Apts. 3-D. 155 E. 47th Sr. New York :7, N. Y. (Tittanv 4 Co.) ALEXANDER, John 3. (M) Southwestern Portland Cement Co. 1034 Wiishire 3lvd. Los Angcies 17. Caiif. ALEXANDER. John M. (MI) 2276 Hamilton .Ave. North Beilmore, N. Y. (Swindell-Dressier Corp.) ALGEMENE VSRENIGING VOOR De NEDERLANDSE AARDEWERK EN GLA5INDUSTRIE (W. J. Boiien) Haagweg 139. Riiswijk, 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. (RF) Ceramic Engineering Dept. University of Illinois, Urbana, III. ALLEN. Ben (G) Corning Glass Works, Coming, N. Y. ALLEN, Ralph (W) 1234 Paddock Hills Ave. Cincinnati 29. Ohio fBriggs Mfg. Co.) ALLEN. Richard L. (RI) E. J. Lavino 4 Co., Box 36S Newark, Calif. ALLEN, Robert G. (R) Robert G. Allen Co.. Box 110 Meehanicville. N. Y. ALLEN. Waller C. (B) Radio Corp. of America Chemical & physical Lab. 415 S. Fifth St.. Harrison, N. J. Roster 1 ILEX, Warren W., Jr. (Si J Hydraulic-Press Brick Co. fc South Park. Ohio ALLIANCE WARE, LTD. (R. E. Strain} f 3ox 550, Vancouver, B. C.. Canada &LLIEGRO. Lt. JG Richard (XJ) VA-55. F.i'.O., Nc' York. N. Y. f T.ISON. Adrian G. (R) | 3at:eile Memorial Institute 505 Kin? Ave.. Coiumouj 1. Ohio ALLMAN. Orin H. (G) , Kimble Glass Co. Owens-Illinois Technical Center * 1/00 N. Westwood Ave., Toledo 1, Ohio U.T. Leslie R. (SI) 547 Simon St., Hayward, Calif. (Kraftile Co.) ALTMANN. Berton G. (B) 16700 Cypress Way, Los Gatos, Calif. (Kaiser Aluminum A Chemical Corp.) ALTON BRICK CO. (Morris P. Hall) Box 05, Maryland Heights, Mo. ALTSCHULER, Otto (W) 271 Hawthorne Ave., Langhome, Pa. (Wenczei Tile Co.) ALUMINIUM LIMITED SALES, INC. (R. M. Mathieson) 650 Fifth Ave. . New York 20. N. Y. ALUMINUM CO. OF AMERICA (H. P. Bonebrake) 1501 Alcoa Bldg. Pittsburgh 19, Pa. AMERICAN COLLOID CO. (Paul Bechtner) Merchandise Mart Plaza, Rm. 315 Chicago 54, HI. AMERICAN ENCAUSTIC TILING CO,, INC. (Robert A. Williams, Jr.) 1000 N. Cannon Ave.. Lansdale. Pa. AMERICAN GAS ASSOCIATION (C. G. Segeler) 420 Lexington Ave. ; New Y'ork 17, N. Y. AMERICAN LAVA CORP. (R. A. McGinnis) Cherokee 31vd. Mtgrj. Rd. Chattanooga 5. Tenn. AMERICAN NEPHELINE LTD. (K. R. Deeth) 25 King St. W . Rm. 2550 Toronto. Ont.. Canada AMERICAN OPTICAL CO. (A. H. 3ennett) Research Center, Southhrtdge. Mass, j AMERICAN PORCELAIN ENAMEL CO. (Robert Long, Sr.) f 12S5 E. Keating Ave. I Muskegon 56. Mich. I AMERICAN POTASH Sc ! CHEMICAL CORP. (R. M. Curts) 99Park Ave.. New York. N. Y. AMERICAN RADIATOR & STANDARD SANITARY CORP. (James S. Goodman) 354 E. Broadway Louisville 4, Ky. I AMERICAN SMELTING & REFINING CO. (D. K. Wright) 120 Broadwav, New York 5, N. Y. AMERICAN WINDOW GLASS CO. (A. S. Cranaon) 20th Fioor Farmers Bank Bldg. Pittsburgh 22. Pa. AMES. R. N. (RI) 10718 S. Morgan St.. Chicago 45, III. (U. S. Steel Corp.) AMES. Robert G. (W) 69 Jefferson Ave., Crcsskill, N. J. (B. G. Corp.) AMIN, R. B. Alembic Chemical Works Co., Ltd. P. O. Chemical Industries Baroda J. India AMMERMAN. J. H. (RI) 202 Scribner, DuBois. Pa. (North American Reiractories Co.) AMRHEIN. Alan G.. Box 1659 Georgia Institute of Technology Atlanta. Ga. ANCHOR HOCKING GLASS CORP. (William V. Fisher) Lancaster, Ohio Vol. 35, No. 10 (1956) ANCIZAR-SORDO. Jorge Laboratorio Quimicc Nacional Muisterio de Minas y Pctroleos A pa nano 2577. Bogota, Colombia ANDERSON. Harlan U. 1424 Federal Way, Sal: Lake City, Utah ANDERSON. Harry L. (RI) Republic Steel Corp. Youngstown 1. Ohio ANDERSON, Herbert H. (G) 401 X Main St.. Port Ailegany, Pa. (Pittsburgh-Coming Corp.) ANDERSON, Orson L. (C) Bell Telephone Labs., Murray Hill, N. J. ANDERSON. R. E. (W) Robertson Mfg. Co.. Box 343 Trenton 5, N. J. ANDERSON, R. H. (S) Robinson Clay Product Co.. Box 545 Dover. Ohio ANDERSON, Robert E. (W) Iroquois China Co., 2520 Milton Ave. Syracuse 9, N. Y. ANDERSON. Robert R. 18S 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, 111. ANDERSON, William B. (E) Titanium Pigment Corp., Ill Broadway New York 6. N. Y. ANDREASEN. A. H. M. (Honorary) Oster Voldgade 10 Copenhagen K.. Denmark (Royal Danish Technical University) ANDREWS, Andrew I. (EFI) University of Illinois 204 Ceramics Bldg.. Urbana, 111. ANDREWS, Clifford M. Ferro Enamel S. A.. Caixa Postal 2948 Sao Paulo. Brazil ANDREWS. Ray (G) B. F. Drakenfeid A Co., Inc. Box 519, Washington, Pa. ANTAXI. Emiie Ferrzm S. A. de Ceramica A Metalurgia Espana 4Q2/6G0 Aveilaneca. Argentina ANTHONY. Benjamin F. (R) Ferro Engineering Co. 1400 Hanna 3!dg,, Cleveland 15, Ohio ANTHONY. George H. (R) 41 Marion Dr., Poland. Ohio (Youngstown Sheet A Tube Co.) ANTHONY. Harry L.. Ill (R) Mellon institute. 4400 Fifth Ave. Pittsburgh 13. Pa. ANWYL. Robert H. (S) Lisbon St.. Glenmoor MC-22 East Liverpool. Ohio APT. Elmer E. (S) A. C. Ochs 3 rick A Tile Co. Springfield. Minn. ARANGO. G. Botero Balboa 63-13. Medellin, Colombia (Cristaleria Peldar S. A.) ARCHBOLD. Waiter H.. Jr. (MI) 125 Smailwood Dr.. Snyder 21. N. Y. (Electro Refractories A Abrasives Corp.) ARCHIBALD. W. A. British Iron Sc 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, Pa. d'ARGENTEUIL. Comte L. de Menus N. V*. Ccramii;ue Maastricht Hoge Barakkcr.straai 6 Maastricht. Netherlands ARKETEX CERAMIC CORP. (George W. Shoemaker) 6 N. Walnut S:.. Brazil. Ir.d. ARMCO STEEL CORP. (R. S. 3urns) Research Librar-/, Middletown, Ohio armistead. w. <0 65 E. Firs: St., Coming, N. Y. (Coming Giass Works) ARMSTRONG CORK CO. (E. C. Emar.uei) Research A Development Center Lancaster. Pa. ARMSTRONG, Leiand R. (RI) 27 Morgan Ave., Washington, Pa. (Findlay Clay Products Co.) ARNOLD. Howard C. (EFI) 76 Standish Blvd., Pittsburgh 23, Pa. (Federal Enameling A Stamping Co.) ARNOLD. Robert M. (B) Arnold Engineering Co.. Marengo, 111. ARNOLD. Russell E. (SF) Box E. E. Akron Station, Akron 5, Ohio (Robinson Ciay Product Co.) ARNOLD. Thomas M. (WI) Red Wing Potteries, Inc. Red Wing. Minn. ARRANCE, Frank C. (WI) Coors Porcelain Co.. Golden, Colo. ARRANDALE. Roy S. (G) Thatcher Giass Mfg. Co.. Inc. 1901 Grand Central Ave.. Elmira, N. Y. ARRAS. George fE) 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. (G) 3110 Las Faldas Dr., Fullerton. Calif. (Beckman Instruments. Ir.c.) ARTIS. William E. iD) Nebraska State Teachers College Chadron. Nebr. ARW1NE. A. S. (R) Refractory A Insulation Corp. port Kennedy, Pa. ASDELL. Bernard K. (W) Edgar Division Minerals A Chemicals Corp. of America McIntyre. Ga. ASHER. John W. ;G) Box 382, Corning. N. Y. (Coming Glass Works) ASHWORTH. GEORGE L. Sc BROTHERS. LTD. (W. Gordon Evans) Broad Street Works Hanley. Stoke-on-Trent. England ASQUITH. Milton Redfearn Brothers. Ltd. Monk Bretton Glassworks Barnsley, England ASSOCIACAO BRASILEIRA DE CERAMICA Praca Coronet Fernando Prestes. 110 (Edificio do I.P.T.) Sao Paulo. Brazil ATWELL. George D.. Jr. (S) Bickerstaff 3rick Co. Box 1178. Columbus. Ga. AUER, Konrad F. Netstal, Kt. Glares. Switzerland (Kalkfabrik Netstal Ag.) AUKLAXD. Merrill F. (S) Ohio University. Dept, of Geology Athens. Ohio AULT. Neil N. (BI) Norton Co.. 1 New Bond St. Worcester 5, Mass. AUSKERN. Allan (BJ) Westinghouse Atomic Power Div. Box 1468. Pittsburgh 30. Pa. AUSTENAL. INC CR. C. Feagin) 224 E. 39th St.. New York 16. N. Y. Roster 3 ' AUSTERMAN, Stanley 3. (.3) i 7006 Andasol Ave., V'an Nuys, Calif. \ (.Atomics International) AUSTIN. Arthur 0. (B) Box 109, 3arber:oo, Ohio (A. O. Austin Co.) > AUSTIN. Charles E. (5) i Consolidated Brick Co. t Horseheads. N. Y. AUSTIN, Chester R. (3FI) Oxygen Converter Dept. Kaiser Engineers 1924 Broadway--Kaiser Bldg. Oakland 12. Calif. AUSTIN, Garth F. Gen. Del., Alfred. N. Y. AUSTIN, James Bliss (BF) United States Steel Corp. Rm. 2401. 525 William Penn PI. Pittsburgh 50, Pa. AUSTIN. Lewis M. (G) 2J34 Middlesex Dr., Toledo 6, Ohio (Owens-Illinois) AVERY, Robert C. Box 826. Alfred. N. Y. AVRiL. Jack J. 8304 Frances Folson Rd., S.W. Tacoma 99, Wash. AYDELOTT. Elliott C. (SI) Waverly, Pa. (International Salt Co.) A2EVEDO, Marcello R. V. de (I) Caixa Postal 2818, Sao Paulo, Brazil (Ceramics Sanitaria Porcelite S/A) B BAAB, Kenneth A. (RI) 628 Sixth Ave.. Bethlehem. Pa. (Bethlehem Steel Co.) BAARSON, Robert E. (M) Armour Chemical Div. Flotation Research Section 1555 '.V. 31st St.. Chicago 9, III. BA3A. P-.ui D. 358 Pennington St.. Elizabeth 2. N. J. BA3COCK. Clarence L. (GF) 1718 Potomac, Toledo 7. Ohio (Owen-Illinois) BABCOCK. M. G. (G) 618 Kenilworth Dr., Pittsburgh 34, Pa. (Pittsburgh Plate Glass Co.) BABCOCK. Paul R. (WI) Frenchtown Porceiain Co. Frenchtown. N. J. BABCOCK 4 WILCOX CO. (J. E. Brinckerhoif) 161 E. 42nd St., New York 17. N. Y. BACH. Carl H. (S) Tuthiil Bldg. Material Co. 545 E. 103rd St., Chicago 23. III. BACH. William E.. Jr. (M) 7712 Fontana Prairie Village 15. Kans. (Aluminum Co. of America) BACHER. Holland R. (W) Rock Tavern. N. Y(White Cloud Farms. Inc.) 3ACHMAN. Charles D. (G) 200 Shelburne Rd., R. R. 2 Millville. N. J. (Armstrong Cork Co.) BACHMAN. George S. (G) 151 W. Washington St., Shelbyville. Ind. (Pittsburgh Plate Glass Co.) BACHMAN. James R. (R) United States Steel Corp. Applied Research Lab. Monroeville. Pa. BACHMAN. Wheeler Carr (W) R.R. 5. Grafton. W. Va. (Carr China Co.) BACON, Frank R. (Gr) 3153 Darlington Rd.. Toledo 6, Ohio (Owens-Illinois) BACON, James F. (G) 130 Pritchard Ave.. Coming, N. Y. (Coming Glass Works) Vol. 35, No. 10 (1956) BADGER. Alfred E. (GF) Libbev-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio BAER. G. M. (K) R. C. Rcmmey Sor. Co. Hedley St. & Delaware River Philadelphia 37. Pa. BAGBY, Richard A. (3J) 15 Allenon Rd., Dayton 5. Ohio (Wright Air Development Center) BAGLEY. Norman H. (W) 206 Central Ave.. Caldwell. N. J. (Bell Telephone Laboratories, Inc.) BAILEY. Floyd (El) 840 S. Sixth Ave., Kankakee, 111. (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. (Plax Corp.) BAILEY. Richard J. Doulton Fine China Ltd. Royal Doulton Potteries Burslem, Stoke-on-Trent. England BAIN, Andrew R. The Whins, 26 Park Terrace Stirling. Scotland BAIN. 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 Coming 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) Sharo-Schurtz Co. 501 i.;ncoin Ave.. Lancaster. Ohio BAKER. Robert L. (G) 46 Highland Ave.. Weflsviile. N. Y. (Air Preheater Corp.) BAKER. Theodore C. (G) RR. 1, Wayne, Ohio (Owens-Illinois) BALDAUF. Earl E. (WI) 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. CA.P.EA.. Lanas-KM 7 C. GraL, Belgrano Buenos Aires, Argentina BALINKIN, Isay (W) University of Cincinnati Cincinnati 21. Ohio BALINT. Louis J. (B) 14185 Story Rd.. San Jose 27, Calif. (Kaiser Alnminum It Chemical Corp.) BALL. Albert L. (R) Bay State Abrasive Products Co. Westboro. Mass. BALL BROTHERS CO, INC Muncie. Ind. BANERJEE. A. Behar Firebricks 4 Potteries Ltd. P. O. Mugma. Dist. Manbhum. India BAQUE. Harold \Y. (GI) 1511 Mohican Dr , Pittsburgh 53. Pa (Corhart Refractories Co.) BARBA. Charles Z., Jr. (M) Creek Rd.. R. R. 1. Dcyiestown, Pa. (Sales Engineer; BARBER. Frci O (M) 783 Evening St.. Worthington. Ohio (Harrop Ceramic Service Co ) barber. Stephen w. (O Owens-Illinois 1700 N. Westwcod Ave.. Toledo 1, Ohiu BARBOUR. David J. (WF) 345 E. Highland Dr., Zanesville, Ohio BARBRE. Norris H. (S) Meilon Institute, *400 Fifth Ave. Pittsburgh 13. ?a. BARDSLEY, James J. 404 Spruce 5:.. Appalachia. Va. BARIUM REDUCTION CORP. (K. O. Priddy) South Charleston 3, W. Va. BARKER, Rolland C. (G) Glass Mfg. Dept., Lamp Div. General Electric Co.. Nela Park Cleveland 12, Ohio BARLETT. Helen 3. (BF) A C Spark Plug Div., General Motors Corp., Flint 2, Mich. BARNA. Gordon L. R. R. 7, Box 575, Tacoma, Wash. BARNES, Harry H. (BI) Wah Chang Smelting & Refining Corp. Herbhill Rd, Gien Cove, N. Y. BARNES. Lehman W. 434 S. Second St, Smithfield, N. C. BARNES. Wilson R. (R) Corhart Refractories Co. I6th & Lee Sts, Louisville 10, Ky. 3ARNET. Joaquin Ceramicas Kii-per Apartado 1243. Havana, Cuba BARNEY, Ronald N. (BJ) 5487 Cobb Dr, Dayton 3, Ohio (Wright Air Development Center) 3ARON. Jean Laboratoire ce Cor.troie des Produits Retractaires 15. Place Carnot Nancy (Meurthe e: Moseiie) France BARR. Harold N. (3) Glenn L. Martin Co. Nuclear Eng. Div. =710 Baltimore 3. Md. BARR. Harry (M) Consolidated Feldspar Dept. International Minerals 4 Chemical Corp. Box 1843, Trer.ton 7. N. J. BARR. Robert A. (M) 867 River Rd, Fair Haven. N. J. (Carborundum Co.) BARR. Seymour J. (S) Shenandoah Brick 4 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 Geveland Heights, Ohio (Basic. Inc.) BARRETT. Maurice (Life) 8 Oxcliffe Rd. Morecambe and Heysham, England BARRETT. Wayne E. (S) R. R. 1, West Des Moines. Iowa (Oskaloosa Gay Products Co.) BARRINGER. Lawrence E. (Honorary. WFI) 23 Front St, Schenectady 5. N. Y. (General Electric Co.) BARROWS PORCELAIN ENAMEL CORP. (Woodrow Carpenter) Langdon Rd. 4 Penn R. RCineinnati 13. Ohio Roster 5 I' t barta. r. BAUM, Frederick J., Jr. (3) I. Czechoslovak Ceramic and Glass Society Tecnnicka ul.c.5. Praha XIX. Czechoslovakia E. I. du Pont de Nemours St Co., Inc. Experimental Station, Chemical Dept. Wilmington, Del. Bartholomew. George a. (5; f United States Steel Corp. i. Applied Research Lab. Monroeville. Pa. I Bartholomew. George L. BAUMANN. Henry N.. Jr. (BFI) 1275 Wyoming Ave. Niagara Fails. N. Y. (Carborundum Co.) BAUMER. Leon N*. (R) i1 3ox 1009, Alfred. N. V. | 3ARTLSTT-COLLINS CO. 240 Rockingham Rd.. Pittsburgh 33, Pa. (Mellon Institute) ; (Harr:son I. Bartlett) Box 519 \ Sapulpa, Okia. I BARTLETT. E. E. (C) | -037 3oca Chica Blvd. \ Brownsville, Texas (BartIeic-CoJIins Co.) 1Bartlett. Harrison i. co Bartlert-Collms Co.. Box 519 Sapulpa, Okla. BARTON, James E. Box 2455, Clemson College Sta. Oemson, S. C. BAUMLER. Karl (G) Pittsburgh Corning Corp.. Sedalia, Mo. BAUSCH <* 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. BARZAGHI, Luciano Ceramica Sao Caetano Rua Roa Vista. 13J-4* andar Caixa Postal 273. Sao Paulo, 3razil (0. S. Buckner) Westboro, Mass. BEAL, D. S. (E) 15 Oak Dr., Poland, Ohio (Youngstown Sheet Sc Tube Co.) [BASIC, INC. (H. C. Lee) BEALS, M. Dougias (BI) i 345 Hanna Bldg., Cleveland 15, Ohio Research Lab., Titanium Division BASLER. Wayne G. (XJ) National Lead Co., South Amboy, N. J. 1504 N. Belt West. Belleville. III. BEALS. Robert J. (WI) (Aluminum Co. of America) 109 Ceramics Bldg. BASS, N. W. (R) Brush Beryllium Co., 4301 Perkins Ave. Cleveland 5, Ohio University of Illinois, Urbana, 111. BEAM, James R. (WFI) 300 Ruth Ave.. Mansneld. Ohio BASSETT. Leon B. (3) (Ceramic Engineering Service) i Box 234, Alfred, N. Y. BEARD. Clinton L. (WI) (State University of New York. College of Ceramics) Globe-Union. Inc.. 900 E. Keefe Ave. Milwaukee 12, Wise. BASSETT. Ray E. (S) Acme 3rick Co.. 3ox 425 Fort 'Worth 1, Texas BEARDSLEY. Ginron J. (W) 666 E. Findlay St.. Carey, Ohio (Porcelain Products. Inc.) BASSETT, Robert (S) Central Commercial Co. Darlington, Beaver County, Pa. BEASLEY. Dennis R. (C) 659 McCuilogh St.. Morgantown, W. Va. (Struc-Tite Fibers. Inc.) | BATEMAN. L. A. (E) 1 EJjer Co.. Enamel-Ware Div. BEASLEY, Robert M. (G) Coming Glass Works, Corning, N. Y. Salem, Ohio BEATHARD, Robert X. (W) BATES. A. Allan (B) Portland Cement Assn. General Tile Carp., Box 38 El Segunco. Calif. 33 W. Grand Ave., Chicago 10, 111. BEATON. Orville (W) BATES, Charles E. (S) Gem Clay Forming Co.. Sebring, Ohio 123 Walnut St., Brookviile. ?a. (Harney Co.) BEAVER. Wall ice W. (M) Brush Beryllium Co.. 4301 Perkins Ave. BATES. Edgar A. (B) Cleveland 3. Ohio 4506 Toni Lane. San Diego 15, Calif. (Convair) BEAZELL. William H. (G) American Window Glass Co. BATES. Frank O. (W) Solar Mfg. Corp.. E. 46th St. at Seville. 20th Floor. Farmers Bank Bldg. Pittsburgh 22. Pa. Los Angeles 53. Calif. BEBBIXGTON, Philip J. (E) BATES. P. H. (Life. XF) 1620 Seventh St., N., St. Petersburg. Fla. 2 Barker Lane. Saxonville. Mass. (Arthur D. Little. Inc.) BATES, W. S. (R) Spectrochemical Labs., Inc. 1010 Wood St.. Pittsburgh 21. Pa. BATESON. H. Marshall 68 Spring Grove Loughton. Essex. England BECHTNER, Paul (M) American Colloid Co. Merchandise Mart Plaza, Room 313 Chicago 54. 111. BECX, Elmer W. (M) Ceramic Suppiy Co., Crooksville, Ohio (Thermos, Ltd.) BATESON, Sydney (G) | Duplate Canada Ltd. I Oshawa. Ont., Canada j BATRUK. Stanley J.. Jr. (E) i New Jersey Zinc Co. 160 Front St., New York 38, N. Y. BATTISTA, George Box 747. Alfred. N. Y. BAUER. Richard M. (M) 723 St. Louis Ave.. Zanesville, Ohio (Mosaic Tile Co.) BAUER. Wolf G. (S) | 5622 Seaview Ave.. Seattle 7, Wash. | (Consulting Engineer) BAULEKE. Maynard P. 6910 Meadow Brook Blvd. Minneapolis 26, Minn. BECK. J. Howard (M) BTU Engineering Co. 440 Somerville Ave. Somerville 43, Mass. BECX, Norman R. (G) Carr-Lowrey Glass Co. Baltimore 3, Md. BECX, Warren R- (B) Minnesota Mioing A Mfg. Co. 900 Fauquier Ave. St. Paul 6, Mian. BECXEMEYER. Harry J. (W) Universal-Rundle Corp. W. Keith McAfee Lab., Box 1268 Mahoniogtown, Pa. BECKER. Bmce X. (G) 602 N. Marshall St., Lancaster, Pa. (Radio Corp. of America) Vol. 35, No. 10 (195*3) DECKER, Martin G. (5) Brookhaven Pressed 3ricx Sc Mfg. Co. Box 542. Brookhaven. Miss. BECKER. Walter D. (S) Brookhaven Pressed 3rick Sc Mfg. Co. Box 542. Brookhaven, Miss. BEECHER. Milton F. (RF!) 50 Woodland Rd.. Holden. Mass. (Norton Co.) BEELER. L. S. (W) Reynolds Metals Co., 2500 S- Third St. Louisville 1. X>\ 3EERMAN^ Henry P. (B) Philco xube Laboratory, Church Rd. Lanscale, Pa. BEERS. Roland F. (B) Box 1019, Troy, N. Y. (Roland F. Beers. Inc.) BEETON, Earl E. (GI) 1604 Lincoln St., Bethlehem, Pa. (Western 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 & POTTERIES LTD. <A. Banerjee) P. O. Mugma, Disc. 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. ?a. BELD. George H. <W) Keivinator Div. American Motors Corp. 1600 Clyde Park Ave.. S. \V. Grand Rapids 9. Mich. BELXOWSKI. Arthur V. (G) 161 Whitienton St., Taunton. Mass. (General Electric Co.) BELL, Clarence D. Box 3453, Clemson College Statisn Clemson. S. C. BELL. Kenneth E. (S) 549 Lacasse Ave.. Apt. 6 Easrview, Ont.. Canada (Ottawa Brick !r Terra Cotta Co., Ltd.) BELL. Richard (M) Beil Clay Co., Gleason, Tenn. BELLAMY. Harry T. (R) Armour Research Foundation 10 W. 35th St., Chicago 16, III. BELLAMY. L. B. (R) Abrasive & Metal Products Co. 729 Meldrum Ave., Detroit 7, Mich. BELLIDO, 3artolome Darnis Director Gerente de ME.R.S.A. Lugones (Oviedo), Spain BELOW, Henry (W) Pennsbury Pottery, Morrisville, Pa. BENBENEK. Raymond (SI) Canada Brick. Ltd. Streetsville, Ont.. Canada BENDER. Bob G. (GI) CBS-Hytron, Kent & Warren Sts. Newburyport, Mass. ^ BENDER, John H. (R) Denver Fife Clay Co., Box 5510 Denver 17, Colo. BENEDICT, Virginia American Ceramic Society 4055 N. High St., Columbus 14, Ohio BENJAMIN ELECTRIC MFG. CO. (Hoyt ?. Steele) Des Plaines, III. BENNER. Stanley G. (E) Johns-Manville Research Center Manville, N. J. Roster 7 3ENNER. W. J. i R; 730 Romor.a Rd , Wiimette, II!. (Pyro Refractories Co.) BENNETT, A. H. (G) -' American Optical Co., Research Center Southbridge, Mass. BENNETT, A. Lee (Sri> 1330 Las Flores Or., Glendale, Calif. (Pacinc Clay Products) BENNETT, Dwight G. (Erl) 20a Ceramics 3Idg. Universirv of Illinois. Urbana, 111. BENNETT. Edward \Y) 3. G. Corp. 321 Broad Ave.. Ridgeneld, N. J. BENNETT, Frederick R. (R) Box 325. Hartsville. S- C. (Carolina Refractories Co.) BENNETT, Harry J. (W) Crooksville China Co. Crooicsville. Ohio BENNETT. Myles ?. (BI) 6552 N. Oldham Lane Saa Gabriel, Calif. (Gladding, McBean ir Co.) BENNETT. Waiter R. (S) Acme Brick Co., Millsap, Texas BENSON. Edward (R) New Departure Div. i General Motors Corp., Bristol, Conn. 1 BENTZ, George 3. (W) . I National Plumbing Pottery. Inc. 305 N. Front St., Columbus 15, Ohio BENZEL. James F. J 840 Techwood Dr., N. W., Atlanta, Ga. BERG. Morris (B) 315 Pleasure Rd., Lancaster, Pa. (Radio Corp. of America) BERGER. Bernard M. (E) Dept. 817, Sears, Roebuck & Co. 925 S. Homan Ave., Chicago 7, III. BERGER. Donald Francis 1(G) 41 W. South St.. Painesville. Ohio (Diamond Alkali Co.) I BERGERON. Clifton G. (EH 1 Whiripooi-Seeger Corp'l, 300 Broad St. St. Joseph. Mich. BE5G-IVERSEN, Wiggo A/S Egersunds Fayar.csfabrikj Co. Egenuod. Norway BERKELHAMEK. Louis H. fEI) 5621 Howard S'.. Skokie. !H. (Ohm:e Mfg. Cj.i BERNARDINI. Guv F. i\V) Box :? P.. R. 1, Latrobe. Pa. (ScupakoiT Div.. Carborundum Co.) BERNS. Milton H. (M) 249 Charlotte Ave.. Hamburg, N. Y. (Electro Refractories & Abrasives Corp.) BERNSTEIN. Leonard (B) Kwikset Locks. Inc. 516 E. Santa Ana St.. Anaheim. Calif. BERNSTORF. Robert B. CD) Box 679. East Liverpool. Ohio (Commercial Decal. Inc.) BERRIN. Lloyd c/o Jack Cole. 5731 '4 Carlton Way Hollywood 23. Calif. BERRY. Thomas F. (B) 527 J4th St.. Union City. N. J. (Radio Corp. of America) BERTHA. Edward J. 3310 N. Calvert St.. Baltimore IS. Mil. BESSE. Richard W. (\V) Onondaga Pottery Co. I8S6-58 W. Fayette St. Syracuse 4, N. Y. BESSEY, George E. Chalk Lime St Allied Ind. Res. Assn. 30 Church St. Welwvn, Herts. England BEST. Edison F. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio BEST. WILLIAM S. (S) 1 R.R. 3. New Bethlehem. Pa. (New Bethlehem Tile Co.) I VOL. 3o. No. 10 (Iflofi) BETHLEHEM STEEL CO. (Hobart M. Krar.cr) 3c:hlchcm, Pa. BETTISON. L. S. (S) Chambers Brothers Co. 52nd 3c Media St., Philadelphia 31, Pa. BETZ. GEORGE C. (MFI) Metal 3c Thermit Corp. 100 Park Ave., New York 17, N. Y. BETZ. Wilbert A. (\V) U. S. Potters Assn. 104 E. Fourth St., East Liverpool, Ohio BEVERIDGE, John F. (\V) 10 Stanford Sc., Halifax, Nova Scotia ( Roval Canadian Navy) BEVIS. Ralph E. (El) 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., Ridgeneld. N. J. BICKERSTAFF CLAY PRODUCTS CO. (L. N. 3ickersta.T) Box 1173 Columbus, Ga. BICKERSTAFF, L. N. (S) BickerstarT Clay Products Co. Box 1173, Columbus, Ga. BICKFORD. Fred A. (G) Box 29. R.R. 2. Campbell, N. Y. (Coming Glass Works) BIDDLE. George J. (R) 208 S. LaSalle St.. Chicago 4. 111. (Illinois Clay Products Co.) BIDDULPH. Albert 11 Holden Rd. Wolverhampton. Engiand (Ferro Enamels Ltd.) BIELS7EIN, Hans O. (R) Metallurgy Research Branch Aeronautical Research Lab. (WCR.RL) WADC. Wright-Patterson AFB, Ohio BILLHEIMER. John E. (WJ) Highwood, Easton Ave. New Brunswick. N. J. (Mieehell-3isseil Co.) BILLIAN, Carroll J. (G) Owms-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. 52od St.. Los Angeies 53, Calif. BIRCH, Raymond E. (RFI) 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.. Ill (S) Guignard Brick Works, Box 480 Columbia, S. C. BISHOP, Harold E. (G) Owens-Coming Fibergias Corp. Anderson, S. C. BISHOP, Laveme R. (R) AInminum Co. of America 3300 Missouri Ave., East St. Louis, 111. BISSELL. Don \V,, Jr. (RI> 703 Green St.. Rockton, III. (Tpsen 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, K. R. iG) Kimbie Glass Co. 1700 N. Westwood Ave., Toledo, Ohio BLACKBURN, A. RCi( (Ml) 204 N. State St., Westerville, Ohio (Ram. Inc.) BLACKBURN, Douglas H. (G) 2921 Langley Ct. Washington 16, D. C. (National Bureau of Standards) BLACKWOOD. James M. (RI) 124 First S. Niagara Fails, N. Y. (Carborundum Co.) 3L.-.ES. Henry M.. II (B) 339 N. Hoover Ave., Whittier, Calif. (North American Aviation) BLAHA. Emil (R) 415 Asctcead Rd., Cheltenham, Pa. (Selas Corp. of America) BLAIR. Gerald E. (G) 5667 Palmyra Rd., Pittsford, N. Y. (3ausch & Lomb Optical Co.) BLAIR, Marion W. (Sr) 2131 S. Center St., Terre Haute, Ind. (Manufacturers Equipment Co.) BLAISON, Pierre Societe des Electrodes Sc Refractaires "Savoie" 16. Rue de Monceau. Paris 3*. France BLAKE. William V. (RI) Macxlin Abrasive Co., Jackson, Mich. BLAKELY. Alexander M. (B) Precision Grinding Wheel Co., Inc. 3301 Torresdale Ave. Philadelphia 36. Pa. BLANCHARD. M. Kenneth (E) A. O. Smith Corp., 3533 N. 27th St. Milwaukee I, Wise. BLAU. Henry H. (Crl) Federal Glass Co.. 515 E. Innis Ave. Columbus 7. Ohio BLAZOVIC. Phil. Jr. (M) 3236 Western Ave. Highland Park. III. ; Consolidated Feldspar Dept. International Minerals Sc Chem. Corp.) 3LECHEISEN. J. (E) Rosiclare Lead Sc Fluorspar Mining Co. Rosiclare. III. BLENKO. William Her.rv. Jr (C) 1412 Main St.. Milton, W. Va. (Blenko Glass Co.. Inc.) BLESSING. Robert Lee SI) 1714 Cresrwood Dr. Mineral Wells, Texas (Texas Vitrified Pipe Co.) BLISS. L. G. (M) Foote Mineral Co.. 18 W. Cheiten Ave. Philadelphia 44, pa. BLISS. Roderick T. (S) 35 E. Center St., Nesquehoning, Pa. (Deister Concentrator Co.) BLITON. Jerald Box 326. Alfred. N. Y. BLOCKSIDGE. Arthur 3.. Jr. (R) Jones & Laughlin Steel Corp. 40 Longworth St.. Pittsburgh 7. Pa. BLODGETT. William E. (W) 11 Lakeview Terrace, Woburn, Mass. (R. Guastavino Co.) BLOHM. Richard E. (E) 1657 E. Waveriy Way Baltimore 12, Md. (Rheem Manufacturing Co.) BLOME. James C. 1108 S. First. Champaign, HI. BLOOM. Ray A. (R) Technical Library Tunken Roller Bearing Co. Canton 6. Ohio BLOOR. C. A. (W) Universal Gay Products Co. Sandusky, Ohio BLOORE, Robert 3oulton Swinnertons. Ltd. Hanley, Stoke-on-Trent. England Roster 9 BLUE RIDGE GLASS CORP. (J. H. Lewis) Kingsport, Tenn. BLUM, Seymour f.WI) Raytheon Manufacturing Co. Research Div. Waltham., .Mass. 3LUME. Arthur J. (SI) Murray T:ie Co., Clover-port, Ky. 3LUMER. Frtdoiin (D> Lane Gate Rd. Coid Spring, Putnam Co.. N. Y. (Commercial Decal, Ir.c.) BLUNT, Royden A. (GF) Buck Glass Co., Sal E. Fort Ave. I Baltimore 30, Md. I BLYTHE COLOUR WORKS. LTD. Cresswell. Stoke-on-Treat, England BOARDMAN. Charlotte X. (R) Thomas A. Edison. Inc. 51 Lakeside Ave., West Orange, N. J. 30BROWSKY, A. R. (R) 2012 Pontiac Rd.. R. R. 2 Ann Arbor, Mich. (Ford Motor Co.) BOEKER, V. W..(GI) Owens-Coming Fibergias Corp. 598 Madison Ave.. New York 22, N. Y. BOGATAY. Paul (D) 45 W. Weisheiraer Rd. Columbus 14, Ohio (Ohio State University) BOGNAR. Edwin J. (RI) Bognar & Co.. Inc. I/ll First National Bank 3ldg. Pittsburgh 22, Pa. BOHN, Edward L. (R) Mullite Refractories Co.. 10 Canal St. Sheiton, Conn. 30LANOVICH. Melvin (S) 3118 Palmer Sq.. Chicago 47, 111. (Illinois Brick Co.) BOLE. George A. (XF) Engineering Experiment Station Ohio a tat: University Columbus 10, Ohio 30LLEN. W. J. Algemene Vereniging voor de Nederiancse, Aarcewerk en Giasindustrie. Haagweg 139 Rijswijk. Netheriar.es BOLLINGER. Robert H. (MI) Georgia Kaoiin Co., -33 S. Broad 5t. Elizabeth 3. N. J. 30L0N. Dtvic G. 'RD 5525 E. 31st.. Indianapolis. Ind. fSales Representative) BOLTON. Harry 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. 30NE3RAKE. H. P. (M) Aluminum Co. of America 1501 Alcoa Bldg.. Pittsburgh 19, Pa. BONNOT CO. (B. T. 3onnet) 722 Mulberry Rd.. S. E., Canton 2, Ohio BONNOT. B. T. (MF) Bonnot Co.. 722 Mulberry Rd.. S. E. Canton 2, Ohio BONSTEIN. Thomas E. (W) Paper Makers Importing 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.) BOPP. Harold F. (GF) 67 Gorton St.. Coming. N. Y. (Coming Glass Works) BOROM. Marcus P. Box 128, Waynesboro. Ga. Vol. 35. No. 10 (1050) BOROS, John (W) Pacific Tiie & Porcelain Co. 7716 E. Olive St., Paramount, Calif. BOSCH. F. M. Lab. Anorganisch-Tech. 4 Electro chem.ie 22 Piatcaustraat. C-hcnt, Belgium BOSLER, Krcil (E) 56 Macti Rd., Corner Lakeview Dr. Gardner, Mass. (Florence Stove Co.) BOTFIELD. George B. (R) Botneld Refractories Co. Swanson 4 Clymer Sts. Philadelphia 47, Pa. BOTFIELD REFRACTORIES CO. (George B. Botneld) Swanson 4 Clymer Sts. Philadelphia 47, Pa. BOTHE. James V. (G) 3 Pyrex St-, Coming, N. Y. (Coming Glass Works) BOUDER. Norman M., Jr. (G) 4820 Roland Ave., Baltimore 10, Md. (Pemeo Corp.) BOURGERIE, R. D. (W) Radio Materials Corp. 3325 N. California Ave., Chicago 18, 111. BOVEE, Benedict A. (M) 1837 Winter Rd. Grand Island, R.F.D., N. Y. (Harper Electric Furnace Corp.) BOWDEN, James J. (3) Bowflux Co., 3ox 65, Cortland, Ohio BOWEN ENGINEERING. INC. (William A. Bowen) North Branch, N. J. BOWEN. William A. (Ml 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 M. Ohio (Battelle Memorial Institute) BOWES, Urban E. (GF) Owens-Illinois. Box 1035--1036 Toledo 1. Ohio BOWMAN. Donald C. (E) 579 S. Craig ?l.. Lombard. III. I 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-Walker Refractories Co. 609 Jackson Bldg.. Butfaio 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. (MI) Box 2414, Greensboro, N. C. (Carolina Pyropbyllite Co.) BOYD, L. R.. Jr. (S) Teague Brick 4 Tile Co.. Box 329 Teague. Texas BOYD. Robert C. (EFI) American Standard. 1541 S. Seventh St. Louisville 3. Ky. BOYLES. John P. (W) Edwin M. Knowles China Co. Newell, W. Va. 30YNTON. Claudia G. i.D) 1012 N. Franklin S:. 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.. Railroad Ave. Port Allegany. Pa. BRA.CK3 ILL. Charles E. (R) 1650 Liggett Ct.. St. Louis 19. Mo. (Laciede-Christy Co.. Div. H. K. Porter Co.) BRADEN. Roger W. (M) Hammond Lead Products 526 Calumet 31dg., Hammond, Ind. BRADEN, William E. Ferro Corp., Far East Div. Box 6130, Kowloon. Hong Kong BRADFORD, Virgil E. (WJ) 574 E. Gates St., Columbus 6, Ohio BRADLEY. Alan L. Cullinan Refractories Ltd. P. O. Olifantsfontein Transvaai. South Africa BRADLEY, Charles A.. Jr. (G) Pir.ewcod Acres, R. R. 3. Coming. N. Y. (Coming Glass Works) BRADLEY, Edward L. Georgia Institute of Technology Box 4985, Atlanta, Ga. BRADLEY. Fer.nimore N. (I) 940 Oregon St.. Palo Alto, Calif. BRADLEY. R. S. (RFI) 4 Park Circle. Mexico, Mo. (A. ?. Green Fire Brick Co.) 3RADSTREET, Samuel W. (E) Armour Research Foundation 10 W. 35th S:.. Chicago 16, 111. BRADWELL, Cyril (RI) Parkhurs: Apts. 7B 3arbara 4 Marion Sts., Bethlehem, Pa. (Bethlehem Steei Co.) BRADY. Earl (S) Box 522. Waskom. Texas (Acme 3rick Co.) BRADY. John G. (3) Dept, of Mines 4 Technical Surveys Ceramic Section. 40 Lydia St. Ottawa. Cnt.. Canada 3RADY. Justin M. (W) 1320 N. Delaware. Apt. 604 Indiar.apo.is. Ind. (American Art Clay Co.) BRADY. T. E. (R) Surface Combustion Corp. 2375 Dorr St., Toledo 1. Ohio BRAIN. Dougias G. (W) 1960 Jane St. Toronto 15, Ont.. Canada (American Standard Products) BRAMLETT, William P.. Jr. (GI) Cumberland Rd.. R.R. 2. Millville. N. J. (Armstrong Cork Co.) BRANDT. Kristian H. (3) 1076 Karesh Ave.. Pomona. Calif. (Convair) 3RANDT. Martha W. (G) National Glass Budget 800 Grogan Bldg.. 510 Wood St. Pittsburgh 22. Pa. 3RANDT. Neill M. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13, Fa. BRANDT. William O. (WFI) 2951 Delor Dr., Los Angeles 32. Calif. BRANT. Arthur M. (R) 116 Hampden Park Dr., Tiffin, Ohio (Basic, Inc.) BRANT. David G. (RI) 39 Valley View, Tiffin. Ohio (Basic. Inc.) BRASHARES. C. A. (R) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22. Pa. Roster 11 RAiSi-'i ELD. rienry C. i U t K.K. i. Stcvena Rd.. Foster, Ohio (Oereral !e-:tr:c Co.) RAUCXMAN. A Ivin J. 3 Kern Ramble. Austin, Texas LA UN. Cary A. 3ox 827. Allred. N. V. R A V. Kenneth J. ( W) A'enceei Tiie Co. Kia? *& r.:erprisc Ave. Trer.ror.. X. J. RA.YKOVICH.TV F. (W) Husphryes Manufacturing Co. 231 E. Fifth St., Maosheid, Ohio 'raxilian Ceramic Society--see Associacao 3rasileira de Ceramica REEDLOV'E, James G. (BI) 703 James 3lvd. Signal Mountain. Tenn. I American Lava Corp.) fiKEXE. George A. (G) Industrial Coiloids Co. Eraier.ton, Pa. BREEZE, Lewis K. (E) 501 E. 2S8th St., W'illowick. Ohio (GLascote Products, Inc.) BRZITWIE3ER,-Robert H. (R) 1615 W. 27:h. Pueblo. Colo. (Standard Fire Brick Co.) BRHKXE, Trygve Box 266, Stavanger, Norway (Stavangerdict) BREMNER, Robert P. (G) T. L. Smith Co. 2SJ5 N. 32nd St. Milwaukee 10, Wise. BRENNER. Harold M. (E) B. F. Drakenfeld Sc Co., Inc. Washington, Pa. BRENNER, R. F. (GF) Anchor Hocking Glass Corp. Lancaster, Ohio BRESLICH. Francis N.. Jr. 3903 1 -:h Ave., S.. Seattle 3. Wash. BRETZ. L. A. (S) 1713 . aeodan Dr., Pittsburgh 16, Pa. CNATCO Corp.) BREWER. Bob (S) Alamo Clay Products Co., Inc. 3ox 93. Elmer.corf. Texas BREWSTER. Gordon F. (G) 3C7 Ridge Read E.. Williamsoa. N. Y (Bausch & Lomb Optical Co.) ( BRIAN, Charies (W) Paper Makers Importing Co., Inc. *4 S. Second St., Easton. Pa. BRIAN, Dick (\V) -122 Florida Ave.. Chester, W. Va. (Hanthaw Chemical Co.) 3RIAN. S. Douglas (W) Paper Makers Imoorting Co., Inc. 44 S. Second St.. Easton. Pa. BRICKHOUSE. Robert E. (R) 206 Fairlawn Blvd.. Zelienople. Pa. ! Tohns-Manville) [ BRIGGS MANUFACTURING CO. (A. J. Raiblei 415 W. Seymour Ave. Cincinnati 16. Ohio ; Brigham. Ralph v.. jr. cwi) 3eef Rd.. R. R. 3. Syracuse 7. N. Y. `Onondaga Pottery Co.) 3RINCKERHOFF. J. E. (R) 3abcock 4 Wilcox Co. 161 E. 42nd St.. New York 17. N. Y. Brindley. George w. cbi Dept, of Ceramic Technology Pennsylvania State University University Park. Pa. Brinkman. Robert ;. 3209 Wayne Ave., Dayton 10, Ohio BRISBANE. S. M. 40 Riverdale Rd.. Hawthorn E2 Victoria. Australia (Common wealth Scientific St Industrial Research Organization) Bristow. Robert h. rwn 57 Sequoia Rd.. R. R. I Ballston Lake. N. Y. i General Electric Co.) Vol. 35. NO. 10 no.'if)) 3R1TCHER. Gordon ('A') 50b Berkeley Dr., Syracuse 10, N. Y. (Syracuse Po::ery, Ir.c.) BRITISH CERAMIC SOCIETY Federation House Stoke-on-Trent. England BRITTAIN, Clifford G. (RJ) Autumn St.. Worcester, Mass. (Norton Co.) BRITTON. Marvin G. t B) 121 Hornby Dr.. Painted Post. N. 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) 40J Emerson Ave., Aspinwail Pittsburgh 15, Pa. (Krieg Piston Ring Co.) BROSXE, William F. (S) Aircraft-Marine Products. Inc. 2100 Paxton St., Harrisburg, Pa. BROWER. William S., Jr. (WJ) National Bureau of Standards Div. 9.1. Washington 25. D. C. BROWN, Arthur E. 605 Greenway Dr., Florence. S. C. BROWN. C. Justus. Jr. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broaawav, Toledo 5. Ohio BROWN. Clarence B.. Jr. (M) Hardinge Co., Inc.. York.' Pa. BROWN. Colin C. (G) 21 Medbury Ave., Cuba. N. Y. (Cuba Cheese & Trading Co.) 3ROWN, Donald Nicoi iG) 4 E. Third St.. Coming, N. Y. (Coming Glass \\>-It<i BROWN. Donovan ?. (R!) 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 (SI) Redford Brick Co.. 12th & Maury St. Richmond. Va. BROWN. Joseph A. (S) Baltimore Brick Co. 3200 E. Madison St.. Baltimore 5. Md. BROWN. Lawrence H. (WFI) Box 255. Miami 2. Fla. BROWN. Leslie (W) Lenox. Inc. 50 Meade St.. Trentnn 5. N. J. BROWN. Meredith C. (S) 60Q N. Friends Ave. Whittier. Calif. (Consultant1 BROWN. Raymond G. (R) Strategic-Udy Processes. Inc. Box 835. Niagara Falls. N- Y. BROWN. Raymond J. (X) Ceramic Age. Ninth-Chester Bldg. Cleveland 14. Ohio BROWN. Roy W. fG) 3842 Grennoch St.. Houston 25. Texas (Carborundum Co.) BROWN. Wilbur F. (GF) Lihbey-Owens- Ford Glass Co. Rnasford. Ohio BROWN. William E. (R) Rnx 217. R.R. 1. Norristown. Pa. (E. J. Lavino it Co.) BROWNE. Thomas C. (RI) 2115 Orchard Dr. South Plainfield. N. J. fTitanium Div.. National Lead Co.) UIJJWNELL. Wayne E. (SI) 126 Horne:: St.. Horneil. N. Y. (State University of New York. College of Ceramics) BROWNEWELL. George E. (Rl Diamond Alkali Co. 3ox 430. Pi-.r.esville. Ohio BRUCH MANN. Keimu: (M) Haeger Potteries. Inc., Dundee. 111. BRUSGGERHGFF, Charles (R) Mexican Zinc Co.. N. Rosita Coahuila. Mexico BRUHN, Hans W. (R) Corhart Refractories Co., Isc. 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 S:., Room 413 Columbus 15, Ohio BRUSSE, William. Jr. (E) Temco Inc.. 41C4 Park Ave. Nashville 9, Term. BRYANT, Eugene E. (EFI) Ferro Cor?., 4150 E. 55th St. Cleveland 5. Ohio BRYCE. Homer L. (S) Henderson Clay Products. Box 870 Henderson, Texas BUCHAN. Charles R. 840 Techwood Dr.. N. W,, Atlanta. Ga. BUCHAN, M. A. (RI) A. P. Green Fire 3rick Co. Troy, Idaho BUCK. Forrest W.. Jr. (E) 1209 Loucxs Ave.. Scottdaie. Pa. 'Lithium Corp. rf A.merical BUCK GLASS CO. (Royden A. 31unt) 841 E. Fort Ave.. Baltimore 30. Md. BUCK. Ivan E.. Jr. (E) ' 300 Greenwood Ave., R. R. 2 Cape May, N. J. (Keasbey Corp.) 3UCKLES, Paul E. 'MD 560 Brighton 31vd., Zanesviile. Ohio (Donald Kagar 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 ?. (S) 2439 Torrington Ave.. Parma 29. Ohio (Cleveland Builders Supply Co.) 3UESSEM. W. R. (B) Pennsylvania State University College of Mineral Industries University Park, Pa. BUFFALO POTTERY, INC (R. E. Gould) 25 Hayes PI. Buffalo 10. N. Y. BUGOSH. John (R) E. I. du Pont de Nemours & Co. Grasselli Chemicals Dept. Experimental Sta., Wilmington, Del. BUILDERS BRICK CO. (R. C. Houlahan) 3800 Ninth Ave.. S., Seattle 8. Wash. BULKLEY, Ronald ( B) Socony Mobil Labs.. Paulsboro. N. J. BULLARD. Edward R. (E) B. F. Drakenfeid St Co.. Inc. Washington. Pa. BULLARD. Keith (GJ) 3518 Hungnam PI. Tarawa Terr. 2. N. C. (U. S. Marine Corps) Roster 13 ULLOCK. ijyriJan I University of Birmingham Dept, o: Physical Metallurgy Edgbastcu, Birmingham ii, England BUNGE, Fred H. (M) M. A. Har.r.a Co.. Research Lab. Hibbing, Mir.n. 3URCH, Oscar G. (CF) Owcns-iiliaois Box 103a --1035. Toledo 1. Chio 3URCHENAL, Charles H. (\V> Cambridge Tile Mfg. Co., 3ox 71 Cincinaati 15, Ohio 3URCHFIEL. B. M. (RFi) 1458 Rosewood PI., Riverside, Calif. (Consulting Engineer) ,3URCHFIELD, Paul E. (G) Wyandone Chemicals Corp. 1609 Biddle Ave.. Wyandotte. Micb. BURDICK, Milton D. (WFI) National Bureau of Standards Engineering Ceramics Section Washington 25. D. C. BURDICK, Sidney D. (G) 104 Argonne St., Corning, N. Y. (Corning Glass Works) BURGESS. Blandtord C. (MF) USOM, A?0 923, San Francisco, Calif. BURKE, J. E. (B) General Electric Co., Research Lab. Schenectady. N. Y. 3URKZ, L. Roger (R; 1203 Peoples Bank Bldg. Pittsburgh 22. pa. (Chas. Taylor Sons Co.) BURKERT, John G.. Jr. 34 Green St.. Valley Stream, N. Y. BURKHALTER. Edward (SI) 7219 Interiaaken Dr. Tacoma 99, Wash. (Builders Brick Co ) BURKS, Cecil M. (RI) 705 Broadway. Steubenville. Ohio (Weirtc-t Steel Co. 1 3URLEY. Frank N. (W) Ingersoil-Kumphryes Div. Borg-Wamer Corp.. Mansheid. Ohio 3URLEY, Newtoa Ray (W) 1864 Dresden Rd., Zanesville, Ohio (Burlev Clav Products Co.) 3URLINGAME. Howard G. (E) California Metal Enameling Co. 6904 E. Siauson Ave. Los Angeles 22. Calif. 3URNAND, Guy M. (Lite) Messrs. Johnson. Matthey 4 Co., Ltd. 78, Hatton Garden London. E. C. 1. England BURNS. Frederick L. (W) 400 Grandview Dr,, Highland Village Zanesvtile, Ohio (Watt Pottery' Co.) 3URNS. Henry X.. Jr. (S) 1620 WaverLand Dr., Macon. Ga. (Burns Brick Co.) 3URNS. Joseph A.. Jr. (M) Joseph A. Bums 4 Son 124 Harrison Ave. Avalon. Pittsburgh 2, Pa. BURNS. R. S. (E) Armco Steel Corp., Research Library Middletown. Ohio 3URRISS. William K. (G) Consolidated Feldspar Dept. International Minerals 4 Chemical Corp. 20 N. Wacker Dr., Chicago 6, 111. BURROUGHS. F. H. (W) Box 1329. Trenton 7. N. J. (Star Porcelain Co.) 3URT0N. Howard 3. (G) 1618 Arlington Ave., St. Paul 17, Minn. (Minnesota Mining 4 Mfg. Co.) BURTON. W. A. (S) 803 E. Fourth St.. Mt. Pleasant. Texas (Paris 4 Mt. Pleasant R. S.) BURWTNKEL. Lawrence G.. Jr. (G) Pennsylvania Glass Sand Corp. Two Gateway Center. Pittsburgh 22. Pa. Vol. .35, No. 10 (1950) BUSH. Edward A. 200 Washington Ave., Vamlergrift, Pa. BUSH. James W. (SI) 4550 Deihi Rd., Cincinnati 38, Ohio (Xatco Corp.) 3L'SH. Ralph R. (M) 520 McKinley St.. North Canton. Ohio (Bonnot Co.) BUSH. W. G.. Sc CO. (John S. Herbert; 174 Third Ave., N., Nashville 3, Term BUSHONG. R. M. (R) National Carbon Co., Tiffin 8c Town Sts. Fostoria, Ohio BUSSEY. Donald A. (R) Kaiser Aluminum it Chemical Corp. Refractories Plant Moss Landing, Calif. BUSTEED, Donald J. (Rl) 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. 3UTKOV1CH, Edward M. (R) 2848 E. 97th St.. Chicago 17, 111. (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.) BUTTERWORTH, 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 & High Sts., Plymouth, Ohir (Fate-Root-Heath Co.) 3YRNS. Alva C. (P.) Kaiser Aluminum 4 Chemical Corp. 1924 Broadway. Oakland 12. Calif. c CABANILLAS. Oscar Gonzales (S) Puerto Rico Clay Products Corp. Box 4729, San Juan. Puerto Rico CABLE. John A. (W) 1011 22nd St. N. E.. Canton 4, Ohio (United 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 (United States Ceramic Tile Co.) CABOT, GODFREY L, INC. (Frank E. Daley) 46 Bayard St. New Brunswick, N. J. CACCAMISE. Charles T. (B) Electro Metallurgical Co.. 137 47th Si Niagara Falls. N. Y. CAHOON. John B.. Jr. (W) 791 McLeod St.. Livermore, Calif. (University of California) CAIN. Robert W. 603 W. Church St.. Champaign, 111. CAITO. A. M. (RI) Basic. Inc., Maple Grove. Ohio CALA, Charles F. (G) 144 Hoover Ri, Rochester 17. N. Y. (Banach 4 Lomb Optical Co.) CALABRESE. Donald W. Box 168. Alfred, N. Y. CALDWELL. Helen (D) Board of Education Administration Bldg., 1429 W. Seventh Burlington. Iowa CALDWELL, Smiley. Jr. ;C, 717 Ncwberry 5(2.. .\a.-hvil.'e. ( Ford Motor Co.) Caldwell. Sm,;ey m.. ;11 717 Newberry RJ. Brook Mear.e Subdivision Nashville. Term. Tc.nn. CALDWELL. William D. (El) Perfection Industries. !.nc. 1135 Ivar.hoe Rd.. Cleveland 10, Ohio CALLAHAN. 1-1. D |\VF!) United States Ceramic Tiie Co. East Sparta. Ohio CALLAHAN. Robert M. (B) 4553 Seville Ave. Los Ar.geies 53, Caiif. (Solar Mfg. Co.) CALLINAN. Edward E. (RFI) DeKalb Park. Center Square, Pa. (Alan Wood Steel Co.) CALVA, Roberto (3) 3258 E. Second St.. Wichita 8. Kans (Boeing Airplane Co.) CAMERON. David G. (M) Haller-Inc. 684 Ann Arbor Rd.. Plymouth. Mich CAMERON. Robert A. (G)' Coming Glass Works. Coming. N. Y. CAMPBELL. C. V. (MI) 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 N.E., Seattle 5, Wash. CAMPBELL. G. Donald (G) 621 Sheiby 5t.. Shelbyville. Ind. (Pittsburgh Plate Glass Co.) CAMP3ELL. I an (B) California Institute of Technology Div. of Geological Sciences 1201 E. California St. Pasadena 4, Calif. CAMP3ELL. J. Douglas (W) Lithium Corp of America. Inc. 540 Lincoin 3!dg.. 60 E. 42nd St. New York 1*. .V. Y. CAMPBELL. Robert J.. Jr. (B) University of Washington 324 Roberts Hall. Seattle 5. Wash. CAMPBELL. Robert M. (WFI) Alfred. N. Y. (State University of New York, College of Ceramics) CAMPBELL. Tom W. (R) Box 303, Poland. Ohio (Electro Refractories & 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 (Artnco Steei Corp.) CANNING. Robert (G) 202 Fox Chaoe! Rd.. Pittsburgh 38, Pa. (Pittsburgh Plate Glass Co.) CANNON. John D. 2167 Highview Rd.. S. W. Atlanta 11. Ga. CAPEK. Raymond G. 2646 S. Carence Ave.. Berwyn, III. CAPELLMAN. John J. fR) 1118 Highland St.. Tarentum I, Pa. (Pittsburgh Plate Glass Co.) CAPPS. Hubert. Jr. (S) R.R. 1. Coffeyville. Kans. (Ludowici-Ccladon Co.) CAPPS, Webster (G) National Bureau of Standards Washington 25, D. C. Roster 15 *\R3ORUNDUM CO. i.H. C. Martin) , Burraio Ave., Niagara rails, N\ Y. HARDER, rr-ccnck (Honorary, GF) i Corning Ciai Works Vyeor Div., Corning, N. Y. ,'AREV, J. Sheiccr. (D) Ds^t. of Design. University of Kansas Lawrence, Kar.s. 'ARIN'I, George r. 623 S. Semir.oie. Okmulgee. Okla. `ARL. John E. vGI) I Corning Glass Works ! Box 5-M. Ccrr.ir.g, X. Y. TARLSEN, Frederick L., Jr. Box 623. Georgia Tech., Atlanta. Ga. CARLSON'. Joseph A. (S) 50 Hawthorne St. San Francisco 5. Calif. (Kraftile Co.) CARLSON. Robert H. (\V) LTniversa;*Rundle Corp. Box 960. New Castle. ?a. CARLSON, Wiiliara G. (RI) 175 GierJteid Dr., Pittsburgh 35, Pa. (Westir.ghouse Electric Corp.) EARLYLE, Edward C. (S) Box 128, Ironton, Ohio (Cariyie Tile Co.) CARNAHAN, Tboras D. (MI) j 3. F. Draicenfeld <St Co., Inc. 3ox 519. Washington, Pa. uARJ.ES, Kenneth C. (G) Toledo Engineering Co., Inc. 3001 Syivacia Ave., Toledo 13. Ohio ZARNIGLIA. Stephen C. (B) rood Mach. 4 Chemical Corp. 161 . 42nd 5:.. New Yorlc 17, N. Y. CARO. Robert ( M) Hedi Schoop Art Creations, Box 384 North Hollywood, Calif. . CAROTHERS. Harry S. (Ml H. C. Spinks Clay Co.. Ir.c. 1C00 First National Hank Bldg. Cincinnati 2, Ohio wAROTKERS. R. 2. (Mr; H. C. Spinks Clay Co.. Inc. Box 82?, Paris. Tenn. CAROTHERS. Richard 3.. Jr. (M) H. C. Spinks Clay Co.. Ir.c. 3ox 829. Paris. Ter.n. CAROTHERS. T. E. (M) Gladding, McBean 4 Co. 2901 Los Friia 3lvd. Los Angeics 39, Calif. CARPENTER. F. Scott. Jr. (W) White Pigments Division Godfrey L. Cabot. Inc., 77 Franklin St. Boston 10. Mass. carpenter. Woodrow (E) Barrows Porceiain Enamel Corp. Langdon Rd. 4 Penn. R. R. Cincinnati 13. Ohio CARR-LOWREY GLASS CO. (Norman R. Beck) Baltimore 3, Md. CARROLL. Jerry W. (WJ) 417 5. Western Ave.. Kokomo. Ind. (American Radiator 4 Standard Sanitary Corp.) CARROLL. William F. (W) 3499 McNally Ave., Altadena, Calif. (Florence Ceramics Co.) CARRUTHERS. John L. (Sri) Lord Hall. Ohio State University . Columbns 10, Ohio CARTER, D. R. (M) Eagle-Richer Co. American Bldg.. Cincinnati 2, Ohio CARTER. F. 3. (WI) Tiffin 12. Ohio (American-Standard Corp.) CARTER. George J. 10202 20th X.E.. Seattle 55. Wash. CARTER. Gerard T. (W) Oakland St.. R.R. I, Box 1I-A Mattapoiscrt. Mass. (Corneil-Dubilier Electric Corp.) 7ol. 35. No. 10 (1956) CARTER. Herbert D. (WFi) J351 Dorchester Rd. Shaker Heights 20. Chic (Harshaw Chemical Co.) CARTER. J. Guild (M) Eureka Feldspar Mining 4 Milling Co., Inc., 190 W. State St. Trenton 3. N. J. CARTWRIGHT. S. V. (Si) 1224 Victoria Ave.. Corona. Caiif. (Jordan Tiie Mfg. Co.) CARVLIN. George M.. Jr. (R) Koppers Co., Inc.. Koppers Bldg. Pittsburgh 19, Pa. CASAMO. Charles C. (G) Sylvania Electric Products. Inc. Emporium. Pa. CASE MANUFACTURING CORP. (Willard G. Young) 1000 W. Pine St.. Robinson. III. CASSADY. Bert L. (R) 5115 S. Lewis Ave.. Tulsa 15. Okla. CATON. Milton W. (RF) 22490 Nevada Ave.. East Detroit. Mich. (Ceramic Div.. Champion Spark Plug Co.) CAVANAUGH. D. J. (WI) 822 32nd St.. Parkersburg, W. Va. (United States Ceramic Tile Co.) CAWOOD, Richard L. (M) East Liverpool, Ohio (Tatterson Foundry 4 Machine Co.) CAYFORD. James M. (El) 1317 Ridge Ave.. Steubenville, Ohio (Toronto Paperboard Co.) CECIL. Cowan L. (W) Lone Star Ceramics Co. Box 142)5, Dallas 34, Texas CECIL. Paul S. (E) Service Porcelain Enamel, Inc. Brill 8 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 4 CHEMICAL MFG. CO. (W. F. Wenning) 3ox 297. New Brighton. Pa. CERAMIQUE MAASTRICHT, NW. t Comte L. de Meeus d'Argenteuil) Hoge Barakkenstraa: 6 Maastricht. Netherlands CERMAK. Frank (WF) 1542 Union St.. Schenectady 9. N. Y. CERNY. Joseph J. (E) 5226-23 W. 26th St. Chicago 50 (Cicero) III. (Resistors. Inc.) CERHLLI. Nicholas F. 73 Forest Ave.. Caldwell. N. J. CHADEYRON. A. A. G. Cleveland Magnesite & Refractory Co. Ltd. Normanby Brickworks. Normanbv 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. Chelten Ave. Philadelphia 44, Pa. CHAMPION SPARK PLUG CO.. CERAMIC DIV. (James S. Owens) 8525 Butler Ave., Detroit 11. Mich. CHANTLER. L. W. (R) Standard Lime & Cement Co. Millville. W. Va. CHAPMAN. Alan T. 1563 Worthington St. Columbus, Ohio CHAPMAN. Frank E.. Jr. (E!) 1026 Middlesex Rd.. Baltimore 21, Md. (Pemco Ccrp.) CHAPMAN. G. Marsh (W) Harshaw Chemical Co. 6265 Wiehe Rd.. Cincinnati 13. Ohio CHARBONNiER. William ?. (R! Walsh Refractories Corp. 101 Ferrv S:.. St. Louis 7, Mo CHARLAND'. Tei L. (RI) 517 V.\ Kerr Dr., Midwest City. Okla. (Phillips Petroleum Co.) CHARLTON. Alex E. (W) Photoceramics. Ir.c. 1822 Western Ave., Cincinnati M. Ohio CHARTERS. 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, III. CHASE, Harry K. (R) 4040 Lakeshore Ave., Oakland, Calif. (Western Refractories Co.) CHATTAHOOCHEE BRICK CO. (Paul M. Cark) Chattahoochee, Ga. CHATTANOOGA GLASS CO. (Joe G. Venable) Caattanooga 10. Tenn. CHAUMEIL. Frederic Verreries de 3agneaux et Appert Ferres Bagneaux s/Loing Seine et Mine, 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 Steei Companies Ltd. Research 4 Development Dept. "Swinden Laboratories'', Moorgate Rotherham. Yorks. England CHICAGO POTTERY CO. (J. S. CliRord) 1920 Ciybourn Ave. Chicago 14. 111. CHICAGO VITREOUS CORP. (William Kogenson) 1425 S. 55th Court Cicero 50. 111. CHILCOTE. Joseph H. (R) 1907 16th St.. N.. Arlington 1, Va. (Bureau of Ships, Navy Dept.) CHILD, jirr.es i... Jr. .'Si Hancock 3rick 4 Tile Co.. 3ox i;0 Findlay. Ohio CHILDS. Clayton G. (B) 2257 N. York St.. Owensboro, Ky. (General Electric Co.) CHILDS, Edwin E.. Jr. (E) 1604 Greenspring Dr.. Lutherville. 2.1d. ( Pemco Corp.) CHILDS. Cary D. Box 326. Alfred. N. Y. CHING. Tung Rey (J) 31 Soares Ave.. Grd. Fir. Kowloon. Hong Kong (I-Feng Enamelling Co. (H.K.). Ltd.) CHIOCHETTI. Vincent E. J. (G) Box 67. West Clarksville, N. Y. (Bausch 4 Lomb Optical Co.) CHISHOLM. BOYD i WHITE CO. (Robert A. Ebersole) 610 W. 57th St. Chicago 21. 111. CHORMANN, O. I. (E) I9S Gregory Hill Rd. Rochester 20, N. Y. CHOTHIA, 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 4 The Faience Manufactory Aluminia Smallegade 45. Copenhagen F,, Denmark Roster 17 aSCHRISTIZ. Leonard D.. Jr. (R) nSHl" 343 Sound Reach Ave. wCfn Old Greenwich, Conn. Km (Babcock 4 Wilcox Co.) MCHRIST.MA.V. 3riar. 3. (W) (Jt 25 Eggerc Ave.. Metuchen, N. J. gjw ( Rhecm Manufacturing Co.) ftSofRiSTMAN, C. E. (E! *3 Federal Enameling 4 Skimping Co. ;3 Pittsburgh, ?a. U CHRISTMAN, K. M. (RI) Sg 1514 ll:h Sr.. N.E., Massillon, Ohio 59 (Massillon Reirac'.ories Co.) ia CHRISTOPHER, A. 3. (S) 3 Chambers Bros. Co, 52 5c Media Philadelphia 31, Pa. 3 CHU. Gordon ?. X. (E) ijS Research Laboratory, Pfaudler Co. % 1000 West Ave.. Rochester 3, N. Y. j CHUN. Lee m 11 Magnolia Rd., Yau Yat Chuen Kowloon. Hong Kong f CHUTTER, George A. (M) a Middle Kaddam Rd., Portland, Conn. V (Giobar Div.. Carborundum Co.) I CIA. MEXICANA DE REFRACTARIOS I A. P. GREEN, S. A. (H. Fetter) M Hamburgo 51, Apartaco Postal 71 Bis Mexico. D. F. CICHOWSXI. V. J. iE) i Fusite Corp.. 5000 Fertiview Ave. Cincinnati 13. Ohio CINCINNATI MILLING PRODS DIV. CINCINNATI MILLING MACHINE CO. (Hayward A. Gay) 4701 Marburg Ave., Cincinnati 9, Ohio i CLARE, Robert L. (Sri) | 212 Rector St., Perth Amboy, N. J. (Larede: Corp. of New Jersey) CLARK. Alee W. Beatson. Carle 5c Co.. Led. Rotherham. York, England CLARK. Arthur R. (3) Box 352. Far Hills. N.,J. t r oxlyr. Laboratories) CLARK. C. 3ur:on (3) 1756 Meadowerest Dr. Pittsburgh 28. ?a. (Harbison-Waiker Refractories Co.) CLARK. Daniel J. (S) Vitro Mfg. Co.. 50 Greenway Dr. Pittsburgh a, ?a. CLARK. H-jrace N. ' R) Refractory 4 L-.suiation Corp. 120 Wail 5t.. New York 5. N. Y. CLARK. James L. IS) 150 Yates St.. Denver. Colo. (Robinson 3rick 4 Tile Co.) CLARK, John D. (XI) 656 Lir.dley Rd.. Glenside. Pa. (Foote Mineral Co.) CLARK, Paul M. (S) Chattahoochee Brick Co. Chattahoochee. Ga. CLARK. Richard E. (MI) 4104 Dunhaven Rd.. Dallas, Texas (R. T. Vanderbilt Co.. Inc.) CLARK, Thaddeus J. E. (W) 113 Elmore Ave., Trenton 9, N. J. (Trenton Potteries Co.) CLARK. W. D.. Jr. (R) A. P. Green rire 3rick Co. Mexico. Mo. CLARKE. Ford K. (G) Philco Corp., Church Rd., Lansdale, Pa. CLARKE. James A. Bilston Foundries Ltd. Highfields, Bilston, Staffs, England CLAUS. Karl M. (W) Mosaic Tile Co.. Pershing Rd. Zanesville. Ohio CLAY. Wilfred (E) Kaiser Metal Products. Radcliffe St. Bristol. Pa. CLAYBURN CO, LTD. (R. M. Hnngerford) 850 W. Hastings St. Vancouver 9, 3. C, Canada Vol. 35, No. 10 (1956) CLAYCRAFT CO. (Phillip W. Tedt) Box 866, Coiumbus 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 25, D. C. CLEMENS, August, Jr. (M) 205 E. Gittings Ave., Baltimore 12, Md. (Arcrocs Corp.) CLEMENS. Eugene C. (SFI) Canneiton Sewer Pipe Co. Cannelton, led. CLEVELAND. George 3. (B) California Div. of Mines 217 W. First St. Los Angeies 12. Calif. CLEVELAND MUSEUM OF ART (William M. Milliken) Cleveland 6, Ohio CLEVELAND. Theodore K. (G) Philadelphia Quartz Co. of California Sixth & Grayson Sts. Berkeley 10, Calif. CLEVENGER, Thomas R. Massachusetts Institute of Tech. Rm. 20-C-001, Cambridge. Mass. CLEVER. William R. (G) 401 N. Elm St., Lincoln, 111. (Pittsburgh Plate Glass Co.) CLEVERLY, Robert B. (SI) 22120 Westwood Rd. Fairview Park 26, Ohio (Universal Sewer Pipe Corp.) CLEWS, Francis H. British Ceramic Research Assn. Mellor Laboratories, Shelton Stoke-on-Trent. England CLIFFORD, J. S. (W) Chicago Pottery Co. 1920 Clybourn Ave, Chicago 14. 111. CLINE. I. R. (S) Western Brick Co, Danville, 111. CLINE. Robert W. (WI) 377 Main St, East Aurora, N. Y. (Onondaga Pottery Co.) CLIPPER DIAMOND TOOL CO, INC. (Joseph Xiipperi 345 Hudson St. New York 14, N. Y. CLOSE, Barbara S. 36 Ler.px ?!,, Middletown, N. Y. CLOSE, Paul (G) Owens-Illinois Box 1035--6. Toledo. Ohio CLOUGH. Philip J. (R) National Research Corp. 70 Memorial Dr, Cambridge 42, Mass. CLOWES. E. J. (W) Clowes Ceramic Corp. 3711 Calhoun Ave. Chattanooga 7, Tens. CMOLIK. Clarence G. (B) 4403 Sheraton Dr, Parma 29, Ohio (Clevite Research Center) COATES, Bill (SF) Coates Co, Box 935, Austin 65, Texas COBLE. Robert L. (B) General Electric Research Lab. Box 1088, Schenectady, N. Y. CODE. Thomas E. (EJ) 921 E. Jefferson. Miamisbnrg, Ohio (Frigidaire Div, General Motors Corp.) COEN. Bernard (W) Woodbridge Sanitary Pottery Corp. 500 Green St, Woodbridge. N. J. COFFEEN. William W. (EFI) 1024 Boulevard. Westfield. N. J. (Metal & Thermit Corp.) COFFER. L. Wallace (B) Extractive Metallurgy Division Battelle Memorial Institute 505 Xing Ave., Columbus 1, Ohio COFFIN. Leon B. (W) Andover. N. Y. (Alfred University) COGEN. Saul (S) Davidson 3rick Co, 4701 Floral Dr. Los Angeies 22, Cali:. COCHILL. K. T. (X) 2023 Coilingswood Rd. Columbus 21, Ohio (Refractor-.es Div, Carborundum Co.) COHEN. Aaron (S) Box 405. Willamir.a, Ore. (Willamina Clay products) COHEN. .Alvin J. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 15, Pa. 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) IngTam-Richardson, Inc. Jefferson Rd, Frankfort, Ind. COLCORD. John E. (RJ) 1706 Sherman Ave. South Bend 16, Ind. (Bendix Aviation Corp.) COLE. David L. Box 611, Alfred, N. Y. COLE. G. Perey (G) Dominion Glass Co, Ltd. Box 190, Montreal. Quc, Canada COLE, Harold R. (R) National Carbon Co. Town St, Fostoria. Ohio COLE. Sandford S. (BFI) Titanium Division, National Lead Co. Research Dept, Box 53 South Amboy, N. J. COLE. Sandford S, Jr. (RI) Power Tube Div, Raytheon Mfg. Co. Waltham 54, Mass. COLEMAN, Bruce G. J 4 AP Scott Ltd. Box 209. Dunedin. New Zealand COLEMAN. Caru-Jeers A. (S) Big Run Ccal 4 C'.ay Co. 133 N. Limestone St, Lexington, Xy. COLEMAN. J. C. (G1 3746 Maoieway Dr, Toledo 14. Ohio (Kimble Glass Co.) COLEMAN, Robert L. (SI) 20631 Greenwood. O'ympia Fields. III. (Chicago Brick Co.) COLEMAN, Thomas B. (S) 635 Tarboro St, Rocky Mount, N. C. (Nash Brick Co, Inc.) COLLIER. Roger E. Gienwood Park Apts, Apt. 1 2605 Oak St, Chattanooga. Tenn. COLLINS. C. F. (G) Pittsburgh Plate Glass Co, Box 7S0 Henryetta. Okla. COLLINS. Paul F. (WI) Austenal. Inc. 7001 S. Chicago Ave, Chicago 37. 111. COLLINS. William G. (31) Johns-Manville Corp, Waukegan, 111. COLONIAL INSULATOR CO. (Frank Mason) 945 Grant St. Akron 11, Ohio COLOSXY, Benjamin P. School of Ceramics Rutgers University New Brunswick, N. J. COLUMBIA FIRE BRICK CO. (M. L. Hamaker) 612 First National Bank Bldg. Canton 2. Ohio COLUMBIA-SOUTHERN CHEMICAL CORP. (R. W. Miller) One Gateway Center, Pittsburgh 22, Pa. COMEFORO. J. E. (W) Frenchtown Porcelain Co. Frenchtown, N. J. Roster 19 COMER, Richard L. t W) 6161 Springdale Blvd. Grand 3Ianc. Mich. (AC Spark Plug Div. | General Motors Corp.l COMMERCIAL DECAL. INC. (Alfred Duhrsscn) 3ox "59 East Liverpool. Ohio COMMERCIALORES, INC. (Albert R. Eckel) Clover, S. C. 'OMMONS, Charles H.. Jr. (WFI) Forest Lane. R. R. 2, Malvern, ?a. (Foote Mineral Co.) COM PAG N L'CC I, Julius P. (W) Bay Ridge Specialty Co., Inc. Stolces Ave., Trenton 10, N. J. COMPANHIA PAULISTA DE MINERACAO (Eduardo C. Simonsen) Caixa Postal LOOS. Sao Paulo, Brazil CONARD, John B. (S) 600 Hawthorne Lane. Mansfield, Ohio (Richland Shale Brick Co.) CONDON. Edward L". (G) 6604 Waterman Ave., St. Louis 5, Mo. (Consultant) CONE. Carroll (G) 1387 Virginia Ave., Columbus 12. Ohio (E. I. du Pont de Nemours 3t Co.) CONLEY, James M. 363 N. Transit St., Lockport, N. Y. CONN, Willi- M. (G) 6312 Indiana Ave., Kansas City 30, Mo. (Consultant) ICONNELL, George A. (3) Pacific Coast Borax Co., Box 9I2S Station S, Los Angeles 5, Calif. CONNELLY. Daniel S. (R) 2801 N. Park Blvd. Cleveland Heights 18. Ohio (Ohio Crankshaft Co.) CONOVER. Ray C. (RI) Gladding, Mc3ean St Co. 1006 Alcalde Way, Glendale 7, Calif. CONRAD. Char!es_E.. Jr. (G) Libbey*Owens-cord Glass Co. Box 4273. Charleston a, W. Va. CONRAD, Keith (G) Owens-illinois Box 1019. Oakland 4, Calif. CONROE, Barden A. (G) 93 Gorton St., Corning. N. Y. (Coming Glass Works) CONSOLIDATED FELDSPAR DEPT. INTERNATIONAL MINERALS 4 CHEMICAL CORP. (William K. Burriss) 20 N. Wacker Dr.. Chicago 6. 111. CONSOLIDATED GLASS WORKS. LTD. (I. Donen) 3ox 562 Germiston. Transvaal, South Africa CONSUMERS GLASS CO.. LTD. (John N. Jordan) Box 456. Station B Montreal. Que.. Canada CONTARDI. William A. (WI) 206 Highland Ave., Metuchea. N. J. (Automatic Mfg. Co.) CONWAY. Myron J. (W) 943 Orchard St.. Zanesville, Ohio (Mosaic Tile Co.) COOK. A. W. Hargreaves Mill Ltd.. Botteslow St. Hanley, Stoke-on-Trent. England COOK. Eugene M. (G) S09 Bmadiawn Terrace. Vineland, N. J. (Kimble Glass Co.) COOK. Herman L. (EF) 1535 Beardsley Ave.. Muskegon. Mich. (Norge Div., Borg-Warner Corp.) COOK. Leslie J. (M) 1621 Reliez Valley Rd. Lafayette. Caiif. (Leslie Cook Laboratories) COOK. Louis S. 4085 Highland Dr. Salt Lake City 7. Utah COOK. Ralph L. (EFI) 204 Ceramics Bldg. University of Illinois, Urbana. III. Vol. 35, No. 10 (1956) COOK. W. Howard (R) Box 131, Norris. Term. (United States Bureau of Mines) COOKE. Charles C. (G) 2858 S. 109th Sc., Toledo II, Ohio (Owens-Illinois) COOKE. David C. (WI) 25 Chestnut St., Haddonneld, N. J. (Universal-Rundle Corp ) COOKE, Robert S. (E) Industrial Centre --S Quebec, Que., Canada (Crane Steelware, Ltd.) COOKE. William C. (G) Blue Ridge Glass Corp. Kingsport, Tenn. COOMBS. W. M. (G) Owens-Illinois Bridgeton Plant No. 14, Bridgeton, N. J. COOPER. Alfred R. (G) 45 Orchard St. Jamaica Plain. Mass. (Emhart 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 remview Ave. Cincinnati 13, Ohio COOPER. Walter W. (M) Dow Chemical Co. Inorganic Chemicals Sales Midland. Mich. COOPER. William G. (M) Box 204, Strongsville, Ohio (Ferro Corp.) COORS PORCELAIN CO. (H. W. Ryland) 600 Ninth St. Golden, Colo. COPE, William E. (M) Barclay Machine, Inc. Box 146. Sebring, Ohio COPELAND, R. Spencer C. W. T. Copeland St Sons Ltd. Spoae Works Stoke-on-Trent. England CORBAN. Wilbur H. (W) 3198 Dresden Rd.. Zanesville, Ohio (Ceramic Supply Co.) CORBMAX, Mitchell (S) New Jersey Shale 3rick i Tile Corp. Box 249, Somerville, N. J. CORSMAN. Morriss (S) New Jersey Shale Brick it Tile Corp. Box 249, Somerville, N. J. CORDES. John E. (WI) 5333 Humboldt Ave., S. Minneapolis 19, Minn. (Lithium Corp. of America. Inc.) CORHART REFRACTORIES CO.. INC. (Frederick S. Thompson) 1600 W. Lee St. Louisville 10, Ky. CORNING GLASS WORKS (Howard R. Lillie) Coming, N. Y. CORNISH. Frank L. (G) Coming Glass Works, Charleroi, Pa. CORNWELL. George L. (B) 171 Eiseman, Kenmore 17, N. Y. (Exolon Co.) CORRADA. Marco A. (G) Puerto Rico Glass Corp. Box 4272, San Jnan, Puerto Rico CORSON. Robert (GJ) 90 Cayuga St. Seneca Fails. N. Y. (Sylvania 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. Gemson. S. C. COTTON. Nigel Elijah Cotton ltd. Nelson Potter-/, Ha.niey Stoke-on-Trer.t. Stafford. England COUCH. Albert H. .RFI) Libbey-Owc.rs-Forc Glass Co. 1701 E. Broadway. Toledo 5. Ohio COUGHANOUR. 1. W. .3) 4094 Ben Lcmor.d Dr., Palo Alto. Caiif. (General Eieotrto Microwave Lab.) COULTER. William G. I.M) 4824 Meado'wisr.e N. 'A-.. Canton, Ohio ( Pemcn Cor?- COUNTS. William E. (3) 1422 W. Home Ave.. riint. Mien. (A C Spark Plug Div. General Motors Carp.) COURI, Richard A. (G) Box 109, South Woodstock, Conn. (American Optical Co.) COURT, G. Robert (E) 936 Hawthorne Ln., Kankakee, III. (A. O. Smith Corp.) COURTER. R. F. (M) Globar Div., Carborundum Co. Niagara Falls. N. Y. COURTNEY. Scorn J. (M) B. F. Drakenteld & Co. 45-47 Park ?'.., New York 7, N. Y. COUTANT. Edward R. (G) General Electric Co., 1235 Boston Ave. Bridgeport 2, Cor.n. COVAN. H. E. (M) R. R. 3, Box 10. 3ryan, Texas (Orton Foundation) COWAN. J. G. "Roselands," Billington Haughton. Start, England (Universal Grinding Wheel Co.) COWAN. R. Guy (DF) 416 Brooklea Dr., Fayetteville. N. Y. (Onondaga Pottery Co.) COWAN, Robert E. (3J) Westinghouse Atomic Power Div. Box 1468, Pittsburgh 30, Pa. COWELL. J. Robert. Jr. (G) Woodviile Lime Products Co. 2140 Jefferson Ave.. Toiedo 2. Ohio COWLES. Robert J. (W) Quality Components, ir.e. St. Marys, Pa. COWLES. Roderick J. (R) Waiworth Co.. ?00 E. First St. South 3os:or. IT. Mass. COWLING. Kenneth W. 79 Norwood Rd. Sheffield 5, England (Thos. Marshall 2c Co., Ltd.) COX. Edwin H. (E) 20111 Wickneld 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 & Co., Ltd. Wear Glass Works Sunderland. Dnrham. England COY. John Joel (E) 1689 Victoria Park Ave.. Apt. 410 Scarborough. Ont., Canada (Frigidaire products of Canada, Ltd.) CRAFT, R. S. (R) Findlay Gay Products Co. Washington. ?a. 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. Roster 21 IG. James '.V. (R?) Canadian Refractories, L:d. 5-JO Canada Ccmen: 3ld^. , Montreal 2, Que., Canada 1 ZRAIG. John D.. Jr. f U'j 14 Emerald Ln.. Lev.ttown, Pa. iViiro M:?. Co.) , raAAlER, W. E. (WFI) Industrial Ceramic Products, Ioc. 965 W. Fifth Ave., Columbus 3, Ohio .RANDALL. Eu^tne R. (RI) 253 Gulf St., Milford, Coon. (Mullite Refractories Co.) CR-^NDALL, James R. (El) 4514 Chestnut St., Betheada 14, Md. ! (National Bureau ot Standards) CRANDALL, William B. (RI) Box 707, Alfred, X. Y. (O.N.R. Research Project) .RANDOM. A. S. (G) American Window Glass Co. 20th Floor, Farmers 3ank Bldg. Pittsburgh 22, Pa. CRANE CO.. CHATTANOOGA DIV. (W. M. Hamilton) 33rd and Alton Park 31vd. Chattanooga 1, Term. 'RANE-PACIFIC CO. (Arthur E. Hoch) 330 W. Citrus 5c., Colton. Calif. GRAVEN, Henry E. (R) Davison Chemical Co. Div. o/ W. R. Grace & Co., Box 88S Lake Charles, La. CRAWFORD. George E. (WFI) 221 Sumner Ave., New Castle, Pa. (Universal-Rundle Corp.) .RAWFORD, George S. (M) University of British Columbia B. C. Research Council Vancouver 3. 3. C., Canada CRAWFORD. J. C.. Jr. (R) Johns-Manville Sales Corp. 22 E. 40th St.. New York 16, N. Y. CRAWFORD. J. L. (RF:' 3354 Foothill Rd. Santa 3arbara. Calif. CRESON, Waiter F. (R) Babcock 4 Wilcox Co. 1040 National City Bank Bldg. Cleveland 14, Ohio CRESS. William C. (SI) Carolina Ceramics, Inc. R.R. 3, Columbia, S. C. RESSY, llcrtcr. ; G) Em hart Manufacturing 333 Homestead Ave. Hartford 2. Conn. Co. CRIDER, Paul H. (El 1993 Butler Dr., Turtle Creek, Pa. (United States Steel Corp.) CRISPINO, Joseph C. (R) Coming Glass Works Corning, N. Y. 3. A. CRISTALERIAS DEL URUGUAY (Francisco J. Gercar) Comereio 1491 Montevideo, Uruguay CROCKETT. William E. (X) 1215 N. Arlington Ave. Indianapoiis. Ind. (Sales Engineer) -RONIN. Leo J. (R) Raytheon Manufacturing Co. Foundry Ave.. Waltham 54, Mass. SRONINGER. George J. (M) A. J. Wahl. Inc.. 8 Central Ave. Brocton, N. Y. CROOK. Charles Edmund (W) Los Angeles Chemical Co. 4545 Ardine St.. South Gate. Calif. ROOKSTON. James A. (RI) 1224 E. Jackson St.. Mexico, Mo. (A. P. Green Fire Brick Co.) CROO KSVTLLE CHINA CO. (Harry J. Bennett) Crooksville. Ohio GROOM. Henry C. fSJI) 393 Boulevard, Macon, Ga. (Burns Brick Co.) CROSBY. Donaiu P. ( Ri; Harbison-Waiker Refractories Fulton, Mo. CROSKEY. Carl D. iWj 203 'Rollingriale Rd. Catonsviile 3S. Md. I Insulator Dept. Co. General Electric Co.) CROSS. A. H. B. Brown-Firth Research Lab. Princess St., Shetfteld 4( York. England CROSS. Charles D. i.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. Crowlev St Co., Inc.) CROWLEY, Michael S. (I) Pennsylvania State University Dept, of Geophysics & Geochemistry 223 Mineral 5ci. 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. f3) Morning Glory Rd.. Bound Brook, N. J. (Johns-Manville Corp.) CUMMINS. Robert K. (Gj General Electric Co., 1133 E. 152nd 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 Gay Products Co.. Box 226 Martinsville. Ind. CUNNINGHAM. Robert J. (G) Gark Ave.. R.R. 5. Newark. Ohio (Owens-Coming Fibergias Corp.) CUPIDRO. Vincent N. (W) 2204 Kirchoff Rd. Arlington Heights. III. (Radio Materials Corp.) CURCIO. Anthony L. (WI) 21 Church St., Bound 3rook. N. 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. (Ferro Corp.) /ol. 35, No. 10 (1956) CURTIS. V. .ilium H.. Jr. (.IEJ) 1424 Mor.te Sar.o Ave., Augusta. Ga. (U. S. Army) CURTS. R. M. (G) America.-. Potash 4 Chemical Corp. 99 Park Ave . New York, N. Y. CUSiCK. Charles S. t'G) Pittsburgh Plate Glass Co. Wks. --, Ford Cirv, ?a. CUTHILL. John R. (E) Enameled Metals Section National Bureau of Standards Washington 23, D. C. CUTLER. Ivan 3. (3) 220 Mines 31dg., University of Utah Salt Lake Clo" 12, Utah CZAR.NECKI. Kamil 3. 29, Whitehall London S. W. 1, England (Aglite. Ltd.) CZECHOSLOVAK CERAMIC AND GLASS SOCIETY (R. Barta) Techr.icka ul.c.5 Praha XIX, Chechoslovakia D D'ADRIAN. Vincent L. D. (G) Mississippi Vailey Research Lao., Inc. 901 S. 13th St., St. Louis 3, Mo. DAGER. Probert W. (MFI) 5628 Greenoush. 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. Robert H. (G) 234 Delevan Ave., Coming, N. Y. (Coming Glass Works) DAMERON. Joseph J. (S) Coates Co., Box 935. Austin. Texas DANIELSON. R. R. tEFI) 120 Richmond Terrace, Rahway, N. J. (Metal 4 Thermit Corp.) DANK. Miiton (G) Owens-Illinois, General Research Div. Toledo 1. Ohio DANKS, Wiiliam H. (G) 215 Mississippi .Ave.. Crystal City, Mo. (Pittsburgh Plate Glass Co.) DARBY. George M. CM) 61 Washington Ave., Westport. Conn. (Dorr-Otiver, Inc.) DARLING. D. G. IS) Toronto 3rick Co., Ltd. 425 Bayview Ave. Toronto 17, Ont., Canada DARNELL, Hannon C. (S) Murray Tile Co., Inc.. Goverport, Ky. DARRAH, W. A. fE) 901 N. Oak Park 3lvd., Oak Park, III. (Continental Industrial Engineers, Inc.) DAS GUPTA. A. K. (W) Allen-3raaley Co. 136 W. Greenrieid Ave. Milwaukee 4, Wise. D.AUMKE. Arthur H. (W) 17 W. 170 Hillside Ln.. Hinsdale. III. (Harshaw Chemical Co.) DAUWALTER. A. C. (S) W. S. Dickey Clay Mfg. Co. 607 Commerce Trust Bldg. Kansas City 6, Mo. DAVENPORT. Warren H. (R) 53 Paine St., Worcester 5. Mass. (Norton Co.) DAVEY. Earl R. (W) Canadian Ohio 3 rasa Co.. Ltd. Niagara Falls. Ont.. Canada DAVEY. Frederick K. (B) Carborundum Co. Niagara Fails. N. Y. DAVIDSON. Robert W. (R) North American Refractories Co. Curwensville. Pa. Roster 23 DAViES, Ches:er A. (WI) Park Lake Ave., Titusville, N. J. (American Radiator 5: !Standard Sar.itar*/ Carp.) DAViES. Edward G. (G) Dominion Glass Co .-Ltd. Wallaccburg. Ont., Canada DAVIES. Thomas H. ;G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13, Pa. DAVIS. Earl X. (G) Bausch Sc Lomb Optical Co. Rochester, N. Y. DAVIS FIRE 3RICX CO. I Oak Hill, Ohio ! DAVIS. Harry E. (WFI) ! Universal Potteries, Inc.| Cambridge. Ohio i DAVIS, II. M. (E) ; Pennsylvania State University Mineral Industries Bldg. University Park. Pa. DAVIS, James K. (G) 144 High Rd.. Corning. X. Y. (Corning Glass Works1 DAVIS. John A.. Sr. (W) : . Sentry Sanitary Corp. . Box -O". Manning-ton, \V. Va. ! DAVIS. N. 3. <M) j 77 Metcalfe St.. Rm. 305 ; Ottawa 4. Ont., Canada (Canadian Flint 3c Spar Dept.) |DAVIS. Sam H.. Jr. ('.V) 808 X. Howard, Robinson, 111. (Case Mfg. Corp.) DAVIS. William A. (G) 1421 Second St. M. R.t Tarentum, Pa. (Pittsburgh Plate Glass Co.) DAY. Arthur L. (Honorary. G) | 911J Old Georgetown Rd. ; Berhesda 14, Md. iDAY, Britton T. (R) *: j American Fire Clay 3: Products Co. I 3ox 157. Canneid, Ohio ; DAY. Char:es M. ,R) Valley Dolomite Corp. Room 902. ?15 Olive St. Sr. Louis l. Mo. DAY, Deiber: E. 1003 Park St.. Roiia. Mo. DAY. Frank. Jr. (Ml Coming Glass Works. Coming, X. Y. DAY. Jack F. W i i Jl United States Ceramic Tile Co. Fourth & Walnut X. E.. Canton. Ohio DAY. Loren L. (GJ) 2401 X. Mesa. Aot. 4, E! Paso, Texas ( Pittsburgh Plate Glass Co.) DAY. Ralph X. (CPI) I.ihhey-0wens-Ford Glass Co. 1701 E. 3roadway, Toledo 5, Ohio DAY. Robert 3. (SI) 13 Lynnwood Dr.. R. R. 3. Morris. III. (Morris Clay Products Co.) 3EADERICX. James W. (B) 1011 Norvell Dr. Signal Mountain, Ter.n. (American Lava Corp.) i DEADWYLER. Earnest W. (RI) 2S99 Glenmawr Ave. Columbus 2. Ohio (United States Army) >EAX. Estus R. (BJ) 1416 Tabor Ave.. Dayton 10. Ohio (Xational Cash Register Co.) >EAR. Paul S. (BFI) I Virginia Polytechnic Institute Itox 205. Blacksburg, Va. >E HECK. Hubert O. (M) l 5105 Belmont. Apt. 3. Houston 5, Texas (Baroia Div.. Xational Lead Co.) )ECEXHAM. W. S. (RFI) United States Steel Corp. > 525 William Penn PI. Pittsburgh 50, Pa. ECKER. Alfred R. (W) 811 X. Seventh St.. Cambridge, Ohio (Champion Spark Plug Co.) [ml. *M, No. 10 (lOoo) DECKER. Edgar A. (M) G. S. Robins Co. 126 Chouteau, St. Louis 2. Mo. DECKER. Edward L. _W.i Summer St.. Wiiliamstown, Mass. (Sprague Electric Corp.) DE COURSEY, Donald T. (E) 57 Prospect Park South Wes: Brooklyn 15, X. Y. DEETK. H. R. (M.) American Xepneiine Ltd. 25 King St. W., Rm. 2550 Toronto. Ont.. Canada de FELICE, Ralph (D; 28 Shore Cliff PI. Great Xeck. L. I., X. Y. (Abels. Wasserberg 3c Co.) DEIGXAX. 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 (Wi Delco Radio Div. General Motors Corp. Kokomo, Ind. DELAWARE CLAY CO. (Homer V/. Wilson j Box 352 Delaware. Ohio de LEEUW, Peter Eisenberg Sc Co.. Inc. Centra) Post Office Box 323 Tokvo. Japan DELGADO. Cyril B. (G) The Class Industry 55 W. 42nd St.. New York 36, X. Y. DeLOXG. Hermon W,, III (G) 67 Main Sr., Dansviile. N. Y. (Department of Public Works) DEMAISOX. R. J. (R) Quigiev Co.. Inc.. 415 Madison Ave. Xew York 17, X. Y. DeMARIA. Vincent C. (Gi S.ivania Electric x'rocucts, Inc. Box 6, Bayside. X. Y. DEMUTH GLASS WORKS. INC. ( George F. Young) Sox 629 Parkersburg, W. Va. N DENISON ENGINEERING CO., THE (W. C. Denison 1 1160 Dublin Rd. Columbus 16. Ohio DENISON. George W. (Sr) Ohio Clay Co.. Box 1776 Cleveland 5. Ohio DENISON. John C., Jr. (G) John C. Denison & 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 Sc Tile Co.. Inc. Box 53. Great Bend, Xans. de PABLO. Liberto Ohio State L'niversity Lord Hall. Rm. 113 Columbus 10. Ohio Dk PIOLEXC. Gerard (X) Saint Gobain. Inc. 500 Fifth Ave.. New York 36, N. Y. dePROSSE. Victor A. (El) 2164 Arthur Ave.. Lakewood 7, Ohio (Ferro Corp.) DeREMER. John W. (RI) 501 Arizona Dr.. New Kensington. Pa. (American Window Glass Co.) DERGE. Gerhard (X) Carnegie Institute of Technology Pittsburgh 13. Pa. DERINGER. W. A. (EFI) A. O. Smith Corp. 3533 N. 27th St.. Milwaukee 1. Wise. deROUX. Juan Ramon (I) Box I486, Panama. Rep. of Panama ( Panama Clay Products Co.. Inc.) DERR, Robert H. <W) Cer:a;n-Teed Products Corp. 204 Park ?!.. Pittsburgh 9, Pa. D e r S A R X i S SIA X, Michael Gasper:. X. Y. DESAIX, Herbert A. (SI) 122 Jefferson Park Dr. Huntington, W. Va. (Barboursviile Clay Mfg. Co.) DESEXXE. Claude M. (S) Cote ce I'Egiise Boischatei. Co. Montmorency, Que., Canada (Citadel 3rick Ltd.) DE3MARQL'EST, Louis Institut de Ceramique Francaise 6 Graadc-Rue Sevres (S. & O.), France DETAMORE, Walter A. (S) Barium Reduction Corp. South Charleston 3, W. Va. DEURVORST, F. B. M. He: Zonnehuis, Terborg, Holland (Koninklijke Fabrieken Diepeebrock Sc Reigers X. V'.) DEUTSCHE GLASTECHNISCHE GESELLSCHAFT Unterciainkai 12 Frankfurt A. M., Germanv DEUTSCHE XERAMISCHE GESELLSCHAFT Reuterscrasse 235 Bonn/Rhein, Germany DEUTSCHER, Jerome S. (SI) R.R. 1, Box 933. 4199 Temescal Ave. Norco, Calif. (Maybow. Inc.) DeVILBISS CO. (E. F. Frey) Toledo l, Ohio de VILLE. Rairh W. (I) Harvard University Graduate School of Business Soldiers Field, Boston 63, Mass. DEVLIN. James F. (EJI) 1523 E. 3Jrd St.. Baltimore !3. Md. iPemco Corp.) DeVOE. Charles F. (G) 38 W. Fourth St., Coming,. N. Y. (Coming Glass Works) DeVRIES. Robert C. (3) 2012 Hudson S:.. Schenectady. X. Y. (General Electric Cc.) DEW. Robert J.. Jr. (3) Ceram-Chem. Research Lab. Universitv of Tampa, Tampa. Fla. DEWEY, 3. F. (W) 42 Summit S:., LcRoy, X. Y. (Lapp Insulator 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-Coming Fibergias Corp.) DEXHEIMER, E. C. (E) 917 Country Club Drive St. Louis 21. Mo. DEYO. R. Daniel (R) 104 Dogwood. Park Forest, 111. (United States Steel Corp.) DIAMOND ALKALI CO. (L. T. Welsbans) Cement-Coke Div. 300 Union Commerce Bldg. Geveland 14, Ohio DIAMOND, Grant S. (RFI) Electro Refractories & Abrasives Coro. 344 Delaware Ave.. Buffalo 2, N. Y. DIAMOND. Jacob J. (B) National Bureau of Standards Conn. Ave. Sc Van Ness St., N. W. Washington 25, D. C. DIAZ, Jose J. (I) Fabrica Nacional de Loza de Penco S. A. Box 13. Penco, Chile di BENEDETTO. Bernard Box 847. Alfred. X. Y. DICK. Clarence H. (G) 1013 Gordon St.. Natrona Heights. Pa. (Pittsburgh Plate Glass Co.) Roster 25 TICK. William O., Jr. 37 Mcacow Brook Apts. , Corning, N. V. prCKAS, Charles H. (E) ' 132a Sur.se: Rd., Chattanooga, Term. (Samuel Stamping 3t Enameiing Co.) DICKENS, H. A. Nilser. Porcelains (Aus:.) Pry. Ltd. 221 Separation St. Norrhcote. Victoria, Australia TICKET. Herbert R. (S) 26 Regent St._ St. Thomas, Ont.. Canada (Canada Vitrified Products. Ltd.) TICKET. John M.. Jr. (SI) Hanlev Co., Summerville. Pa. TIETERT. Harry W. (3) Harry W. Dieter: Co. 1214 Virginia Dr.. Kerrviile. Texas TIETRICH, Waldemar F. (3) 1209 Potomac St.. N. W. Washington 7, D. C. (United States 3ureau of Mines) TIETTERLE, Edwin W. (WI) 3834 Monteith Dr. Los Angeles 43, CaJit. (Ferro Carp.) TIETZ, Earl D. 583 Hess Rd.. Coiumbus 10, Ohio DIETZEL. Adolf Max-Plar.ck-Institut fur Silikatfo.-schung, Wurzburg. Germany Neunerplatz 2 TiLAZZARO. John F. 4015 34th S.. Seattle 3, Wash. DILLARD. William F., Jr. (S) 2125 E. Side Court, Augusta, Ga. (Merry Eros. Brick it Tile Co.) DILLENDER, Richard D.. Jr. (W) 8 Sunnybrook Trail Signal Mountain, Tenn. (American Lava Carp.) OILLIARD. Paul D. (GI) 1313 E. Wheeling St.. Lancaster, Ohio (Anchor HocKir.g Glass Carp.) DILLINGHAM. Robert ?. (W) 2207 Cheyenne St.. Golden. Colo. (Coors Porcelain Ca.) DILLON. C. L. (G) Latchtord Marble Glass Ca. Box 71707. Los Angeies I, Caiif. DILLON. Zaie (W'i 56 Riverlawr. Dr.. Fair Haven. X. J. (Atlantic Tiie Mtg. Co.) DINGLEDIXE. H. F. (S) National Sewer Pipe Ltd. 330 Wer.tworth St.. N. Hamilton. Ont.. Canada DINGLER. Edward L.. Jr. (R) Carborundum Co., Refractories Div. Niagara Fails. X'. Y. DINGWALL. Andrew (G) 588 Grove St., Upper Montclair, N. J. (Consulting Scientist) DINGWALL. Andrew G. F. (G) 588 Grove St.. Upper Montclair. N. J. (RCA Victor) DIPPELL. L. V. (R) 1407 Cherry Lawn Ave. R. R. 3. Owosso. Mich. (Mid-West Abrasive Co.) DIRKSEN. A. J. (G) American Potash 3t Chemical Corp. 99 Park Ave.. New York 16. N. Y. DIRLAM. Arthur C. (G) 208 X. Talley Ave.. Muncie. Ind. (Ball Bros. Co.. Inc.) DISTILLATOR. Philip R. (W) Jackson Vitrified China Co. 2 West St., Peibam Manor 65, N. Y. DITHRIDGE. Edward H. <E) Richmond Radiator Co., Monaca, Pa. DIXON. .Anna Lane (D) 815 .V. Fourth St.. Burlington, Iowa DIXON. Gene (R) Kyanite Mining Corp., Cullen. Va. DIXON, JOSEPH. CRUCIBLE CO. (W. R. WyekotT) 167 Wayne St. Jersey City 3. N. J. Vol. 35. No. 10 (1950) DJAJOES. S. Klitren Kiuul GK 6/293 Jogjakarta. Java, Indonesia DLUCOZIMA. W. R. (WI) R. R. 19, South View Dr. East Liverpool. Ohio (Patterson Foundry i Machine Co.) DODD. Charles M. (Sri) Dept, of Ceramic Engineering Iowa State College. Ames. Iowa DODGE. Alfred W. (G) Hazel-Atlas Glass Co., 126 Market St. Zanesville, Ohio DOERSELN. Kenneth ?. (M) Silk City Tool 3c Machine 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 LIME 4 STONE CO.. INC. (V. V. Kelsey) Piney River, Va. DONAHEY, John W. (GI) Box 191, Paoli, Pa. (Foote Mineral Co.) DONEN, I. Consolidated Glass Works Ltd. Box 562, Germiston 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 DONNENWIRTH. A. L. fRI) Caroorundum Go.. Falconer, N. Y. DORA. Joseph C. (E) 3246 West 62nd PL, Chicago, 111. (Crane Co.) DORAN, Robert F. (GI) Sylvania Electric Products. Inc. Cottage PL, Mineoia, N. Y. DORF, Arthur L. 331 W. College Ave., State College, pa. DORN. .Vvah J. (G) 4 Oakwood Dr., Box 152 Corning. N. Y. (Coming Glass Works) DORN, G. Neal (SI) 1015 Kemp Ave., Ironton. Ohio (Carlyle Tile Co.) DORSETT. 0. A. (W) Knox Porcelain Corp., Knoxville, Tenn. DORSEY. Baird L. (R) 300 Walnut Rd.. Pittsburgh 2. Pa. (Jones 4 Laughlin Steel Corp.) DORSEY, John J. (WI) P. R. Mallory & Co., Inc. 3029 E. Washington St. Indianapolis 6, Ind. DOTY, Henry S. (R) Commercialores, Inc. 39 Cortlandt St., New York 7, N. Y. DOUGHERTY. Leon A. (W) 370 North St.. Sun Prairie. Wise. (Wisconsin Porcelain Co.) DOUGHERTY. Robert W.!(S) 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 ci Glass Technology "Thornton," Hallam Gate Rd Shcnield 10. England DOWLING. RnOert F. (G) American Optical Co. Southbridge. Mass DOWNS, Charles D. (W) Columbian Carbon Co. Mapico Color Div. 601 Cass St.. Trenton 10, N. J. DRAKE, M. Ellis (D) Alfred L'niversity, Alfred. N. Y. DRAKENFELD. 3. F. <4 CO. (Scott J. Courtney) 45--47 Park PL New York 7, N. Y. DRAKER, Harry C. (M) 38600 Courtland Dr., Willoughby, Ohio (Harshaw Chemical Co.) DRAMMENS GLASSVERK (Ragnar Tanberg) Draramen. Norway DRAPER, Perry E. (W) Maosfieid Sanitary Pottery, Inc. Perrysville, Ohio DRECHSEL. Helmut E. (G) Smith Kline 3t French Labs. 1550 Spring Garden St. Philadelnhia 1, Pa. DRESSLER. Philip (MFD Swindell-Dressier Corp., Box 1888 Pittsburgh 50. Pa. DREYLING. Lewis J. (R) 229 Miiltowr. Rd., Milltown, N. J. (Quigley Co.. Inc.) DROUHARD. W. J. (WI) Mansfield Sanitary Pottery, Inc. Perrysviile. Ohio DRUCKER. Juiius Farbenfabriken Bayer Aktiengesellschatt, 7-9, Rheinuferstr. Krefeid-Ucrdingcn. Germany DRUMMOND. Charies H. (G) 1639 Cass Rd.. Maumee, Ohio (Owens-Illinois) DRUMMOND. V. W. Z) 214 Crim St.. 3owiing Green. Ohio (Libbey-Owens-Ford Glass Co.) DU3ER, William Box 1313. Georgia Tech., Atlanta. Ga DU3LER. Robert H. (W) Crane-Pacific Co. 330 W. Citrus St.. Colton. Calif. DuBOIS. H. 3. (MFI) Golding-Keene Co. 1401 New York Ave., Trenton, N. I. DUCKWORTH. Winston (3FI) Battelle Memorial Institute 505 King Ave., Columbus 1. Ohio DUDDING. 3. ?. 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.) DUECKER. Herman C. (G) 23927 Emerson Way, Inkster. Mich. (Ford Motor 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 Cay Products Co. Lock Drawer 32. Uhrichsville. Ohio DU FRESNE. Robert S. (R) 3125 Fairmount. La Crescenra. Calif. (Gladding, McBean 4 Co.) DUGAN, Robert T. Box 1844, Midland. Texas Roster 27 di'gga.w ;. to, Waish Refractories Corp. 101 Ferrv Sr., S:. Louis 7. Mo. f DUHRSSEN. Alfred ( D' , | Commercial Decal. Inc. Box 7:9. East Liverpool, Ohio ! DUKE, John J. (W) I 3ox 33. Saxonburg. Pa. (Du-Co Ceramics Co.) , DUL3ERC. Irving (R) | 25-i X. Allegheny St., Beilefonte, Pa. i (J. H. France Refractories Co.) i DC LIN, Francis H. 7728 Westmoreland Dr., Sarasota, Fla. DUX3ECX, Norman J. (R) i International Minerals & Chemical Corp. i 20 N. Wacker Dr., Chicago 6, 111. DUNCAN, J. Earle (G) Pittsburgh Plate Glass Co. Research Lao.. Creighton, Pa. DUNCAN. Russel! F. (B) 209 Franklin Dr., 3erea, Ohio (Ferro Corp.) DUNCOMBE, George H., Jr. (SF) 150 E. Frambes Avc., Columbus l. Ohio (Evans 3rick Co.) DUNCAN. Robert H. (BI) 6850 Meauowbrook Manor St. Louis Park. Minn. (Minneapolis-Honeywell Reg. Co.) DUNN. H. E. (M> Suite 206, 300 Mt. Lebanon Blvd. Pittsburgh 34, Pa. (Vanadium Corp. of America) DUNN. John P. (G) Corning Glass Works, Corning. N. Y. DUNN. Peter E. (G) Rauiand Corp., 4245 N. Knox Ave. Chicago 41, III. DUNNICAN. Ward G. (G) 277 E. Seventh St.. Clifton. N. J. (Sector.. Dickinson 4r Co ) DUPLIN, v. j.. ;r. v 3 Fi > 300 North Ave.. Fanwood, N. J. (Babcock 5c Wiicox Co.) du PONT. E. I.. de NEMOURS 4 CO.. INC. (John M. Olsen) EIectrcchemicals Dept. Wilmington 98. Del. DURHAM. Carl 7. < E'i 74j Windsor Ave.. S. W. Roanoke. Va. General Electric Co.) DURST. William A. (M) 209 Madison St.. St. Marys. Pa. (Stackpole Carbon Co.) DUWEZ. Poi (3) California Inst, of Technology Pasadena. Calif. DYNES. Marvin W. (G) Van Dyne Quartz Works Box 148. St. Charles, III. DYRE. Warren T. (E) 317 Estaugn Ave.. Hadtlonrieid. N. J. fUniversai-Runule Corp.) DZURA. Edward J. (B) American Optical Co. Research Center Southbridge. Mass. E EAGLE. J. Eugene (MFI) 3202 McShane Way, Baltimore 22. Md. (Pemco Corp.) EAGLE-PICHER CO. <D. R. Carter) American 31dg., Cincinnati 1, Ohio EARHART. William H. (G) RCA Victor. Engineering Dept. S. Adams St., Marion. Ind. EARL. Fred C. Box 84, 3roadalbtn. N. Y. EARL. J. Alfred (B) 1621 S. El Molino St. Alhambra. Calif. (Consolidated Electrodynamics Corp.) Vol. No. 10 (lOofil EASTER. George J. ( R F i) Electro Refractories 4 Abrasives Corp. Willett Rti.. Bunaio 19. N. Y. EBERSOLE, Rcbert A. (R) Chisholm. Bovti , White Co. 610 W. 57th St.. Chicago 21. 111. ECKEL. Albert R. (Ri Commercialores. inc.r Clover, S. C. ECKEL, Harold A. Trinidad Clay Products. Ltd. 44, South Quav, Port of Spain Trinidad. B. W. I. ECKLEY, J. R. (R) Aluminum Co. of America 1501 Alcoa 3ldg.. Pittsburgh 19, Pa. ECONOMOS. George (W) Massachusetts institute of Technology 77 Massachusetts Ave., Rm. 2QC-001 Cambridge 39. Mass. EDGAR. Albert C. (M) Edgar Plastic Kaolin Co., Edgar, Fla. EDGAR, Clement B. (R) M. H. Derrick Co.. 1620 Oliver 3ldg. Pittsburgh 22. Pa. EDGAR PLASTIC KAOLIN CO. (Albert C. Edgar) Edgar. Fla. EDLIN, 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. Murniv Hill. N. J. EHLERS. Ernest G. (B) Ohio State University Dept, of Mineralogy. Columbus. Ohio EHLERS. G. Milton (W) Aerovox Corp.. 742 Belleville Ave. New 3edford. Mass. EHMAX. Roy G. (GFi) 32J E. Hamilton Ave. State College. Pa. (Pennsylvania State LTniversity) EHRLICH.'Raphael H. (S) 4039 N. Central Expressway Dallas 4. Texas (Crown Brio:: Mfg. Co.) F.ICH3AUM. 3arlane R. E. Bend Park. 8 May Court Red Oaks Miil. Poughkeepsie. N. Y. EIDE. Alwrin C. (E) American Zinc Saics Co.. Box 327 Cnlumhus 16. Ohio EISEX. John 3. (R) Box 27. Waterloo. Wise. (Rav-O-Vac Co.) F.ISENBERG. Marvin (FA Montaine Corp. 2446 S. Prairie Ave.. Chicago 16, Til. F.ISENBERG. Meyer (W) 64 Chester Circle New Brunswick. N\ J. (Architectural Tiling Co.. Inc.) ETSS. Roger L. Box 827. Alfred. N. Y. EITEL. Wilhelm (BI) Dir. of Inst, of Silicate Research University of Toledo. Toledo 6. Ohio EKDAHL. W. Graydon (G) Johns-Manville Research Center Manville. N. J. EKEDAHL. J. Charles (R) 1113 N. Raynor Ave.. Joliet. III. (Illinois Gay Products Co.) ELDER. J. C. (WI) Robertson Mfg. Co.. Box 848 Trenton 5. N. J. ELECTRIC AUTO-LITE CO.. SPARK PLUG DIV. (Robert Twells) Box 231. Fostoria. Ohio ELECTRO REFRACTORIES 4 ABRASIVES CORP. (Grant S. Diamond) 344 Delaware Ave.. Buffalo 2. N. Y. ELJER CO.. Enamei-Ware Div. (L. A. Bateman) Salem, Ohio ELLARD. Earle R. (RI) 344 Clinton Ave., Tinn, Ohio ( Sasic. Inc.) ELLEFSON. B. S. (G) Syivania Electric Products, Inc. 1740 3roadwav. New York 19, N. Y. ELLINGSWORTH. Martin K. 5320 Midwood Ave.. Baitimore 12. Md. ELLIOTT. Amos W. (3) Covered Wagon Ranch Cloverdale. Caiif. ELLIOTT, C. Franklin 3301 Pincwood Ave., Apt 41 Chattanooga, Tenn. ELLIOTT, George 3 Hillpark Gardens Edinburgh 4, Scotland (National 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. Alracena. Calif. (Gladding, McBean 4 Co.) ELMER. Jack T. (X) ;8'0 Woodland Ave. Santa Clara. Calif. ELMER. Thomas H. (B) 219 E. High St., Painred Post, N. Y. (Corning Glass Works) ELOSL'A. Bernardo (W) Lad ri Hera Monterrey, S. A. Box 360, Monterrey, N. L., Mexico ELSTON, Keith (WI) 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) Arm strong Cork Co. Research 4c Development Center Lancaster. Pa. EM HART MANUFACTURING CO. (W. H. Snorter) 333 Homestead Ave. Hartford 2. Conn. EMHISER. Donald (R) 1105 Eighth Ave., 3raekcnridge, Pa. (Pittsburgh Plate Glass Co.) EMISDN. M. Hershel (G) Coming Glass Works Charleroi Div., Charieroi, Pa. EM LEY. William 5. (W) W. Maitland Lane. R. R. 3 New Castle. Pa. (Shenango China. Inc.) EMMERICH. Liberata (G) Pennsylvania State University Mineral Industries Library University Park. Pa. EMRICH. Allen H. 1759 Franklin Ave.. Columbus 5, Ohio EMRICH. Barry R. (RJI) 501 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. (SD 1560 S. Krameria. Denver, Colo. I Denver Brick 4 Pipe Co.) ENBERG. Christer Tegellaboratoriet (Brick Laboratory) Drottning Kristinas vag 45 Stockholm 0. Sweden ENGLERT. William J. (G) 304 Vernon St.. New Kensington. Pa. (Pittsburgh Plate Glass Co.) ENGLISH CHINA CLAYS SALES CORP. 551 Fifth Ave.. New York 17. N. Y. ENHUS. Hans Gosta Aktiebolaget Malardalens Tegelbruk Ericsbergsgatan 27 Stockholm 3. Sweden Roster 29 ENLOE, Scroop W. i,M ) Dillsboro. N. C. (Karris Cay Co.; ENLOE. Scroop W.. Jr. I M) Karris Clay Co.. Spruce Pine. X. C. ENOCH. Charles R. (Ri 320 Spring Ln.. Bridgero'-'*. Pa. i Refractory Specialty Co.) ENOS. V.\ Kenneth 607 Rutledge Ave.. Charleston. S. C. EPSTEIN*. Eduard. Jr. (R) Laclede-Christy Co. Div. H."X. Porter Co. 4705 Ridgewood Ave., St. Louis. Mo. ERARD. Edward (G) Vidrio Neutro, S. A. Prolongacion Caile de la Rosa No. 9, Arzcapotzaico. D. F., Mexico ERICKSON. A. Alfreti (G) 84 Pershing St.. Corning, N. Y. (Coming Glass Works) ERICKSON. Allen J. (G) 4259 E. 7aih St.. Seattle 15, Wash. (Northwestern Glass Co.) ERIE RESISTOR CORP. (3obby L. Joym r) 644 W. 12th St.. Erie, Pa. ERNST. Walter S. (M) 2723 E. Filth Ave., Knoxville. Term. (Volunteer Portland Cement Co.) ERSLEY, Emmett J. (GJ) R. R. 1. Box 352*B 2a585 Wayman St.. Newhall. Calif. (Thatcher Glass Mfg. Co.) ERVIN. Guy. Jr. (B) Research Laboratory, Norton Co Worcester, Mass. ERWIN. Lee R. (G> 419 Toctno. Duarte. Calif. (Carrier Corp.) ERZEN. Frank C. (E) 751 S. Greenocrry Dr. West Covina, Calif. (Bulwark Coro, of .America) ESCKENSURG. Reiser: L.. II F!oreville. Texas ESSELSTYX. Willard A. c/o American Embassy New Delhi (Maii Room) Department of State Washington 25, D. C. ESTES. Joseph F. (W> Haegrr rjtrerics. Inc. 7 Maiden Lane. Dundee. III. ETHEREDGE. Otis X. (M) Box 252. Gordon, Ga. (Southern Clays. Inc.) ETRIS. Samuei F. (R) !00 W. Nippon St. Philadelphia 19. Pa. (American Society for Testing Materials) EUBANK. William R. (B) 2301 Hudson Rd., St. Paul 6, Minn. (Minnesota Mining & Mfg. Co.) EUBANKS. Alfred G. (E) 10802 Stella Court. Kensington, Md. (National Bureau of Standards) EUSNER. George R. (R) 1025 Summitt St.. McKeesport, Pa. (United States Steel Corp.) EVANS. Charles E. (M) 2401 Northgien Dr. Columbus 24, Ohio (Titanium Alloy Mfg. Div. National Lead Co.) EVANS. Daniel Owen (G) Hillcrest & Linden Ave.. Mapleview Charleroi. Pa. (Coming Glass Works) EVANS. Edward J. Welsh Tinplate St Metal Stamping Co. I.td.. Box 14 Llanelly, Carmarthenshire, England EVANS LEAD CORP. (Fred Leake. Jr.) Box 1467. Charleston 25. W. V.n. EVANS PIPE CO. (T. J. Evans. Ill) Uhnchsville, Ohio EVANS. Ricnaru F. ^ W ) Iroquois China Co. 2320 Milton Ave.. S\racusc 9, N. Y. EVANS. Roas M. (.5) 604 . Mechanic St.. 3razil. Ind. (Arketex Ceramic Corp.) EVANS, T. J.. Ill (S; Evans Pipe Co.. Uhrichsviilc, Ohio EVANS, W. Gordon Geo. L. Ashworth & 3ros. L:c. Broad Street Works Hanley. Stoke-on-Trent. England EVANS. William W. (SI) 506 E. Iron Ave.. Dover, Ohio (Robinson Clay Product Co.) EVERHART. J. O. (SFI) Engineering Experiment Station Ohio State University Columbus 10, Ohio EWALD. Merwin R. (M) Box 19A, R. R. 1, Mondova, Ohio (Surface Combustion Corp.) EWING, Robert F. (WI) Mansfield Sanitary Pottery Perrvjville. Ohio . EXOLON CO. (Harvey J. Robiilard) 1000 E. Niagara St.. Tonawanda, N. Y. EYERLY. George B. (S; Malvern Brick & Tile Co.. Box 415 Malvern. Ark. F FABER, William M. 404 W. White, Champaign, III. FAB IAN IC. W. L. (RFI) Laclede-Christy Co. Div. H. K. Porter Co. 4705 Ridgewood Ave. St. Louis 16. Mo. FABRICA de LADRILLOS INDUSTRIALES. y REFRACTA RIOS, S. A. (Salvador Odriotola Gomez) Ap.*rtado 590. Mor.terrev, N. L.. Mexico FABRICA de PORCELANA da VISTA ALEGRE. LDA. Cabinete a Lab. Central de Estudos Candal. Vila Nova de Gaia. Portugal FACKLER. Ernst G. Apartaco Aereo 6108 Bogota. Colombia (Vidrio S. A.) FACXT. George ?. ''SF) 4C2 Paseo de: Mar. Box 378 Palos Verdes Estates. Calif. (Redondo Tile Co.. Ltd.) FADANELLI. Louis H. 1152 S. California Ave.. Chicago. III. FAGG. Leo W. (E) Johnson-Fagg Engineering Co. Box 7157, Tuisa. Okla. FAHREN3RUCK. William O. (RI) R.R. 1. 3ox 95. Tiffin. Ohio (Sterling Grinding Wheel Co.) FAILMEZGER. Howard (WFI) 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 Smith) Fairfacts St.. Trenton 8, N. J. FALCONER. Donald P. (R) 1013 Maple Ave.. Evanston, III. (Sales Engineer) FALLON. Frank J. (WI) 29 Felton. West Newton, Mass. (Raytheon Manufacturing Co.) FALTER, Arthur H. (R) 8655 Jacob PL. Niagara Falls. N. Y. (Carborundum Co.) FARBER. Louis G. (DO Ceramics Monthly, 4175 N. High St. Columbus 14. Ohio FARGO, Jarvis J. (G) 28 Wilson St.. Coming, X. Y. (Coming Glass Works) Vol. 33. No. 10 (1056) rARKAS. Howard (M) United States Stoneware Co. 50 E. 42mi St.. New York 17. X. Y. rARNELL. James H. ('.V) Louthan Manufacturing Co. East Liverpool. Ohio FARR. Archie E. <E> O. Homme: Co.. 3ox 475 Pittsburgh 30, Pa. FARROW. Lewis C. (El R. R. 1. Clyde, Ohio (Whtripooi Seeger Corp.) FASOLD. G. A. (E) 7329 3errard Ave.. Cincinnati 31, Ohio (Philip Carev Mfg. Co.) FAUCHOX-3AUDOT. J. B. Ets. Fauchon-Baudot 21. Ave. de Tourville. Paris 7, France FAULKNER. Karl B. (G) 179 Victory Hwy,, R.R. 2 Painted Post. X. Y. FAUST. Ernest H.. Jr. (RI) 53 Xlarman Dr., Mt. Carmel, Conn. (American Refractories 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. (Generai Refractories Co.) FEAGIN, R. C. (31) Austenal. Inc. 224 E. 39th St.. New York 16, N. Y. FEASTER. Richard V. 560S L'niversity Way. Apt. 5 Seattle 5. Wash. FEDERAL GLASS CO. (Henry H. Blau) 515 E. Inn is Ave. Columbia 7. Ohio FEDERAL SEABOARD TERRA COTTA CORP. (O. E. Mathiasen) Box 301. Perth Ambov, N. J. FEOOCK. Michael ?. -R) 4214 Ash wood Dr.. N. W. Canton 3. Ohio (Republic Steel Corp ) FEIGELSOX. Robert S. 720 Techwood Dr.. Atlanta. Ga. FEINBLOOM. David T. 3459 park Ave . Wan'agh. L. N. Y. FELD. Philip c/o Borenstein 137-09 70th Rd.. Flushing, N. Y. FELDMAN. Gail H. i GJ) 4J Villa Ct.. Hempstead. N. Y. (United States Navy) FELKER. Ernest (W) Box 33. 3403 Summer Rd. Macedonia. Ohio (Ferro Corp.) FELLOWS. R. L. (EFT) 748 N. Kensington Ave.. La Grange. III. (Century Vitreous Enameling Co.) FELS. C. G. (RI) 11 DeForrest Ave. North Plainheid. 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. FEXS7ERMACHER. John E. (RJ) 302 Cherry, Clearfield, Pa. (Harbison-Walker Refractories Co.) FENTON. Walter M. (E) Lithium Corp. of America, Inc. 2S60 Rand Tower, Minneapolis 2, Minn. FENTZKE, A. Daniel (R) 840 Hickman Rd.. Augusta. Ga. (Babcock St Wilcox Co.) Roster 31 FERGUSON. Donald Eox 929, Alfred. N. Y. FERGUSON. Dougias J. (D) Pigeon Forge Pottery Pigeon Forge. Tcnn. FERGUSON. D. Robert, Eli (Fm 401 Vine St.. East Liverpool. Ohio (Crescent Brick Co., Inc.) FERGUSON, Robert F. (G) 1765 Caleb Dr.. Zanesville. Ohio Hazel-Atlas Class Co.) FERGUSON. Robert L. (S) Yankee Hill Brick Mfg. Co. 723 Stuart 3!cg., Lincoln 3, Nebr. FERON. Marcel Administrateur-delegue Societe Beige de Ceramique "Cerabel" Rue d'Herchies, Baudour. Belgium FERREIRA. Laurence E. (B) Willoughby Arms. Apt. 2-C Golden. Colo. (Coots Porceiain Co.) FERRES. Daniel Viiiplan S. A.. Real No. 4415 Montevideo. L'ruguav FERRIS BRICK CO. <R. T. Wilson) Box 138, Ferris. Texas FERRIS. Harry Philip (M) 20 Birch Dr.. Levittown, Pa. (Simonds Abrasive Co.) FERRES. James E. iG) Hooker Electrochemical Co. Niagara Falls. X. Y. FERRO CORP. (R. A. Weaver) 4150 E. 56th St.. Cleveland 5, Ohio FERRO ENGINEERING CO. (Benjamin F. Anthony) 1400 Hanr.a Bldg.. Cleveland 15, Ohio FE5LSR. Ray T. (\V) A.A.A. Corp.. 3ox 315, Gadsden. Ala. FE55LER. A. H. U.YFI) 4J3 5. Edgewood. Lombard. 111. (A C Spark Plug Div.. General Motors Curp.) FETTER. H. ;R) Cia. Mexicana de Refracrarios A. ?. Green. S. A.. Hamburgo 51 Apartado Postal 71 3ts. Mexico. D. F. FETTERLEY. Guy H. (R) Box 26. Chippawa. Ont.. Canada ,, (Norton Co.) FETZER. George W. (M) 12C5 1 r:h Ave.. Columbus 11. Ohio (George Fetzer Ceramic Supplies) FEYL'NG. Caus A. Eie Stentoitabrtk Egersund. Nonvav FIBERGLAS CANADA, LTD. (John MacRae) Box 209 Gueiph, One.. Canada FIEDLER. William S. (G) Bjorksten Research Labs.. Inc. Box 265, Madison 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. 1 Owensboro Sewer Pipe Co.) FILES. John A. (E) Radio Corp. of America Tube Division 3301 Adams. Marion, Ind. FILIPPI. Hugo (SF) Illinois Brick Co.. Room 2240 223 N. LaSalle St.. Chicago 1. III. FTLLMORE. Charles L. (WI) Globe-Union, Inc. 900 E. Keefe Ave.. Milwaukee 1. Wise. FINDLAY CLAY PRODUCTS CO, (R. S. Craft) Washington. Pa. FINLAY, G. R. (R) 2231 Waters Ave. Niagara Falls, Ont.. Canada (Norton Co.) FINLAYSEN, John R. School of Ceramics Rutgers University New Brunswick, N. J. Vol. 35, No. 10 (1056) FINNEY. Edwin L. <S; Clavcratt Cj.. Shawnee. Ohio FIRESflNE. Arthur G. (G) 34 Dewey Ave.. Fairport, N. (Bausch & Lomb Optical Co.) FISCHER. Eugene A. '?.) 108 Newton Ave., N. Worcester 9, Mass. (Norton Co. > FISCHER. Peter R. i.J) Goethestr. 54 Wueifrath/ Rhid.. GermansFISCHER. Robert j. f.W> IS Fairway Ave. Y. West Long Branch, N. J. (Signal Corps Engineering Labs.) FISH, E. Thomas (RJI) Great Lakes Carbon Corp. 58th St. & Pine Ave. Niagara Falls. N. Y. FISHEL. Waite P. (B) R. R. 2. Pleasant Citv. Ohio FISHER, Eugene A. (W) Electric Auto-Lite Co. Spark Plug Div.. Fostoria. Ohio FISHER. Henry C. (R) Norton Co., 1 New Bond St. Worcester 6, Mass. FISHER. Joseph R. (W) Bell Telephone Labs.. Rm- 1A-341 Murray Hill, N. J. FISHER. Richard G17 Weils St. Horned. X. Y. FISHER, William V. (G) Anchor Hocking G!a>* Con*. Lancaster. Ohio FISHKIN. Henry W. i W) 233 Mantua St.. Park Forest. III. ( Ferro Corp.) FISHLEY. William S. f\Y) Sparta Ceramic Co. East Sparta. Ohio FISH-SCHURMAN CORP. (Murray Yawitz) 70 Permian Rd. New Rochelle. N. Y. FITZGERALD. Alex E. (RI) A-4 Avon Apts.. Narberth. Pa. (General Refractories Co.) FITZGERALD. J. Vincent (W) Tile Council of An. Research Center School of Ceramic*. Rutgers University New Brunswick. X. J. FITZPATRICK. William 19. <R) 1009 Vermont Ave.. Ant. 2 Pittsburgh .14. Pa. ( Karbison-Walker Ret'rncturies Co.) FITZSIMMONS. Elmer 5. , RI) Chem. & Abraives Research Dept. Cincinnati Milling Machine Co. Cincinnati 9. Ohio FITZSIMMONS. Koi*r: F. (W) R. R. l. Oakheld. N. Y. (Lapp Insulator Co.. Inc.) FIX. Frank A. (X) Posey Iron Works. Inc. Lancaster. Pa. FIX. William G. (M) Carborundum Co.. (linhar Div. 3335 W. 47th St.. Chicago 32. WL FLEISCHER. Arthur (B) Nickel Cadmium Battery Corp. Box 349, Easthamptou. Mass. FLEMING. A. P. M. Metropolitan Vickers Electrical Co., Ltd. Trafford Park. Manchester 17, England FLEMING. Charles A. (El) 3613 General Bares Dr Nashville 4, Tenn. (Pemco Corp.) FLEMING, David M. (SJ) 322 E. Irwin Ave.. State College. Pa. (Glen-Gery Shale Brick Corp.) FLEMING. Raymond C.. Jr. (M) 3113 Henderson Cr. W. Lakeland. Fla. (International Minerals & Chemical C<>n>.) FLEMING. Thomas T. (R) Frank Samuel i Co. Inc. 2200 L:r.coin-L:ber:y 3Idg. Philadelphia 7( Pa. FLEXON. John D. < R j J440 Gzi-atir. RJ.. Toledo. Ohio (Owens-i'.Lr.ois) FLICK. Fulton 3. t.R; 3rown. C.'itthlcw. Flick i Peckham 1706 Firs: National 3ar.k 3idg Pittsburgh 22. ?a. FLINT. E. ?. | 31 . Arthur D. Little. Ir.c. 20 Memorial Dr., Cambridge 42. Mass. FLINT, Francis C. (GFI) Hazel-Atlas Glass Co. 15th & Jacobs Sis., Wheeling, W. Va. FLORENCE. Jack M. (C) Kimble Glass Co. Box 1035-1036. Toledo 1, Ohio FLORIDA TILE INDUSTRIES. INC. (James W. Sikes) 603 Prospect St. Box 451, Lakeiand, Fla. FLOYD. William A. Box 4360. State College Sta. Raleigh. N. C. FLU. Eldon 3ruce (W) 1533 Crooks Rd.. Royal Oak, Mich. (Ceramic Div. Champion Spark Plug Co). FLYNN, Paul H. (3) International Nickel Co.. trie. Bayonne Works, Bayonne. N. J. FOGEL3ERG. Sven Webb's Crystal Glass Co., Ltd. Dennis Glassworks Stourbridge. England FOLKERS. Charles L. (RJ) 917 Park Ave.. Ackiey, Iowa FONTANA. Eugene H. (G) Box 259. Corning, N. Y. (Coming Glass Works) FONVIELLE. Frank ?.. Jr. (WI) Den:i>: Supply Co. of New York 500 W. College Ave.. York. Pa. FOOTE MINERAL CO. ;L. G. 2:-Nsi 13 w. Chelten Ave. Philadelphia 44, Pa. FORAKER. Robert W. (Eli Titanium Pigment Corp. 99 Hudson St.. New York 13. N. Y. FOR3ES. Charles C. |G) Alien 3. Du Mont Labs. 750 31oonrie:d Ave . C!ifrcn, N. J. FORBES. Lewis J-3. (G) Pilkington Bros. (Canada) Ltd. 165 Bloor 5:.. E. Toronto 5. On:.. Canada FORD. Fred J. (S) 3ox 295. San Francisco. Calif. (Consultant) FORD. George D. (WI) 2136 Wilmer St.. Zanesville. Ohio (Mosaic Tile Co.) FORD. Waiter D. (GI) Pittsburgh Coming Corp. Research 3t Development Div. Port Allegany. Pa. FORD. Wiiliam D. (E) 1704 W. 54th St.. La Grange. III. (Sears Roebuck 3c Co.) FORDS PORCELAIN WORKS (I. A. Hansen) Perth Amboy, N. J. FORESMAN. Grover C. (G) 212 Cedar St., Coming, N. Y. (Coming Glass Works) FORJAZ. Xicolau Porto Ferreira, C. P. Sao Paulo. 3razil FORKNER. Henry R. (XI) 201 Fairview Ave., Blacksburg, Va. (Virginia Polytechnic Institute) FORLAND. Tormod (G) Pennsylvania State Lrdiversity Dept, of Ceramic Technology University Park, Pa. Roster M FORMAN, Sydney A. (3) Dept, of Agriculture, Chemistry Div. Science Service Ottawa. Ont., Canada FORNIA. Robert F. (EJ) 2326 N. 60:h St.. Seattle. Wash. (L'niteu States Air Force) FORTH. Robert D. (E) 1269 N. W. Circle Dr. Kankakee, 111. (Florence Stove Co.) FOSDICK, Marion L. I'DF) 100.V. Main St.. Alfred. Nr. Y. FOSTER-FORBES GLASS CO. (F. R. Motsch) Marion, Ind. FOSTER. H. B. (S) Brick St Tile Service. Inc. Box 2935, Greensboro, X. C. FOSTER, Luther M. (B) Aluminum Co. of America Alcoa Research Labs. Box 772, Xew Kensington, Pa. FOSTER, Wilder D. (B) S405 Bower Ave., Verona, Pa. (U. S. Bureau of Mines) FOSTER. Wilfrid R. (BF) Department of Mineralogy Ohio State University Columbus 10. Ohio: FOSTORIA GLASS CO. (Roy G. Yeater) Moundsville, W. Va. FOURATT, Robert F. (R) 113 Willow Dr.. Little Silver, N. J. (Carborundum Co.) FOX. Charles S. (R) Aluminum Co. of America 3615 Olive S.. St. Louis 3. Mo. FOX, Marilyn Box 161. Alfred, X. Y. FRAD. William A. (R) 1800 Oak St.. Rolla. Mo. (Missouri School of Mines) FRAHME. Herman H. (WI) 2353 Banning Rd.. Akron 13, Ohio (U 3. Stoneware Co.) FRAME. Dudley Jr. (MI) 2366 Club Rd., Columbus 21, Ohio (Harrop Ceramic Service Co.) FRANCS. J. H.. REFRACTORIES CO. (William A. France) Snow Shoe, Pa. FRANCE. William A. (R) J. H. France Refractories Co. Snow Shoe. Pa. FRAXCESCHIXI. Feiippe J. V. de A. Ceramica Sao Caetar.o Caixa Postal 273. Sao Paulo, Brain FRANCIS. Ronald K. (I) Box 3-17. Alfred. X. Y. FRANCISCO. Allen C. (RI) Brook Lane. R.R. 1 Chesterland, Ohio (Kolcast Industries. Inc.) FRANCK. Leon Etx. Franck 3c Steeman. S. A. 20. Avenue Emmanuel Haren-Xord/Brussels. 3elgium FRAXCL. Josef (B) 1302 Perth St.. Toledo 7, Ohio (Owens-Illinois) FRANK. Arthur W. (R) 2234 Auer Park Pewaukee Lake. Pewaukee. Wise. (Hevi-Dutv Electric Co.) FRANK. Henry A. (W) Rockport Sanitary Pottery Corp. Rockport. Ind. FRANK, John (D) Frankoma Pottery. Box 789 ' Sapulpa, Okla. FRANKLIN. Earl W. (RI) 811 Columbia Ave.. Sr. Joseph, Mich. (Laboratory Equipment Corp.) FRANKLIN. William S. (GI) 918 Grassmere Ave.. Waoamassa, N. J. (Bendix Aviation Corp* Red Bank Div.) FRANKOMA POTTERY (John Frank) Box 739 Sapulpa, Okla. Vol. 35. No. 10 (1956) FRANTZ, Samuel G. (M) S. G. Frantz Co.. Inc. Box 1133. Trenton 6. N. J. FRANTZ. S. G., CO.. INC. (Samuel G. Fran::) Box 1123 Trenton o, N. J. FRANZ. Leo J. lS Acme Brick Co., .Malvern, Ark. FRASER. Lewis H. D. (BI) Dan-Mar Apt. 106, Marion, Ir.d. (RCA Tube Division) FRASER. Orray T. (GI) 574 E. Mithon St.. Columbus 6. Ohio (B. F. Drakenfeid a: Co., Inc.) FRASER, Walter A. (G) 1320 E. 56th St.. Chicago 37, III. (Chicago Midway Laboratories) FRASER, W. B. (S) Fraser Brick Co., 3ox 144 Dallas 1, Texas FRAZIER. C. E. (GF) Frazier-Simplex, Inc. 436 E. Beau St., Washington, Pa. FRAZIER. C. T. (G) 527 E. Beau St., Washington, Pa. (Frazier-Simplex, Inc.) FRAZIER. J. Earl (GrI) 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. (RI) 24 Meadowood Lane, R.R. 4 Chagrin Falls, Ohio FREDERICK. Gilbert M. (R) Babcock & Wilcox Co. 3 Penn Center Plaza Philadelphia 2. ?a. FREDERICK. Vernon W. (G) Libbey-Owens-Ford Glass Co. Rosstord. Ohio FREDERICKS. John D. (S) Pacific Cay Products Box 2173. Terminal Annex Los Angeles 54. Calif. FREDRIK3SON. John I. (R) Norton Co.. Box 37 Niagara Falks. Ont.. Canada FREEMAN. Charles A. (RFIJ 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.. (DF) 12? N. Main St.. Alfred, N. Y. FRENCH. Preston W. (GI) 1517 Union Ave.. Brackenridge, Pa. (Pittsburgh Plate Glass Co.) FREY, E. F. (M) DeVilbtss Co., Toledo 1. Ohio FREYDELL. Octavio Loceria Colombians 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 DIV.. GENERAL MOTORS CORP. (W. H. Pfeiffer) 300 Taylor St.. Dayton 1, Ohio FRISK. Norman E. (R) 2046 Evansdale Ave., Toledo 7, Ohio (Owens-Illinois) FRITZ, Earl C. (W) 16 5. Main St.. Franxlinville, X. Y. (Precision Ceramics, Inc.) FRITZ. E. K. (WFI) 710 Walnut St.. Latrofce, ?a. (Siupakon Div., Carborundum Co.) FS03ERG. Laird (R) Owens-Corr.ing Fioerglas Corp. Case Ave.. Newark, Ohio FROME. Howell E. (G) United Fuel Gas Co.. Box 1273 Charleston 25. W. Va. FROXCZAK, E. T. (S) Richland Shale 3r:ck Co., Box 323 Mansneid. Ohio FROST. Leon J. (E) Box 138. Lewiston, N. Y. (Titanium Alloy Mfg. Div. National Lead Co.) FRY, Herbert G. National Enamels. Ltd., 53 Norman Rd. Greenwich. London, S. E. 10, England FRYE. John C. (3) State Geological Survey 121 Natural Resources Bldg. Urbana, 111. FRYE, John F. 402 Calhoun St., Salisbury'. N. C. FRYSINCER. James B. (M) Pennsylvania Glass Sand Corp. Two Gateway Center, Pittsburgh, Pa. FUENZALIDA, Javier H. (W) Foreign Div., American Radiator & Standard Sanitary Corp. 40 W. 40th St., New York 18, N. Y. FUJII, Takashi Yale University. Dept, of Chemistry New Haven. Conn. FULKER. Richard H. (El) 1408 Nicklin Ave., Piqua, Ohio (Peraco Corp.) FULLER. A. A. (X) 322 S. Twvckenham Dr. South Bend, Ind. (Soil it Construction Co.. Inc.) FULLER. Donald H. (El) 335 S. Cook Ave.. Trenton. N. J. (Trenton Fabricated Metal Co.) FULLER. L. R. (El) 959 E. South St.. Frankfort. Ind. i.Ingram-Richarcson, Inc.) FULLER. Richard 3. tWI) Universal Clay Products Co. 1523 First St., Sandusky, Ohio FULLER. Richard G. (W) D. E. McNicol Pottery Garksburg, W. Va. FULLER. Wilfred (E) General Steel Wares Ltd. Adelaide St Nelson Sts. London. Ont.. Canada FULMER. Raymond C. (WI) Stackpole Carbon Co., St. Marys, Pa. FULRATH. Richard M. (RI) University of California 164 Hearst Mining Bldg. Berkeley 4, Calif. FUNK. Harry C. CG) Eagle-Picher Co.. Insulation Div. Box 290, Joplin. Mo. FUNKEY. John H. (G) Carr-Lowrey Glass Co. Kloman 6c Wenburn Sts. Baltimore 3. Md. FUNKHOUSER 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) 3501 Tyrone Dr., Louisville 13, Ky. (General Electric Co.) FUWA, Tasuku Massachusetts Institute of Technology Rm. 3-314, Cambridge 39, Mass. Roster 35 G GAFrNtV, Leriuy J. 1105 W. 'll: r.oi-* St., L'rbaua. 111. GAG IN. L. V. i G ) 2516 L;:ton:a Slvd., i olofo 6. Ohio (L-O-F Gla = * Fibers Co.) GAiLEY. Matthew D. 2601 W Montiake P!.. Seattle 2, Wash. GAINER. Taylor M. i W ) 21 i Steedley Dr., Louisville 14. Ky. ( American Radiator i Standard Sanitar;-- Corp.) GAINES. Robert F. (. S ) E. 10801 Sprague, Spokane 65. Wash, i Washington 3rick 4 Lime Co.) GAISER. R. Arthur (G) Ball Brothers Co.. Inc.. Muncie. Ind. GAL3REATH. William W.. Jr. (RI) I'M Clinton Avc.. Apt. 5-C Brooklyn 5. N. V. i Babcock & Wilcox Co.) GALE. Richard K. (B) JOS 1 AlJ.>:on Rd. Cleveland Heights 21, Ohio i Ferro Corp. > GALLAGHER. Thomas F. (G) Lacleiie-Chrisry Co. Div. H. K.1 Porter Co. 2512 First National Bank Bldg. Pittsburgh 22. Pa. GALLUP, John t.GI) Radio Corp. of America. Tube Div. 415 S. Fifth St.. Harrison, X. J. GALUSHA. Richard L. (W) Continental Ceramic Corp. 3ox 41. 3igierville. Pa. GALVIN. G. H.. Jr. <S) Rockfora Brick St Tile Co. Rockford. Iowa GALVIN. Richard J. (S) Sheffield Brick & Tile Co. Sheffield 1. Iowa GAMBLE. David L. i R) New Jerey Zinc Co. of Pa. Research Deo:.. P.airr.erton, ?a. GAM3LE. John D. f\V) 3ell 4 GossetT Co.. 3200 Austin Ave. Morton Grove. 111. GaNDV. Robert J.. Jr. JOJ2 Ea^tSake. Apt. .1 Seattle J. Wash. GANGLZR. James J. (R) 20523 Stanford Ave. Fairview Park 26. Ohio ! National Adviory Committee for Aeronautics) GANGULI. Umaoati Bengal Enamel Works Ltd. P. O. Bengai Enamel. Dist. 24 Parganas West Bengal. India GAN PULE, Ar.ant K. Parshuram Pottery Works Co., Ltd. Morvi. Saurashtra. India GANTS. Sheldon B. ID) Ceramic Associates. Inc. 5650 Dvre Ave.. New York 66, N. Y. GARBISCH. Norbert S. (W) Garco Products. Inc. Box 551. Butler. Pa. garcia-leal. Ramon (Mi) Apartado Postal 1115 Monterrey X. L., Mexico (Manufacturers Representative) GARCO PRODUCTS, INC ( Norbert S. Garbisch) Box 551 Butler. Pa. GARDEN. Henry R., Jr. (S) Box 508. Salem. Va. (Old Virginia Brick Co., Inc.) GARDNER. Walter E. (S) Ladrillera Monterrey S. A. Apartado 560 Monterrey. N. L., Mexico GAR DON. Robert (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 15. Pa. GARFIELD REFRACTORIES CO. (Kenneth A. Rugh) Bolivar. Pa. Vol. 3.5, No. 10 (1956) GARLAND. C. F. fSi Mason City 3rick & Tile Co. Mason Citv. Iowa CARLICK. Oakley H. (M) Paul O. Abbe, Inc. Little Falls. N. I. GARLICK. Philip L. t!) I Gladys St,. Cyriiccne Johannesburg. South Africa ( Primro>e 3rick Works) GARONZIK. S. H. f$) 4211 Brookview Dr.. Dallas. Texas (Crown 3rick Mfg. Co.) GAR RON I, Ricardo Rua Padre Joao Manuel `5*5 Sao Paulo. Brazil (Ceramica Sanitaria Porcelite S/A) GARSTANG. Alec King, Taudevin 4 Gregson Ltd. Grindlegate Works, Scotland St. Sheffield 5. York, England GARTNER. Carl W. i\V) General Coior 4 Chemical Co., Inc. Box 7. Minerva. Ohio GARTNER. George C. (W) General Color Sc Chemical Co., Inc. Box 7. Minerva. Ohio GARVE. T. Walter (SFI) 69 W. Weishcimer Rd. Columbus 14, Ohio (Consulting Engineer) GARVEY. Lawrence P. (RI) RCA Victor. 415 S. Fifth St. Harrison. N. J. GASKINS. W. W. (MI) Sierra Talc it Clay Co. Bnx 590. South Pasadena, Calif. GATES. Darnel W. (XI) R.R. 4. Box 221, Huntsville. Ala. ( Redstone Arsenal) GATES. Louis E.. Jr. Hughes Aircraft Co.. Bldg. 20 Rm. 101SB. Culver Citv, Calif. GATES. Major E. (R) 775 Vista Grande Ave. Los AltOi. Calif. GATLIN. E. H. (S) Texas Clay Products Co. Box T. Malakorf. Texas GAUDIANO. Victor M. (W) Sanitarios Es Aguila S. A. Apartado Postal 26503. Zona 14 Mexico. D. F. GAUNDER. Wilbur ?. (G) Pittsburgh Plate Glass Co. Works No. *1. M. Vcmon, Ohio GAUTSCH. Murray C. (MH Metal 4 Thermic Corp. 415 E. 151st St.. East Chicago. Ind. GAVIN. G. P. (W) Kohler Co.. Kohler. Wise. GAWTHROP. Alfred (S) 885 Maplewood Rd.. Lake Forest. 111. (Chicago Brick Co.) GAY. Hayward A. (R) Cincinnati Milling Products Div. Cincinnati Milling Machine Co. 4701 Marburg Ave.. Cincinnati 9. Ohio GEE. Kenneth H. (B) 2033 Westfield Terrace, Bethlehem. Pa. (Bethlehem Steel Co.) GEIGER. Charles F. (RFI) Carborundum Co.. Box 268 Perth Amboy. X. J. GEIGER. Joseph S. (M) 46 E. Welling Ave. Pennington, X. J. (Titanium Alloy Mfg. Div., National Lead Co.) GEISINGER. E. E. (EF) Pfaudler Co.. 1000 West Ave. Rochester 5, X. Y. GEIST, William J. (X) Young Machinery Co., Muncy, Pa. GELLER, R. F. (WFI) 5427 York Lane, Bethesda 14, Md. (National Bureau of Standards) GELSTHARP, Frederick (GF) 1154 Park St.. Tarentum 1, Pa. GELTMAN. Gerald 276 \V ir.throp Rd.. Teaneek, N. J. GEMMELL. G. (G) Goldir.g-Keene Co., Box 456 Keene. N. H. GEM?. Rortr: W. (R) 500 Michell S:.. Ridley Park, Pa. (Botfieid Refractories Co.) GENDEL. Sydney Z. iR> 4050 Eastway Rd. South Euclid 21, Ohio (Zirconium Coro, of America) GENERAL CERAMICS CORP. (Salvatore Ortepio) Crows Mill Rd.. Keasfcev, X. J. GENERAL COLOR & CHEMICAL CO.. INC. (George C. Gartner) Box 7, Minerva. Ohio GENERAL ELECTRIC CO. (X. F. Snofstall) 1S1! LeMovne Ave.. Syracuse, X. Y. GENERAL ELECTRIC CO. f L. E. ThiessJ Insulator Dept. Baltimore 50. Md. GENERAL ELECTRIC CO. (W. S. Kahlson) Lamp Dept.. Pitney Glass Works Neia Park 12. Geveland, Ohio GENERAL GLASS EQUIPMENT CO. (Victor A. Plumbo) 5 S. Virginia Ave. Atlantic Citv. X. J. GENERAL REFRACTORIES CO. (Russell P. Heuer) 1520 Locust St. Philadelphia 2. Pa. GENTRY, Raymond (G) Alexander H. Kerr & Co., Inc. Box 2003. Santa Ana. Calif. GENTSCH. A. Page (M) United Clay Mines Corp. 101 Oakland St.. Trenton. N. J. GENTSCH, 3ern'nard F. (M) United Clay Mines Corp. 10! Oakland St.. Trenton, N. J. GEORGE. W. R. i\V) Canonshurg Pottery Co. Canonsourg. Pa. GEORGE. W. S. (W> W. S. George Poitery Co. Park Avc.. East Palestine. Ohio GEORGE. W. S.. POTTERY CO. iW. S. George) Park Ave. East Palestine. Ohio GEORGIA-CARO LIN A BRICK 4 TILE CO. (J. C. Hagier. Jr.) 10 Campbell Bldg., Augusta. Ga. GEORGIA KAOLIN CO. (Robert H. Bollinger) 455 N. Broad St.. Elizabeth 3, N. J. GERHART, Charles D. (S) Cedarhurst. Holly Springs. Miss. (Holly Springs Brick St Tile Co., Inc/ GERBER. Oscar L. (W) Gerber Plumbing Fixture Corp. 232 N. Clark St., Chicago 1, III. GERCAR. Francisco J. S. A. Cristalerias Del Uruguay Comercio 1491, Montevideo, Uruguay GERSCH. Herbert (S) 3557 Ontario St., Columbus 11, Ohi< (Claycratt Co.) GERSTEN5CHLAGER, V., Jr. (R) Babcock St Wilcox Co.. Box 923 Augusta, Ga. GERSTER. C. W. (WI) Louthao Manufacturing Co. 2000 Harvey Ave., East Liverpool, Ohi* GETTO. Allan 585 E. 16th St.. Brooklyn 26, X. Y. GHERIXG. Leonard G. (GF) Preston Laboratories, Box 149 BatliT, Pa. GlACOMELLI, Domenico Soc. It. Retrattari Marghera Azionaria Via Industrie 52 Cas. Post. 308 Marghera, Venice, Italy Roster 3 CIA N G. V u Kim Choan Huat Co. Inc. JII Josc Rizai S:.. Mar.daJuyong Rizai Province. Philippines Cl 3 3, Mary J. American Crrarr.ic Society 055 X. High 5c.. Columbus Ohio GOBS. Melvin 3. (E) Inland Steei Co.. Quality Control Dept. East Chicago. Ina. GI3SON, Frank B. (E) 9 Terrace Circle " Great Neck. L. I., N. V. i Seaporcci Metals. Inc.) GIBSON. R. L. (\VI) 1314 Wilmington Avc. New Castle. Pa. (Shenango Caina, Inc.) GIBSON. Robert C. (E> Parker Rust Proof Co. 2177 E. Milwaukee Ave. Detroit !). Mich. GIE5EKE. Fran: Kockums Err.aljcrverk Ronncby, Sweden GIESER. Ralph H.. Jr. (E) Rheem Manufacturing Co. 7600 S. Kedzie, Chicago 29. III. GIESS. Edward A. (I) Box 90J, Alfred. N. Y. GIL. David (D) 122 McCall St.. Bennington, Vt. < Cooperative Design) GIL3ERT. George W. (G> Owens-Coming Fiberglas Corp. 598 Madison Ave., New York 22, X. Y. GILES. James H.. Jr. (El) 821 Brett St.. Apt. 2 Pittsburgh 5, Pa. (O. Homme! Co.) GILES. Raymond (W) 142 McKeever St., Crooksville. Ohio (Crookaviile Caina Co.) GILES. Thomas M. 1674 Berkshire Rd.. Columbus. Ohio GILF1LLAN. B. T. (R) Climax Fire Brick Co., Climax. Pa. GILFILLAN. j. M. (W) New jersey Porcelain Co. Sox 903. Trer.ton 5, N. J. GILL. John H. : R) Giii Cay Pot Co.. Muncie, Ind. GILL. Joseph W. (MI) 635 Van 3uren St.. Des Plaines, IU I V. S. Gypsum Co.) GILL. La Verne N. (WT) American Radiator 4 Standard Sanitary Corp.. Box 268 Torrance. Calif. GILL. W. 7.. Jr. (S) Texas 3 rick Co.. Box 510 3 rownwood. Texas GILLESPIE, H. M. (M) 225 Broadway. New York 7. N. Y. GILLIARD. Joseph W. (D) 108 W. County St., Phoebus. Va. (Hampton Institute) GILLIES. Daniel M. (B) Linde Air Products Co.. Research Lab. 3ox 44, Tonawanda, N. Y. GILLINDER BROTHERS. INC. (J. Fletcher GiUirider) Port Jervis. N. Y. GrLLINDER. J. Fletcher (G) Giilinder Brothers, Inc. Port Jervis. N. Y. GILTNER. Benedict C. (S) Foley 4 Grove. Bensenville. III. (Lindberg Engineering Co.) GIMSOX. Joseph 'F. Worcester Royal Porcelain Co.. Ltd. Royal Porcelain Works Worcester. England GINCOLD. 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. < E General Electric Co. General Engr. Lab.. 3Mg. 37. Rm. 299-33 One River Rd.. Schenectady 5. N. Y. GITTER, Alice Josephine (MFI) J9 V/. 70th. New York 23. N. Y. (Whittaker. Clark & Daniels. Inc.) GITZE-V Walter H. (R) 1 Wesiey Dr.. Belleville, 111. (Aluminum Co. of America) GIVEN, Conrao W. (E) Great Lakes Steel Corp. Ecorse. Detroit 29. Mich. GLABAU. Ernest R. (G) 140 Wocrd Ave.. Waltham 54. Mass. (Ravtheon Mfg. Co.) GLADDING. Albert C. (S) Gladding Bros. Mfg. Co. Third St Keves St.. San Jose. Calif. GLADDING. McBEAN & CO. (S. V. Sagir.or) 2901 Los Feliz Blvd. Los Angeles J9. Calif. GLADNEY. Kurt (G) Ftbergias Canada Ltd., Box H Sarnia, On:.. Canada GLASER. Frank W. (R) Alloy Precision 'Castings Co. E. 45th St. 4 Hamilton Ave. Cleveland 14. Ohio GLASER. John H. (C) Uniscience Ine. 112 Crooked Billet Rd., Hatboro, Pa. GLASFORD. James W. 1350 Boilvin Ave., Rockford, 111. GLASSER. Fred P. Pennsylvania State University 226 Mineral Sciences Bldg. University Park. Pa. GLAZE. Francis W. (GFI) 4100 Gallatin Sc,, Hyattsville. Md. (National Bureau of Standards) GLEN-GERY SHALE BRICK CORP. (Gordon E. Lewis) Box 36. Shillington. Pa. GLZXSKAW 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 Minerals 4 Gicmicat Corp. 5401 Harrison St.. Skokie. 111. GLOSSBRENNER. D. I. (M) R.R. 12, Box 251. Indianapolis, Ir.d. (Kaolin. Inc.) GLOSTEX CHEMICALS. INC. (C. G. Wurtsbaugh) 3056 Bandini Blvd. Los Angeles 23. Calif. GLOWACKI. George V. (W) 63 Linden Ave.. Bloomfield, N. J. (Radio Corp. of America) GLYNN, T. W. (G) 1505 Fairidge Dr.. Kingsport. Tenn. (Blue Ridge Glass Corp.) GODBOLD. Jack W. (W) 1303 Bluebird Ln.. Garland, Texas (Fcito 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. Gemson, S. C. GODOY. E. A_ & CO,, INC. (Emilio A. Godoy) 25 Broadway New York 4. N. Y. GODOY, Emilio A. (R) E. A. Godoy 4 Co., Inc.. 25 Broadway New York 4. N. Y. GOETCH1US. Don R. (E) Ferro Corp. 4150 E. 56th St.. Cleveland. Ohio GOIN, Fred L. (SI) Gladding, Mc3ean 4 Cu., Lincoln. Calif. GOLDING-KEENE CO. (J- G. Gemme:!) 3ox 456 K-ere. N. H. GOLDMAN. Basil 3. CS) Rhodes Chemical Co. 1545 S. S;a:e 5:.. Chicago 5, 111 GOLDSMITH, Julian R. ( 3 1 University or Chicago Dept.of Geology, Chicago 37, III. GOLDSTEIN. Marcy B. (EJ) 6 Glenfair Rd.. Fair Lawn. N. J. (United States Army Chemical Corps.) GOLDSTEIN. Martin tG) Mellon Institute. Pittsburgh 13, Pa. GOLIBER, Edward W. (B) 2602 N. Connecticut. Royal Oak. Mich. (Genera; Electric Co.) GOMEZ, Leon D. Cristaleria Peidar J.tda Medellin. Colombia GOMEZ, Salvador Odriozola (R) Fabrica de Ladrillos Industriales y Refractarios. S. A.. Apartado 390 Monterrey, L.. Mexico GONDER. Lawton (\V) Goncer Ceramic Arts. Inc. Box 448. Zanesville. Ohio GONZALES. Narciso (M) Eagle Pencil Co. 710 E. Nth Sc.. 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. 326 S. Main St.. Akron 8. Ohio GOODMAN._Gilbert (B) General electric Research Lab. Box 1083. Schenectady. N. Y. GOODMAN. James S. (E) American Radiator 4 Standard Sanitary Corp., 334 E. Broadway Lcuisvjlle 4. :<v. GOODRICH. Hoben R. (WI) 1522 Santa Barbara Ave. Glendale 3, Caiif. (Gladding, Mc3ean 4 Co.) GOODRIDGE. Paul Box 347. Alfred. N. Y. GOODWIN. William Jarrard (3) 3464 Wallace Dr.. Grand Island. N. Y. (Electro-Metallurgical Co.) GORDON. Irwin f.W> RCA Laboratories Div. Princeton. N. J. GORDON. John R. (R) Zirconium Corp. of America Solon. Ohio GORMLY. Maurice W. (W) 7330 Miami Hills Dr., Madeira. Ohio (Cincinnati Milling Products Div., Cincinnati Milling Machine Co.) GORNALL. Henry A. (MI) 4JS7 Ardmore Rd., S. Euclid Cleveland 21. Ohio (Allied Engr. Div.. Ferro Corp.) GORSUCH. Cnarles A. (M) Ayers Mineral Co., 806 Market St. Zanesville, Ohio GORT. Walter 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. ^Vhearlands." 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) Roster 3 GOULD. Anita H. (GJ) 320 E. z.i^h;h Ave., Tarcntum. Ta. (Pittsburgh Plate Glass Co.) GOULD. Robert E. (WFI) Bunaio Pettery, Ir.c. 25 Hayes PI.. Buffalo 10, N. Y. GOWER, !r.*ir.g '.V. ;'R1 516 \V. 3ouIevard. Mexico. Mo. (Mexico Refractories Co.) GRAFF, Tames 3. (S) , Grarf-Kitlinning Clay Prods. Co.' Worthington, Pa. GRAFF-KITTANNING CLAY PRODUCTS CO. (James B. Worthington. Pa. GRAFF, William A. (G) Glass Technology Lab. Gratf) General Electric Co. 1133 E. 152nd St., Cleveland 10. Ohio GRAHAM. Henry C. 18 N. Erie St.. Mayville. N". Y. GRAHAM, John Warren (Rj 843 Cascade Rd.. Cincinnati 40, Ohio (General Electric Co.) GRANNEN. Edward A. (W) 77 Sheehan Ave., Cincinnati 15. Ohio (Cambridge Tile Mfg. Co.) .GRANT,.Frederic J. (W) 527 W. Seventh S:.. Rm: 303 Los Angeles 14. Calif. (Gran: Ceramic Co.) , GRANT, John F. (I) Box 262. Coming, N. Y. GRAUER. Oscar H. (G) Fischer & Porter Co., Hatboro, Pa. GRAVES. F. E. (S) Lindberg Industrial Corp. 1559 Post Rd.. Fairneld, Conn, i GRAY, Thomas J. (B) Box 814, Alfred. N. Y. (State University of New York, College of Ceramics) GRAY. W. Ashley, Jr. (X) Pioneer Silica Products Co. 3615 C!'ve St. St. Lcuis 3. Mo. GRAY, William T. (G) Leeds 3: Northrup Co. 4901 Ster.ton Ave.. Philadelphia 44, Pa. GRAY3EAL. Byron F. (M) ' American Vermiculite Coi, Inc. Roan Mountain. Tenn. GREAT LAKES FOUNDRY SAND CO. (C. L. Cr'Jtkhank) 720 United A.rtists Bldg. Detroit 25. Mich. | GREEN, A. ?,, FIRE BRICK CO. 1 (William S. Lowe) 1013 E. Breckenridge St., Mexico, Mo. GREEN, A. T. (F) British Ceramic Research Assn. Queen's Rd.. Penkhull Stoke-on-Trent, England GREEN, Daniel K. Box 787, Alfred. N. Y, GREEN, D. T. (S) Milton Brick Co.. Ltd., Box 554 Milton. Ont.. Canada GREEN, John R. (MI) Minneapolis-Honeyweil Reg. Co. Wayne & Windrim Aves. Philadelphia 44, Pa. GREEN, Robert L. (W) Lenox, Inc., Meade St. Trenton. N. J. GREEN. R. S. (BI) 18 S. Jefferson Rd.. Mexico. Mo. (A. P. Green Fire Brick Co.) GREENE. Charles F. (S) 6046 N. Trenholm Rd.. Columbia. S. C. j (Columbia Brick & Tile Co.) GREENE. Charles H. (G) Box 804, Alfred. N. Y. (State University of New York, College of Ceramics) :GREENE, Eleanor L. 4524 17th N. E.. Seattle, Wash. GREENE. J. F. (GF) I 1043 New Pear, Vineland, N. J. | (Kimble Glass Co.) | Vol. 35, No. 10 (1056) GREENFIELD. Jerome <M) Seaboard Chemical Corp. 193 Broadway, New York 33, N. Y. GREENHOUSE. Harold M. (3) Aladdin Radio Industries Nashviiie 2. Tenn. GREENLEE. Charles A. (R) Basic. Inc. 845 Hanna Eldg . Cleveland 15. Ohio GREGER, Herbert H. (W) Trans-Tech., Inc. Box 346. Rockville. Md. GREGORIUS. J. S. (GFI) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22, Pa. GRENIER. Lee (M) Magnet Cove Barium Corp., Box 332 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) GRIFFIN. Thomas W. "La Feuii iee" Trelex Vaud, Switzerland (Hartford Empire Co.) GRIFFIN. William R. (W) Weweamic Shores, Wareham, Mass. (Aerovox Corp.) GRIFFITH. J. Scott (R) 5524 W. Adams St.. Chicago 44, III. (Armour Research Foundation) GRIFFITH, R. E. (R) R.R. 1, Malvern. Pa. (E. J. Lavino it Co.) GRIFFITHS. Norman Nonporite Pty. Ltd. 292-296 Bunvood Rd. Hawthorn E 2. Victoria, Australia GRIGG. Arthur (R) Box 2229. Denver I. Colo. (Denver Brick & Pipe Co.) GRIGG. Paul E. (El) 338 N. Dover Ave.. La Grange Park. 111. (Association of American Railroads) GRIM. Ralph E. (X) Depr. of Geology, Univ. of Illinois Urhana. III. GRIMM, Clayford T. (S) Clay Products 4svic. cf the Southwest 109 Perry-Brooks Bldg., Austin 1, Texas GROBB. F. S. (R) G. F. Sterne it Sons. Ltd. 126 Bruce St.. Brantford. Ont.. Canada GROOME. Garland L. (R) 931 Jeffrey St.. Baltimore 25, Md. (Harbison-Walker Refractories Co.) GROSS. Harold I. (W) Santa Anita Potteries 3117 San Fernando Rd. Los Angeies 65. Calif. GROTHAUS. Joseph V. (R) 2552 E. 76th St.. Chicago 49, III. (United States Steei Corp.) GROVE, Robert L. (WI) 26 Rockland St. South Dartmouth. Mass. (Comeil-Dubilier Elec. Corp.) GRUNER. Max N. (R) Harbison-Waiker Refractories Co. 1325 Ambassador Bldg.. St. Louis I. Mo. GRUVER. Robert M. (G) 1160 Oneida St.. State College. Pa. (Linden Labs.. Inc.) GSCHWIND. Jean F. (M) Ross Midwest Fulton Corp. 918 Woodley Rd.. Dayton 3. Ohio GUERCI. Carl F. (W) 1444 Westgate Dr.. Bethlehem. Pa. (Frenchtown Porcelain Co.) GUGELER. Albert L. (EJ) 3897 W. 33rd St.. Cleveland 9, Ohio (Ferro Corp.) GUIMARAES. Helio Per.tagna Caixa Postal 13:5 Beio Horizonte, 3razil (Magnesita S. A.) GULICX. Chester (Mi Kentucky-Tcr.r.essce Clav Co., Inc. Mayfield, Kv. GULLINGS. LeRay V. < G) 125 Parkway Dr., Wabash. !nd. (American Rock Wool Corp.) GUMMESON. ?. Eg. Hogaras-Bilieshoims Aktiebolag Hoganas, Sweden GUNTHER. F. W. (S) 849 3aker Ave.. N. W. New Philadelphia. Obin (Universal Sewer Pipe Corp.) GUNZENHAUSER. Adolph (M) Industrial Consultant. 69-70 113th St. Forest Hills 75. L. I.. N. Y. GUPTA. Rijes'nwar X. (GJ) 439 S. Division, Ann Arbor. Mich. (University o( Michigan) GUPTA. Subodh C. (GJ) Box 101. Port Jervis. N. Y. (Giilinder Bros., Inc.) GURR. Wiihelm Porzellan-Manufaktur W. Haldenwanger 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 Kerdale Ave.. Apt. 103 Toledo. Ohio (Owens-Illinois) GYWE. Mg Lu Box 216. Alfred, N. Y. H HACK. Walter L. ;W) Western Goid Platinum Co. 525 Harbor Blvc., Belmont, Calif. HACXETT. James W. (G) 3614 Kenwood Blvd., Toledo 6. Ohio (Owens- Illinois) HACKLER. W. C. (WI) North Carolina State College Dept, af Mineral Industries Raleigh. N. C. HADLEY. Robert L. (E) General Electric Co. Major Appiiar.ee Div.. AP 5, Rm. 249 Appliance Pk.. Louisville 1. Ky. HAECKER. Arthur J.. Jr. (R) 1793 Sharon Dr.. Concord. Calif. (Gladding, Mc3ean Co.) HAEGER POTTERIES. INC. (Joseph F. Estes) 7 Maiden Lane Dundee. III. HAERTLING. Gene H. (WJI) 325 Virginia Ave.. Ste. Genevieve, Mo. (Ipseniab of Rockford. Inc.) HAFNER, Harold C. (G) Bausch St 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. (RI) Midwest Research Inst. 425 Volker Blvd., Kansas City 10, Mo IIAGAR, Donald (MFI) Box 323. 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, X. Y. Roster 43 H A G c D 0 R N. z.. C. (G ) Owens-ll!ir.o:s, Technical Center 1700 N. Westwood. Toledo 1. Ohio HAGENAUER. Carl J.1 (G) R.R. I. Sar.-er, Pa.; T Pittsburgh Plate Glass Co.) HAGCLUND. Erik (M) Kantbal Corp., Amelia ?1. Stamford, Conn. HAGLER. J. C.. Jr. (S) Georgia-Carciina Brick it Tile Co. 10 Campbell Bid?., Augusta. Ga. HAGNER. Free F. (G) Phoenix Glass Co.. Moaaca. Pa. HAGY, Henry E. (G) ' Coming Glass Works Laboratory Corning, X. Y. HAHN, William P. (G) 30 Norwood Ave. North Plainfield. N\: J. (Johns--Manville Corp.) HAHNER. CIarer.ee H. (GF) National Bureau of Standards Washington 25. D. C. HALDEN, Frank A. (B) 1133 U'.urel S:., Menlo Park, Calif. (Stanford Research .Institute) HALDY, Norman L, (W) American Encaustic Tiling Co. 1000 Cannon Ave., Lansrialc, Pa. HALE, Arthur R. (M) Aluminum Co. of America 1330 Elmwood .Ave.. Buffalo 7, N. Y. HALEM. Robert G. (WJ) 1571 Undercliff Ave., Bronx 53, N. Y. (Babcock Sc Wilcox Co.) HALL CHINA CO. (John T. Hall) East Liverpool. Ohio HALL. Donald H. 112 3arton S:.. Rochester 11, X. Y. HALL. Douglas E. Box 736. Alfred. X. Y. HALL. E. 3. M/S Bird & Co . Ltd.. Research Dept. Chartered Bank Bldgs. Calcutta. India HALL. Everson (W) Park Way E-xt.. East Liverpool, Ohio (Hail China Co.) , HALL. F P. (Wri Onondaga Ptttrry Co., Electronic Div. Syracuse i. X. V. ! HALL, "antes L. t\V) 242 Oregon Ave.. Palo Alto, Calif. (Thermo-Materiais 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.. rostoria. Ohio (Electric Auto-Lire Co.. Spark Plug Div.) HALLER. Percy 319 Carterknowle Rd.. Sheffield 11, England (John G- Stein Sc Co., Ltd.) HALLER, Wolfgang K. (B) Inst, of Silicate Research University of Toledo, Toledo 6. Ohio HALLETT, Crawford W. (RI) Ceramic Supply Co., Box 106 Crooksville. Ohio HALLO IN, William G. (G) 1218 Broadview Blvd.i Brackenridge. Pa. (Pittsburgh Plate Glass Co.) HALLSE. Robert L. 514 S. Chase Ave., Lombard. III. HALM, Louise Union Francaise des Produits Refractaires. 15. Rue de Milan Paris 9e, France HALVOXIK. Frank V. (G) Brockway Glass Co.. Brockway, Pa. Vol. 35, No. 10 (1956) HAMAKER. M. L. (R) Columbia Fire 3rick Co. 612 First National Bank Bldg. Canton 2. Ohio HAMER. Donald (R) 426 Elmwood. Evanston. III. (Lindbcrg Engineering Co.) HAMILTON. Edgar H. (CD National Bureau of Standards Washington 25. D. C. HAMILTON. Eldon X Coifax. III. HAMILTON. Howard G. 251 Tenth St. N. W., Apt. 104 Atlanta. Ga. HAMILTON. J. C. (G) 3422 Chescnut Hill Rd., Toledo 6, Ohio (Owens-Illinois) HAMILTON. Noble E. (B) 53 Benjamin Rd.. Belmont 78. Mass. (Clevite Transistor Products) HAMILTON. Robert (M) United States Gypsum Co. 300 W. Adams St.. Chicago 6. III. HAMILTON. W. M. (E) Crane Co., Chattanooga Div. 33rd and Alton Park Blvd. Chattanooga 1. Term. HAMME. Donald G. ( 3) National Gypsum Co., Research Center 1650 Military Rd.. Buffalo 17. N. Y. HAMMER. Averill J. (S) Dept, of Chemistry Bowling Green State University Bowling Green, Ohio HAMMER. Gunter 246, Connell's Pt. Rd. South Hurstville, N. S. \V.P Australia (Messrs. R. Fowler Ltd.) HAMMOND LEAD PRODUCTS. INC (William P. Wilke. Ill) 5231 Hohman Ave.. Box 912 Hammond. Tnd. HAMPEL. Richard J. (WJ) 3762 Oxso.a S;.. St. Louis. Mo. (Trenton Potteries Co.) HANCOCK BRICK Sc TILE CO. (James L. Ciiid, Jr.) 3ox 450 Findlay, Ohio HAND. Thomas (R) Corhart Refractories Co. 1600 W. Lee Sr.. Louisviile 10. HANDEN. Jack (GJ) 20 Elmora Ave.. Elizabeth. N. J. (United States Arm'*) Ky. HANDWERK. Joseph H. (B) 915 N. Prairie Ave.. Joliet. III. (Argonne National Laboratory) HANKS. Charles F.. Jr. (M) Kentucky-Tennessee Clay Co., Inc. Box 894, Mt. Union Sra. 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. (GI) Pittsburgh Plate Glass Co. 100 Mississippi Ave. Crystal Citv, Mo. HANNA. Ralph E. (WI> Square D Co., Molded Insulation Div. Peru. Tnd. HANNA. Richard (WJ) Hartford. N. Y. (General Electric Co.) HANNEKEN, Henry P. (G) , Mississippi Glass Co., 88 Angelica St. St. Louis 7, Mo. HANNON, Richard C. (MI) 1208 Franklin Rd., Salem, Ohio (R. T. Vanderbilt Co.. Inc.) HANOVIA CHEMICAL 4 MFC. CO. (R. T. Hopper) One W. Central Ave. East Newark, N. J. HANSARD. W. Carey (WI) 2345 Cheshire Bridge Rd.. N. E. Atlanta, Ga. 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C. HARC0UR7. Edward L. (M) North American Mfg Co. 3810 West St.. Cincinnati 27, Ohio HARDER. Charles M. (DF) State L'niversity ot New York College of Ceramics. Alfred. N. Y. HARDING. John Roy 4 Greenway, Horsham, Sussex. England (Sussex Sc Dorking United Brick Co., Ltd.) HARDINGS CO.. INC. (Harlowe Hardir.ge) York. Pa. HARDINGS. Harlowe (B) Harainge Co.. Inc., York, Pa. HARDY. Ronald G. (SI) Onondaga Brick CoTp., WameTS, N. Y. HARES. George 3. (G) IS Rooseveit S?.. Corning, N. Y. (Coming Glass Works) HARGREAVES. John 33 Eilers 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. (WF) Horizons. Inc.. 2391 E. 79th St. Cleveland 4, Ohio HARNISH. John D., Jr. (WI) , 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 harr. w. ; 1223 3eiro:e, Mayheid Heights. Ohio f Harshaw Chemical Co.) . HARRELL. George O. (Di 3ox 1G07. Sanford. X. fC ( Staniv shaie Products. Inc.) HARRINGTON. Henry W (Cm 1J2 S cane re Ave.. Syracuse 6. X. Y. (Soivay Process Div., Allied Chemical & Dve Corp.) HARRINGTON. Roy V. (GJ 13 3eaver Ave.. R.R. 2 3eaver Dams, N. Y. (Corning Glass Works) HARRIS CLAY CO. (Scroop W\ Enloe, Jr.) Spruce Pine. X. C. HARRIS. George M. (Gi Hasovia Chemical & Mfg. Co. 100 Chestnut St.. Newark 5, X. J. HARRIS. Henry M. (R) 4114 4^r.d S.. Seattle 13. Wash. (U. S Bureau or Mines) HARRIS. James E. (S) 4685 S. Sherman. Denver. Colo. (Robinson Brick TileiCo.) HARRIS^Joe N. (EJ) . 412 Florida Ave. S. E.., Atlanta 16. Ga. (Georgia Institute of Technology) HARRIS. Ransom S. (I) 3ox 695, Newark. Ohio HARRISON, Harold C. (W) 235 Webster Park Ave. Columbus 14, Ohio (Westinghouse Electric Corp.) HARRISON. William B. (BI) 5325 \V. Hadley St. Milwaukee 10, Wise. (Ailis-Chaimers Mfg. Co.) HARRISON. W. N. (EF) , National 3ureau or Standards Ind. 3lcg.f Enameled Metals Sect. Conn. Ave. & Van Ness St.. N. W. Washington 25. D. C. HARSHAW CHEMICAL CO. (Carl Harbert) 19-iS . 97th St.. Cleveland 6. Ohio HART. John M. (W) New Jersey Poreeiair. Co.. Box 908 Trenton 5. N. J. KART, John R. (W 2810 Briggs Ave. Erie. Pa. (Erie Re5istor Corp.) HART. Lerov D. 'R) 707 Crompton Court Webster Groves 19. Mo. (Aluminum Co. of America) HART. Wace J. (GI) 908 Lafayette Court. Marion, Ind. (Radio Corp. of America) HARTFORD. Thomas J. (W) 2783 Doresta Rd.. San Marino, Caiit. (Gladding, Mc3ean 3c Co.) HARTING. Urns 1007 Main. Roila, Mo. , HARTLEY. Alva G. H. Downing St Co. Ltd. Brampton Hill Newcastle. Staffs. England HARTMAN. F. Henry (G.) Stoutfville. Ont.. Canada (Crystal Glass & Plastics Ltd.) HARTSHORN, T. D. (El) A. J. Lindemann 3c Hoverson Co. 601 W. Cleveland Avei Milwaukee 15. 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. HARVEY. Edwin T. (R) 314 W. Me Pike St.. Vandalia, Mo. (Harbison-Walker Refractories Co.) HARVEY. Malcolm R. 30 E. Center St.. Kaysville, Utah Vol. 35. No. 10 (195(i) HASKO, Stephen (WI) 1510 Wheaton Lane. Siiver Spring. MJ (National Bureau of Standards) HASSELBACH, William (G) Libbey-Owens-Fora Glass Co. 1701 E. Broacuny. Toied.- 5. Ohio HASSETT, William A. * W'. Radio Corp. of America Chemical & Physical Lab. 415 S. Fifth St.. Harrison. N. J. HASTINGS, Rusbeli A. < M Lindberg Industrial Corp. 2321 W. Hubbard St.. Chicago 12. ill. HATCH, Robert A. (B) 4135 N. Bcileview Ave. St. Paul 10, Minn. (Minnesota Mining & Mfg. Co.) HATHAWAY, A. J. (R) 8721 Pershing Ave. Niagara Falls. N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) HATHAWAY, Isaac S. ;\V) 1318 Tuttle Ave., Montgomery. Ala (Alabama State College) HATHAWAY. Mrs. V. G. <W) Alabama State College Montgomery, Ala. HAUBEIN, Wendell L. (RJ) 810 Seventh P!., China Lake. Calif. (U. S. Naval Ordnance Test Sta.) HAUCK, Charles A. (RI) 3838 Swinton Ave.. Sepulveda. Calif. (Marquardt Aircraft Co.) HAUSER. Richard E. (I) 351 Moselle St., Buffalo 11. N Y HAUSLER. Elwood B. Box 737. Alfred, N. Y. HAUTH.' Willard .. 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 3c Wilcox Co.) HAWES, Samuei A. (S; 301 N. E. Sixth A\e. Mineral Wells, Texas ( icxeramics Co.) HAWK. Elwin A. (M) Hawk Laboratories. Ir.c.. R.R. I East Rochester. Ohio HAWKINS. Robert J. (SI) 20 Sunnyside PI.. Hamburg, N. Y (Buffalo Brick Corp.) HAWKS. Ralph L (WI) 525 W. Maxweil. 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 St Jacobs Sts., Wheeling, W v- HAZEL, John J. (RF) Republic Bldg.. Rm. 1526 Republic Steel Corp., Qeveiand 1. Oht HAZEN. E. J. (GI) R.R. 2, Ford City, Pa. (Pittsburgh Plate Glass Co.) HEALY, Jaes H. (E) 4511 N. Sherman 3lvd. Milwaukee ?, Wise. (A. O. Smith Corp.) HEATH. Donald L. ( B > Ohio 3rass v_s.. Park i Ninth Barberton. Ohio HEATLEY. Sidney M. ( R i Babcock & Wilcox Co. 105 S. LaSalle St.. Chicago J. III. HECK. Frank G. (R) E. J. Lavino 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.) HEDDEX. Walter A. (R) Batteile Memorial Institute 505 King Ave.. Columbus I, Ohio HEDGES. Lee M (R) R.R. 4, Cedar Grove Rd. Somerville. N. J (Johns-Manville Corp.) HEDGPETH. James A. (S) Borden Brick St Tile Co., Box 1771 Durham, N. C. HEDIN. Claes Olof c/o Malaraalens Tegelbruk Stockholm 3. Sweden HEDQUIST, Alfred J. fW) A.parrado Postal 525 Guadalajara. Jalisco. Mexico (Loza Fina S A.) HEE3NER. John C. (RI) 38 Pierce Rd.t Watertown 72, Mass. (Harvard Business School) HEFTI. Franz Zurcher Ziegcleien. Postfach 357 Zurich I. Switzerland HEIDTMAN. Clarence F. (G) National Lime 3c Stone Co. First National Bank 3ldg. Findlay. Ohio HEILIGMAN. H. A. (RFI) E. J. Lavir.c & Co., Box 29 Norristown, Pa. HEIMSOETH. Werner M. Farbenfabriken Bayer Akriengeseilschaft (22c) Leverkusen-Bayerwerk. Germany HEINDL, Raymond A. (RF) 4917 4jrd St.. N. W. Washington 16. D. C. HEINE. H. W. (S) Hudson Supply 3c Equipment Co. 1727 Pennsylvania Ave.. N. W. Washington 6. D. C. HEISCHMAN. Fred E. (W) 106 S. Adams St.. Fostoria. Ohio (Electric Auto-Lite Co.) HEL3ING. Clarence H. (G) Pittsburgh Plate Giass Co. Fiber Glass Div., Sheibyville. Ind. HELLER. Enrique Vo Cerro de Pasco Corp.La Oroya, Peru HELLIESEN. Richard O. (El) Pemco Corp., 5601 Eastern Ave. Baltimore 24, Md. HELM. David F. (B) Meilon Institute. 4400 Fifth Ave. Pittsburgh 13, Pa. HELMKAMPF, R. N. (G) Laclede-Christy Co. Div. H. K. Porter Co. 2000 Hampton Ave.. St. Louis 10. Mo. HELSER. Perry D. t.WFl) c/o Forrest Clum, Thomville. Ohio (Consultant) HELZ. Armin W. (B) 20 Maryland Ave.. Gaithersburg, Md. (U. S. Geological Survey) HEMBERG. Per Surre Glasswork, Surte, Sweden HEMSTEGER. Samuel E. (El) 4155 Audubon Rd., Detroit 24, Mich. (Pemco Corp.) Roster 4` KEX3Y. . B. i.MJ National Engineering Co. Simp>oa Mix-Muller Div. 549 W. Washington Blvd. Chicago 6. 1 i 1. HENDERSON. Frank ?. M > 5 12 Mockingbird Ln.. Tyier. Texas (Ferro Corp., Allied Engr. Div.) HENDERSON. Frederick C. (WFI) Royal China. Inc., Sebring, Ohio HENDERSON. James L., Jr. (S) Robinson Ventilating Co. Zeiienople, Pa. HENDERSON. William W. (M) Robinson Ventilating Co., Box 217 Zelienople. Pa. , HEXDREN. Robert R. (RI) 105 Bank Ave:, Riverton, N. J. (Hoeganaes Sponge Iron Corp.) HENDRYX, Dwight 3. <S) Dwight B. Hendryx Sc Associates 6621 Darlington Rd.. Pittsburgh 17, Pa. HENKEL. Carl F., Jr. (G) Corning Glass Works, Corning. X. Y. HENRAR. J. M. G. X. V. Porseiein en Tegeifabriek MOSA MAASTRICHT Mccrssenenveg Maastricht, Netherlands HENRY, Edward C. (BFI) 730 Crawford Ave., Syracuse 10, N. Y. (General Electric Co.) HENRY. Frank R. (RF) Simonds Worden White Co. HOI Xegiey PL, Dayton 7, Ohio HENRY, Georges Directeur General a/s Union des Verreries Mecaniques Beiges. 29, Quai de Brabant Charleroi. Belgium HENRY, Kenneth ,M. (Gr) Owens* Illinois I TOO N. Westwood Ave.. Box 10J 5 Toledo 1. Ohio HEXSLER. J. R. (G> Chemical Research Lab. Bausch Sc Lorr.b Optical Co. Rochester 2, N. Y. HENSON, Charles \V. (R) Norton Co., Worcester 5, Mass. KENWOOD, Reginald J. (R) 9*444 Lynnhaven Rd. Cleveland 30, Ohio (Republic Steel Corp.) HEPPLEWHITE. J. W. (WFI) 13557 Cedar Rd., Cleveland IS, Ohio (Ferro Corp.) HERBERT. John S. (S) W. G. 3ush Sc Co.. 174 Third Ave., N. Nashville 3, Tenn. HERBERT. John W. (W) 3523 Anderson Pky, Toledo, Ohio (Brush Electronics Co.) HERBERT. Paul R. (W) Sandvville. Ohio (Stylon Corp.) HERBST. Richard J. 1619 Gimwood Ave., Joliet, III. HERGER. Howard C. (G) Pierce Glass Co.. Port Allegany, Pa. HERKO. Edward (GI) 392 Magee Ave.. Rochester 13. N. Y. (Bausch Sc Lomb Optical Co.) HERMAN, Clarence E. 1 222 Hillcrest Rd., Raleigh, N. C. HERMANN, Gunter Wheaton Do Brasil S.; A. Caixa Postal 1461. Sao Paulo. Brazil HERMANN. James L. (W) 3288 Earlmar Dr. Los Angeles 64, Calif. (Redondo Tile Co.) HEROLD. Paul G. (BFI) Radio Corp. of America Chemical i Physical Lab. Lancaster. Pa. Vol. No. 10 ( IOoG'i HER PEL. Clarence M. (S; Southern Brick & Tile, Inc. Cherokee Station, Box 5 Louisville 5, Xv. HERRON. Robert H. (R) 16J4 N. lrunwood Dr., Soutn Bend, Ir.u. (Bendix Products Div.) HERTZELL. E. A. (S) 1111 Chestnut St.. Dover. Ohio (American Vitrif.ed Products Co.) HESS. B. Parker (G - Westinghouse Electric Corp. 700 3raddock 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.SSINGER, Philip S. (BJI) Mycalex Corp. of America Clifton Blvd., Clifton. N. J. HEUER. Russell P. ( RF) General Refractories Co. 1520 Locust St., Philadelphia 2, Pa. HEWITT. L. C. (RFI) fronton Fire Brick Co., fronton. Ohio HEWLETT. James Thomas (E) Ingram-Richardson, Inc. Frankfort, Ind. HICKS. James C. (BI) 27550 Edgerton Rd.. Los Altos, Calif. (Kaiser Aluminum & Chemical Corp.) HICKS, John F. G. (G) 131 Thompson Dr.. Painted Post, N. Y. (Coming Glass Works) HICKS. Robert G. (E) 60S 21st. Bettendorf, Iowa (Herman Nelson Div., AAF) HIGGINS. Ray fW) 191 Overlook Ave.. Wadsworth. Ohio (Ohio Brass Co.) HIGGINS. Waldo W. lEFI) A. O. Smith Corp. Bex 534. Milwaukee !. Wi-.c. HIGGS. Harold P. (B) Automatic Manufacturing Co. 65 Gouvemeur St., Newark 4. N. J. HfGHLEY. Robert W. (R) Richard C. Remmey Son Co. 2S82 W. Liijerty A.ve. Pittsburgh !6. Pa. HIGMAK. JOHN W.. CO. (Robert J. Stone? 24 State St. New York 4. y HILDEBRAND. David (W) R.R. 3. Hixson. Term. (American Lava Corp.) HILL. David C. Box 787. Alfred. X. Y. HILL. Ercell C. (Sr) 109 Morton Ave.. Apt. 5 Ridley Park. Pa. HII.L. John R. (S) 806 Scenic Dr.. Charleston. W. Va. (Charleston Clay Products Co.) HILL. Lawrence I. fG) 507 Carver 31vd.. Toledo 7. Ohio (I.ibl>ey-0'vens-Ford Glass Co.) HILLING. James L.. Jr. 129 Maple Ave.. Altoona. Pa. HINCKLEY. Arthur T. (R) Oldbury Electro-Chemical Co. Niagara Falls. N. Y. HIND. Stanley "The Mount." Etruria Rd. Bastard. Stoke-on-Trent. England (Consulting Engineer) H1XDES. Stanley V. (M) 88 Union Ave.. Pittsburgh 5. Pa. (Pemco Corp.) HINDS. J. F. (G) Canadian General Electric Co. 221 DmTerin St. Toronto 3. Ont.. Canada HINES. Robert A. (B) 8729 Radley Ct.. Brentwood 17. Mo. (Missouri Portland Cement Co.) HIN XINS, E. A. i G > Tygart Valley Glass Co., 3ox 503 Washington. Pa. HINTZE. Woilmar W :sor. Agaran 12. 3romoJ3a. Sweden t A. 5. Ifovrrkem HIRSSIG. Carl ?. :C 1210 For: Si., Maumee. Ohio c National Lime i Stone Co.) HI3COCK. Harley J. ;R] Fuller Merriam Co . Box 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. (WI) Globe-Union Ir.c., 900 E. Keefe Ave. Milwaukee 1. Wise. HOARE. Henry A. (W) 2655 Sbaronaaie Dr., X. E. Atlanta. Ga. (Georgia Sanitary* Pottery, Inc.) HOBSON, Joe P. (S) Acme Brick Co.. Box 425 Fort Worth 2. Texas HOCH. Arthur E. (Wi Crane-Pacinc Co. 330 W. Citrus St., Colton. Calif. HOCH. Michael (3) University of Cincinnati Dept. Chem. St Me:. Engr. Cincinnati 21. Ohio HOCKING. William J. (W) 1612 Pennsylvania Ave. East Liverpool. Ohio (Hall China Co.) HODGDON. Frank B. (3) Box 4132, X. Chattanooga Sta. Chattanooga 5. Tenn. (Tennessee Products St Chemical Corp.) HODGES. Leslie R., Jr. Box 1409. Atlanta. Ga. HODSON. George N. The Hail. Wymeswoid Nr. Loughborough. England (Hatherrware. Ltd.) HODSON. Jean E. 4203 Brooklyn. Seattle 5. Wash. HOEHL. Joseph W. (E) Wolverine Pcrceiain Enameling Co 3350 Scotters A.ve.. Detroit 10, Mich. HOELSCHER. Max W (E) 5010 Mayfield Rd.. Lynchurst 24, Oliin ( Enamel Products Corp.) HOENIG. Clarence L. , 4325 Lawn Ave.. Western Springs. III. HOEY. Paul E. iS) Texas Vitrified Pipe Co. Box 117. Mineral Wells, Texas HOFFMAN. Sidney C. (G) 1646 Lindy Lane. Lexington. Ky. (Sylvnnia Electric Products. Tnc.) HOFFMAN, Willard H. J. (M) 3 Dungarrie Rd.. Baltimore 28. MH (Ginchiield Sand St Feldspar Corp.) HOFFNER. Jere R. fG) T. C. Wheaton Co.. Millville. N J. HOFSTETTER. C. W. (E) Ferro Corp.. 336-338 N. Central Ave Chicago 44. III. HOGAN. Thomas W. (W) Flinrridge China Co. 350-380 S. Raymond Ave. Pasadena I. Calif. HOGARTH. William.'Jr. Box 3829. Georgia Tech.. Atlanta, Ga. HOGRNDOBLER. H. R. (G) Gustin-Bacon Manufacturing Co. 3031 Fiherglas Rd.. Kansas City. Kans. HOGEXSON. William (E) Chicago Vitreous Corp. 1425 S. 55th Court. Cicero 50. III. HOHMAXN. Frederick R. (G) 1012 Parkview Ave. New Kensington. Pa. (Pittsburgh Plate Glass Co.) Roster 49 HOLADY, Harold W. Box -16, Ephrata. Wash: HOLDEN. Robert 3. ;B) Syivar.ia Electric Products , Atorr.ic Energy D:v Box 59. 3ays:de. X Y. HOLDEXER. Irwin K. ; E; = 5389 Baystce Dr., Dayton 3. Ohio i Wright- Patterson A r 3) HOLL. Barton A. ('5 Logar. Clay Products Co. Box 698, Lcgan. Ohio HOLL, Bartor. S. iST' 311 W. Front 5:.. Logan,.Ohio (Logan Clay Products Co.) HOLLEY. Kenneth E. ; R1 113 Pritchard Avc., Corning. N. Y. (Coming Glass Works) HOLMES, Gregory J. ' Rutger^ University. 3ox -15 New Brunsuick. N. J. HOLMES. Lyle A. (M) 82 Pilgrim P.d.. Rosslyn Farms Carnegie, Pa. (Great Lakes Foundry Sand Co ) HOLMES. Roland G. <S) -W. S. Dickey Clay Mfg. Co.. Boxj402 Pittsburg, Kans. HOLMSTROM. Joseph H. (RI) 11211 Washburn Ave., S. Bloomington 20, Minn. (General Refractories Co.) HOLSCHER, H. H. (Gr) ; Owens-Illinois Box 1035, Toledo 1, Ohio HOLST, Tage i Vinkeivej !o. Konger.s Lyngby. Denmark | (Porceiaenstabriker. Danmark A/S) IhOLTERHOFF, a. Gray (M) National Saies Corp. 307 E. Fourth St.. Cincinnati 2, Ohio i HOLZMAN. George R (G; Mellon Institute. *-*00 Filth Ave. Pittsourgn :3, ?a. ! HOMMEL. E. M. (EEO. Hommei Co.. Bex 475 Pittsburgh 30, ?a. ; HOMMEL, O.. CO. (E. M. Hommei) Box 475, Pittsburgh 50, ?a. ! HOM VELD. G. H. A. Av. La Coiirta. Quinta "Alicia'' Los Chaguaramos Caracas. Venezuela HONSBERG. Werner (W) Apartado 508. Mexico D. F., Mexico (Fabrica de Loza El Anfora. S. A.) HOOD. Clyde (G) Leeds 4 Northrup Co. 1922 E. :07:h St. Cleveland 5, Ohio I HOOD, Harrison ?. (GF) 260 Delevan Ave.. Coming. N. Y. (Coming Glass Works) " HOOD. L. Scot: (I)_ Orton Ceramic roundation 1445 Summit St., Coiumbus. Ohio HOOP. M. C. v. d. N. V. Royal Delft Ware Manufactory, "De Porceleyne Fles" v/h Joost Thoott Sc Labouchere 196 Rotterdamscfaeweg, Delft. Holland HOOPER. Bradford (R) 5 Point O'Woods Lane, Darien, Conn. (Babcock Sc Wilcox Co.); HOOTON, Norris A. Box 567, Clemson, S. C. HOOVER. Charles H. (R) 609 Wilton Rd.. Towson 4, Md. (General Refractories Co.) HOPKINS. Robert W. (GI) " - Calumite Co., Box 151 Hamilton, Ohio HOPPER. R. T. (D) Hanovia Chemical Sc Mfg. Co. 1 W. Central Ave., East Newark, N. J. HORAK. Wiikam <RFii 223 Ravir.ond Rd. West Hartford 7, Conn. (Hartford Empire Div . . Emhart Mfg. Co.) HORXER. M. Harlan 4757 I7th X. . St.. Seattle i, Wash. HORNING. Roy A. (GFI i Armstrong Cork Co.. Lancaster. Pa. HORXUNG. Martin R (WI) 140 E. Sheridan Ave . New Castle. Pa (Shenango China. Ire.) HORTON. Paul B. ( WI) Insulator Dept.. General Electric Co. Box 57. Baltimore 3. Md. HOSBEIN. Roger L. {R) 13 Standish St.. Frostburg, Md. (3ig Savage Refractories Div.) HOSSENLOPP, Arthur M. (WI) 921 Maplewood Dr., Kokomo. Ind. (Delco Radio Div.. General Motors Corp.) HOSTETTER, J. C. (GFI) 1561 Dale Ave., Winter 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 Clay Machinery Co ) HOUGHTON. Armory (G) The Knoll, Corning, N. Y (Corning Glass Works) HOULAHAN. R. C. (S) Builders Brick Co. 3800 Ninth Ave., S., Seattle. Wash. HOUSE. Roger L. Box 787, Alfred, N. Y. HOUSMAN. George S. (R) Box 17, Norristown. Pa HOUSTON, M. Dean 507 Linden Rd., State College. Pa. HOUZE, Armand L.. Jr. (G) Houte Glass Ccrp.. Point Marion. Pa. HOWARD, Harold B. 828 S. Ellis St., Salisbury, N. C. HOWAT. Walter L. IDF) Walter Howat Decorative Ceramics 85 Hopping Ave., Staten Island 7, N. Y. HOWATSON. John (G) University of Wyoming Chemistry Dept.. Laramie, Wyo. HOWATT. Glenn (W) Bldg. 6-5. Apt. 3. Redfieid Village Metuchen, N. J. (Glenco Corp.) HOWE. Elroy E. (Erl) Chicago Vitreous Corp. 1425 S. 55th Court, Cicero 50, III. HOWER. Lawrence D.. Jr. (RI) Rayoestos Div.. 75 E. Main St. Stratford. Conn. ' HOWER. R. S. (BI) AIlen-Bradley Co. 136 W. Greenfield Ave. Milwaukee 4, Wise. HOWIE. Thomas W. Campbell 3c Co. (Roughcastle) Ltd. Roughcastle Works. Falkirk, Scotland HOYET, Eugene (G) R. R. 2, 3ox 332, larentum, Pa. (Pittsburgh Plate Glass Co.) HSU, Ku-hua 1, King's Terrace, 1st Floor Kowloon. Hongkong, B.C.C. (Kiu Foong Enamei 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. Vol. 35, No. 10 (1956) HUBER-WARCO CO. AMERICAN CLAY MACHINERY DIV., Sucyrus. Ohio HUDSON, Charles J { R ) "4 Newton St.. '.Vest Bovistcn, Mass. HUDSON SUPPLY 4 EQUIPMENT CO. (H. W. Hr.r.tJ 1727 Pennsylvania Ave.. N W Washington 6. D. C. HUE77IG. Fred R ;WI) 296 3rook Ave. North Plair.neld. X. J. i General Ceramics Carp.) HUFrCUT, Harold W. (G) V estinghouse Electric Cory Electronic Tube Div., Box 234 Elmira. N. Y. HUGHES. George B. (E) 236 Indiana .Ave.. Dayton 10, Ohin (Frigidaire Div., General Motors Corp.) HUGHES, Walter M. (WI) 534 Purr.ara Ave., Zanesville. Ohio (Chicago Standard Transformer Corp.) HUGHEY. Vaughn V. (B) Basic, Ir.c., Mapie Grove, Ohio HUI. William L. C. (B) Radio Corp. of America. Tube I'iv. Marion, Ind. HUKE. Frank 3. :R) Norton Co.. One New Bond St. Worcester, Mass. HULL, J. Brannon (W) Hull Pottery Co., 327 Amerine St Crooksviile. Ohio HULL POTTERY CO. (J. Brannon Hull) 327 Amerine Si. Crooksviile, Ohio HULSE, Charles O. 22*0 Dwight Wav, Berkeley 4, Caiif. HUMEXIK. Michaei.'Jr. (B) 23477 Parkwcod Dr.. Inkster, Mich. (Ford Motor Co.) HUMMEL. Floyd A. (B) College of Mineral Industries Pennsylvania State University University Dark. ?a. HUMMEL. Richard (C) 615 Olympia Rd.. Pittsburgh 11, Pn. (Harshaw Chemical Co.) HUMMEL. Roy f \V} 4313 Grar.tley Rd., Toledo 13, Ohte (Champion Spark Plug Co.) HUMPHREY. Richard A. (W) Mycaiex Corp. of America Box 311. Clifton. N. J. HTJMPHRYZS MANUFACTURING CO. (D. J. Jones) 201 E. Fifth St. Mansfield. Ohio KUND. George J. iW) 227 Toplar Ave. N. W.. Canton, Ohio (Sparta Ceramics Co.) HUND. Raloh (R) Speer Carbon Co., Theresia St. St. Marvs. Pa. HUNGERFORD. R. M. (X) Cayburn Co.. Ltd.. 350 W. Hastings St. Vancouver 9. B. C.. Canada HUNT. Charles W. (W) 154 Vincent St.. Chagrin Falls, Ohio (Certain-Teed Products Corp.) HUNT. Herbert J. (G) Kimble Glass Co.. Vineland. N. J HUNT. John F. (MI) Carpco Engineering 4 Manufacturing Co. Jacksonville, Fla. HUNTER. Charles E. (M) Box 430, Erwin. Tenn. (Consolidated Feldspar Dept., International Minerals & Chemical Corp.) HUNTING. Everett C. (GI) 2030 Grove St., Berkeley 4, Calif. (Microchemical Specialties Co.) HUPPERT. Paul A. (El) 414 Randolph Rd., Plainfield, N. J. (General Ceramics Corp.) HURD, Burgess M. (W) 3 Windy Crest Rd.. Beaver Falls, Pa. (Ceramic Color Sc Chem. Mfg. Co.) Roster 51 | HURLEY, Haber: E. (3) 469 Camden Ave. Mooresiov'n. Burlington County. N. J. (RCA Victor) ; HURLEY. T. ?. (3) iyraij'uc Electric Co. North Adams. Moss. HURST, Erwin J. (W) General Ceramics Corp. Plant 2, Research Dept. Keasbey, N. J. KL'RST. The mas L. (R) ' Monsanto Chemical Co. Everet: Sta., Boston 49, Mass. HUTCHINS. John R.. Ill Massachusetts Institute of Technology Rtn. 4-051. 77 Massachusetts Ave. Cambridge 39, Mass. ' HUTCHISON. Clark (EFI) 709 E. Armstrong St., Frankfort. Ind. (Ingram Richardson, Inc.) HUTCHISON. R. C. (RI) 2133 Newton Ave.. Bethlehem, Pa. (Bethlehem Steei Co.) i: HUTT. Glenn A. tEF) 196-9 Scottsdale Blvd. Shaker Heights 22, Ohio I (Ferro Corp.) | MUTT. Gordon M. (R) Canadian Pacific Railway 703 Windsor Station Montreal 3, Que., Canada IIUYCK, L. G. (E) Huyck Construction Col 1861 DeCook Ave., Park Ridge. III. HYATT, Edmond P. 3499 Fleetwood Dr. Sait Lake City 9, Utah ! HYDE. Coilin (RI) 581 Oxford St., Worthington. Ohio i (Battelle Memorial Institute) j HYLAND. J. A. (E) Pacihc Coast Borax Co; 3456 \Y Peterson Ave., Chicago 4*. 111. HYNES. Frank J. (WI) Oxbow Rd., Wayiand. Mass. (Raytheon 'Mfg. Co.) HYOLLE. Andre Societe Generale dc Carreiages 37, rue Leon Blum 1 Feign:es (Nord), France MYSLOP. Joseph F. "Drontore," Major's Loan Falkirk. Scotland (J. G. Stem 3c Co.. Ltd.) I IAXDER. J. Richard (M) Ceramic Sews, 509 S. Beverly Dr. 3everly Hiils, Calif. ICHIKAWA. Yoshio (W) 1 1903 Hanover St-. Apt. 10 Pittsburgh 13. Pa. (W'estinghouse Electric Corp.) JHRIG. Allen C. (G) 127 Corning Blvd.. Corning, N. Y. (Coming Glass Works) ILES. Ramon R. (G) 2223 St. James Ct.. Owensboro, Ky. (General Electric Co.) ILIFF. Fred K. (W) Harshaw Chemical Co. Jackson -Sc Swanson Sts. Philadelphia 48. Pa. ILLING. Amo M. (W) 5412 Laconia. Cincinnati 27, Ohio (Cambridge Tile Mfg. Co.) ILLINOIS CLAY PRODUCTS CO. (Howard F. West) 68 N. Chicago St. Joliet. 111. | ILLYN. Alexis V. I 18J Bevier Rd.. University Heights New Brunswick. N. J. , INfHOFF, Edward J. (M) :: United States Glass Co. Glassport. Pa. 1 I IMMEDTATO. Robert R. (WI) Sprague Electric Co.. Nashua. X. H. Vol. 3o, No. 10 (10f>f>) INDIAN CERAMIC SOCIETY (H. N. Roy) Depc. of Ceramics Benares Hindu Un:\\. Benares. India INDIANA GLASS CO. Dunkirk, Ind. INDUSTRIAL CERAMIC PRODUCTS. INC. *.C. R. Oberst) 965 W. Fifth Av*.. Columbus 8, Ohio INGERSOLL. Harry (', 455 S. Catalina S:. Los Angeies 5, Calif. ( Pernco Corp.) INGHAM. David (W) Box 546. Kittanning, Pa. (Eljer Division) INGRAM-RICHARDSON. INC. (R. H. Coin) JerTerson 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 FRANCAISE (Louis Desmarquest) 6 Grande-Rue Sevres (S. & O.). France Insulator--See General Electric Co. INTERNATIONAL CLAY MACHINERY CO. (R. H. McEIroy) 1145 Bolander Ave.. Davton 1, Ohio INTERNATIONAL COMMISSION ON GLASS (B. P. Duddir.g) Research Laboratories General Electric Co.. Ltd. Wembley. Middlesex. England IRLAND, David L. Box 787. Alfred, N. Y. IRONTON FIRE BRICK CO. (J. H. Rickey, Jr.) Box 536 Tronton. Ohio IROQUOIS CHINA CO. (Robert E. Anderson) 2320 Milton Ave.. Svracuse 9. N. Y. IRVINE. George C. (WI) Canadian Carborundum Co.. Ltd. Niagara Falls. Ont.. Canada IRWIN. Joseph T. (E) 1613 Elmwood Ave., Lakewood 7, Ohio (Consultant) IRWIN. Philip P. (\V) Potters Supply Co. East Liverpool. Ohio IRWIN. William W. (W) Potters Supply Co. 11 Washington St., East Liverpool, Ohio ISAACS. Richard ?. (M) 78 Elmwood Dr.. Livingston. N J (Hammill 3c Gillespie. Inc.) ISAGAWA. Jun Nippon Toki Kaisba. Ltd. -- 1, Noritakeshinmacht. Ni&hiku Nagoya, Japan ISELIX. Charles W. (GJ) Thatcher Glass Manufacturing Co. Elmira. N. Y. ISENHOUR. C. W.. Jr. (S) Isenhour Brick St Tiie Co.. Bo* 1249 Salisbury, N. C. ISENHOUR. John H. (Sr) 215 Confederate Ave.. Salisbury, X. C. (Isenhour Brick St Tile Co.) ITO. Shozo Nippon Gaishi Kaisha. Ltd. 1, 2-Chome. Horita-dori, Mizuho-kn Nagoya, Japan ITSCHNER. Robert Tannenrauchstrasse 106 Zurich 38. Switzerland (Tonwerke Thayngen AG) IVES. John B. (RI) 18 Standish St., Frostburg. Md. (Big Savage Refractories Div.) IVEY. J. Ray (S) Acme Brick Co. R.R. 1. Millsap, Texas JA3BUSCH. Arthur J. (S) Pomona Terra-Cotta Co. Greensboro, N. C. JACKSON, A. Curtis (Sri) Robinson 3rick & Tile Co. 500 5. Santa re Dr , Denver, Colo. JACKSON, James A v o r. h a c gh. 5:o n eh o u se Lanarkshire, Scotland JACKSON, Mary A. 486 Bovr.ton Ave.. Berkeley 7, Calif. JACKSON TILE MFG. CO. (R. T. Lowrance) Box 2006 Jackson, Miss. JACKSON VITRIFIED CHINA CO. (Phitip R. Distillator) 2 West St. Pelham Manor 65, N. Y. JACKSON, Wharton (M) Wharton Jackson Co. 475 Huntington Dr. San Marino 9, Calif. JACKSON. William M.. II (W) 13 Maura Dr., Woburn, Mass. (Godfrey L. Cabot. Inc.) JACOB. Bernard T. (RI) National Crucible Co. Mermaid Lane 3c Queen St. Philadelphia 13, Pa. JACOBI. James H. ;E) Avco Manufacturing Corp. Croslcy-Ber.aix Home Appliances Div. Dept. 4/4, Nashville 1. Tenn. JACOBS. Charles W. F. (W) 19 A Longmeadow Rd. Eggertsville 23, N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) JACOBS. H. Box 117, Vereentging Transvaal. South Africa JACOBS. Louis J. (R) . Ramtite Cc.. 2563 W. 13th St. Chicago 2. III. JACOBS. Richard A. (G) Brockway Glass Co., Inc. Brockwav. Pa. JACOBSON. Ed (E) Maytag Co.. Newton. Iowa JACOBY. William R241 Upson Lane, University Heights New Brunswick. N. J. JAFrE. 3err.ard (31) 4238 Hinsdale Rd. South Euclid 21. Ohio (Cevite Research Center) JAMESON. Robert J. (G) Libbey-Owens-Ford Glass Co. 1701 E. 3roadway, Toledo 5, Ohio JAMISON. C. Donald. Jr. (R) Koppers Co.. Inc.. Eng. St Const. Div Koppers Bldg., Pittsburgh 19, Pa. JANKE. Charles E. (S) 4633 Horton Rd. Garfield Heights 25. Ohio (Cleveland 3uiiders Supply Co.) JANKOWSKI. Charles R. 16 Hakes Ave., Homeil, N. Y. JANSEN. Gerard F. Box 2517. Georgia Tech., Atlanta, Ga. JANSMA. Frank (M) B. F. Drakenfeld 3c 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, 1331 Race St. Philadelphia 7, Pa. JELINEK. James W. (BJI) 1203 Seventh Ave.. Marion. Iowa JENKS. C. E. (B) W. S. Tyler Co. 3615 Superior Ave., N. E. Cleveland 14. Ohio Roster .itf JENNINGS. James W. (E) Quaker Silver Co., Inc. North Attleboro, Mass. JENSEN, Edwin (E) 112:5 Minden Avc , Detroit 5, Mich. ( Brisks Mfg. Co.) JENSEN, Robert 0. (S) Natco Corp., Wavnesburg, Ohio JEPPSON, George N. (RF) Norton Co., One New Bond St. Worcester 6. Mass, i JERO, Parker (E) 932 Birchwood Dr., Washington, 111. (Caterpillar Tractor Co.) JERVIS, Juliaa S. ` 750 Fowler St. N. \V., Atlanta, Ga. JHUNJHUNWALA. K. P. (J) Orissa Industries, Ltd., P. O. Barang Dist. Cuttack, Orissa, Iodia JIMMERSON, James E.;|(S) Henderson Clay Products, Box 870 Henderson, Texas JOHNS-MANVILLE SALES CORP. (J. C. Crawford, Jr.) 22 E. 40th St. New York 16. N. Y. JOHNS. William V. (W) Shenango China Inc., New Castle, Pa. JOHNSON. Alexander H. H. L. Brisbane 2c Wunderlich Ltd. Lord St., East Perth, West Australia JOHNSON. Alton E. (WI) 4903 N. 53rd St.. Milwaukee, Wise. (Globe-Union, Inc.) JOHNSON, A. L. (WF) Universal-Rundle Corp. W. Keith McAfee Lab., Box 1268 Mahoningtown, Pa. JOHNSON, A. M. (R) |; Ross-Tacony Crucible Co. Robbins Sc Milnor Sts. Philadelphia 35. Pa. JOHNSON. Ben (SJ) 5224 Valley Oak Dr.; Austin 3, Texas (University of Texas) JOHNSON. Boyd M. ,R) Carborundum Co.. Box 263 Perth -Arabov, Ni J. JOHNSON. Bruce M. 353 Highland Dr.. Seattle 9, Wash. JOHNSON, David M. fBJ) 510 Southland Blvd.. Louisviiie 14. K>\ (Corhart Refractories Co., Inc.) JOHNSON. Dudley B. (Z) Glascote Products. Inc. 20900 St. Clair Ave.. Cleveland 17. Chio JOHNSON, Earle K. (SY Eureka 3rick Sc Tile Co. Box 338, Clarksville, Ark. JOHNSON. E-win L. 1107 W. Green St., Apt. 225 Urbana. I!!. JOHNSON, Fred H.. Jr. (S) Summitville, Ohio (Summitvtlle Face Brick Co.) JOHNSON. George E.. Jr! (RI) North American Refractories Co. Curwensville. Pa. JOHNSON. Gordon H. (E) 24188 Gessner Rd. North Olmstead, Ohio (Ferro Corp.) JOHNSON, Harold C. (G) Coming Glass Works Coming. N. Y. JOHNSON. J. A. Progress Engineers, Ltd., Leek New Rd. Cobridge, Burslem Stoke-on-Trent. England JOHNSON. James E. (WJI) 3173 Herrick Rd.. Columbus, Ohio (United States Air Force) JOHNSON, James R. (BI> 4 Oak Knoll Dr. White Bear Lake 10. Minn. (Minnesota Mining Sc Mfg. Co.) JOHNSON. 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, LcRoy a. (hi: 1206 Cleveland 5c.. Evar.stcn. 111. (Chicago Vitreous Corp.) JOHNSON, Norman \Y. ;R' Eaton Manufacturing Co. 9771 French Rd.. Detroit, Mich. JOHNSON. Paul V. (Sr) Structural Clay Products Research Foundation, Geneva, 111. JOHNSON. William A. (E) 7269 Greenleaf 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. Roben 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) Humphry^* Mfg. Co. 201 E. Fifth Sr.. Mansfield, Ohio JONES. Frank L. (G) Koppers Co.. Inc.. Box 123. Verona, Pa. JONES, George A. (W) 3411 Central Ave.. Parkersburg. W. Va. (United States Ceramic Tile Co.) JONES. Glen A. (B) Shreve Manufacturing Co., Shreve. Ohio JONES. Howard E.. Jr. (R) 19150 Robson. Detroit 55. Mich. (Jones-Mundle & Co.) JONES. Maynard J. (E) Pfimiler Co.. -V.-s: Ave. Rochester II. 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 3. (W) National Tile Si Manufacturing Co. 1200 E. 26th St.. Anderson. Inti. JONES, Richard E. (R) Pittsburgh Plate Glass Co. Research Laboratory, Creighton, Pa. JONES, Robert O. (R) Standard Slag Co. Box 3. Gahbs. Nev JONES. Roger D. (R) 28 Cushing PI.. Buffalo 20, W Y. (Electro Refractories Sc Abrasives Corp.) JONTZ. Melvin L. (M) 5028 Alhambra Ave. Los Angeles 32, Calif. (Melvin L. Jontz Co.) JORDAN. John N. (G) Consumers Glass Co. Ltd. Box 456. Station B. Montreal, Que.. Canada JORDAN. John W. (M) Baroid Div.. National Lead Co. Box 1675, Houston l. Texas JORDAN. R. E.. Jr. (W) Mosaic Tile Co.. Zanesville, Ohio JORDAN. Thomas B. (S) Mosaic Tile Co., 329 N. Highland Ave. Hollywood 38, Calif. JOVA BRICK WORKS (J. L. Jova) Roscton, N. Y. JOVA, J. L. (S) Jova Brick Works. Roseton, N. Y. JOYNER. Bobby L. (W) Erie Resistor Corp.. C.44 \V. 12th St. Erie, Pa. JUDKINS. Robert \\\ (W> Wilbur 3. Driver Co. 1375 McCarter H-.vy., Newark -i. N. J. JUELSS, Davie (Ml American Lead Pencil Co. 500 Willow Ave.. Hoboken, N. j. K KACICZ. Joseph M.. Jr. 210 Clinton Rd.. Wes: Caldwell, N. J. KADEY. Frederic L.. Jr. (B) 1825 Quimoy Lane, Westfield. N. J. (Johns*Manvilie 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 Sr.. Maumee, Ohio (Libbev-Owens-Ford Glass Co.) KAISER. William E. 3103 Bellwood C:.. Apt. 11 Columbus. Ohio KALLUP. Charles. Jr. (WI) Helipoc Corp.. 916 Meridian Ave. South Pasadena. Calif. KALMAN. Frank R. (El) 2014 Baxterly Rd., Lakewood 7, Ohio (Pemco Corp.) KALMBACH. William J. (C) Kimble Glass Co. 1700 N. Westwood Ave., Toledo, Ohio KALOUSEK, George L. (G) 2633 Merrim.ac Blvd., Toledo 6, Ohio (Owens-Illinois) KAMICH. Barnet Z. (3) 11 Garwood St.. South River, N. J. (Army Ordnance Corps) KAMLER. Anthony R. 713 Seventh Ave.. Ford City. Pa. KANAZAWA. Edward 12333 Sylvan it. North Hollvwood. Calif. KANE. John L.' iW) 3457 Wicklow Ave . Cincinnati 36. Ohio (Cincinnati Milling Machine Co.) KAN70R. Neil I. <W) 198 Mason Dr . Metuchen, N. J. (Crowley Div., Aerovox Corp.) KAPADIA. Hiimi 'El 202`/j N. Fourth St.. Niles, Mich. (Kawnecr Co ) karkhanavala. m. d. 239. Botawaia 3ldg.. Tardeo Bombay 7. India (Atomic Energy Commission) KARNAS. John S. 718 Echo Ave.. Zanesville. Ohio KASSEL. Robert W) Lenox, Inc.. Pomona, N. J. KASSEES. John S. (B) American Testing Lab.. Tnc. Box 1421. Lancaster, Pa. KAST. Edward T. Box 847. Alfred. N. Y. KASTEN. Vernon L. (WI) Three Oaks. Box 84. Jackson, Mo. (Ceramo Co. Inc.) KASTENBEIN. Ernest L. (W) 100 E. Van Ness Ave.. Rutherford, N. J. (Tile Council of America) KATZ. Joseph M. (WI) 625 E. Fifth St.. Brooklyn 18, N, Y. KATZ. Sigmund (E) Orange Ceramic Lab. 17 Kcnz Terrace. West Orange, N. J. KAUFFMAN, John R. (MFI) 160 Fairview Ave.. Elmhurst, III. (Tuttle Sc Kift, Inc., Subsidiary Ferro Corp.) KAUFFMANN. Otto T. (\V) Fronrenac Floor & Wall Tile Ltd. Kingston. Ont.. Canada KAUTZ. Karl (EFI) 24 Leon Rd.. Pittsburgh 20, Pa. (Vitro Mfg. Co.) Roster 55 KAY. William T. (R) E. J. 3ar:c;ls Co. 1212 Sixth Ave.. S.. Seattle 4. Wash. KAYSER, Julius A. (R) Gladding, Mc3ean : Co. -901 Los Feii; 3lvd. Los Angeles J9. Caiif. KEAXEY, J. C. {G\ 1201 Banksviile Rd.. Pittsburgh 16. Pa. (National Lime 3c Stone Co.) KEANEY. Joseph C., Jr. (G) Feldspar Corp.. 1201 Qanksviile Rd. Pittsburgh 16, Pa. KEANEY, Robert C. (G) St. Lawrence Fluorspar, Inc. 1201 Banksville Rd.. Pittsburgh 16, Pa. KEARNEY, John P. (G1 2723 Densmore Dr., Toledo 6, Ohio (Kimble Glass Co.) KE3LER, Leonard (E) Ward Leonard Electric Co. Mt. Verr.on, N. Y. KEEFE. Robert M. (R) 133 Puritan Rd., Plymouth Meering, Pa. (Mullite Refractories Co.) KEEFER, George E. (G) Owens-Illinois, Technical Center 17C0 N. Westwood Ave. Toledo 1, Ohio KEENER, Harry T. R. R. 3, htinerva, Ohio KEHL. Nelson H. t'RI) E. J. Lavino 3c Co. Box 29, Norristown, Pa. KEIM. Laurence A. (G) 1*M Cochran Rd., Pittsburgh 2S, Pa. (Pittsburgh Plate Glass Co.) KEITH. Miss L. C. Canadian Ceramic Society 49 Turner Rd. Toronto 10. Ont., Canada KEITH. Wencerl P. (RI) 1234 E. Marvista St.. Whittier. Calif. (W. P. Keith Co.) KELLER. Francis Pfungen. Switzerland (Kei'er 3c Cie. A.G.) KELLER, George W. (G) Owens-Illinois 1700 X. Westwood Ave.. Toledo 7, Ohio KELLY. Austin J. (E) Gucipn Stove Co.. Ltd.. York Rd. Gueiph, On:., Canada KELLY. Ceorge D. iZ) 1100 Dublin Rd.. Columbus 12, Ohio (Battelle Memorial Institute) KELLY, Hal J. (R) 6025 52r.d N. E.. Seattle 5. Wash. (L\ S. 3urtau of Mines) KELLY. John V. fR) Kaiser Steel Corp. Box 217, Fontana, Calif. KELLY. Joseph F. (R) 301 Braddock Ave.. Lansdowne. Pa. (Naval Boiler 3c Turbine Lab.) KELLY. William J. f\VI) Box 265, Hondo. Texas (Universal-Rundle Corp.) KELSEY, V. V. (MF) Dominion Minerals Div., Riverton Lime 3c Stone Co., tnc. Piney River, Va. KELTON, Stanton C. Jr. (G) Rohm 3c Haas Co., 3ristol. Pa. KEMP, John A.. Jr. (W) 1414*A Hickory Ave.. Torrance. Calif. (American-Standard) KEMPF, William C. (RI) 23 Homer Pi.. Mctuchcn. N. J. (Carborundum Co.) KENAGY. Lloyd N. (RJ) Claysburg. Pa. (General Refractories Co.) KENAGY, William L. (RFI) 770 Fetters Mill Rd. Huntingdon Valley, Pa. (Simonds Abrasive Co.) Vol. 3"), No. 10 (Il)o(3) KENDALL. Thomas A. (Si University of Kentucky College of Eng.. Lexington. Kv KENDRICK. Thomas 3. (Cl Lancaster Lens Co. 220-225 W. Main St., Lancaster. Ohio KENNEDY. Richard W (\V) Star Porcelain Co. Box 1329, Trenton 7, X. J. KENT, Joseph P. (WI) 247 Starr St.. Brooklyn 37, N. Y. (Levitor. Mfg. Co.. Inc.) KENT. N. Johnson (RI) Johns-Manvilie Sales Corp. 22 E. 40th St.. New York 16, N. Y KENT. William 3. (MI) 115 W. Main St., Apt. 4 Alliance. Ohio (Kentucky-Tennessee Clay Co.. Inc.) KENTUCKY CLAY MINING CO (W. J. Watkins) MavhrU. Kv KENTUCKY-TENNESSEE CLAY CO.. INC. (Chester Gulick) Mayrield. Ky. KEN WORTHY. Orville Of 3) I486 Arthur Ave.. Lakewood 7. Ohio (Ferro Corp.) KENYON. Clark (W) Frenchrown Porcelain Co. Frenchtown, N. J. KEPKA. George M. (MI) Braun Corp.. 1362 S. Bonnie Beach PL Los Angeies 54. Calif. KEPLINGER. Robert B. (RFI) Carroll Clay Co. Box 56. Carrollton. Ohio KERINS. M. P., Jr. <E) Stauffer Chemical Co. J80 Madison Ave., New York, N. Y. KERLA. Hans (R) 525 Beaumont Ave., Baltimore 12, Md. (Kerloiri Corp.) KERPER. Matthew J. (Bl) National Bureau of Standards Div. .2. Y/ashington 25. D. C. KERR. Charies H. (GF) 2361 Chatsworth Blvd. San Diego 6. Calif KERR. John M. 223 X. Purdue. Apt. 109 Oak Ridge. Tenn. KERR. W. Raymond (RFI) Armstrong Cork Co. Box 441. Beaver Falls, Pa. KERSKNER. William G. (WI) 117 S. Nth St.. Olean. Y. (Olean Tile Co.) KESN 1, James R. 8610 44th Ave.. S.. Seattle 13. Wash. KESSEL. David J. 902 W. Green. Urbana. 111. KESTER. Ralph G. (G) 1294 June Dr., Maumee. Ohio (Kimble Glass Div., Owens-Illinois) KIBLER. H. W. (W) Southern Potteries. Inc. Box 279, Erwin, Tenn. KIEHL. Harry R. (G) 222 Chemung St., Coming, N Y. (Coming Glaas Works) K1ESOW. Paul F. (G) Forest Hills Dr., Elmira. N. Y. (Westingbouse Electric Corp.) KILCOYNE. John R. (W) Canadian Porcelain Co. Ltd. Box 428, Hamilton. Ont.. Canada KILGORE CERAMICS CORP. (D. H. Wailcup) Box 1619 Kilgore. Texas KILLllAR. Henry M. (RI) 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. KIM, You S. North Carolina State College Box 3540. Raleigh. N. C. KI.M3LE GLASS CO. (K. R. 3lack) 1700 N. Westwood Ave., Toietio. Ohio KING. 3-Jrnha.m \\\. Jr. (EFI) 2234 Lane Rd., Coiumbus 14, Ohio (3ar.el!e Memorial Institute! KING. Charles 3. (G) 189 Cedar 5:.. Coming, N. Y. (Coming Glass Works) KING. Harr.- M. (MJ) aJ9 Washington ?!., Sycamore. lil. t Corps ot Engineers, U. S. Armv) KING. R. M. (E.-I) Lord Hall, Ohio State Univ. Columbus 10, Ohio KING. Robert G. (W) 142 N. Center S:.. Grove City. Pa. (Vitro Mfg. Co.) KING. Robert M. 307 S. Victor. Champaign. III. KING. Walter F. (M) 265 Arborlea Ave., Morrisville. Pa (Shenandoah Silica Co. Inc.) KINGERY. W. D. (B) Ceramics Div., Mass. Inst, of Tech Cambridge, Mass. KINSMAN, 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) Eisencerg/Pfalz Tieienthalerstr 16. Germany (Messr. Didier--Werke A.G.) KIRCHNER. Henry P.. Jr. (B) Corning Glass Works. Coming. N Y KTRKENDALZ. G_ A. (I) c/o American Embassy Tel-Aviv. (Mail Room) Dept. o( State Washington 23. D. C. KIRKPATRICK. Frank (WFI) S40 Strand. Hcrmosa Beach. Cuiif. (Gladding. Mc3ean 4 Co.) KIRKPATRICK. Harry B. (E) National 3ureau ci Standards Div. 9.4, Washington 2S. D. C. KLANE. Frank (G) Corning Glass Works. Corning. N. Y KLAUS. Irving (W) 137 Winthrcp Rd., Washington Park Nixon. N. '. (Permacer.t Products. Tnc.) KLAUS. Sol C.. Jr. fW) 50 S. Mun.n Ave.. Apt. 804 East Orange. N. J. (Automatic Mfg. Corp.) KLEEMAN. Uee A. (R) 2210 Sriargien. Apt. 3 Houston 27, Texas (Harbison-Walker Refractories Co.) KLEIN. Jonathan D. Massachusetts Institute of Technology Rn. 4-051. Cambridge 39. Mass. KLEINHANS. C. J. (E) Porcelain Idetais Corp. 1400 S. 13th St.. Louisviile 10, Ky. KLEKOTKA. Joseph F. (G) 3601 Reed St., Philadelphia 46. Pa (Philadelphia Naval Base) KLEVEN5. H. B. (G) Mellon Institute University of Pittsburgh Pittsburgh 13, Pa. KLEYMEYER. Clifford A. (S) Standard Brick & Tile Corp. 123 N. W. Fourth St. Evansville 3, Ind. KLIMAN, Morton I. 6 Sutton St.. Mattapan 26, Mass KLINDE3. Thomas W. Box 327. Alfred. N. Y. KLINE. Hugh L. (R) Corhart Refractories Co., Inc. 1600 W. Lee St., Louisville 10. Ky. Roster 37 KLINEFELTER. T. A. (RF1) 2116 "K" 5:.. N. W. Washington 7. D. C. KLING33ERC. Cyrus 503 Linden Rd.. State College, Pa. KLIPPER. Joseph i M 1 Clipper Diamond Tool Co.. Inc. 345 Hudson 5:.. New York 14. N. Y. KLOCKE, Edward H. C. Spinks Clay Co., Inc. 1000 First National Bank Bldg Cincinnati 2, Ohio KLOCKNER7" Herman Richard (E) Universai-Rundle Corp. W. Keith McAfee Lab.. Box 1268 Mahon in grown. Pa. KNAPP, Robert C. (W) 26 Virginia Ave., N. W. Glen Bumie. Md. (Insulator Dept., General Electric Co.) KNAPP. Thomas E. (W) 120 Mission Meade Rd., New Castle. Pa. (Shenango China, Inc.) KNAPP. William J. (BI) University of California Dept, of Engineering Los Angeles 24. CaJif. KNAUF7. Robert W. (R) Charles Taylor Sons Co. Box 53, Anner. Station Cincinnati 14, Ohio KNECHT. Albert O. (WI) 201 Edgewood Ave., New Castle, Pa (Universal-Rundle .Corp.) KNIGHT. E. H. (S) Maurice A. Knight Sons Co. Box 150. Crocksville. Ohio KNIGHT. M. A.. Jr. (S) Maurice A. Knight, "Knight-Ware" Box 111. Akron 9, Ohio KNIGHT, MAURICE A., "KNIGHT-WARE** (M. A. Knight. Jr.) Sox 111, Akron 9, Ohio KNIGHT. Meiien A, (G) Minnesota Mining Sc Mfg. Co. 2201 Hudson Rd., St. Paul 6, Minn. KNIGHTON. Heywood J. (G) 334 Trombley Rd. Grosse Pointe Park 20. Mich. (Ford Motor Co.) KNTSELY. Robert C. (G) 2907 Lstcnworth Pky., Toledo 6. Ohio (Kimble Glass Co.) KNI2ZX. Jan D::o (R) Apartado 2739, Mexico. D. F. Mexico (Compania Mexicans de Tubos de Albanai. S. A.) KNOBLAUGH. Walter C. (RI) Box 271, R.R. 3, Tiffin, Ohio (Basic. Inc.) KNOWLES. EDWIN M.. CHINA CO. (W. D. Packman) Newell, W. Va. KNOWLES. Phiiip S. (S) 441 E. 3uford Rd.. ;Macon, Ga. (Elgin-Butler Brick Co.) KNOWLES. William V. (EF) 8905 Champlain Ave. Niagara Fails. N. Y. KNOWLTON, Samuel H. (W) 610 New Center Bldg.. Detroit 2, Mich. (Aluminum Co. of America) KNOX. James J. (G) 5 Meinxer St.. Avene!. N. J. (Knox Laboratories. Inc.) KNUDSEN. Friedrich P. (BI) 4912 Crescent St.. Washington 16, D. C. (National Bureau of Standards) KNUDSEN. Rolf Borgestad. P. A.. Norway (Borgestad Fabrikker) KNUTSEN, Eivind (R) Western Refractories Co. Box 169. lone. Calif. KOCH. Daniel O. (M) E. I. du Pont de Nemours & Co.. Inc. Electrochemicals Dept. 71 Buckingham Ave. Perth Amboy. N. J. Vol. :**>, No. 10 (lOfjf)) KOCH. Frank A. (M) National Sales Corp. 307 . Fourth St.. Cincinnati 2, Ohio KOCH, Keuato Direttore Stabiiimento Tubi Eiettronici Marconi Italiaaa S.p.A. Via Pile, L'Aquiia. Itaiv KOCH, William. J. (WI) A. C. F. Electronics 1336 N. Henry St., Alexandria, Va. KOCHAXEK. Miche: (R) 4141 I53ru St.. 5. E.. Bellevue. Wash. (Gladding. Mc3ean & Co.) KOEHLER. W. A. (RI) Mineral Industries 3!dg. West Virginia University Morgantown, W. Va. KOENIG, Charles Jacob (WFI) Engr. Expt. Su.. Ohio State University Columbus 10, Ohio KOENIG. E. W. (M) Consolidated Feldspar Dept. International Minerals & Chemical Corp. 20 N. Wacker Dr.. Chicago 6, II!. KOENIG. John H. (WFI) Rutgers University School of Ceramics New Brunswick. N. J. KOENIG, L. C. (X) Lindberg Engineering Co. 2450 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) KOHLER CO. (G. P. Gavin) Kohler, Wise. KOHN, Joseph (W) Universal Dental Co. 48th & Brown Sts., Philadelphia 39. ?a. KOHNE. Frank H. (W) 1700 Third Ave.. New Brighton, Pa. (Ceramic Coior 5c Chemical Mfg. Co.) KOHNKEN. Donald H. Box 437, Valley Rd.. Paterson 2, N. J. KOMAC. Thomas N. (R) Republic Steel Corp. 6100 Truscon Ave., Cleveland 25, Ohio KONOPICKY. Kamiilo Forschungsinstitut der Feuerfest-Inuustrie Helmnoltzstr. 27. Bonn, Germany KONOWITCH. Gilbert D. 2010 N. 74th Ave. Elmwood Park 35. III. KONRAD. Howard E. (R) 41 Brookside Ave.. Apt. 7-3 Somerville. N. J. (Johns-Manviile Corp.) KOOIJ.-K. Chamotte Unie N.V. 7, Tielerweg Geidermaisen, Holland KOOS. E. K. (WI) Sterling China Co. East Liverpool, Ohio KOPP GLASS, INC. (C. E. Leberknight) Box 3255 Pittsburgh 13. Pa. KOPPERS CO., INC (Frank L. Jones) Box 128. Verona, Pa. KORA, Yosio 2 Chorae. Katsuyama-Cho Yahata. Fukuoka. Japan (Kurosaki Fire Brick Mfg. Co. Ltd.) KOSCHNY. Arthur American Ceramic Society, Inc. 4055 X. High St.. Columbus 14. Ohio KOSHUBA. Walter J. (BI) 424 Hillcrest Dr., Wyoming 15. Ohio (General Electric Co.) KOWAL. Leo B. (G) Canadian Pittsburgh Industries, Ltd. 300 Blvd. St. Croix Vilie St. Laurent, Que., Canada KOWALXA, Warren R. (G) Libbey-Ower.s-roru Glass Co. 1701 E. Broadway, Toledo 5. Ohio KRAFT. C. W. (S) Krattiie Co.. Niies, Cali:. KRAFT, Donald E. Co. A. 185th Sigr.ai 3n. Camp Polk, La. KRAFT. Maurice M. (E) Krai: Chemical Co. yi7 W ISth 3:.. Chicago, III. KRAFT, Ralph G. (R) 102 W. Chateau Place Milwaukee 17, Wise. (Allen-Bradley Co.) KRAFTILE CO. (C. W. Kraft) Niies. Calif. KRAMER, William Meigs (G) Adamston Flat Glass Div., Holland Glass Co. Box 631, Clarksburg, W. Va. KRANER, Hobart M. i.BFI) Bethlehem Steel Co. Bethlehem, Pa. KREGER, John M. (R) Valentine Fire Brick Co. Div. A. P. Green Fire 3rick Co. Woodbridge. N. J. KREHBIEL, Frederick H. (W) Pyroccr.es Inc., Pataskala, Ohio KREHBIEL, H. Orton (R) Pvrocor.es Ir.c., Pataskala, Ohio KREIDL, E. L. (B) A. D. Little, Inc. 30 Memorial Dr., Cambridge, Mass. KREIDL. Norber: J. (GF) 40 Milford Rd., Rochester 10, N. Y. (Bausch & Lomb Optical Co.) KRETSCHMAR. Ernest (C) Electro-Phos Slag Co. 101 S. Meramec Ave., Clayton 5. Mo. KREUER. Albert L. (M) Orefraction, Inc., 7425 Thomas St. Pittsburgh S. Pa. KRI EG EL. W. Wurth (aFI) North Carolina State College Ceramic Engineering Div. Raleigh, N. C. KRIGER. Frederick S. (G) 148 E. Second St.. Coming, N. Y. (Coming Glass Works) KRILL. Karl E. (3) Ohio State Univ., Res. Foundation Columbus 10. Ohio KROCHMAL, Jerome Jay (RJ) 4240 Brenau Ave.. Dayton 9, Ohio (U. S. Air Force. Project Engineer) KROECK. William H. (G) Coming Glass Works Box 544. Corning, N. Y. KROGSTIE. Lars Bernhard Fredrikstad. Norway (Norsk Teknisk Porseienfabrikk) KRONMAN. Samuel J. (WI) Carteret China Co. High St., Carteret, N. J. KRULL. Alan R. (B) Technological Institute Library Northwestern University Evanston. III. KRUMWIEDE. John F. 406 E. Springrield Ave. Champaign. III. KRUSON. Joseph H. (R) Box 358, Frostburg, Md. (Mexico Refractories Co.) KRYWULT. Edward 2. (W) 171 St. Joseph Ave. Long Beach 3, Calif. (Huntington Tile, Inc.) XUECHLER. Adolph (WI) 169 Congress Ave.. Providence 7. R. I. (American Emery Wheel Works) KULCSAR. Frank (B) Clevite Research Center 540 E. 105th St.. Cleveland 3. Ohio KUMIX5. Charles A. (B) Interchemical Corp. 432 W. 45th St., New York 36, N. Y. Roster -59 XUNDLER. Hanns H. i M ) Aznhold Ceramics, Inc. One E. 5/th St., New York 22. N. Y. KUNZMAN. Edward E. (MU Ferro Corp.. -i 150 E. 5oth St. Cleveland 5, Ohio XURKJIAN. Charles R. (G) Massachusetts Institute of Technology Rm. 4-0J0. Cambridge 39. Mass. KURTZ. Peter, Jr. 827 Second St., Apt. B. Santa Monica. Calif. KUSHNER. 3ur:on A. 3ox 513S, Georgia Tech., Atlanta. Ga. KYANITE MINING CORP. (Gene Dixon) Cullen, Va. KYI, Maun? Yu Box 216, Alfred, N. Y. KYOKWAI. Yogyo Ceramic Assn, ox Japan 7, Shiba-NishikuboSakuragawacho Minato-ku. Tokyo, Japan KYONKA. Joseph C. (WI) 303 12th Ave. N.. Hopkins. Minn. (Ceramic Arts Studio) L LABAN3AT. M. Jacques Soctete P.-nress:cnneIle Des Procuits Francais De Terre Cuite 23, rue de Cronstadt, Paris XV. France LABO RATO RIO QUIMICO NACIONAL (Jorge Ancizar-Sordo) Ministerio de Minas y Petroleos Apartado 2577. Bogota. Colombia LACHMAN. Irwin M. (WJU W.A.D.C.. Area 3. Box 3903 Wright-Patterson AFB. Ohio LACLEDE-CHRISTY CO. DIV. H. X. PORTER CO. ( \V. L. Fahianic) 70S Ridgew-onJ Ave. St. Louis. Mo. L.'.CCNICH. Sixto Codcfredo Porcelana Americana S. A. San Julian y Andes Lomas de Zamora. F.C.N.G.R. Argentina LADOO. Raymond 3. (M) *2 Huntington Rd.t Newton 53. Mass. (Consulting Engineer'' I-ai-ORGE. Louis H.. Jr. (W) 76-1 Marion Ave.. Palo Alto. Caiir*. (Consulting seer) LAHTI. Leslie E. (GJ) I10I1/? N. Eaton St., Albion. Mich. (Coming Glass Works) LAIDLER, Douglas S. 34. Vicarage Ln. Kings Lar.giey. Herts. England (Associated Lead Manufacturers Ltd.) LAIRD. Charles (SI) Box 462. Holly Springs. Miss. (Holly Springs Brick Sc Tile Co.. Inc.) LAIRD. Robert X. (E) 4507 Blue 3ird Ave.. Louisville 13. Ky. (American Radiator Sc Standard Sanitary Corp., Plumbing Div.) LaMAIRE. Robert V. (RI) Sawmill Rd.. Warren Tp. Plainfield, N. J. (International Nickel Co.. Inc.) LAMAR. George 3. (M) rnterchemtcal Corp., Albion Kaolin Div. Hephzibah. Ga. I-AMB, Hal (M) Braun Corp.. 1363 S- Bonnie Beach PI. Los Angeles 54, Calif. LAMBE. C. M. (MFT) United States Gypsum Co. 300 W. Adams St., Chicago 6, 111. LAMBERT. Joseph M. (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh IJ. Pa. LAMBERTSON. Wingate A. (Bl) Carborundum Co.. Research Lab. Niagara Falls. N. Y. Vol. 3.5, No. 10 (19.56) LAMBIE. J. M. (R) Findlay Csay 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. Fla. LANE, Richard O. (RI) Macklin Co.. 2917 Wildwood Ave. Jackson, Mich. LANG, Richard L. (G) Ohio Fuel Gas Co. 17 N. Fourth Sr.. Zanesville, Ohio LANG, Samuel G. (E) Hanwood Glass St Metals Co. Box 865, Martinsburg, W. Va. LANG. S. M. (W) 9713 Braddock Rd., Oakview Silver Spring, Md. (National 3ureau 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. (Syivania Electric Products Co.) LANGSTON. Robert 3. University of California Hearst Mining Bldg., Rm. 164 Berkeley 4, Caiif. LANIER. William S. (R) Babcock Sc Wilcox Co. Old Savannah Rd.. Augusta. Ga. I.ANNES. Eugene M. (XI) 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. (MF) Lapp Engineering Co. 68 W. Main St.. Le Roy. N. Y. LAPP INSULATOR CO.. INC. (K. E. Stettinius) Le Roy, N. Y. LARISCK. Herbert W. (EJ) 46 Fairview Ave.. Valley Stream, N. Y. (Fairchild Engine Div.) I.ARKJN, Paul G. (S) 250 N. Harrison St., Campbell, Calif. (Consuitant) LaROCCA. Frank J. (R) Colorado Fuel & Iron Corp. Box 316, Pueblo, Colo. LARSEN, Marie A/S Bing Sc 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. (RJ) Babcock Sc Wilcox Co. 16! E. 42nd Su New York 17, N. Y. I.ASEMAN, Malcolm E. (S) 51 S. Fenton St.. Denver 14, Colo. (Robinson Brick St Tile Co.) LASKY, Elliott Box 347. 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. (El) 248 Quesrenci Ave. Mount Lebanon. Pittsburgh J4, Pa. (O. Hommei Co.) LATIMER. Trent W. Ohio State L'niversity, Baker Hail Columbus '.0, Ohio LATTIN. Judson M. (R) 14644 S. Eubrooke Ave.. Doiton, III (International Harvester Co ) LAUCKNER. Juiian H. J 27 A Stadium Terrace Champaign. III. LAUGHLIN. HOMER. CHINA CO. (J. M. Weils) 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., Box 394, Alton. Ill LAWRENCE. Howard O. (W) Industrial Ceramics Ltd. Cooksviile. Ont.. Canada LAWRENCE. Ralph V. (RI) 926 Kenneth Rd., Glendale 2, Calif. (Gladding. McBean Sc Co.) LAWRENCE. Waiter F.. Jr. (WI) 153 Momingside Rd., Verona. N. J. (RCA Victor) LAWRENCE. Willis G. (3) State University of New York, College of Ceramics. Alfred, N. Y. LAWSON. Lout.*. Jr. (W) Wear Virginia Pulp & Paper Co. Development Dept.. Charleston, S. C. LAWSON. W. 3ranch (W) 647 N. Elm $:., Erwin. Tenn. (Lawson Feldspar Sc Minerals) LAXTON. Wiihur (G) Hazel-Atlas Glass Co.. 126 Market St. Zanesville. Ohio LAYNE. Fred A. (W) Louthnn Mfg. Co. East Liverpool. Ghio LAYTON. Donald R. (GI) Brockwav Glass Co.. Brockway, Pa. LAZARKIS. Peter J. (W) 37 Fifth Ave.. Watertown. Mass. (Raytheon Manufacturing Co.) LEAD INDUSTRIES ASSOCIATION (Robert L. ZlegfeM) 60 E. 42nd St. New York 17. N. V. LEAKE. Fred. Jr. (M) Evans Lead Corp., 3ox 1467 Charleston 2S. W. Va. LEAXDER. Karl Johan Langgat. 19. Hoganas. Sweden (Hoganas-Biilesnolms AB) LE-WER. Stanley (R) 1202 Niagara St., Niagara Falls, N. Y. (Carborundum Co.) LE BELL. Rolf Casimir Pargas Kaikbergs Aktiebolag ABO Kakelfabrik Slottsgatan 52. ABO. Finland T.EBERKNIGHT. C. E. (GF) Kopp Glass. Inc. Box 3255. Pittsburgh 18, Pa. LeBLANC. John R. Box 16, Alfred Sta., Alfred, N. Y. LEDDY, Robert M. (SI) Box 123. Hammonton, N. J. (Alliance Gay Product Co.) LEE CLAY PRODUCTS CO- INC (Martin S. Bowne) Gearfield. 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. (Dentist's Supply Co. of New York) Roster 63 -EECH. L. G. H. & 'j. Th>unc, Ltd. Victoria Tile Works Holder, Hereford, England LEEDS. Donald H. i. RJI) ' 2025 Westfield Terr., Bethlehem. Pa. (Bethlehem Steei Co.) LEES. Arch A. (R) 411 Avon Dr., Pittsburgh 16. Pa (Carborundum Co.) LEFFORGE. J. W. (3) Monsanto Chemical Co. Everett Station. Boston 49. Mass LEFORT. Henry G.. Jr. (I) 411 Fairlawn Dr., Urbana. 111. LE HERON, Harold Etablissements Porcher Usines de Revin, Ardennes, France LEIBIG. Edward C. (R) Coming Glass Works, Corning, N\ Y. LEIBSON. J. S. (Wi) Insulator Dept., General Electric Co. S. Charles 4 Cromwell Sts. Baltimore 2, Md. LEIPOLD, Martin H.. Jr. 95 E. 12th Ave., Columbus 10, Ohio LEISER. Craig F. 8344 30th N. VV,, Seattle 7. Wash. LEISEY. Wiiliam B. (S) 615 Elm Ave., Muhlenberg Park Reading, Pa. (Manu-Mine Research 4 Development Co.) LEITTEN, Carl F. (R) 50 Hawkins Ave., Hamburg, N. Y. (Electro Refractories & Abrasives Corp.) LELAND. John A. (E) 469 Arbramar Ave. Pacific Palisades, Calif. (Douglas Aircraft Co.) LEMMSRMAN. Paul C. (R) E. I. du Pont de Nemours 4 Co., Inc. Grasttlli Chemicals Dept. National City Bank Bldg. Cleveland 14, Ohio LeMUNYON. James S. (E) Tappan Stove Co.. 250 Wayne St. Mansfield. Ohio LENCHNER. Theodore (DF) 5153 3eeier St.. Pittsburgh 17, ?a. (Vitro Manufacturing Co.) LENNON. A. G. (W) Canadian Potteries Ltd. 360 31vd. du Seminaire St. Johns. Que.. Canada LENNON. John W. (WI) BatteJle Memorial Institute 505 King Ave.. Columbus. Ohio LENTZ. Clarence J. (R) Quebec Iron St Titanium Corp Box 40, Sorel, Que.. Canada LEONARD. Jean (M) 96-24 Corona Ave.. Corona 68. N. Y. (Jean Leonard Ceramics) LEOPOLD. Jean H. Leopold & Cie. Pfaffenhorfen. (Bas-Rin), France LEO-WOLF. A. L. (Ml Carborundum Co., Globar Div. Niagara Fails. N. Y. LEPP. 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. LESSO. Harold F. (R) 631 Bcecbmont Dr. Dearborn Hills, Mich. (Great Lakes Steel Corp.) LESTER. Frank P. (W) 75 Mercer Ave.. Hartsdale, N. Y. (Consulting Engineer) Vol. .15. No. 10 (1956) LESTER. Ronald H. (WJI) 5S1I Garrison 3Ivd.. Baltimore 15, Md. (General Electric Co.) LESTER, W. Ronald (GF) Liberty Glass Co. Sapulpa, Okla. LESZL, Matthias "Sraalteria e Metallurgies Ve.neta" Bassano del Grappa, itaiy LETORT. Marc Yves Centre National d'Etudes et Recherches Ceramiques 3 Avenue Paui Doumer Paris 16, France LETTER. Eugene C, (BJ) Bauscb 4 Locr.b Optical Co. Dept. G-62, 5C-3, Rochester, N. Y. LEVENGOOD. WiUiam C. (G> 4473--289th St.. Toledo. Ohio (Libbey-Owens-rord Glass Co.) LEVI, Ormonde S. (G) Verd-A-Ray Corp. 615 Front St., Toledo 5, Ohio LEVIN, Ernest M. (3) National Bureau of Standards Div. 9.7, Washington 25, D. C. LEVIN. I. (M) L St L Manufacturing Co. 136 Eighth St. Upland. Chester, Pa. LEVINE. Irving L. (W) 113 Comstock Ave., Syracuse 10, N. Y. (General Electric Co.) LEVY, Dorothy (D) 1212 Lincoln Ave., Highland Park. 111. LEWIS, Albert D. (G) Kimble Glass Co., Vineland. N. J. LEVY, Raymond H. (B) S501 Lynview Ave.. Baltimore 15. 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) Glen-Oery Shaie Brick Corp. Box 86, Sbiliington, pa. LEWIS. J. H. (G) Blue Ridge Glass Corp. Kingsport. Tettn. LEWIS. J. M. (W) Abingdon Potteries. Tne. 801 N. Main St.. Abingdon, 111. LEWIS. William C. (G' Big Flats. N. Y. (Coming Glass Works) LEWIS. William N. (G) I-T-E Circuit 3reaker Co. 601 E. Erie Ave,. Philadelphia 34, Pa. LIBBEY-OWENS-FORD GLASS CO. (George B. Watkins) 1701 E. Broadway Toledo 5. Ohio LIBERATORE, Laurence C. (G) Taylor Instrument Co. 95 Ames St.. Rochester 1. N. Y. LTEDER, Phillip H. (R) 2600 Dogwood Lane. Norristown. Pa. (E. J. Lavino 4 Co.) LIEDERBACH. William H. (31) 202 Prospect Ave.. Pewaukee, Wise. (Globe-Union Inc.) LIGON. Elmer R. (SI) W. S. Dickey Clay Mfg. Co. Box 402, Pittsburg, Kans. LILLIE. Howard R. (GF) 191 Delevan Ave_ Coming, N. Y. (Coming Glass Works) LIM. Eung K. Seoul National University College of Engr., Seoul, Korea LIM. Richard H. Y. Box 1039. Alfred. N. Y. LIM. Yock Lio 915 Oakland. Ann Arbor. Mich. LIMES. Robert W. (RI) Allegheny Lndlum Steel Corp. Research Labs., Brackenridge, Pa. LIN. Francis C. M. (G) Hazel-Atlas Glass Co. Washington. Pa. LINDENTHAL. John W. (G) Ohio State University Engineering Experiment S:.i. Columbus 10, Ohio LINDER. Cyril S. (E) 1139 Park 3:.. Tareatum, Pa. (Pittsburgh Plate Glass Co.) LINDQUIST. C. Alan. Jr. (31) 123 Grandview Ave., Conncaut, Ohio (Astatic Carp.) LINDROTH. Sti; A. Sver.ska Accumulator A3. Jur.gner Oskarshamr.. Sweden LINDSAY. Carey E. (RI) Niies Fire Brick Co. 165 E. Park Ave., Niles. Ohio LINDSAY, J. Gordon (3) Aluminium Labs. Ltd. Ar-.ida. Que., Canada LINKHORN, William H. (W) 423 S. Western Ave.. Kokomo, Tad. (American Radiator 4 Standard Sar.itarv Corp.) L1NSEIS, Max Selb/ 3ay Gerhard-Hauptmannweg 9, Germany LINTZ. E. H. (WFI) 42 Heiskeil Ave.. Wheeling, W. Va. (Wheeling Tiie Co.) LINWCOD. Sidney H. (W) Stackpoie Carbon Co., St. Marys, Pa. LINZ. Arthur (E) 551 Fifth Ave., New York 17, N. Y. (Consultant 1 LIPMAN, B. David Gen. Dei., Alfred, N. Y. LITEN, Alexander F. Box 332. Salem. Mass. LITHIUM CORP. OF AMERICA. INC. (Walter M. Fenton) 2560 Rand Tower Minneapolis 2, Minn. LITTLE. John M. (S) 120 5. 2Sth Ave.. Hattiesburg, Miss. (Hattiesburg Brick Co.) LITTLETON. Joseph C. (G) 221 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 it L MANUFACTURING CO. (!. Levin) 135 Eighth St. Upland. Chester. ?a. LLOYD. Katherine (R) Kaiser Aluminum 4 Chemical Corp. 1924 Broadway, Oakland. Calif. LO. Wing-Cheuk 10 Union St.. New Brunswick. N. J. LOBAUGH. Frank E. (RI) 1052 Sherman Ave., Plainfield, N. J. (Universal Atlas Cement Co.) LOCHRIDGE. James F. (E) Ferro Enamel de Mexico. S. A. 450 Oriente 171. Mexico 14. D. F. LOCKE. Ralph S. (B) Diamond Springs Lime Co. Box 409. Diamond Springs, Calif. LOGAN CLAY PRODUCTS CO. (Barton A. Holl) Box 698 Logan. Ohio LONDEREE. Joseph W.. Jr. (B) 3918 Warner Ave.. Louisville. Ky. (Corhart Refractories Co.) LONG. 3emard Glaces de Boussois 22. Boulevard Malesherbes Paris 8, France LONG, George R. (E) Frigidaire Div., General Motors Corp. 300 Taylor St.. Dayton 1. Ohio LONG. John V. (G) Solar Aircraft Co. 2200 Pacific Highway San Diego 12, Calif. Roster 65 LONG, Luther L. (G) Owers-Cormr.g Fibcrglas Corp Case Ave.. Newark. Ohio LONG. Robert, Sr. ;E) American Porcciain Enamel Co. 1235 Keating Ave. -Muskegon 36. Mich. LOWRANCE. R. T. (Wi Jackson Tile Manufacturing Co. Box 3006, Jackson, Miss. LUCAS. Joseph M. (W) 1431 Broad 3lvd. Cuyahoga Falls, Ohio (U. S. Stoneware CoA LYTLE. W. O. (C) Pittsburgh Plate Glass Co. Research Lab.. Creighton, Pa. LYTTLE. Frobisher T. (W) 1031 Findley Ave., Zanesville, Ohio (Mosaic Tile Co.) LONG. Haber: R. (W) National Tile A Mfg. Co. LL'CEK, John R. c.\IJ) 31 Bushey Rd., Pittsrieid, Mass. Me 1200 E. 26th St.. Anderson, Ind. (General Electric Co.) McADOO. D. ?. (W) LONG, Russel! E. (RI) LUCIDO, Peter J. J. M. Huber Corp. Brush Beryllium Co. 1518 Central, Lafavette. Ind. 100 Park Ave., New York, N. Y. S301 Perkins .Ave., Cleveland 3, Ohio LONGENECKER. Robert J. t.M) 46 Jatr.es Rd., Broomall, Pa. LUDOWICI. Johar.n W. Carl Ludowici K.a.A. Co. Jockgrim Rheinpfalz. West-Germanv Me.ALLiSTER, Christopher (GI) Box 281, Clarksburg, W. Va. (Pittsburgh Plate Glass Co.) (Foote Mineral Co.) LUDWIG, David W. (GI) Mc.ALPINE. Kenneth B. (G) LONGFRITZ, Robert K. (RI) 107 Penn View Dr.. Monroeville. Pa. 1201 Union Ave., Bracker.ridge. Pa. Brighton Brick Co. (Pittsburgh Plate Glass Co.) (Pittsburgh Plate Glass Co.) Box 236. New Brighton, Pa. LUDWIG. Urban W. (G) McASKILL, James I. (W) LONGr.NO. Ted E. (S) 2835 Little York Rd., Dayton 4, Ohio 31! King 5t. W. Henderson Clay Products Henderson, Texas (Univis Lens) LUEDERS, Roland (M) Kingston. Ont., Canada (Frontenac Floor & Wall Tile Co. Ltd.) LONGWELL. Burton (E) 3241 Bradford Rd. McAULSY. James W. (G) Republic Steei Corp. Geveland Heights 18, Ohio 2334 Sherwood Rd., Toledo, Ohio 1423 Republic Bldg., Cleveland 1, Ohio (Ferro Corp.) (Libbey-Owens-Ford Glass Co.) LOOMIS. David G. (M) LUHRS. Millen E. (G) McBURNEY. John W. (SF) Loomis Engineering & Mfg. Co. Lihbey-Owens-Ford Glass Co. 1543 N. Falkland Ln. 125 S. 14th St., Newark 7, N. J. 1701 E. Broadway, Toledo, Ohio Silver Spring. Md. LOREY, Frederick D. (GI) LUKS. Daniel \V. (WI) (Consultant 1 41 Meadow Brook Apt., Coming, N. Y. (Coming Glass Works) Star Porcelain Co. Muirhead Ave., Trenton 9, N. J. McBURNEY, William C. (D) R. R. 5. Easibrook Rd.. New Castle, Pa. LOREY. G. Edwin Dept, of Ceramic Engineering School of Mines & Metallurgy Roila, Mo. LOSCO. Alfred G. (3) 27 Paterson Ave., Paterson, N. J. (Kcarfort Co., Inc.) LOL'DEN, R. H. (WI) ilcGean Chemical Co. Midland Bldg., 101 Prospect Ave. N. W. Cleveland 13, Ohio LOL'GHRIDGE, Frederick A. (G) 52 Norwood Ave., Manchester, Mass, i Syivania Electric Products. Inc.) LOUTHAN MANUFACTURING CO. (C. W. Gerster) 2000 Harvey Ave. East Liverpool, Ohio LULL. Stanley E. (RI) 83-8 Park .Ave., Worcester 5, Mass. (Bay State Abrasive Products Co.) LUNAR, Thomas E. (WI) Globe Union. Inc. 900 E. Keefe. Milwaukee 1, Wise. LUND. H. Howard (S) 44 S. Elmwood Ave., Palatine, 111. (Armour Research Foundation) LUND. L. Howard (SJ) 168 Austin St.. Carpentersville. III. (Central Commercial Co.) LUND, Melvin S. (W) 426 E. State St., Alliance, Ohio tCoioniai insulator Co.) LUND, Randolph A. 1717 W. 105th St.. Chicago 43, III. LL'NDE. Marvin (Snenango China. Inc.) McCAIN. Kenneth B. (B) Wilbur 3. Driver Co. 1875 McCarter Hwy., Newark 4, N. J. McCAMMON. James W. (M) Dept, of Mines. Parliament Bldgs. Victoria. 3. C., Canada McCANN. D. M. (WI) Akron Porcelain Co.. Akron 14, Ohio McCANN. Sidney W. (El) Pfaudler Co. 1000 West Ave., Rochester 3, N. Y. McCARTT. Kenneth C. t'W) 1408 Delaware Ave.. New Castle, Pa. l L'niversai-Rur.ale Cura.) McCLAVE. James W. (SI) 3ox 308. Toronto. Ohio (Peerless Gay Corp. ; LOVE. L. G. (G) National Lime 5t Stone Co. 4241 Union 3av Lr... Seattle. Wash. LUSHER. Gerald H. (R) McClelland. Roland h. iwd Globe-Union Inc.. CeturaUb Div. First National 3Idg,, Findlay, Ohio Norton Co.. 5905 Pacific Blvd. 900 E. Keefe Ave.. Milwaukee, Wise. LOVELAND. Edward \V. (G) Huntington Park. Caiif. McCLURE. Clifton M. (RJ) 304 75th St.. North Bergen. N. J. LYLE. Aaron X. (GF) 2415 Edgewood Ave., Anderson, S. C. (Frar.-Stef Manufacturing Co.) 21 Cumberland Rd. McCLURG. John (G) LOVELL. George H. 3. West Hartford 7, Conn. Cglebay Norton A Co. Siiwood Ceramics. Box 152 (Hartford Empire Co.. 1200 Hanna Bldg. Bergvlei. Johannesburg, South Africa Div. Emhart Mfg. Co.) Geveland 15. Ohio LOVENB.ACH, J. LYMAN. Donald R. McCOLLOM. Perry C. (RI) Glaceries de Saint Roch S. A. Box 737. Alfred. N. Y. American Refractories A SO, rue du Luxembourg LYNCH. Eugene D. (W) Crucible Corp.. North Haven. Conn. Brussels. Belgium University of Illinois McCONAUGHA. Wayne H. (S) LOVETTE. Paul V.. Jr. (R) Dept, of Ceramic Engineering Natco Corp.. Box 436 R.R. 1. Painted Post. N. Y. 204 Ceramics Bldg., Urbana, 111. East Canton. Ohio (Coming Glass Works) LYNCH. James F. (R) McCONNELL. G. F. (W) LOWE. Earl C. (SI) Battelle Memorial Institute Mosaic Tile Co.. Zanesville. Ohio Box 46. Logan. Ohio 505 King Ave., Columbus 1. Ohio MeCORMICX. John M. (G) (Straitsville Brick Co.) LYNCH. John F. (W) 1827 Richards Rd.. Toledo 7, Ohio LOWE. Edwin C. (R) 6319 N. Leavitt. Chicago, III. McCORMICK. Stewart W. (RI) 2112 Cohoian St. (Lindberg Engineering Co.) Corhart Refractories Co. Niagara Falls, Ont., Canada (Norton Co.) LOWE. George X. (RI) LYNSAVAGE. Walter F. (G) 210 Arnold Ave., Port Allegany, Pa. (Pittsburgh Coming Corp.) 1600 W. Lee St.. Louisville. Ky. McCOY. Nelson (W) Nelson McCoy Pottery Co. Charles Taylor Sons Co. Heights-Rockefeller Bldg., Rm. 210 Mayrield at Lee. Cleveland 18. Ohio LOWE. William S. (R) A. P. Green Fire Brick Co. 1018 E. 3reckenridge St.. Mexico. Mo. LOWES. Clarence G. (S) New Bethlehem Tile Co. 311 Lafayette St.. New Bethlehem. Pa. LYON, John B. (S) Acme Brick Co.. Denton, Texas LYON, Kenneth C. (GF) 357 E. Washington St., Dunkirk, Ind. (Ball Brothers Co.. Inc.) LYONS. Clifford T. (W) 9825 Bowman Blvd., Dallas 20. Texas (Trinity Ceramic Supply Co.) 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. LOWER. Lloyd C. (S) LYONS, S. C. (M) 3198 Chestnut St.. Philadelphia, Pa. I 227 Washington St. New Bethlehem, Pa. Georgia Kaolin Co. Dry Branch. Ga. McCUNE. Samuel E. (R) United States Steel Corp. (New Bethlehem Tile Co.) LYTLE. Jack A. (BI) Gary Works Res. Lab. 991. Gary, Ind. LOWER. Lloyd. Jr. (SJ) 308 E. Green Tree Rd. McDANEL. Donald W. (W) New Bethlehem Tile Co. Milwaukee 17. Wise. McDanei Refractory Porcelain Co. New 3ethlehem, Pa. (Allen-Bradley Co.) 510 Ninth Ave.. Beaver Falls. Pa. VOL. 35. No. 10 (1956) Roster 67 McDANEL, Melvin W. (W) R.R. 2. Eaitvale Rd. Beaver Fails. Pa. (McOanel Refractory Porcelain Co.) McDANEL. Sumner \V. R.R. 2, 3eaver Falls. Pa. McDaniel, l. l. tr) Phelps Dodge Corp. Morer.c: 3rar.ch. Morenci, Aria. McDERMCTT. James ]., Jr. (G) 126 William New York 38, N. Y. McDonald, c. h. >< s Wes: 3ros. 3rick Co. 6500 Sherir: Rd.. N. E. Washington 27, D. C. McDonald, e. f. (ed Ingram-Richarcson Mfg. Co. Beaver Falls. Pa. McDonald. Howard A. (R) 12202 E. 19th Ave.. Spokane 64, Wash. (Kaiser Aluminum & Chemical Co.) McDOUGAL, Taiae G. (WFI) 1117 South Dr.,, Flint 3, Mich, and Ha'penny House Somerset 3ridge, Bermuda McDOWALL, Tan C. New Zealand Pottery St Ceramic Research Assn., Inc. Private 3ag, Lower Hutt, New Zealand McDOWELL, J. Sports (RF) 4716 Bayard Sc., Pittsburgh 13. Pa. (Harbison-Walker Refractories Co.) McDOWELL, Samuel J. (3FI) 52 Efcn Ave., Metuchen, N. J. (American Lava Corp.) McELROY, R. H. (MI) International Clay Machinery Co. IMS Bolancer Ave.. Dayton 1, Ohio McEVOY. Robert J. (RI) 2234 Berdan, Toledo 13, Ohio (Owens-Coming Fiberglas Corp.) McFARLAND. James E. (E) M025 Greenbay Ave.. Chicago 33, 111. ''Inland 3ted Co.) McCEAN. Ralph L. (E) Midland Blcg.. .101 Prospect Ave., N.W. Cleveland 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. McGinnis, r. a. (W) American Lava Corp. Cherokee 3Ivd. & Mfgrs. Rd. Chattanooga 5. Tenn. McGGHAN. G. William (E) Armco Steel Corp.. Middletown, Ohio McGOLPIN. William C. (S) Rm. 403. 57 31oor St.. W. Toronto 5. Ont.. Canada (Natco Clay Products, Ltd.) McGRAW. Deiford A. (G) 4117 Graceway, Toledo 6, Ohio f 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.. 3ox 47 Perth .Amboy, N. J. McHOSE. M. M.. Jr. (M) Such Qay Co.. Box 47 Perth Amboy, N. J. McINTOSH. C. M. (W) Radio Materials Corp. 1708 W. Belmont Ave., Chicago 13. III. McINTOSH. Harold W. (G) American Window Glass Co. Farmers Bank Bldg., 20th Floor Pittsburgh 22, Pa. McINTOSH. William A. (S) West Virginia Pulp St Paper Co Polyehemicals Div. Charleston, S. C. Vol. 35, No. 10 (1956) McIntyre, g. k. (efd Ferro Corp. 4150 E. 56th St.. Cleveland 5, Ohio McKAIG, W. Wallace (R) Cumberland Steel Co. Box 23. Cumberland, Md. McKANE. John W. (R) 257 Chestemeld Ave. Glen Ellyn. 111. (Foremost Foundry Supply Co.) McKEAND, Irvin J. (W) MinneapoiiS'Honeyweil Regulator Co. Research Center 500 Washington Ave. S. Hopkir.s, Minn. McKEE. William D., Jr. (B) 64 W, Tuiane Rd., Columbus 2, Ohio (Batteile Memorial Institute) McKEEN, Richard D. (WI) Box 625, Haverhill, Mass. (Western Electric Co.) McKENDRICN, Alexander Glen'ooig Union Fire Gay Co.. Ltd. Glenboig, Lanarkshire, Scotland McKEOWN, J. Duncan (R) 3ox 137 Burnet Woods Station Cincinnati 20. Ohio (Carborundum Co.) McKEOWN, Thomas H. (M) Box 31, Metcchen. N. J. (E. I. du Pont de Nemours St Co.. Inc.) McXI3BEN, Bur: 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 Fiberglas Corp. Glass Res. Lab.. Newark. Ohio McKULLA. George W., Jr. 4711 17th N. E-, Seattle 5. Wash. McLACHLAN. Eugene K. (R) 2220 Sunshine. Johr.stcwn, ?a. (Bethlehem Steel Co.) McLAIN FIRE BRICK DIV, H. K. PORTER CO, INC (Lawson E. Mason) Gark Ave.. Welljviile. Ohio McLANE. James ?. (M) Diamond Pottery Corp. 50--56 Cnina St.. Crooksviile. Ohio McLaren. Henry D. (E) Ferro Enamels (Canada) Ltd. Box 37, Oakville. Ont, Canada McLaren, John (M) Box 75. East Liverpool. Ohio (Beil Research Lata.) McLaughlin. John l. (E) 564 S, Craig PI., Lombard. III. (Allied Porceneil Inc.) McLaughlin, Joseph k. (wd Hyalyn Porcelain. Inc. Hickory, N. C. McLaughlin, wiiium h. (R) Alsey Brick -5c 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., Jr. (GJ) 645 S. Cannon Ave.. LansdaJe, Pa. McMASTER. Harold A. (G) Permaglass, Inc, Box 195, Sta. A. Toledo 5, Ohio McMULLF.N, John C. (R) 9325 Rivershore Dr. Niagara Falb, N. Y. (Carborundum Co.) McMURDIE. Howard F. (BF) National Bureau of Standards Washington 25, D. C. McMURTRY. Carl H. (RJI) 72 Maple Ave.. Wellsville. N. Y. (State University of New York, College of Ceramics) McNamara, e. p. cwfd 73 Ritchie Ave.. Cincinnati 15. Ohio (Cambridge Tile Mfg. Co.) McNAMARA. Edward P., Jr. 135 E. lhirc S:.. Coming, N. Y. McNAMARA, Richard B. (R) 17 Lochiar.d Dr., 3u:Talo 25, N. Y. (Electro Re:factories & Abrasives Corp.) McNAL'CHTOX, Ronald R. (3) Central Technical Library Consolidated Mining & Smelting Co. of Canada, Ltd., Trail. B. C., Canada McQUARRIE. Malcolm C. (B) 105 E. Nittany Ave.. State College. Pa. (Pennsylvania State University) McRITCHIE. Frank H. (R) Mellon Institute, 4400 Fifth Ave. Pittsburgh, Pa. McRORY, Glenn L. (M) New Jersey Zinc Co. 1007 National City Bank Bldg. Cleveland 14, Ohio McTAGGART. G. Don Coming Glass Works, Corning, N. Y. McVAY. T. N. (BFI) 10 Oakwood Court, Tuscaloosa, Ala. (U. S. 3ureau of Mines) McWALTER. H. G. (R) Laclede-Christy Co. Div. H. K. Porter Co. Inc. 2000 Hampton Ave., St. Louis 10, Mo. McWILLIAMS. Robert J. (El) Pfaudler Co. (Elyria Div.) Taylor St., Elyria, Ohio M MacALPINE. William M. (G) 357 E. Main St.. Somerville. X. J. (Johns-Manville Research Laboratory) MacDONALD, James E. (R) McFeeiy Brick Div. General Refractories Co.. Latrobe. Pa. MacDONALD. Raymond S. (G) Coming Glass Works. Coming, X. Y. MacDONALD. R. W. (WI) R.R. 11. Box 561, San Antonio. Texas (Consulting Engineer) MACER. W. E. (M) Carborundum Co., Globar Div. Niagara "ails, N. Y. MacGIBBON, Richard John G. Stein & Co.. Ltd. Manuel Works Nr. Linlithgow, Scotland MACHLAN. G. R. (G) Owens-Coming Fiberglas Corp. Newark. Ohio MacINTYRE. Donald J. (W) R.R.. Piftard. 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 St Development Dept. Swisden House. Moorgate Rotherham. England MacKENZIE, James T. (R) 4300 Ninth Court S. Birmingham 5, Ala, (Southern Research Institute) MACXLIN CO. (Richard O. Lane) 2917 Wildwood Ave., Jackson, Mich. MacLEOD, John United Fireclay Products, Ltd. 140 W. George St. Glasgow. C. 2., Scotland MacNEIL, S. Ambrose Demcrara Bauxite Co., Ltd. Mackenzie, British Guiana MacRAE, John (G) Fiberglas Canada Ltd. Box 309, Guelph, Ont., Canada Roster 69 M AC ZUHA, Ucor's'c i:\.f) MARCH, Joseph '.V. (S) MASKILL, V.'iiliam J315 Highland Rd. Nova Sco::a Technical College Webb Corbett. Ltd. East 5:. Lcuss, I!!. Halifax. N. S.. Canada Coaibournbil! Giass Works (Alcoa Research Labs.) MARCUS. Leon 131) Stourbridge. Worcester, England madden, rodct: c. (b> 1537 Cover.try Rd.. Cleveland. Ohio MASON. Cecil R.. Jr. i J15 ?im Sz. (Horizons. Inc.) 375 Courtenay Dr., N. E. Saul: See- Marie. Oat., Canada MARCYN, C-.es:e: A. (E' Atlanta 5. Ga. (Alsjoma Steel Corp., Ltd.) ; MADDOCK. A. M. (W) 3502 S. Kensington Ave. Westchester. III. MASON CITY BP.ICK & TILE CO. i.C. F. Garland] Mason City, lewa R. R.. Washington Crossing, N. J. (Chicago Vitreous Corp.) MA.SON. Frank (W) MADSEN. Leif Egii MARGOLIS. David iR) Coioniai Insulator Co. Box 4203. Sar.aakcrvn 109/111 . Oslo. Norway 39 Glenwoc-d Ave.. New Rochelle, N. Y. (Fish-Schurm.an Corp.) 9-t; Gran: Akron 11. Ohio MASON. Lawson E. (R) 8 (A/S Den Norske Slipeskivefabr.) i MAGAZINE. Arnold L. (G) CBS-Hytron Corp. MARGRAVE. John L. (B) University of Wisconsin Dept, of Chemistry, Madison 6, Wise. McLain .-ire 3rick Div., K. K. Porter Co., Inc. Clark Ave.. Wellsville, Ohio 100 Zndicott St.. Danvers. Mass. MARK. Stanley D,, Jr. (R) MASSENGALE. Gordon B. (RI) MAG ZD, H. S. (WI) a American Radiator St Standard 1592 Love Rd.. Grand Island. N. Y. (Carborundum Co.) 553 Audubon Ave.. Pittsburgh 3-, Pa. (Harbison-Walker Refractories Co.) a Sanitary Corp., Box 907 Trenton 5. N. J. MARLETT, Charles J. (M) One Lloyd Ave.. Latrobe, Pa. MASSON. R. Porzellanfa'orik Langenthal A. G. MAGNUSON. V. E. (M) (Kennumeral. Inc.) Lungenthal. Switzerland Western Feldspar Milling Co. MARQUIS. John E. (W) MATCHULAT, John G. (R) Box 671, Salida, Colo. Peznco Corp., Res. & Dev. Lab. Buffalo Rd., R.R. 2 MAGOR. James K. (E) 2552 Grcenmount Ave. East Aurora, N. Y. United States Steel Corp. Baltimore 13. Md. (Electro Refractories 3c Applied Res. Lab.. Monroeville. Pa. MARSHALL. Darwin (B) Abrasives Corp.) MAGUIRE. Edward A., Jr. Electro Metallurgical Co. MATEJCZYK. John F. (E) 1335 E. Price S:.. Philadelphia 38, Pa. MAGUIRE. Samuel ;G.. Jr. (B) Metais Research Labs. Box 580. Niagara Falls. N. Y. 7306 Trevanion Ave., Pittsburgh 13. Pa. (O. Homme! Co.) United Clay Mines Corp. MARSHALL, Paul A. (G) MATERIALI P.EFRATTARI 101 Oakland St.f Trenton 6, N. J. 1301 Cherry St., B.-ockway, Pa. SOC. p.AZIONI (J. Charles Mathon) MAHIER, Lois W. (D) (Brockway Glass Co., Inc.) Via Elia. Lcmbardini 13 4535 Harding Blvd. 3aton Rouge 7, La. MARTIN, Albert E. (M) Almar Specialty Machines Ltd. Milano 744, Italy MATHEXY, Richard E. (S) (Southwestern Louisiana Institute) * MAHONEY. Frank B. (E) Richmond Radiator Co. 3ox 111, Metuchen, N. J. Maple, Or.t.. Canada MARTIN. Francis W. (G) 101 Hornby Dr., Painted Post. N. Y. (Coming Glass Works) R.R. 7, Box 307, Birmingham, Ala. (Natco Corp.) MATHER. Mrs. Katharine (B) Waterways Experiment Sta. MAJESXE, Joseph (G) T. C. Wheaton Co.. Millville. N. J. MARTIN, Frank B. (R) 3 MALCOLM. Richard B. (E) O. Homme! Co. E. J. Lavino & Co. Box 29. Norristown, Pa. Box 475, Pittsburgh 30. Pa. MARTIN. H. C. (R) MALM. Arthur T. (RI) Carborundum Co. 233 Beverly Rd.,' Worcester 5. Mass. Buffalo Ave.. Niagara Falls, N. Y. (Norton Co.) MARTIN. James X. (M) Drawer 2131. Jackson, Miss. MATHIASES'. O. E. (S) Federal Seaboard Terra Cotta Corp. 3ox 301. Perth Amboy. N. J. MATHIESON. George W. (G) 2253 Castlewood Dr., Toledo 13. Ohio (Kimble Giass Co.) MALOCTIAN. Markay H. (3i 1063 Helen Ave., Lancaster, Pa. MATHIESON. Roblin M. (R) 405 Mobegan Ave., New London. Conn. (Posey Iron Works. Inc.) Aluminium Limited Sales, Inc. (L'.S.N. Underwater Sound Lab.) MARTIN. John R.. Jr. (W) 630 Fifth Ave.. New York 20, X. Y. 3 MALVERN 3RICX A TILE CO. Mooongaheia power Co. MATH!EL*. Louis A. (George 3. Eyerly) 920 Claries 5:.. Weilshurg, W. Ya. Parra Mantois. 11 Chemin de Rcr.de Box 415. Maivem. Ark. MARTIN, Leonard A. (W) Le Vesine: (SiO) France MALYSIAK, Chester (G) 1027 Hickory*. Perrysburg, Ohio Martin Ceramic Supply Co. 8901 Rainier Ave., Seattle 3, Wash. MATHON, Charies Uateriaii Refrartari Soe. p.Aiioni (Owens-Illinois) MANDEL. Charles J. (WI) MARTIN, Ralph H. (WI) Vernon Kilns Via Elia Lombardioi 13 Milano "44. Italy Willette Corp. of New Jersey Codwise Ave. St Reed St. New Brunswick, N. J. MANDLZ. Richard M. (G) Rare Earths, Inc. Box 433, Pompton Plains, N. J. MANN. George H. (G) 2310 E. 52nd St., Los Angeles 58. Calif. MARTIN. Wesley G. (EF) 6054 N. Kent Ave. Milwaukee 17, Wise. (A. O. Smith Corp.) MARTINO. Paul D. (SJ) Canne!ton Sewer Pipe Co. MATHON. J. Charles Material! Reirattari Soc. p.Azioni Via Elia Lombardini 13 Milano 744, Italy MATSON. Frederick R. (GI) 723 Jackson St.. State College, Pa. (Pennsylvania State University) Lake Salubria. Bath, N. Y. (Corning Glass Works) MANNING. R. Douglas (D) Harker Pottery Co. East Liverpool, Ohio MANOUSEK. Miloslav Deinicka 27 Praha VII. Czechoslovakia MANRING, Jack C. (EJI) RJL 1, South Charleston, Ohio (Westinghouse Electric Corp.) MANRING, William H. (G) Caluiaite Co. Box 151. Hamilton. Ohio MANSFIELD SANITARY POTTERY, INC. (Perry E. Draper) Canndton. Ind. MARTINSEN. Rodney E. (M) Timken Roller Bearing Co. 1335 Dueber Ave., S. W. Canton 6, Ohio MARTZ. Joseph A. (R) 535 Riverside Ave., Wellsville, Ohio (McLain Fire Brick Co., Div. of H. K. Porter Co., Inc.) MARTZ. Karl (D) Indiana University Art Center Bloomington, Ind. MARVIN. Claries G. Box 787, Alfred. N. Y. MARWAHA. Xidar N. Bom h Co.. Ltd. MATTESON. Gilbert D. (W) Engineering Library Scintilla Div.. Bendix Aviation Corp. Sidney. N. Y. MATTISON, William F.. Jr. (GI) RJL 3, Lawson Dr., Madison. Conn. (Libbey-Owens-Ford Glass Co.) UAU, K. T. (S) Gaspro. Box 24S4. Honolulu, Hawaii MAUPIN. Addison (RI) 721 Yale Ave.. Terrace Park, Ohio (Claries Taylor Sons Co.) MAURER. James A. (E) 5519 N. Lake Dr.. Milwaukee 11. Wise. MAURER. Robert D. (G) Coming Glass Works, Coming, N. Y. Peifysville. 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) Refractory & Ceramic Works Box 13, Jabalpur 1, India MARX. Lc 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. MAUSER. H. W. Spoorsin gel 68. Delft, Holland (Royal Deiftware Manufactory) MAVOR, Wilfrid (E) Ferro Enamels (Canada) Ltd. Oakville, Ont.. Canada MAXSON, Elwyn L. (M) 1208 Isabel St., Burbank, Calif. Vol. 35, So. 10 (10561 Roster 71 1 II MAY. L. ?. (R / Standard Ultramarine Color Co. Kur.tir.gtcn 3, W. Va. MAYER, Waiter S. (W) Mayer Chir.a Co. Box 561, Braver Fails. Pa. Mayfield. Ma.nviiie j. (\vi) 1327 Aub'jrr.tiaie Ave. Char:anoo?a i, Tena. (American Lava Corp.) Maynard. Fred a. <mj 545 E. 250:h. Euclid, Ohio (Harshaw Chemical Co.) MAYNARD. Frederick H. (G) Coming Glass Works 1 Jackson St., Wellsboro, Pa. MAYS. George A. (S) Box 68. Niles. Calif. (California Pottery Co.) MEDERT, Warren C. (GI) 5320 Melvin Dr., Toledo 14, Ohio (Owens-Illinois) MEEKA. Edward (SI) Metropolitan 3rick. Inc. Box 27, Eist Palestine. Ohio MECLES. John E.. Jr. (G) 7 Washington St., Box 143 Cokeburg, Pa. (Coming Glass Works) MEID. William J. (M) 20J Elm St., Glenview, III. (Lindberg Engineering Co.) MEILING, Gerald S. 1123 Lorraine Dr. Salt Lake City, Utah MEINKEN. Robert H. (B) 2? Myrtle Ave. North Plainneid. N. J. (Beil Telephone Labs.) MEIRESONNE. Arthur C. (G) 700 Village Dr,. Columbus 14, Ohio (Kimble Glass Co.) MEJIA. Lorenzo CM) Colombia Brewers Industries, Inc. 30 Broad St.. New York 4, N. Y. MELOY, C. L. (RI) Res. Dep:.. Rn. .-.406 Bethlehem Steel Co., 3ethlebem. ?a. MENG. Edwin R. (R) National Carbon Co. Box 6037. Cleveland 1, Ohio MENGSHOL, Clarence O. (E) American Radiator dr Standard Sanitary Corp. 1089 Essex St., Richmond, Calif. | .VENN IE. Alan J. ' International House Berkeley 4, Calif. MERCER. Janies W. 3246 Lambeth Circle. Doraville. Ga. MERCK. Waiter J. (RI) 2S Addison Dr., Short Hills, Nf. J. (M. %V. Kellogg Co.) VMoElR. E3D.5I,TNH.o.Ed1w0ar(d19J..56(R) ) Box 1533. Birmingham 1. Ala. (Universal Atlas Cement Co.) MEREDITH. Neii F. (RI) Box 2S1G. R.R. 2. Tiffin. Ohio MERRY. E. B.. Jr.. (SI) Merry Eros. Brick i Tile Co. 415 Masonic Bldg.. Augusta, Ga. MERWIN, Byron W. (W) Parkway Rd., R. R. 2 East Liverpool. Ohio (Hall China Co > MERZ, Kenneth M. 236 L'pson Ln., New Brunswick, N. J. MESSIMER, Lavernc A. iGl) Holophane Co.. Newark. Ohio METAL 4 THERMIT CORP. (George C. Beta) 100 Park Ave. New York 17, N. Y. METZ. G. F. (M) 816 Cypress Rd,, Vero Beach. Fla. (Consulting Engineer) METZ. Gilbert 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 ?. Wright Air Development Center Area B, Wright-Fatterson AFB, 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. Sox 622. Annandale. Va. (U. S. Tariff Commission) MEYERHOFER. E. A. Meyerhofer 4 Co.. Forchstrasse 2 Zurich 32. Switterlar.d MEYER-SCHOLER, Hans Carl Spitteierstrasse 1 Liestal. Switzerland (Tonwerk Lausen AG) MEYSEL. John J. Refracton Ltd. Zurich 2 Genfcrstrasse. Zurich. Switzerland MICHAEL. Frank L. (El) 319 Norbourr.e Blvd., 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. Inc. 80 S. Dover, Denver 15, Colo. MICHEL. S. Etablissements G. Devineau 26. rue Lafayette. Paris 9*. France MICHELOTTI. Joseph E. (El) 164 E. Essex Ave., Lansdowne. Pa (Vitro Mfg. Corp-) MICHENER. John William (G) Research Laboratory Owens-Coming Fibergla? Corp. Newark. Ohio MICKWITZ. Alexander von (B) 701 Main St.. Latrobe, Pa (Stupakotf 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., Horr.eli, N. Y. MILAN!. Hello Sox 925. Alfred. N. Y. M'LDWOFF, 3er. (G) Bent Glass Works, Inc. 35-25 126th St. Richmond Hill 13. N. Y. MILILLO. Frank A. (EJ) 167 Lexingror. St. Easr 3ostcr. 23. Mass, i Arthur D. Little. Inc.) MILLAR. N. S. C. Frit Factory Radiation Group Sales Ltd., Grappenhal Works Warrington, Lancs.. England MILLER. Alan D. 542 E. 33rd St.. Seattle, Wash. MILLER. B. L. (W) Royal Cnina. Inc.. Sebring, Ohio MILLER, Boyd C. (M) Miller Equipment Co. Box 1566. Salisbury, N. C. MILLER. E. R. (W) Washington Porcelain Co. Willow St.. Washington, N. J. MILLER, Fred W. (R) Franklin Manor, 114 Franklin St. 31cg. 3, Apt. 3-2, Morristown. N. J. (Carborundum Co.) MILLER. Grant E. (E!) Ferro Corp.. 4150 E. 56th St. Geveland 5, Ohio MILLER, Harold (E) 5736 N. Talinan Ave., Chicago 45, 111. (Ohmite Mfg. Co.) MILLER. Harold D. (M) 1S9 Circle Dr., Plancome Manor Long Island. N. Y. (B. F. Drakenfeld 4 Co.. Inc.) MILLER. Henry E. (R) Chicago Wheel 4 Mfg. Co. 1101 )V. Mor.rce St.. Chicago 7, III. MILLER. Howard L. (RI) Libbey-Ower.s-Ford Glass Co. 3ox 4273. Charleston. W. Va. MILLER. James L. (R) 131 Peach S:.. Park Forest, ill. (Norton Co..' MILLER. John 3. (MI) i nird St.. Lewiston. N. Y. fTitam.um Alloy Mfg. Div.. Nattor.ai Lead Co.) MILLER. John W. (W) New Castle Refractories Co. New Castle. ?a. MILLER. Jorge Smith Casiila 137. CristaJerias de Chile S. A. Santiago. Chile MILLER. Marlin. Jr. 1733 Southwood Ave.. South Bend, Ind. MILLER. Maurice. Jr. (X) 484 E. Beechwold Ave. Columbus 14. Ohio MILLER. O. E. (R) Pyro Refractories Co. Box 488. Oak Hill. Ohio MILLER. Ralph E. (G) 365 GJen Ave., Elmira. N. Y. (Coming Glass Works) MILLER. Robert A. (GF) 1211 Carlisle St.. Tarentum. Pa. (Pittsburgh Plate Glass Co.) MILLER. Russel A. (WI) 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. MILLER. Vincent P. (M) Miller Pottery Engineering Co. 2300 Palmer St. Swissvale. Pittsburgh 18, Pa. Roster 73 MILLER. W. D. (G) Owens-Illinois. Box 1019 Oakland 4, Calif. MILLER, Wiiliam A. (R) Carborundum Co., Falconer, N. Y. MILLER. William A. 306 E. Madison St.. Gibsonburg, Ohio MILLICAN, Kenneth L. (R) Aluminum Co. of America 3300 Missouri Ave., East St. Louis, 111. MILLIGAN. Chester E. (R) Electro Refractories & Abrasives Corp. a814 Loma Vista Ave. Los Angeles. Calif. MILLIGAN, Lowed H. (B) Norton Company, One New Bond St. Worcester 6, Mass. MILLIKEN. Edward C. (SI) 444 W. North Ave. East Palestine, Ohio (Natco Corp.) MILLIKEN, Frank H. (S) Bowerston Shale Co.. Bowerston. Ohio MILLIKEN. Joseph E. (SJI) I JOS South St., Pottstown, Pa. < Robinson Clay Product Co.) MILLIKEN, William M. Cleveland Museum of Art Cleveland 6. Ohio MILLIKEN. William U. (SJ) Box 23. Bowerston. Ohio MILLMAN, Nathan r M) J. M. Huber Corp., Huber. Ga. MILLS. G. Alexander (B) Houdry Process Corp., Box 427 Marcus Hook. Pa. MILLS. R. Gerald (B) General Electric Co. Commonwealth Edison Project 2155 S First St.. San Jose. Calif. MILTON BRICK CO.. LTD. (D. T. Green) Box 554 Milton. Ont.. Canada MIXARO. Richard A. '3) 3rookneld Engineering Labs.. Inc. 240 Cushing St.. Stoughton. Mass. MINER. Reginald R. (R) 412 W. Chestnut Ave., Metuchen, N. J. (Carborundum Co.) MINK. John D. (G) R. R. 2. Dunkirk, Ind. (Armstrong Cork Co.) MINNICX. L. John (R) 305 Bover Rd.. Cheltenham. Pa. (G. it W. H. Corson) MINSHALL. John 3. (R) Kaiser Aluminum & Chemical Sales. Inc. 3 Gateway Center. Pittsburgh 22, Pa. MINTON. G. 2. (GI> Pittsburgh Plate Gloss Co. Research Lab., Creighton. Pa. MISSBACH. George E. (M) Morehouse Industries 707 Henry Grady Bldg., Atlanta. Ga. MISSISSIPPI GLASS CO. (Charles J. Youngblood. Jr.) 88 Angelica St.. St. Louis 7, Mo. MITCHELL. Lane (BFI) School of Ceramic Engineering Georgia Institute of Technology Atlanta. Ga. MITCHELL. Russell G. (M) R. R. 1. Dutch Ridge Rd. Beaver. Pa. (McDanel Refractory Porcelain Co.) MITOFF. Stephan P. (B) General Electric Co., Res. Lab. Metallurgy 5c Ceramics Dept. Box 1088, Schenectady, N. Y. MITRA. H. K. (I) 12 A Road East Jamshedpur E.R_, India (Tata Iron 5c Steel Co.. Ltd.) MIXER. William G.. Jr. (W) 315 W. Lima St.. Findlay, Ohio* (Radio Corp. of America) MOCHEL. Mrs. Ellen Lunn (G) Corning Glass Works. Corning, N. Y. Vol. :tff No. 10 (195G) MOCHEL. John M. (B) 97 Hil.'cres: Dr., Painted Post. N. Y. (Corning Glass Works.) MOCKRIN, lsadorc (B) Pennsylvania Salt Mig. Co. Research 4 Development Div. Box 4383 Chestnut Hill P.O. Philadelphia IS. Pa. MOE3US. C. R. (M) United Clay Mines Corp., Trenton. N. J. MOFFAT, John. Jr, (R) 12255 Miranda St. North Hollywood, Calif. (Gladding, McBeaa 4 Co.) MOFFAT, John W,, Jr. (R) Babcock & Wilcox Co. 2730 Koppers Bldg., Pittsburgh 19, Pa. MOFFETT. Robert A. (RI) North American Refractories Co. 1012 National City E. 6th Bldg. Cleveland 14, Ohio MOGEY, Leona (G) Raytheon Manufacturing Co. 55 Chapel Sr.. Newton, Mass. MOHANTY, Gajendra Nath (I) 6 Kalimati Rd.. E., Tatanagar, India MOHL, Helmuth (W) Fabrica de Loza **La rivorica" S.A. Palma Norte 508, Despacho 312 Mexico 1, D. F. MOHLER. Neal F. (SI) 206 Dcgwood, Park Forest, 111. (Industrial Publications, Inc.) MOHR, William C. (WI) Shenango China. Inc.. New Castle, Pa, MOHUN, William A. (R) General Abrasive Co.. Inc. 2000 College Ave., Niagara Falls, X. Y. MOLLER. J. A all Porsgrunds Porselaensfabrik Porsgrund. Norway MOXACK, A. J. (G)' 237 Mortimer Ave.. Rutherford. X. J. (Consulting Engineer) MONAGLE. William T. (R) Lloyd Ave.. Stanhope, N. J. (Reaction Motors. Inc.) MOXETA, Fausco Via Mambrerti 9, Milano, Italy (Ditta Giuseppe Moneta) MONO. Lewis E. (R) S5C6 Loughborough ?:. Chevy Chase 15, Md. (National Bureau of Standards) MONINGER. Richard E. (W) Harding Ave.. East Liverpool. Ohio (Wellsviile China Coj 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. (WFI) 12 W. Jeffrey PL, Columbus 14, Ohio (Consulting Engineer) MONTGOMERY, Eldwin C. (GI) Libbey-Owens-Ford Glass Co. Jeweila Rd.. Shreveport. La. MONTGOMERY. Thomas B. (G) Pittsburgh Plate Glass Co. 632 Ft. Duquesne BIvcL 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 EL (BI) 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 Wii.*or. Ave.. Pasadena, Calif. MOORE. Charles H. (3) ?. R. Mai'.ory 4 Co. 3029 E. Washington St. Indiar.apoiis 6. ind. MOORE. Dwtgh: G. (EFI) Mineral Products Division National Bureau of Standards Washington 2S. D. C. MOORE. K. Dept, of Giass Technology University of Shcmeid EJznr.eld. Northumberland Rd. Sheffield 10, England MOORE. Her.ry (G) 38 Porter Ave. West New Brighton Staten Island. N\ Y. (Metro Gloss Co.) MOORE. James M. (S) Ashe Brick Co.. Van Wyck, S. C. MOORE. Joan G. (W) 405 E. ?Gpiar St.. Robinson 2, 111. (Case Mtg. Corp.) MOORE. Matthew S. Pre*Fao. 241. Clemson College Clcmson, 5. C. MOORE & MUNGER (Murray Rushmore. Jr.) 33 Rector St. New York 6. N. Y. MOORE. Richard S. (RI) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22. Pa. MOORE. Robert E. 1607 Campus Rd., Toledo 6, Ohio MOORE. Robert r. (R) 3345 Forbes St., Pittsburgh 13, Pa. (Jones 4 Laughlin Steel Co.) MORAN. J. J. (G) Landis Ave. 4 Spring Rd. Vir.eiand. N. J. (Kimble Glass Co.) MORELL. N. L. (R) 313 Union 3ank Bldg., Bethlehem, ?a (N. L. Morel! Co.) MORENA. Alfred (WI) 90 Hazel St.. Cifton. N. J. (Mucon Corp.) MORESCO. Albert J. Gen Del.. Alfred. N. Y. MORGAN. John M. -.WJ) 42 Laurel Dr., Scranton. Pa. (General Electric Co.) MORGAN. Raymond W. (R) R. *,V\ Morgan Co.. 11695 Woodbine Detroit 39. Mich. MORGAN. Reginald W. (G) Ball Brothers Co., Inc., Muncie. Ind. MORGAN. Robert A. (WI) Pass 4 Sevmour. Inc., Syracuse, N. *) MORGAN. Stuart F. (WI) "Marshnere". Mattapoisett Neck Rd. Mattapoisett. Mass. (J. I. Paulding, Tnc.) MORGAN. Willard L. (G) 1203 Moundview Ave.. Newark, Ohit (Owens-Coming Fiberglas Corp.) MORGAN. W. R. (G) Sterling Grinding Wheel Co. Box 301. Tiffin. Ohio MORN1N. Bob L. (WI) 3885 Pierce, Wheatridge. Colo. (Coors Porcelain Co.) MOREEN, Georges 42 Bd Guillaume Van Haeleo Forest. Brussels, Belgium (Diamant Boart) MORRIS, Ernest D. IS Irby Rd., Heswall, Cheshire. England (Morgan Refractories Ltd.) MORRIS. George J. (E) Research Dept.. Ferro Corp. 4150 E. 56th St.. Geveland 5, Ohio Roster MORRIS, Irvine H. (\V) Ferro Corp., 4150 . 56th St. Cleveland, Ohio MORRIS, John L. f\V) 14427 AJIinghaci, NorvaJk, Calif. . (Durochrcrne Decaicoraania Co., Inc.) MORRIS. W. C. (G) 1251 Mayneld Ridjje, Oeveiand 24, Ohio (Harshaw Chemical Co.) MORRISON, 3oone;H. (G) 2. r. Draxenteid 4* Co., Inc. 3ox 519, Washington, Pa. MORRISON. Neil T. (M) Bell Research. East Liverpool, Ohio MORRISON. R. F. (M) 384 Gui: Rd.. Elyria, Ohio (Harshaw Chemical Co.) MORRISON. Wallace S. (M) Illinois Water Treatment Co. 840 Cecar St.. Rockford, 111. MORSE, Arthur . (GJ) 2735 Woodstock.i Columbus, Ohio (Federal Giass Co.) MORSE. Clifford E. (G) Dominion Glass Co., Ltd. Box 190, Montreal, Que., Canada MORSE, George T. (WF) Smooth-On Mfg. Co. 572 Communipaw' Ave. Jersey City 4, N. J. MORTON POTTERY CO. (S. W. Rapp, Jr.), 315 W. Jefferson St. Morton, III. MORTON, William A. (G) 46 Standish 3Ivd.,. Mt. Lebanon Pittsburgh 23, Pa'^ (Lofrus Engineering Corp.) MOSAIC TILE CO. i Zanesville. Ohio ; MOSER, 3erthold B. Inaostria Cercmica. Ltda. Apartado Aereo 4829, Bogota. Colombia MOSER, John 3. (B) ?43 Ashland Ave., Evanston, 111. (Northwestern University) MOSES. John L. (RIV1 1219 Acorn Dr.. Dayton 9. Ohio (\V. H. Kiefabcr Co.) MOSS. LeRoy L. (Ell 3553 Ingieside Rd.' Shaker Heights -2.! Ohio ( Ferre Cor?, i MOTSCH. F. R. (G- F>rrer-"nrren C.Ias* Co. Marion. Ini. MOULD. Richard E. (G) Preston Labs.. Box M9. Butler. Pa. MOULD, W. J. ;W) Steubenville Pottery Co.. Box 1030 Steubenville, Ohio MOUNT CLEMENS POTTERY CO. (Charles E. Doll) Mount Clemens. Mich. MOURAUD. Paul H. (W) M Ir.gieside Rd. Upper Montclair. N. J. (Page-Madden Co lt 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.I'lRI) School oi Mineral Engineering University of Washington Seattle S. Wash. MUELLER. Ferd A. (R) 1260 Rudd. Canon City. Colo. (Freeman Fire Brick Co.) MUELLER. 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. .!.}. No. 10 (1 n.lfiI MULL, Lee R. (G) Owens-Coming Fibergias Corp. Barrington, N. J. MULLADY, Russell E. (M) 159 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-Wrigh: Corp.) MULLER, Gerhard Staatliche Ponellan-Manufaktur Berlin Hartmannstrasse 1-J (12a) Selb/Oberfr. U. S, Zone, Germany MULLER. Max (RI) Basic, Inc.. 845 Hanna Bldg. Cleveland 15, Ohio MULLER. Robert Emaillerie de St. Maurice 29, Rue du Val d'Osne St. Maurice (Seine), France MULLIGAN. Edwin F. (E) Jones Metal Prodttr: Co. We>t Lataverte. Ohio MULLITE REFRACTORIES CO. (Edward L. Bohn) 10 Canal St.. Shelton. Conn. MULROY. James P. (El) 965 Lafayette Ave., Buffalo 9, N. Y. (Buffalo School Dept.) MULRYAN. Henry (W) Sierra Tale & Clay Co. Box 290. South Pasadena. Calif. MULVANE. O. E. (El 4128 N. 21,t St.. Milwaukee 9, Wise. (A. O. Smith Corp.) MUNDY. O. S. (WT) 426 Park Ave.. Wheaton. III. (Western Electric Co.) MURGATROYD. John B. Rockware Glass. Ltd.. Roclcware Ave. Greerforri. Middlesex. England MURPHY. Edward J. (W) Charles 3. Chrystal Co.. Inc. S3 Park ?].. New York 7. N Y. MURPHY Harrv T (R) Climax Fi-e Brick Co.. Climax. Pa. MURPHY. Remington M. (W) 7744A Wagner Way t.ynnewnod Gardens Elkins Park 17. 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. (WI) Redding Place. Towaco. N. J. (B. G. Corp.) MURRAY. Maurice J. (B) Universal Oil Products Co. 30 Algonquin Rd.. Des Plaines, III. MURRAY. Robert S. (G) B. F. D taken (eld & Co., Inc. Washington, Pa. MUSSELMAN. H. G. (G) 4413 Old Frederick Rd. Baltimore 29, Md. (Carr-Lowrey Giass Co.) MUTTITT. F. C. (R) Algoma 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 Qay Co. Box 127, Salt Lake City, Utah MYERS. Charirs V. (W) Eljer Co., Third Ave.. Ford City, Pa. MYERS, Thomas j. (G) 2525 Seventh Ave., Altoona. Pa. (Sylvar.ia Electric products, Inc.) MYERS, Wilbur C. (B) 2711 W. 129th St.. Gardena. Calif. (National Cash Register Co.) MYZRSON, Martin (W) Myersor. Tooth Corp. 90 Hamilton 5t.. Cambridge. Mass. MYGDAL. Rolf L. (W) 1460 Painter Circle, Apt. 3 St. Laurent, Que.. Canada (Pilkington's Tiles, (Canada) Ltd.) MY1NT. Maur.g 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) NAGAN, Harold R. 8132 Sepuiveda PI., Van Nuys, Calif. NAKAMURA, H. Henry (B) Armour Research Foundation of lilinoii Institute of Technology 3427 S. Federal St., Chicago 16. III. NAKAMURA, Yoshikazu Shoko Glass Co., Ltd. 1. 4-chome. Ginza Chuo-ku. Tokyo, Japan NANCE. Taylor E. (R) 5223 Alder Dr.. Mission. Kans. (Owens-Coming Fibergias Corp.) NAPIER. John 3. (S) 3574 Napier A.ve.. Macon. Ga. (Cherokee Brick 4 Tile Co.) NAPOLITANO. Albert (G) National 3ureau of Standards Dept, of Commerce Conn. Ave. k Van Ness St. Washington 25. D. C. NARASIMHAN, Malur D. 5tti. 4-051. Ceramics Div. Massachusetts Institute of Tech. Cambridge 39. Mass. NASH. Harold S. (DF) 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. 3. Henby) 549 W. Washington Blvd. Chicago 6. III. NATIONAL INDUSTRIAL SAND ASSN. (V. P. Ahearn) Munsey 3ldg,, Washington 4, D. C. NATIONAL LEAD CO. (Alex Stewart) 111 Broadway, New York 6. N. Y. NATIONAL LIME AND STONE CO. (L. G. Love) First National Bldg. Findlay, Ohio NATIONAL REFRACTORIES CO- INC (R. A. Hitchins) 17th Floor Lewis Tower Bldg., 223 S. 15h St. Philadelphia 2. Pa. NATIONAL RESEARCH CORP. (Philip J. Gough) 70 Memorial Dr. Cambridge 42, Mass. NAUDOT, Jacques Cerabati. 10 Rue Pasteur Pont Sainte Maxenee (Oise). France NAVIAS. Louis (BF) Research Lab., General Electric Co. The Knolls, Schenectady, N. Y. Roster 77 / NAVRATIHL. Hans Jahnstr. 3, Lauf/Pegnic: Bavaria, Germany (Sembach i Co) NEAL, James E. (R) 164 Sandforc Ave. North Plainr.eld, N. J. (Johns-Manvilie, Inc.) NEALO.V. Terence ?. Edward Curran Engineering, Ltd. Cardiff. Wales . ZDRE3ERG. Roy E. G. f XJ) a 15 Putnam Ave., Zanesville, Ohio NEEL. Lee. Ill Box 2546. Georgia Tech., Atlanta, Ga. NEELY, Homer E.. Jr. (G) 404 E. 11th Ave., Tarentum, Pa. (Pittsburgh Place Glass Co.) NEFF, Edward D. (P.) Box 205, Templeton. Pa. (Harbison-Walker Refractories Co.) NEFF, John M. (S) Armour Research Foundation 10 W. 2Sih 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., 3333 N. 27th St. Milwaukee 1, Wise. NELSON, James A. (R) University of Illinois 204 Ceramics Bldg., Urbana, III. NELSON. Richard P. 8520--32nd Ave., X. W. Seattle 7, Wash. NELSON, Robert E. (G) 20 Spring S:.. Seneca rails, X. Y: (Sylvania Electric Products, Inc.) KELSON, Robert T. (R) Columoia-Ger.cva Steei Co. Box 310, Provo, Utah NELSON. Wiiliam I. (G> 118 Mary St., Binghamton. N. Y. (Soivay Process Div., Allied Chemical & Dye Corp.) NERENSTONE. Marc iB) 10232 Frar.icatown Rc. Pittsburgh 33, ?a. (Westirghcuse Electric Corp.) NETTER. Wiliiam S. (G) Keystone Abrasive Wheel Co. Gregg cc Hammond Aves.. Carnegie, Pa. NETZSCK. Erich Mascbir.enfabrik Gebruetier Xetzsch Werkstrasse 19 Seib v'Bayerr.;, Germany NEW. Ryiand J. (S) National Sewer Pipe Ltd. Box 56. Oakville. On:., Canada NEWARK, Frank r. (W) Aluminum Co. of America 1450 Terminal Tower Cleveland 13, Ohio NEWARK, Mania (M) Simonds Abrasive Co. Tacooy 5c Fraiey Sts. Philadelphia 37. Pa. NEWBOLD GENERAL REFRACTORIES, LTD., Gavey St. Mayfield. N. S. W.. Australia NEW CASTLE REFRACTORIES CO. (R. W. Rowland) New Castie, Pa. NEWCOMB. Rex ford, Jr. (El) 915 Dodge, Lake Geneva, Wise. (RX Chemical Co.) NEW JERSEY PORCELAIN CO. (J. M. Gilnllan) Box 908 Trenton 5. N. J. NEWKIRK. Terry F. (B) General Electric Co. Power Tube Dept. Schenectady, N. Y. t. NEWTON, Avery C. (R) The Refractories Institute First National Bank Bldg. Pittsburgh 22, Pa. Vol. 35, No. 10 (1050) NICHOLSON. Albert H. (D) Federal Glass Co. SIS Innis Ave.. Columbus 7. Ohio NIEMAN. A. H. ( G > Ohio Lime Co., Woodville, Ohio NIELSEN. H. Bach (Ml Nichols Engineering & Research Corp. 70 Pine St.. New York 5, N. Y. NIKLEWSKI, 8. K. Main E.namei M:g. Cj . Ltd. Gothic Works. Angel Rd. Edmonton, London. N. 13, England NILES FIRE BRICK CO. (Carey E. Lindsay) 165 E. Park Ave.. Niles, Ohio NIPPON TOKI XAISHA. LTD. (Jun Isagawa) -- 1; Noritakeshinmachi. Nishiku. Nagoya, Japan N'ISULA. Chester A. (R) 716 Main St.. Riverton. N. J. (Simonds Abrasive Co.) NIXEN. David (G) C3S-Hytron, Kent 4 Warren Sts. Newburyport, Mass. NIYOGI. D. P. M/S Bengal Enamel Works Ltd. P. O. Bengal Enamel Palta (24 Parganas) West 3engal. India NOBES, Frederick L. Carborundum Co.. Ltd.. Trartord Park Manchester 17. England NOBLES, Eugene L. (E) 3714 Torrington Ave.. Cleveland 29, Ohio (Ferro Corp.) NOBLES, Melvin A. (B) Oklahoma A. & M. College Mechanical Engineering Dept. Stillwater, Okla. NOCK. Charles J. (R) 3IS Front St.. Berea, Ohio (Nock Sc Son Co.) NODA. Tokiti Dept, of Applied Chemistry Faculty of Engineering Nagoya University Chikusa-ku. Magova. Japan NOD UR FT, Russ E. (W) 9353 Parrot. Downey, Caiif. (Vernon Kilns) NOE, James T. (S) 41 i Madison Ave.. 3rookvi!!e. Pa. (Hanley Co.) NOHLE. Richard C. (SI) C'.aycrai: Co. Box 866. Columbus 16. Ghio NOLAN. William F. Box 251. Alfred. N. Y. NORANTE. Nicholas J. (W) 609 Spring St- Latrobe. Pa. (Stupakoff Div.. Carborundum Co.) NORDBERG. Martin E. (GF) 134 E. Fourth S;.. Coming. N. Y. (Coming Glass Works) NORDGREN. Harry Aktiebolagct Gustavsberg Fabriker Gustavsberg, Stockholm, Sweden NORDMEYER. Rudy L. (S) Valley Brick 4 Tiie Co.. Boa 353 Mission. Texas NORDQUIST. Clarence E. 4328 Bagiey Ave., Seattle 3, Wash. NORDQUIST, Lawrence E. (BJ) Comeil-Dubiiicr Electric Corp. 1605 Rodney French Blvd. New Bedford, Mass, NORDYKE. J. S. (MF) Hammond Lead Products. Inc. 1602 Oliver Bldg., Pittsburgh 22. Pa. NORMANDE.\U, Pierre (D) 3660 Hutchison Sh Montreal 18, Que.. Canada NORRIS. Charles R. (W) 4024 Diehl Ave., Cincinnati 36, Ohio (Charbeaux Pottery) NORRIS-THERMADOR CORP. (Edgar H. Freeman), 20118 E. Valiev Walnut. Caiif. NORTH AMERICAN PHILIPS CO- INC. (C. J. Woods) Research 4 Control Instruments Div. 750 S. Fulton A.ve., Mt. Vernon. N. Y. NORTH AMERICAN REFRACTORIES CO. (Robert A. More::) 1012 National City E. Sixth Bldg. Cleveland Ohio NORTHWESTERN GLASS CO. (Edward S Campbell) 3301 E. Marginal Way. Seattle a. Wash. NORTHWESTERN TERRA COTTA CORP. i Burnette Purcell) 1750 Wrigfctwood Ave., Chicago 14. HI. NORTON. Charles L,, Jr. (RF) Babcock 4 Wilcox Co . 161 E. 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 "B". Box 3604 Wrigbt-Patterson AFB, Ohio NORWOOD. J. Nelson (Life. X) Alfred University. Alfred. N. Y. NOVY, Otto R. (E) Chicago Vitreous Corp. 1425 S. 55th Ct.. Cicero 50. 111. NOWAK. John M. (B) Bell Aircraft Corp.. Box 1 Buffalo 5. N. Y. NOWELL. Dorroh L- Jr. (S) 202 Broad St., Augusta. Ga. (Merry Bros. Brick 4 Tiie Co.) NUSSBAL'M. Theodore 170 Ellis Ave., Irvington, N. J. NYQU1ST. Rcy A. ;C'5650 Beechway 31vd.. Toiedo 14, Ohio (Libbey-Owens-Ford Glass Co.) o OAKLEY. W. W. (GF) Box 35. Coming. N. Y. (Corning Glass Works) 0'3ANNON. L. S. (E) 2239 rarieigh Rd.. Columbus 21. Ohio (Battelle Memorial Institute) OBERST. Cair R. (M) Industrial Ceramic Products. Inc. 96S 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,, BRICK 4 TILE CO. (Elmer E. Apt) Springfield, Minn. O'CONNELL. Thomas B. (G) Libbey-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. 3-3 Trenton 8, N. J. (O. Hommel Co.) O'DELL. Harold L. (W) Hamilton Porcelains Ltd. 38 Elgin St- Brantford, Ont- Canada ODOM, Paui R. (M) B-3 Winship Gardens. Macon, Ga. (J. M. Huber Corp ) OESCH. Robert B. fS) 401 W. Carolanne Dr.. Marshal!, Texas (Marshall Brick Co.) Roster 79 OESTERLE, Henry (E) , Roesch Enamel A Mfg. Co. W. Main A N. 24th Sts. Belleville, 111. OESTERLE. Robert A. (E) 2427 W. Main, Belleville, 111. (Rcesch Enamel A Mfg. Co.) OGDEN, D. ?. (S) Ogden Engineering Co. Box 21S, Ottawa, III. OGDEN', Ellsworth ?. (RF) Box 337, Granby, Colo. (Harrop Ceramic Service Co.) OGDEN', John T. (GF) Class Industry S3 W. 42nd St., New York 36, N. Y. OGDEN. William D., Jr. (RI) Mackeyville, Pa. (North American Refractories Co.) OHIO BRASS CO. (J. J. Taylor) Barberton, Ohio OHIO CLAY CO. (Norman E. Denison) Box 1776. Cleveland S, Ohio OHIO LIME CO. (A. H. Nieman) WoodviUe, Ohio OHLIGER. Lewis P. (G) 209 Rtdgeview Dr. East Rochester, N\ Y. (Bausch Sc Lomb Optical Co.) OHNSORG. Roger W. Box 1049, Alfred. N. Y. OHNYSTY, Basil (RJ) University of Illinois, 204 Ceramics Bldg., Urbana, 111. OLD HICKORY CLAY CO. (Lee F. Powell) Box 271. Paducah. Ky. O'LEARY, W. J. (R) 24 Seminole Ave., Claymonr. Dei. 1E. I. cu Pont de Nemours A Co.) OLENCHUX. Daniel L. (R) 1300 Laird Ave.. Aliquippa, Pa. (Jones 4 Laughlin Steel Corp.) OLIVER. D. A. Messrs. Wm. Jessop Sc Sons Ltd. Brightside Works. Sheffield, England OLIVER, John C. (E) Porcelain Enamel Institute 1145 19th St.. N. W. Washington 6, D. C. OLIVERIC. William (G) Rolland Glass Co.. Box 232 Clarksburg, W. "a. OLSEN. Eric (D) R. R. 63. Dundee, 111. (Haeger Potteries, Inc.) OLSEN. Jean M. (G) . E. I. du Pont de Nemours A Co.. Inc. Electrochemicals Dept. Wilmington 98. Del. OLSEN. RangwaId S. (El) 1137 Grant St., Evanston. 111. (Armour Research Foundation) OLSON, E. E. (G) A. H. Heisey A Co.,- Newark, Ohio OLSON, Hjalmar Akriebolaget Guseavsbergs Fabriker Gustavsberg, Sweden OLSON. Ole A. (R) S Wrenwood Ct. Webster Groves 19. Mo. (Laclede-Christy Co. Div. H. X. Porter Co.) ONONDAGA POTTERY CO. (R. H. Pass) 1856-58 W. Fayette St. Syracuse 4, N. Y. ORAVEC, Joseph A. (S) 3731 N. Newland 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 (Albert L. Xreuer) 7425 Thomas Sc. Pittsburgh 8, Pa. Vol. 35. No. 10 (1956) ORMSBY. Walter C. (W) National Bureau oi Standards Washington 25, D. C. ORNELLA. LeRoy F. (CJ) 3206 Upton Ave.. Toledo 6, Ohio (Glass Fibers, Inc.) ORR, David 3. R.R. 2. Or.eonta, 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. Curtts D. (W) A C Spark Plug Div. General Motors Corp. 1300 N. Don Hwv.. Fiint 2. Mich. ORTMAN, Fred 3. (RF!) Gladding, Mc3ean A Co. 1275 Harrison St. San Francisco 3. Calif. ORTON, EDWARD. JR.. CERAMIC FOUNDATION (J. L. Carruthers) 1445 Summit St. Box 146, Sta. A, Coiumlius I. Ohio ORTON. Mrs. Edward. Jr. 39 W. Torrence Rd.. Columbus. Ohio ORZANO. Michael J. (SI) Claycraft Co. Box 866, Columbus 16, Ohio OSBORN. Elburt F. (B) College of Mineral Industries Pennsylvania State University University Park. Pa. OSBORN, Walton O. (R) North American Refractories Co. Water St.. Lock Haven, Pa. OSBORNE. David G. Lemington Glass Works Ltd. Lemington Neweastle-on-Tvne 5. England 0STERH0L7Z. Carl (R) 5 Mayneid ?1.. Metuchen. N. J. (Valentine Div.. A. ?. Green Fire 3riek Co.) OSTRANDER. Eugene C. (G) Kopp Glass. Inc. Box 3235. SwUtvttle. Pittsburgh IS. Pa. OSTRANDER. Van R. 13) Encevco Coro. 161 E. California St.. Pasadena, Calif. OTLEY. J. D. i 5 John 3. Xeilv Inc. of Penn. 1720 Cherry St.. Philadelphia 3, Pa. OTRHALEX. joseph V. (W) Wyandotte Chemicals Corp. Wvandotte. Mich. OTTAWA SILICA CO. (George A. Thornton) 3ox 437 Ottawa. HI. OTTO. George H. (S) 53 W. Jackson 31vd., 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 Refraerories Co. East Palestine, Ohio OWEN, J. D. ' R. Fowler. Ltd.. Fitiroy St. Marriclcville. Sydney. N.S.W., Australia OWENS-CORNING FIBERGLAS CORP. (A. C. Siefert) Newark, Ohio OWENS-ILLINOIS (W. D. Miller) Box 1019. Oakland 4, Calif. OWENS-ILLINOIS (E. W. Summers) Technical Center 1700 .V. Westwood Ave., Toledo 7, Ohio OWENS. James S. (W) Champion Spark Plug Co., Ceramic Div 8525 Butler Ave.. Detroit 11. Mich. OXLEY, Charles A. (V.'J) 1503 Park 5;., Robinson. HI. (Case Mfg. Corp.) P PABST. John G. (M) 552 N. Mam St.. Butler. Pa. (Saxonburg Ceramics) PACHL, Margaret (D) University of North Dakota Ceramics Dept., Grand Forks, N. D. PACIFIC CLAY PRODUCTS (John D. Fredericks) Box 2173. Terminal Annex Los Angeles 54, Calif. PACIFIC COAST BORAX CO. (M. H. Pickard) 100 Park Ave.. New York 17. N. Y. PACKMAN, Willard D. (Wl) E. M. Knowles China Co. East Liverpool. Ohio PADEN CITY POTTERY CO. (Merrill C. Sondles) Paden City. W. Va. PADFIELD, Ralph C. (R) 2990 Avon Rd., Bethlehem, Pa. (Bethlehem Steel Co.) PADILLA, Federico Apartado Postal 26783, Mexico, D. F. (Electroceramica, S. A.) PAFF. John A. (G) 232 N. Sixth St., Reading, Pa. (Willson Products. Inc.) PAFFORD. Ray W. (SFI) Acme Brick Co. Box 425, Fort Worth 1, Texas PALADINO, Albert E., Jr. Raytheon Mfg. Co.. Res. Div. Waltham 54, Mass. PALMER. Delos M. (D) 4401 Jackman Rd., Toledo 12, Ohio (Delos M. Palmer A Associates) PALMER, Rufus N. (M) 476 Broadmoor Ave., Pittsburgh 34, Pa. (Consultant) PALMER. Willard E. (SI) 768 N. Cross St. Newcomerstown. Ohio (Cay Citv Pipe Co.) PALMERI. Victor R. (E) Hermetite Corp. 702 3eacon Sc.. 3oston 15. Mass. PALMOUR, Hayr.e HI (BI) 3ox 204. Signal Mountain, Term. 'American Lava Corp.) PALTZER. Clifford (XJ) 1100 Peace St.. Peila. Iowa PANGELS. Alfred A. (WJ) Ave. Foiar.co 18. Mexico S. D. F. (Sanitarios "El Aguila" S. A.) PANGELS. Heim J. (W) Mosaic Tile Co. Pershing Rd.. Zanesville, Ohio PAPER MAKERS IMPORTING CO.. INC. (Charles Brian) 44 S. Second St., Easton, Pa. PAPIER. Harry (S) Natco Corp., Box 267, Cordova, Ala. PAPPIS. James 433 Brookline Ave.. Boston 15, Mass. PARCEL. Martin W. (W) Robertson Mfg. Co. Box 848. Trenton 5. N. J. PARIKH, Niranjan M. (B) Metallurgy Dept. Scientific Laboratory Ford Motor Co.. Dearborn. Mich. PARKER. Giidden M.. Jr. (D) Gtidden Pottery, Inc.. Alfred. N. Y. PARKER. Harry (BI) 1015 Quebec Terrace Silver Spring, Md. (National 3ureau of Standards) PARKER. Henry F. (G) Pittsburgh Plate Glass Co. Creighton. Pa. Roster SI PARKER. Jamcb \V . Jr. t S ) 7 -- I r Shake.-peare Rd. Columbia. S. C. (Carolina Ceramics. Inc.) PARKER. Leon ;Gj H. I. Thompson Fiber Glass Co. 1733 Corco.a St., Los Angeles 7, Calif. PARKER. Raymond W. (S) Alliance Clay Product Co. Bex 7-Jo. Alliance. Ohio PARKISON. Robert G. Noble Hall. Rm !U. Champaign, III. PARMAN. Donaid \V. 2105 Seventh Ave.. N-. Renton, Wash. PARMER, Jess H., Jr. (G) Owens-Illinois, Technical Center 1700 N. Westwood Ave.. Toledo 7. Ohio PARNHAM. H. General Refractories Ltd. Wcrksop, England PARSON, James A. (WO 6217 Broadway, Indianapolis 20, Ind. (Vitrcseai Corp.) PARSONS. Douglas E. (S) Building Technology Division National Bureau of Standards Washington 25. D. C. PARSONS. J. R. (R) Chicago Fire Brick Co. 7531 S. Ashland Ave., Chicago 20, 111. PARTINGTON. Philip A. Box 737. AUred. X. V. PASCHAL, Forrest A. (S) Box 2S9. Siler City. N. C. /'Huber*Warco Corp.) PASK. Joseph A. (XFI) Division of Mineral Technology University of California Berkeley A Caiit. PASPY, Stanley F.. Jr. (R) Ceramic Suppiy Co., Crooksville, Ohio PASS. J. S. (V/) Pass L Seymour, !nc.. Soivay Sta. 50 2ovd Ave., Syracuse 9, X. Y. PASS. R. K. (W) Or.orcaga Pottery Co. IS56-5S W. Fayette St. Syracuse a. >*. Y. PASS 4 SEYMOUR. INC. (J. S. Pass) Solvav Station. 50 Bovd Ave. Syracuse 9. N. Y. PATEK. Sherwood E. ,'S) Midland 3riak & Tile Co. Chillicothe. Mo. PATEL. Chandrakant J. Box 256. Alfred. N. Y. PATERSON. G. W. (R> Refractories Engr. 4 Supplies. Ltd. 99 Clinton St-. Hamilton, Ont.. Canada PATRICK. Ens. Howard W. (XJ) NAS Kingsville. SNA Kingsville. Texas PATRICK. Robert F. (ED Pemco Corp. 255-1 Greenmount Ave. Baltimore 18. Md. PATTERSON. Richard C. (W) United States Ceramic Tile Co. East Sparta. Ohio PAULSON, Fred H. (R) 28 GreenaaJe Ave., Worcester 6, Mass. (Norton Co.) PAVLISH. Arnold E. (GF) 2904 Clarkson Rd. Cleveland Heights 18. Ohio (Cleveland Supply Co.) PAWLOWSKI. Edward J. (W) 11 Morris St.. Amsterdam, N. Y. (Mica Insulator Co.) PEARCE. Charles S. (F) American Ceramic Society 4055 N. High St.. Columbus 14, Ohio PEARCH. Howard C. (\VI) 27 Hillcrest Manor. Midland. Pa. (Louthan Mfg. Co.) PEARCH. William M. (WI) Akron Porcelain Co., Akron 14, Ohio Vol. 35, No. 10 (1050) PEARSON. Edw.ird P. (X) Basic. Inc.. 5-5 Hanna 3'.dg. Cleveland IS, Ohio PEARSON. E. J. 4 J.. LTD. (Charles A. G. Thomas) Firebrick Works Stourbridge. Worcs. England PEASE. Philip J. (G) M05 Washington Ave. Parkersburg, \V. Va. (Demuth Glass Works. Inc.) PECHMA.V. Alexander (WI) 1157 E. Pasadena. Pomona, Calif. (Pomona Tile Mfg. Co.) PECK. J. Clair (SI) 2433 Brooksiae Ln., York. Pa. (Glen*Gerv Shale Brick Corp.) PECKHAM, George W. (C) Chattanooga Glass Co. Corsicana, Texas PECKHAM. Robert H. (G) Pennsylvania Optical Co. 234 S. Eighth St.. Reading, Pa. PEDRICK. W. W. <C) Armstrong Cork Co.. Millville, N. J. PEDU, Richard K. (MI) 129 Chestnut St., Garden City, N. Y. PEEL. G. N. Associated Lead Manufacturers Ltd. Crescent House Newcastle-on-Tyne, 1. England PEILER, Karl E. (GF) Hanford-Empire Co. Div. Emharc 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.. Urbana, III. PELZ. Robert W. (El) 2706 Grovewood, Parma 9, Ohio (Ferro Corp.) PEMCO CORP. (Richard H. Turk) 550! Eastern Ave., Baitimore 24, Md. PEXBERTHY. Larry (C) Penbrrthy Elecrromelt Co. 2317 47th S. W.. Seattle 16. Wash. PENCE. Forrest K. (WFI) 1609 Scenic Dr., Austin 3, Texas (Ceramic Sncietv of the South West) PENNSYLVANIA PULVERIZING CO. (William J. Woods. Jr.) Two Gateway Center Pittsburgh 22. Pa. PENTECOST. Joseph L. 647 Monticelio Dr.. Fails Church. Va. PERENY. Andrew (M) Pereny Equipment Co. 393 Chambers Rd. Box 153. Station A. Columbus. Ohio PERKINS. Harreil L. (M) Central of Georgia Railway Co. 1212 Rhoues-Haverty Bldg. Atlanta 3. Ga. PERKINS. Walter W. (WI) 371 Jacoby Rd.. Copley. Ohio (United States Stoneware Co.) PERRY. Paul E. (B) Allegheny Ludlum Steel Corp. Brackenridge. Pa. PERRY. Robert F. (WT) Box 233. Victor. X. Y. (Victor Insulators Div., I-T-E Circuit Breaker Co.) TERRY. T. Ray (W) 1209 Bawcom. Sweetwater, Texas (General Electric Co.) PERTUCH. Walter A. R. (D) Franklin Institute Library 20th 4 Parkway. Philadelphia 3, Pa. PESKIN, William L. (R) Carborundum Co., Perth Amboy, N. J. PETERS. Forrest l. (W) 113 Hendy Ave.. Elmira, N. Y. (Coming Glass Works) PETERSEN. Fred A. (EFT) Hunter- Thomas Associates 2130 Keith Bldg.; Cleveland 15, Ohio PETERSON. Alber: r. 90 Fre?n Por.k Pky. Cambridge 33. Mass. PETERSON. Donaid H. Ej 741 Hil! Ave.. Pittsburgh 21,. Pa. (Westinghouse Electric Corp.) PETERSON. Jack D. (C) 3029 123rd St.. Toledo II. Ohio < Owens-Illinois > PETERSON. Jack L. i R!. 320 Milan Ave. South Pasadena. Caiii. (Melvin L. Jor.tr Co.; PETERSON. John A.. Jr. (\V) Metal 4 Thermit Corp., Carteret. N. J. PETERSON, W. K.. Jr. (R) Valentine Fire Brick Co. Div. A. P. Green Fire Brick Co. Woodbridge. N. J. PETRIE. Lloyd R. (W) 305 Western. Abingdon, 111. (Abingcon Potteries. Inc.) PETT, Tyier G. (G) Kopp Glass, Inc. Swissvaie. 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. Nebr. (Yankee Hill 3rick Mfg. Co.) PFAUDLER CO. (Sidney W. McCann) 1000 West Ave.. Rochester 3, N. Y. PFEIFF, C. H. (R) CurTan-Pfeiff Corp. Box 527. Metuchen, N. J. PFEIFFENBERGER. Lucas E. University of Illinois 204 Ceramics Bldg.. Urbana, 111. PFEIFFER. W. H. (Erl) Frigiaaire Div.. General Motors Corp. 300 Tavior 51., Davron 1. Ohio PFLEGER. George E. (M) Harshaw Chemical Co. 3237 S. Garneld. Los Angeles 22. Calif. PHADKZ. V. S. Centrai Potteries. Ltd. Itwari. Nagpur 2. India PHELPS DODGE CORP. MORENCI BRANCH (L. L. McDaniel) Morenci, Ariz. PHELPS. Girard W. (Ml 410 E. Magnolia Dr.. Murrisvii'e. ?a. (United Gay Mines Corp.) PHELPS. Stuart M. (RF) Mellon Institute. Pittsburgh 13, Pa. PHILLIPS. Adrian W.t Jr. (R) 316 Fairmont Ave.. New Castle. Pa. (Shenango China. Inc.) rHILLrPS. Charles J. <G) Radio Corp. of America RCA Victor Div.. Bldg. 56-1 Camden. N. J. PHILLIPS. Edwin L. (MI) Carolina Pyrophvllite Co. Box 2414. Greensboro. N. C. PHILLIPS. Gordon D. (W) Olean Tile Co. 1QJ S. Clark St.. Olean. N. Y. PHILLIPS. James G. (RI) Dept, of Mines 4 Technical Surveys Mines Branch. Industrial Minerals Div. Lydia St., Ottawa. Ont.. Canada PHILLIPS. Leigh F. Box 87. East Quogue. L. I.. N. Y. PHILLITS. Richard A. f\VJ) 1836 Willow Ave. Niagara Falls. N. Y. (Sprague Electric Co.) PHILLIPS. W. Eric (G) Duplare Canada Ltd., Box 367 Terminal A, Toronto. Ont.. Canada PHOENIX. Richard C. (I) R. R. 1. Wynnewood Bound Brook. X. J. Roster S3 PICKARD. M. H iMi Pacific Coast Borax Co. 100 Park Ave.. Nr* York 17. X. Y. PICKETT. Albert R. (R). Aluminum Co. of America 1501 Alcoa Bid?.. Pittsburgh 19. Pa. PIEPER, Arthur O. (M): 10: Trevor Court Rd. Rochester 10. N. Y. (Hearty Industrial Ceramic Cor?.) PIERCE GLASS CO. (J. G. 3ozzo) Railroad Ave.. Port Allegany. Pa. PIERCE. J. Allen (R) 793 Chalmers PI., Pittsburgh 16. Pa. (Harbison-Walker Refractories Co.) PIERPONT, Harian T.. Jr. (R) Norton Co.. 1 New Bond St. Worcester 6, Mass. PIERSON, James F. (MI) Pemco Corp.. Sales Dept. 5601 Eastern Ave.. Baltimore 2-*. Md. PIGOTT. Phillip G. i R). Box 345. Norris. Tenn. (United States Bureau of Mines) PILXINGTON. Lawrence K. A. Messrs. Pilkington 3ros., Ltd. Glass Works, St. Helens, England PINCUS. Alexis G. (B)! General Electric Co.. Res. Lab. Box 1083. Schenectady, N. Y\ PINNEY. J. M. (W) Harker Pottery Co. East Liverpool, Ohio PINNOW, Harley R. (W) Pond St.. R. R. 19 East Liverpool, Ohio (Hall China Co.) PINOTTI, Fred D. (G) 2324 Middlesex Dri, Toledo, Ohio (Kimble Glass Co.) PISULA. J. Donaid (R) Corning Glass Works. Corning. X. Y. P1TTENGER, John T. .(W) 3ox 207. Newell. W. Va. (Homer Laughlin China Ca.) PITTMAN. Jack (G1- Owens-Illinois, Technical Center ir00 N. '.Vestwood A.ve. Toledo 7. Ohio PITTMAN. Wiiliam C. fR) 410 Whitthome Dr.. Wyoming. Cincinnati 15. Ohio (Chas. Tavlcr Sons Co.) PITTS. Joseph W. (E) 5714 Beeeh Ave.. 3euaesda 14. Md. (National Bureau of Standards) PITTSBURGH CORNING CORP. (Walter D. Ford) Research & Development Div. Port Allegany. Pa. PITTSBURGH PLATE GLASS CO. (S. F. Cox) Creighton, Pa. PIXLEY, Francis V. (S) 3S8 Grand St.. Newburgh, N. Y. PLACE. Tom M. (BI) Helipot Corp. 916 Meridian St. South Pasadena. Calif. PLACE. Thomas M.. Jr. (B) 2413 W. 216th St.. Inglewood 4. Calif. (Helipot Corp.) PLAGGE. Vernon L. (G) 54 Woodland Ave.. East Orange. N. J. (Westinghouse Electric Corp.) PLANJE, Christian W. (RI) Gladding. MeBean it Co. 2901 Los Felix Blvd. Los Angeles 39. Calif. PLANJE. Theodore J. M. (B) 4 Summit Ave., Roila, Mo. (Missouri School of Mines) PLANK, Ross D. (W) 2835 Shadowlawn Ave., Los Angeles 39. Calif. (B. F. Wagner it Co.) PLANKENHORN. William J. (EFI) Chicago Vitreous Corp. 1427 S. 55th Ct. Cicero 50, 111. Vol. 35, Xo. 10 (1056) PLATT. Allan S. (5) Structural Clay Products Institute 1947 Grand Central Terminal 3ldg. New York 17. X. Y. PLEASANTS. Luther ., Jr. (G'i 6002 Brookfield Rd., Richmond. Va. (Allied Chemical 5c Dye Corp.) PLOET2, Edwin C. H. (E!) 680 S. Lincoln Ave.. Kankakee. 111. (A. O. Smith Corp.) PLOETZ, George L. fW) 261 Swaggertown Rd., Scotia 2, N. Y. (General Electric Co.) PLUM BO, Victor A. (G) General Glass Equipment Co. 5 S. Virginia Ave., Atlantic City, N. J. 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, Xans. PLUMMER. Wiiliam A. (G) Corning Glass Works. Corning. N. Y. PLUNKETT, Jerry D. 78 Westgate. Cambridge 39. Mass. PLUSCH. John A. (W) 63 Spruce St.. Westneld, Mass. (Cortland Grinding Wheeis Corp.) POFFENBERG, Scott (M) 11616 Cnenault St. Los Angeles J9. Caiit. POHLE. Joachim H. P. Pohle Co.. 37 A Sutelstrasse Hannover. Buchholz, Germany POISSON. Louis Faiencerie de Badonviller Badonviller, Meurtbe e: Moselle. France POLAND. Milton E. (WJI) 523 S. Pleasant St.. Royal Oak. Mich. (Champion Spark Plug Co.) POLAR. Alfredo (W) National Tile & Mfg. Co. Anderson. Ind. POLE. Gordon R. (3FI) 2592 S. Shore 31vd. White Hear Lake 10. Minn. (Minnesota Mining Sc Mfg. Co.) POLES. Alfred P. (W) 325 Arborlea Ave.. Morrisville. Pa. (Cliftnn Ceramic Mfg. Co.) POLHSM.US. D. W. (R) , Carborundum Co. Perth Am'oov, N. J. POLK. Arthur E. (W) R. R. 1, Dowagiac. Mich. (Produce Terminal Corp.) POLSKY. Jack W. (M) W. H. 3c L. D. Betz Co. Gillingham it Worth Sts. Philadelphia 24, Pa. POMEROY. William T. (W) Sterling China Co. East Liverpool, Ohio POMPEI. Luigi SAN AC Soc. per Az. Refrattari Argiile e Caoiini 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. Kleinhans) 1400 S. 13th St. Louisville 10. Ky. PORST. Edward G. (El) 1418 Stunewood Rd., Baltimore 12. Md. (Pemco Corp.) PORTER. Frank R. (EFI) 318 E. Clark St.. Crown Point, Ind. (Inland Steel Co.) PORTER. J. L. (B) Kaiser Aluminum Sc Chemical Corp. 1924 Broadway, Oakland 12. Calif. PORTER. Sidney C. (R) 3ox 34. East Liverpool. Ohio ( Consultant J PORTER. Wailace S. (W) Universal-Rur.dle Corp.. Eox iS3 Hondo, Texas PORTS. David W. 212 N. McCuiicugh, Urbana, III. POSEY IRON WORKS, INC. (Frank A. Fix) Lancaster. Pa. POSLUSZNY. Raymond F. (Ki 242 E. Meehan Ave. Philadelphia !9, Pa. (Refractory Specialties Co.) POST, Benjamin F. (RI) Cortlar.d Grinding Wheeis Corp. Chester, Mass. POST. 2arr A. (W) 5020 Elm St. Bethesda, Washington 14, D. C. (MeJpar. Inc.) POSTS. Emerson ?. (EFI) 616 Baldwin St.. Chattanooga J. Tenn. (Consultant! POSTLEWAITE, Donaid E. (WI) Universal-Rundle Corp.. Box 300 Redlands. Calif. POTTER. Alan 35 Shepard St.. Rochester. N. Y POTTER. John F. (R) Bell Telephone Lab. Murray Hill, N. J. POTTERS SUPPLY CO. (William W. Irwin) 11 Washington St. East Liverpool. Ohio POTTIER. Henri Cie. Generale d'Electro-Ceramique 12 Rue de la Baume. Paris 8", France POTTS. Amos ?. (SF) 359 E. Main St.. Logan, Ohio (Logan Clay Products Co.) POULOS. Nick E. (B) 1764 Flagler Ave. N. E.. Atlanta. Ga. (Georgia Institute of Technology) POULTCN. Robert F. (W) 2763 N. Congress Rd.. Camden 4. N. J (Universai-Runale Corp.) POUNDSTONE. William W. (G) Pittsburgh Plate Glass Co. One Gateway Center. Pittsburgh 22. Pa. POWELL. John A. (V.'l 429 S. West End Ave., Lancaster. Pa. (Radio Corp. of America) POWELL. Lee F. (M) Old Hickory Clav Co. Box 271. Paducah. Ky. POWELL. O. S. (S)_ Indiana Drain Tile Co.. Inc.. Box 66 Brooklyn, Ind. POWELL. Richard H. (M) 1279 N. Main St., Jamestown, N. Y. POWERS. Don W. 1201 Highland Ave.. Abilene, Texas POWERS. George H. (R) 261 WoodSeld Rd. Washington Township Westwood 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 Optical Co. 63S St. Paul St-, Rochester 2, X. Y. PRACHANKHADEE. Manoon Dept, of Science. Ministry of Industry Bangkok. Thailand PRALOW. Walter E. L. Zahnfabrik Wienand Sohne Sc Co.. Krs. Offenbach/Main Sprendlingen, Germany PRATT. Donaid S. (E) 3422 Eighth Ave.. Beaver Falls, Pa. (Ingram-Richardson Mfg. Co.) Roster 8. PRECISION GRINDING WHEEL CO.. INC. `Alexander M. 3inkeiy) SJOl Torresdaie A.ve. Philadelphia 36, Pa. PRESCOTT. Prank R. iG) 131] Kim bail Ave.. Arnold, Pa. (Pittsburgh Plate Glass Co.) PRESSEV. Clive ( M ) Minatron Corp.. 3elle Mead, N. J. PRESTON, Frank W. (G) Preston Labs.. Box 1-49, 3utier, Pa. PREWITT. J. K. (S) .1 Elgin Standard Brick Mtg. Co. Elgin. Texas PREY. Arthur H. (MI) Carborundum Co., Niagara Falls, N. Y. PRICE. Glen M. (R) General Refractories Co., Box 1673 Baltimore J. Md. PRICE, James E. (RI) 1956 Guernsey Ave., Abington, Pa. (Simonds Abrasive Co.) PRICE. J. Russell (D) "Fairmeadows" Box 211, R. R. 3 Esmond 17, R. I. (Doulton St Co., Inc.) PRIDDY. K. O. (S) Barium* Reduction Corp. South Charleston 3, W. Va. PRIESTLEY. J. Edward Huntly 3rick A Fireclay Co.. Ltd. 3ox 14, Huntly, New Zeaiand PRIMM. Herbert E. (R) 1658 Elevado Ave., Arcadia. Calif. (Harbison-Walker Refractories Co.) PRINCE. Alan T. (BI) Mines Branch. Ottawa. Ont., Canada PRINDLE. William R. (G) Hazel-Atlas Glass Co. 15th St Jacob Sts.. Wheeling, \V. Va. PRIOR, Gordon M. (M) : Box 101, Scotch Plains, N. J. (Whittaker. Clark St Daniels, Inc.) PRIOR. Harold D. (M!) ! 1025 Connecticut Ave.. NAV. Washington 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.) PROKOPOWICZ. Thomas I. (3J) Sprague Electric Co., North Adams. Mass. PROMAT DIVISION. POOR St CO. CW. F. Stark) 851 S. Market St. Waukegan, 111. 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. (Oscar Gonzalez Cabanillas) Box 4729 San Juan, Puerto Rico PUI. Wong Yuk Castle Peak Ceramic Co., (1940) Ltd. Castle Peak. N.T.. Kowloon, Hong Kong PULLIAM. George R. (B) 6920 Morrison Ph, Madeira. Ohio (Cincinnati Milling Machine Co.) PULS, George (R) Acme Brick Co. Box 425. Fort Worth, Texas PCLS. Josef "Austria'' United Enamel' Works WilheJminenstr. SO Vienna XVI, Austria Vol. 35. No. 10 (1956) PUMPHREY. William Murex Welding Processes Ltd. Hertford Rd. Waltham Cross. Herts. England PUNTXEY, L. E. (RI) 903 E. Jackson, Mexico. Mo. (Mexico Refractories Co.) PUPULIDY, Alexander (R) 35J1 -35th St., Apt. 5K Jackson Heights 72, N. Y. (Arabian American Cii 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. Miiler) Box 483 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 50S King Ave., Columbus, Ohio QUIRK. Virgil P. (B) 3002 Allen St., Ower.storo, Ky. (General Electric Co.) R R.. Santiago E. Anrunez de Mayolo Industria Nacional Ceramica y Anexos Casilla Postal 845, Lima, Peru RABE, N. A. (W) 10 W. Palmer Ave., Collingswood, N. J. (UniversaJ-Rundle Corp.) RABIN. William J. (W) 19A-1 Redfieid Village, Metuchen. N. J. (Ferricore. Inc.) RADCZEWSXI, Otto-Ernst Institut fur Oesteinshuttenkunae Mauerstrasse 5. Aachen. Germanv RADIO MATERIALS CORP. (R. D. Bourgerie) 3325 N. California Ave., Chicago IS. III. RAGATZ, Eugene C. (M) Allen-Bradley Co. 136 W. Greenneld 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 *6. Ohio RAINE. Frank F. (RI) III E. Vine St., Mexico. Mo. (Mexico Refractories Co.) RAIXEAR. John F. (S) 73 Sharon Ave.. Hamburg, N. Y. (Buffalo Brick Corp ) RAIT, J. R. Research Controller Hadfields Ltd. East Hecia Works. Sherfield 9, England RALSTON. O. C. (MF) 4J3J Clagett Rd.. Hyattjville, Md. (U. S. Bureau of Mines) RALSTON. Thomas E. (R) Harbison-Walker Refractories Co. 1800 Farmers Bank Bldg. Pittsburgh 22, Pa. RAMM. Eric H. L. Brisbane 4 Wunderlich Ltd. Lord St.. East Perth. West Australia RAMSDELL. John L. (EJ) 17 Ellieott Ave.. Batavia. N. Y. RAMSDEN. C. E. C. E. Ramsden St Co. Ltd. Folcr Colour St Chemical Works Fenton. Stoke-on-Trent. England RAMSEY. Thomas H.. Jr. (BJ) 1615 Homewood PI., Dallas, Texas RAMTITE CO. (L-Dwis J Jacobs) 2563 W. 13th. S:.. Chicago 3, III. RANDALL. Theodore A. (D> State University of New York College ol Ceramics. Alfred. N. Y. RANDOLPH. Hai F. (R) Mexico Refractories Co.. Mexico. Mo. Randolph. Robert l.. jr. (sj> 2 N. Parkdaie Dr., Chattanooga. Trnn. (American Lava Corp.) RANKIN, James E. Box 502! State College Sta. Raleigh. N. C. RANKIN, James J. (M) St. Joseph Lead Co., Box 97 Mooaca, Pa. RAXKINE. Adam S. (R) Martinsville, N. J. (Johns-Manvilie Corp.) RAPP, Carl H. (WI) Globe-Union. Ir.e., 900 E. Keefe Ave. Milwaukee 1, Wise. RAPP, S. W.. Jr. (W) Morton Pottery Co. 315 W. Jetferson St., Morton. 111. RASMUSSEN. R. X. (G) Mississiopi Glass Co., Fullerton. Calif. RASMUSSEN. Wayiand G. (S) Mason City Brick Sc Tile Co. 200 Brick Sc Tile Bldg. Mason City, Iowa RASSNER, Donald D. (SI) 1500 Alabama Ave., Jasper, Ala. (Natco Corp.) RATCLIFFE, Harry J- (M) 724 Bunker Hill Ave., Trenton, N. J. (Unique Kilns or Trenton, Inc.) RATCLIFFE. Temple W. (R) 244 3uffaio St.. Beaver, Pa. (Babcock St Wilcox Co.) RATHMANN. Clyde L. (G) R. R. 3. Corning, N. Y. (Coming Glass Works) RAUCH. Harr* W. (G) 342 Spring Ln.. Bridgeport, ?a. (Foote Mineral Co.) RAUSCHER, Louis C. (G) 2374 Geneva. Ave.. Clensice. Pa. (Philco Corp.) RAY. E. Haroid (M) B. F. Drakenfetd Sc Co.. Inc. Box 519. Washington, Pa. RAY, John G. (G) Sylvania Electric Products, lac. Cottage Place. Mir.eola. L. I.. N. Y. RAYTHEON MANUFACTURING CO. (Leo J. Cronin) Foundry Ave. Waltham 54, Mass. RAZEY. Robert M. (R) 486 Asbiand Ave.. Detroit 15. Mich. (Great Lakes Steel Corp.) REA. Robert ?. (WI) Stupakor? Div.. Carborundum Co. Latrobe. ?a. REAGAN. Cornelius J. (S) 532 Woodmont St. East McKeesport. ?a. (Van Ormer Brick Co.) REAGAN, Michael M. (E) Stamped St Enamelled Ware Ltd. Guelph Ave.. Hespeler. Ont., Canada REBCHOOK, Gregory V. (W) Radio Materials Corp. 1708 W. Beimonr Ave. Chicago, 111. REDWINE, 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 Woodbine St.. Willard. Ohio (National Clav Pipe Research Corp.) REED, Carl E. (G) 1410 E. Main Sc.. Lancaster, Ohio (Sharp-Schurtz Co.) Roster 87 REED. George C. Ill 415 5. 25th S:.. Apt 3-3 South 3cnd. Ir.d. (3end:x Aviaticr. Corp.) REED, Madison V.\, Jr. 3301 A.vc. "G". Austin, Texas REED, Paul K. (R) J101 /* Faim-.cn: Ave,, New Castle, Pa. (New Castle Refractories Co.) REEVES. Haroid. Sr. (\V) Fitzpatrick industries Inc. Tux 30. East Palestine, Ohio REFRACTORIES INSTITUTE. THE (Avery C. Newton) First National 3ar.k Bldg. Pittsburgh 22. Pa. REFRACTORY 4 INSULATION CORP. (A. S. Arwine) port Kennedy, Pa. REGENBRECHT, Albert. Jr. (G) Svlvania Electric Products, Inc. Burlington. Iowa REGOUT. Joseph F. E. N. V. de Sphinx, Maastricht, Holland REGOUT, L. F. H. N. V. Porseiein en Tegeilabriek Mosa Meersser.erweg JSS. Maastricht, Holland REID. Frank ?. American Ceramic Society U055 N. High St., Columbus 14, Ohio REID, Harry F.. Jr. (M) McKay Co. 350 Grantly Rd., York. Pa. REIMAN'N, A. Gilbert (W) 114 Pinehurst PI.. Schenectady 4, N. Y. (General Electric Co.) REIMER. John J. (\VI) Keystone Ridgeway Corp. Gettysburg, Pa. REIN. Peter (W) l/-6 W. Sycamore, Kokomo. Ind. (Kokomo Sanitary Pottery Corp.) REINKER. Arthur G. (R; Johns-Manviile Sales Corp. 1530 Guiidhail 3ldg. Cleveland 15. Ohio REINKER, Gerald E. (G) General Electric Co.. Lamp Div. I 133 E. !53r.d S:.. Cleveland 13, Ohio REISCHEL. Frank (U'l 3733 Mayflower. Arcadia. Calif. (Diiectron l.nc.) REiSING. Joseph A. (Ml St. Joseph Lead Co., Zinc Smelting Div. Monaca. Pa. REISS. Max S. (E) 35 Howell St.. Canandaigua, N. Y. REMDE. Harry F.. Jr. General Ceramics Corp. Keasbey, .V. J. REMINGTON. Victor H. (GI) 3..F. Drakenfeld 4 Co.. Inc. Box 519. Washington. iPa. REMMEY. G. 3ick!ey (RF) Richard C. Remmey Son Co. Hedley St. 4 Delaware River Philadelphia 37. ?a. REMMEY. John G. (R) Richard C. Remmey Son Co. Hedley St. 4 Delaware River Philadelphia 37, pa. REMMEY. RICHARD C.. SON CO. (G. Bickley Remmey) Hedley St. 4 Delaware River Philadelphia 37, Pa. REMPES. Paul E.. Jr. (BJI) 5452 Miteheil Dr.. Page Manor Dayton 3, Ohio (United States Air Force) RENFREW. J. Harvey (S) 31 Linden Park St.. Roxbury 20, Mass. (Herman G. Protie) RENOUF. Leonard J. (R) 342 Church St., Youngstown, N. Y. (Titanium Alloy Mfg. Div., National Lead Co.) Vol. 35, No. 10 (1956) RE.VSKERS. Richard H. <\V[. American-Standard Box 736. Kokomo, Ind. REPUBLIC STEEL CORP. (Burton LongwelH N23 Republic Bid?. Cleveland I. Ohio RESCHETZ. Raymond R. IMS!'.* W. Park. Champaign. III. RESER, Margie K. 977 Carlisle Ave., Columbus II, Ohio (American Ceramic Society) REUSING. Charles R. (R) 5-15 Boulevard, Westfield. N. J. (National Refractories Co.) REUNING. George W.. Jr. (RI) 279^ E. Main St.. Frostburg, Md. (Big Savage Div., Mexico Reiractories Co.) REUSCHE, Frank L. (W) 60 Congressional ?ky., Livingston. N. J. (L. Reusche 4 Co.) REUTER. Raymond (R) National Aluminate Corp. 6216 W. 66 PI.. Chicago 33. III. REYNOLDS. Harry M. (G) Renite Co.. Box 365, Sta. A. Columbus. Ohio REYNOLDS METALS CO. (L. S. Beeler) 2500 S. Third St.. Louisville. Ky. RHOADS. James L, (BJ) 1410 Springsiae Dr., Lancaster. Pa. (Radio Corp. of America) RHODES. Foster T. (W) Onondaga Pottery Co. Syracuse A N. Y. RHODES. Fraser 3. fWFM 7134 Maple Ave.. Madeira. Ohio (Briggs Manufacturing Co.) RHODES. Ralph E.. Jr. (M) United Clay Mines Corp. 101 Oakland St.. Trenton 6. N. T. RHODES. Ralrh R. (RF!1 1729 Poweil Sc.. Norristown, Pa. (E. J. Lavino 4 Co.) RHODES. William H. Box 327. Alfred. N\ Y. RICCI. Edward Micfaaei (RJI) 817 Main St.. Dickson City. Pa. (Harbison-Walker Refractories Co.) RICE. George A. f\V>_ General Electric Co. Campbell Ave. Plant. Rm. 459 Schenectady. X. Y. RICE. Hal H. f\VI) 451 Vinewood Ave.. Birmingham. Mich. (General Motors Corp.) RICE. Murray J. (B*) Box 155. Alfred. N. Y. (State University of New York. College of Ceramics) RICE. William H. (G) General Electric Co. Glass Technoiogy Laboratory 1133 E. 152nd St.. Cleveland 10. Ohio RICH. David C. (G) Pitt.'burgh Plate Glass Co. Creighton. Pa. RICHARD. Giulio A. Via Cernuschi I. Milano. Italy (Societa Ceramica Richard-Ginori) RICHARDS. Robert W. (S) Richards Brick Co. 234 Springer. Edwardsville. 111. RICHARDS. Thomas Z. (R) 30 Maple St.. Greendale Sta. West Boylston. Mass. (Norton Co.) RICHMAN. Peter D. Box 746. Alfred. N. Y. RICHMOND. Joseph C. (EFI) 4822 Morgan Dr.. Chevy Chase 15, Md. (National Bureau of Standards) RICHTER. Charles J. (G) Box 275, Canrieid. Ohio RICK. Clarence A. R i Box 63. Columbiana, Ohio (Kaiser Aluminum i: Chemical Corp.) RICKER, Richard V. . ',!) Aluminum Co. o: America Alcoa Research Labs., Box 773 New Kensington, Pa. RICKEY. Charles J. (WJ) 3. F. Drakcr.ieiJ 4 Co.. Inc. Washington, pa. RICKEY. J. H.. Jr. ( K lror.tcn hire Brick Co. Box 536. lror.tcn. Ohio RIDDLE. Frank H. (WFI) 14 Upland Rd., Colorado Springs. Colo. (Champion Spark Plug Co., Ceramic Div.) RIDGEWAY. Thomas J., Jr. (R) General Refractories Co. Morrisville. Pa. RTEGERT. Richjrd ?. (D Box 995, Alfred. N. Y. RIEPER. Gerald 394 Pammel C:.. Ames. Iowa RIGBY, James E. (G) Blue Ridge Glass Corp. Kingsport. Term. RIGTERINK. Merle D. (3F) Bell Telephone Labs. Murray Hill, N. J. RIIS. 'A.sgeir (M) Robeson Process Co. Box 960, Erie. Pa. RIKER, Leon \V., Jr. (G) 111 Rebecca St., Kittanning, I'a. (Pittsburgh Plate Glass Co.) RILEY. Roger R. (R) 1774 Danesta Dr.. Concord, Calif. (Gladding. Mc3ean 4 Co.) R1NDONE. Guy E. (G) Department of Ceramic Technology Pennsylvania State University University Park. Pa. RINGEX. Robert E. (M) Paul O. Abbe Co.. 143 Center Ave. Little Fails. X. J. RISPLER, Z. \V. Palestine Glass Works "Phoenicia** Ltd., Box 168 Haifa, Israel RUTLAND. Harold N. (G) 14732 Eastgate Dr.. Bellevue. Wash. (Boeing Airplane Co.) RITT. P. E. (W; 1326 S. George Mason Dr. Arlington. Va. (Melpar. Inc.) RITTER, Joseph S. (G) Adamston Flat Glass Div.. Rolland GLss Co.. Box 631 Clarksburg, \V. Va. RITTLER. Hermann 12 X. Wayne St.. Phelps. X. Y. RITZ. Joseph W. (G) Syivaoia Electric Products. Inc. 33-30 Kcw Gardens Rd. Kew Gardens. L. I., N. Y. ROACH. H. C. (R) American Radiator 4 Standard Sanitary Corp. 40 W. 40th St. New York 18. N. Y. ROBB. Richard B. (G) 209 Vine St., Pittsburgh 18, Pa. (United States Steel Corp.) ROBBINS, Martin D. 86-15 Elmhurst Ave. Elmhurst. Queens, N. Y. ROBBINS. Ross W.. Jr. (RJ) 31 May St.. Worcester, Mass. (Norton Co.) ROBERSON. Cetis L. (G) 350 Moult St., Newark, Ohio (Owens-Coming Fibergias Corp.) ROBERTS, Gerald J. (S) Mineral Weils Clay Products, Inc. 205 N. W. Seventh St. Fort Worth. Texas Roster S9 HUBERTS. Juhn Taggart 1 Ei'!> 419 Park 3ivd.. Glen Ellyn, HI. (Crane Co.) ROBERTS. John W. (.Si 3204 Hawthorne Avc., Richmond 2-, Ya. ( Southern Lightweight Aggregate Corp.t ' ROBERTS. Mervin rrarcisfE.i 116 Carpenter Ave. Crestwood. Tuckahoe 7. N. V. (de Lackr.er Heiicopters. Inc.) R<~ 3ERTSON. James A. (R> Wescvaco Mineral Products Div. Box 357. Newark, Calif. ROBERTSON, Jean M. (E) 3008 Rosedale Blvd., Louisville 5, Ky. (American Radiator 3c Standard Sanitary Corp.) ROBERTSON, Leon F. iG) Brockwav Class Co., Inc.. Brockway, Pa. ROBERTSON. Randal K. <S) 906 University Tower Bldg. Montreal, Que.. Canada (Laprairic 3rick St Tile. Inc.l ROBERTSON, R. Kenneth (S) 133 Thornton Ave. Mt. Royal. Que., Canada (Laorairie Brick & Tile. Inc.) : ROBESON PROCESS CO. UAsgeir Riis) Box'960. Erie, Pa. ROBILLARD. Harvey J. (R) Exolon Co., 1000 E. Niagara St. Tonawanda. N. V. ROBINETTE. Oren, Jr. Box 2234. Clcmson College Sta. Clemson, S. C. ROBINSON CLAY PRODUCT CO. (W. E. Robinson) Box 1070 65 W. State Si.. Akron 9, Ohio ROBINSON. F. George (S) 500 5. Santa Fe Dr., Denver, Colo. (Robinson Brick St Tile Co.) ROBINSON. Gilbert C (SF) Box 91, C.em5on, 5. C. (Clemson College) ROBINSON. Louis G. (E> Louis G. Robinson Labs. Box 761. Cincinnati 1. Ohio ROBINSON. Percy Burriii Diamond Clay Co. Ltd. Hartshill. Stoke-on-Trent. England ROBINSON. Phi-lip 23 Pyrrole Ave. Pyrr.oie. N.S.W , Australia (C-ilara St Robinson P:y, Ltd.) ROBINSON. Richard E. iRl) Johns-Manviile, Zelienople, Pa. ROBINSON. Richard R. (SO 2232 Parkway Blvd.. Alliance. Ohio (Alliance Clay Product Co.) ROBINSON VENTILATING CO. (J. L. Henderson. Jr.) Zelienople, ?a. ROBINSON. W. E. (R) Robinson C!ay Product Co. Box 1070. 65 W. State St. Akron 9, Ohio ROBINSON. William L. 112 W. Sixth St.. Fulton, Mo. ROBSON, H. L. (G> 2 Water St.. Lewiston, N. Y. (Olin Mathieson Chemical Corp.) ROBSON. James T. (MFD Allied Engineering Division Ferro Corp., 4150 E. 56th St. Cleveland 5. Ohio ROBSON. William G. (R) Atomics International 21600 Vanowen, Canoga Park, Calif. ROCHE. L. C. (GF) 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 (1956) ROCHOW. \\\ P. < R|- , Harbisun-Walker Re: rhetorics Co, 1300 Farmers Bank 3idg. Pittsburgh 22. Pa. ROCKFORD BRICK St TILE CO. (G. H. Galvin. Jr.) Rock/ord, Iowa ROCKWELL. Dale L. Missouri School of Mines Jackling Gym. Roila, Mo. RODEFER. Howard H. (G) Rodefcr-Gleason Glass Co. Box 550, Beiiaire. Ohio RODEMOYER. William E. Box 197, Alfred. N. Y. RODMAN, Clarence J. (E) Box 809, Alliance. Ohio (Alliance Ware, Inc.) RODRIGUEZ. Alfonso F. (G) Vidriera Monterrey, S. A. Apartado 162. Monterrey, N. L.. Mexico RODRIGUEZ. A. R. (31) 29 Pine St.. Frarklinville, N. Y. (Hi-Q Div., Aerovox Corp.) ROE. Lawrence A. (G) 234 Sheridan ?!., Lake Bluff, HI. (International Minerals St Chemical Corp.) ROFF. Robert W. (M) Bell Operations 433 Birch Pi.. Westfield. N. J. ROFF. W. Wallace (M> 14 Glenside Dr., West Orange. N\ J. (Whittaker. Clark St Daniels. Inc.) ROGATZ. Alvin (B) Maida Development Co. 214 Academv St.. Hampton, Va. ROGERS, Edwin J. (WI) Scintilla Div. Bendix Aviation Corp.. Sidney. N. Y. ROGERS. Gregory I.. (R) 9500 S. Norwaik Blvd. Los Nietos. Calif. (Pacific Clnv Products) ROGERS. Melvin F. (GI> 55 Goff St.. Corning. N. Y. (Comine Glass Works) ROGERS. Virail L. (G' Hebron Brick Co.. Hebron. N. D. ROGERS. William R. (R) Carborundum Co. Refractories Div.. Niagara Falls. N. Y. ROLKE. Herbert J. (I) Sociedade de Engenharia Industrial Rua Marconi. 23.8* andar Sao Paulo. Brazil ROLLMANN. Peter Etnmalaan 11. Baarn, Netherlands (Anker Emaitle Fabrieken N.V.) ROMANO. Pasquale J. (W) 1212 Cavalier Ln.. West Chester, Pa. (Foote Mineral Co.) ROMINE. Donald J. 606 S. Monroe St.. West Frankfort. III. ROONEY. Thomas E.. Ill (R) Empire Fire Brick Co. 219 Murray, Fort Wayne. Ind. ROOT. H. Dean (WI) Westinghouse Electric Corp. K-70. Materials Engineering Dept. East Pittsburgh. Pa. ROOT. Lawrence L. (M) Stanford Pottery Inc. 40 S. 15th St.. Sebring, Ohio ROQUES. Rodney A. (W) Coors Porcelain Co.. Golden, Colo. ROSE* Ralph (RI) E. J. Lavino 5c 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) RUSulN in.jetun.c }. 3789 Gold St.. Apt. 5 Los Alamos. N. M. ROSENWINKEL. George O. (R) North American Refractories 59 E. Van 3uren. Chicago 5. 111. ROSICLARE LEAD 4 FLUORSPAR MINING CO. (J. 3lecheien) Rosiciare. III. ROSLUND. J. A. (R) Globe Brick Co., 3ox 765 East Liverpool, Ohio ROSS. Donald W. (RFi) 5929A Caknurst ?!., St. Louis \Z, 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. (Chrvsler Corp.) ROSS-TACONY CRUCIBLE CO. (A. M. Johnson) Robbins St Milnor Sts. Philadelphia 35, Pa. ROTH, Harper D. (M) East River Rd., Grand Island, N. Y. (Harper Electric Furnace Corp.) ROTHERMEL. Joseph J. <G) Coming Glass Works. Research Lab. Coming. N. Y. ROUDABUSH. Henry L. (R) General Refractories Co. 3201 Fruitland Ave. Los Angeles 58. Caiir. ROUDABUSH. Ned W. (R) 311 Car.dlewood Rd.. Broomall, Pa. (General Refractories Co.) ROUP. Roiland (WFI) Globe-Union Inc. 900 E. Keefe Ave. Milwaukee l. Wise. ROWE. Arnold E. (E) R. R. 1. Nebo. N. C. ROWLAND. Donald A. (W) 3 Maple St.. Bath, N. Y. (Westinghouse Electric Corp.) ROWLAND. Richards A. (B) Exploration 3: Production Res. Div. Shell Development Co. 3737 3ellaire Blvd.. Houston 25. Texas ROWLAND. R. W. (BF) New Castle Refractories Co. New Castle. Pa. ROWLANDS. Robert R. (WI) Universal-Runaie Corp. Box 500. Redlands. Calif. ROY, H. N. Indian Ceramic Society Dept, of Ceramics Benares Hindu Univ. Benares. India ROY. James W. (B) West St., Lenox, Mass. (General Electric Co.) ROY. Rustum (B) Pennsylvania State University 221 Mineral Sciences Bldg. University Park. Pa. ROYAL CHINA, INC. (B. L. Miller) Sebring, Ohio ROYAL. Herbert F. (WF) 345 Pilgrim Rd.. Birmingham. Mich. (Champion Spark Plug Co.) ROYAL COPENHAGEN PORCELAIN MANUFACTORY & THE FAIENCE MANUFACTORY ALUMINIA (Chr. Christensen) Smallegade 45 Copenhagen F., Denmark ROYER. Rene Ingenienr-Conseil (E.C.P.) 60, Rue DTssy, Vanves (Seine) France RUARK. A. E. (G) Box 2041. University. Ala. (University of Alabama) Roster 01 RUBIO. Diego P. i? Nc.v York. Cubao Quezon City. Philippines RUDD. Richard D. (M) Carborundum Co. 3335 \V. 4T* St.. Chicago 9. III. RUE. Charles V. (Bi) M3 Lindsay Ave.. Tiffin. Ohio '.Sterling Grinding Wheel Co.) RUECXEL. Waiter C. (RF) Hoppers Co.. Inc., Koppers Bldg. Pittsburgh. Pa. RUGG, Ormund I. (G) 13615 Meyers Rd:, Detroit 27, Mich. (Ford Motor Co.) RUGH, Kenneth A. (R) Garheld Refractories Co. 3olivar, Pa. RUH. Edwin (R) 789 Fruithurst Dr. Pittsburgh 34, Pa. (Harbison-Waiker Refractories Co.) RUH. Robert (RJ) 162 Diana L&,, N., Fairborn, Ohio (Wright Air Development Center) RUIZ. Jorge Martin (R) A mere* Ingenieros, S.A.. Ixtaccihuati 6 (Insurgences & Aguascalientes) Mexico 11, D. F. UUIZ, Robert A. (R) 114 W. Heme St., Vandalia, Mo. (Walsh Refractories Corp.) RULON. Richard M. (G) Sylvania Electric Products, Inc. 60 Boston St., Salem, Mass. RUSHMORE, Murray, Jr. (M) Moore St Munger 33 Rector St.. New York 6. N. Y. RUSO. Felipe B. (G) Galiano 109, Habana, Cuba (General Glass Equipment Co.) RUSOFF, Samuel (R) 3asic. Inc. Maple Grove. Fosroria. Ohio RUSSELL. Charles K. (R) 13 Mars St.. Mexico. Mo. ; A. P. Green Fire Brick Co.) RUSSELL. Howard F. (Ell 3118 Woodworth ?!. Pottowatomie Hills. Hazelcrest. Ingersoil Products Div., Bcrg-Warner Corp.) 111. RUSSELL, Lesiie A. (G) Hazel-Atlas Glass Co. Washington. Pa. RUSSELL. Lewis E. 20 Kirk Close. Oxford. England (U. K. Atomic Energy Authority) RUSSELL. Norman Keith (RI> 2 4 Longcorse Ln., Paoli. Pa. (Richard C. Remmey Son Co.) RUSSELL. Ralston. Jr. (XFT) Dept, of-Ceramic Engineering 126 Lord Hall, Ohio State University Columbus 10. Ohio RUSSELL. Robert G. '(C) R. R. 2. Granville. Ohio (Owens-Coming Fiberglas Corp.) RUSTLESS IRON CO.. LTD. (H. Whitaker) Lawkhoime Ln. Keighley, Yorks. England RYAN. D. Edward Curran Engineering. Ltd. Cardiff. Wales RYAN. Joseph D. (G) 3018 Middlesex Dr., Toledo 6, Ohio (Libbey-0wens-Ford Glass Co.) RYAN. Larry D. Box E, Gig Harbor, Wash. RYCKMAN. David-A.. Sr. <W) 40 S. Marion St., Bloomvtlle. Ohio RYDER. 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. No. 10 (1956) RYNDERS. Gerald F. (31) National Bureau of Standards Div. 9.1. Washington 25, D. C. RYSHKEWITCH. Eugene (R) Kearfott Co.. Inc. M2 Getty Ave., Clifton. N. J. s SADA, Patricio (E) Troqueies 3c Esmaltes S. A. Apartado Postal 371 Monterrev N. L.. Mexico SAGINOR. S. V. (W) Gladding, McBean & Co. 2901 Los Feliz Blvd. Los Angeles 39, Calif. SAIBEL, Edward (G) Carnegie Inst, of Tech. Scheniey Park, Pittsburgh 1J. Pa. SAILER. Edward (BJ) Radio Corp. of America RCA Bldg. 55-2, Harrison, N. J. SALEEBY. Edward C. (S) J. C. Steele 3c Sons. Inc. Box 951, Statesville, N. C. SALINAS, Mario (G) Montes Carpatos 625 Mexico 10. D. F., Mexico (Vidriera Mexico, S.A.) SALISBURY, Charles W. (G) R. R. I, Wayne, Ohio (Kimble Glass Co.) SALISBURY. William R. (W) Lyndon Rd.. Fayetteville, N. Y. (Onondaga Pottery) SALTMAN. Donald (R) 107 Bonito. Long Beach 2, Calif. (Douglas Aircraft, Inc.) SAMMONS. Frederick C. (R) General Refractories Co. 3247 Fruidand Ave. Los Angeles 58, Calif. SAMPSON. J. Leonard (G) Mahoning Glass Warkx 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. Drakenfeid St Co. Inc. Box 519. Washington. ?a. SAMUEL. Donald G. (R) E. J. Lavino & Co. Box 29, Norristown. Pa. SANBORN. Paul H. (W) 2514--23rd St., Parkersburg, W. Va. SANDERS. Clyde A. (M) American Colloid Co. Merchandise Mart, Suite 313 Chicago 54. III. 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. Goteborg, 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) 375 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. SANT. John \Y. (.W) Uni versa!-Runtiie Corp. Mt. Vernon & Orchard St. Camder.. N. J. SANTOMIEHI. S. Lewis (\VI) Box 3. Botkir.s, Ohio (Botkins Engineering) 5ARAKAUSKAS. Raymond (3) National Carbon Co.. Research Labs. 3ox 5116. C:eveland I. Ohio Sargent. Edward c. <Ri Zirconium Corp. of America Solon. Ohio SARRAF, Edward M. (R) 20001 Laurel Ave. Rocky River 16. Ohio (Harbison-Waiker 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. SAUEREISEN, C. Fred (M) Sauereisen Cements Co. Sharpsburg Sta., Pittsburgh IS. Pa. SAULS, J. B. (MI) Funkhouser Co.. 138 W. Washington St. Hagerstown, Md. SAUNDERS. Alfred C. (RI) Eckhard: Rd.. Hamburg. N. Y. (Electro Refractories St Abrasives Corp.) SAUNDERS, Hollis S. (E) O. Hcmmel Co., Box 475 Pittsburgh 30. Pa. SAUNDERS. R. H. (S) Charleston Clay Products Co. Box 349, Charleston 22. W. Va. SAUNDERS. Richard A. (S) 2626 Larwood Dr.. Charleston. W. Va. 'Charleston Cay Products Co.) SAVELL. Fred H. (M) Western Talc Co. 1901 E. Siauson Ave. Los Ange:es 53. Calif. 5AVIOLI. Francesco Isrituto Siderurgico rinsider Villa Brignoie-Corso F. M., Perrone. 24 Genova-Comigliano (Italia) SAWAI, Ikutaro Kyoto University. Kyoto. Japan SAWYER. E. C. (W) Central Silica Co., 306 Market St. Zaaesviiie. Ohio SAXE. Charles W. (R) 1 Wawecus Rd.. Worcester 5. Mass. (Norton Co.) SAXONBURG CERAMICS (George H. Aderhold) Box 100 Saxonburg, Pa. SCALES. John B. (BI) 456 Lynn Dr., Berea. Ohio (United States Stoneware Co.) SCHAA. Ferdinand A.. Jr. (WJ) 84 Paumanake Ave.. Babylon, N. Y. (Sylvania Electric Products Inc.) SCHAAL, Frank W.. Jr. (W) B. F. Drakenfeid Sc Co.. Inc.. Box 519 Washington. Pa. SCHABACKER. H. Eric (E) Erie 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 SCHAS7LE. Max Thayngen/SH. Switzerland (Tonwerke Thayngen A. G.) SCHAFER. C. B. (G) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5, Ohio Roster 93 SCHAXER. Burton E. iS/.i Webiinghuuse Electric Carp. Box Pittsburgh JO, Pa. SCHATZKIN. Harvey (W) Architectural Tiling Co. Inc. Cass/Jackson Sts.. Keyporr, N. J. SCKAUSS, Edward P. fG) 1253 Eleanor Ave., Toledo 12. Ohio (Owens-Illinois) SCHELL, Donald C.|(E) 2227 S. Gunderson, Berwyn, III. (Armour Research Foundation) SCHIEFFERLE, James A. (E) 4501 Station Rd., Ashrield Acres Louisville 5, Ky. (General Electric! Co.) SCHIEXE. Quentin J. (R) 7614 Kingston Ave.. Chicago 49, 111. (United States Steel Corp.) SCHIFFERLI. Leo M.. Jr. (R) 3001 Westmoor Dr.. Kokomo, Ind. (Haynes Steilite Co.; SCKLEGEL. Roland: F. Rua Ingiaterra 233. Sao Paulo, Brazil SCHLEHR, W. Raymond (Gl) Brockway Glass Co.. Inc. Lapel. Ind. SCHLOEMER. Hermann Mineralog Institution of Univ. Tuebingen, Bismarkstr. 50 Tuebingen, Germany SCHLOTZHAUER, Leon R. (R) R.R. 2. Painted Post. N. Y. (Corning Glass Works) SCHMID. Arthur WI (G) Arthur W. Schmid Co. 1414 Investment Bldg., 239 Fourth Ave. Pirtsburgh 22. Pa. SCHMID. Robert L.. Jr. (R) 125 Crottley Rd.. Shetland Hills Lutherville. Md. (Aluminum Co. of America) SCHMIDT. Beuther L. (R) Anchor Hocking Glass Carp. Lancaster. Ohio SCHMIDT. William iG. (S) Box 469. Altamont. N. Y. 'General Electric Co.) SCHMUNX. Louis (\V) 70 Dunedin Dr. Toronto IS, Ont.. Canada (American Radiator & Standard Sanitary of Canada) SCHNEIDER. LaVoy H. (E) 5 Maple Ct.. Hamilton. Ohio (Ferro Corp.) SCHNEIDER. Matthew ?.. Jr. (S) 2543 Louisa St.. Slidell. La. (St. Joe Brick Works, Inc.) SCHNEIDER. Samuel J., Jr. (RJI) J3J6 Lancer Dr., West Hyattsville, Md. (National 3ureau' of Standards) SCHOELLKOPF, 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. Zahe (WFI) Koppers Co.. Inc.. Research Dept. Koppers Bldg.. Pittsburgh 19. Pa. SCHOLES, Addison B. (G) Interlectric Corp., Warren, Pa. SCHOLES. S. R. (GF) Box 752. Alfred. ; N. Y. (State University of New York College of Ceramics) SCHOLS. Leon V. F. M. St. Lambertuslaan 4a Maastricht. Holland (Regout-Matthey) Vol. 35. No. 10 (1956) SCHOONOVER. I. C. ; 3 National 3ureau of Star.darcs Washington 25. D. C. SCHOTSMAN. J. Kruisstraat J1. Dieren. Netherlands (N. V. Enamei Works "de Yssei") SCHOTTLAND. A. H. (C) Standard Ben: Glass Co.. Butler, Pa. SCHOTTS. Waiter K. (MFD 23 E. Southington Ave. Worthington. Ohio (Harrop Ceramic Service Co.) SCHRADER, David M. (R) 742 Rotch Ave.. Massillon, Ohio (Republic Steel Corp.) SCHRAMM. Edward (Wr) Onondaga Pottery Co. Syracuse 4, N. Y. SCHRECKENGOST. Don (DF) 2617 St. Qair Ave. East Liverpool. Ohio (Homer Laughlin China Co.) SCHRECKENGOST. Viktor (D) 2265 Stillman Rd. Geveland Heights 13, Ohio (Salem China Co.) SCHRE3BER. Edward Box 948. Alfred. N. Y. SCHRICKEL. Herman H.. Jr. (G) 178 E. Pulteney St., Corning, N. Y. (Coming Glass Works) SCHROEDER. Fred W. (RFI) North American Refractories Co. 1012 National City E. Sixth Bldg. Cleveland 14, Ohio SCHROEDER. Herbert S. (R) 6 Conover Ln.f Red Bank, N. J. (Carborundum Co.) SCHROLL. J. R. (S) Manufacturers Equipment Co. 213 Madeira Ave., Dayton 4, Ohio SCHUCK. John F., Jr. (WI) R.R. 1, Apple Creek. Ohio (Alite Div.. U. 3. Stoneware Co.) SCHUETZE. Ervin W. (R) 23 Rock Springs, Mexico. Mo. (A. P. Green Fire 3rick Co.) SCHUH. Arthur E. (R) United States Pipe 3: Foundry Co. Burlington. N. J. SCHULHOF, Andres Lozadnr, Grandes Fabricas Argentina* de Ceramica, S. A. Boulogne. F.C.N.G.B. Buenos Aires. Argentina SCHULTZ. Donald G. (S) 3119 Woodworth. Hazelcrest, 111. (Chicago 3rick Co.) SCHULTZ. James 3. (G) 1321 E. Robinson St. North Tonawanda. N. Y. (National Gypsum Co.) SCHULTZ. John. Jr. (EJ) Battdie Memorial Institute 505 King Ave.. Coiumbus 1. Ohio SCHULZE. Robert H. (X) Advanced Vacuum Products. Inc. 22 Liberty St.. Stamford, Conn. SCHUMACHER. William G. (E) 5956 N. Glenwood Ave. Chicago 40, 111. (National Cylinder Gas Co.) SCHURECHT. H. G. (WFI) Champion Spark Plug Co. 8525 Butler Ave.. Detroit 11, Mich. SCHURTZ. D. D. (GF) Shar^Schurtz Co. 301--303 Lincoln Ave. Lancaster. Ohio SCHWAB. Leon 3. (R) 214 E. Home St.. Vandalia. Mo. (Harbison-Walker Refractories Co.) SCHWARTZ, Bernard (BI) 35 Dogwood Dr,. R. R. 2 Downingtown, Pa. (International Resistance Co.) SCHWA.RTZ. Jerome V*'. (W) Sascha Brastoi: Products, Lie. 11521 W. Olympic Blvd. Los Angeles 5*, Calif. SCHWARTZ. M. A. (BI) WCRRL. Aeronautical Research Lab. w.a.d.c. Wright-Patterson AFB. Ohio SCHWARTZWALDER. Karl (WFI) A C Spark Plug Div., Genera: Motors Corp. Flint 2, Mich. SCHWEICKHARDT. William K. (R) Walsh Refractories Corp. 10! Ferry St., St. Louis 7. Mo. SCHWEITZER. Howard V. (M) Schweitzer Equipment Co. 3764 Ridge Rd., Geveland 9, Ohio SCHWEXKLER. Edward P. 979 Grove St.. Elmira, N. Y. SCHWENKLER. Theresa A. (G) 979 Grove St., Elmira, N. Y. (Coming Glass Works) SCHWIETE, Hans-Ernst Institut fur Gesteinshuttenkunde Mauerstrasse 5. Aachen. Gennanv 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, X. Y. SCOTT. Robert M. (RI) 4619 Druid Ln., Dayton 9, Ohio (Norton Co.) SCOTT. Roger r. (GO 911 E. Main St.. Millville. N. J. (Armstrong Cork Co.) SCOTT, Roland F. (S) Brazil Public Library Brazil, Ind. SCOTT. W JL (WJ Western iiectric Co. Inc. 2525 Shaaeiand Ave. Inaianaoolis 6. Ind. SCOTT. Wiiliam D. 7707 Water St.. Olmstead Falls. Ohic SEA3R1GHT, Clarence A. (M) 2201 Wascana Ave.. Lakewood 7, Ohio (Harshaw Chemical Co.) SEA BRIGHT, Edward C. (E) 171 Beuiand. Mt. Gernens, Mich. (Philco Corp.. Range Div.) SEANOR. J. G. * Si 2300 W. Tuscarawas St. Canton 3. Ohio (Bonnot Co.) SEARCY, Alan W. (B) Division of Mineral Technology University of California Berkeley 4, Calif. SEARLE. Alfred B. 62, Moorcliffe, Skircoat Moor Rd. Halifax, York. England (Consultant) SEARSON. Leslie James Oakes *5c Co. (Riddings) Ltd. Jacksdale, Notts. England SEATON. Max Y. (RF) Food Machinery 3c Chemical Corp. 161 E. 42nd 5r.. New York 17, N. Y. SEBRING. George F. (W) Paper Makers Importing Co., Inc. 44 S. Second St.. Easton, Pa. SECKMAN. Harry D. (WI) 220 W. Third. Peru. Ind. i (Square D Co.) SECORD, Robert N. (W) Godfrey L. Cabot, Inc. Research <Sr Development Dept. 38 Memorial Dr.. Cambridge 42, Mass SEDENKA. Anthony (E) 1086 Magnolia Dr.. Washington. Pa (B. F. Drakenfeld A* Co.. Inc.) SEELEY. E. L. (W) 800 Lotus Ave., Chester, W. Va. (Harker Pottery Co.) Roster Gl SEEM ANN. Wiihrirn Pipersga:an j. Stockholm. Sweden SECELER. C. C. (M. American Gas Assn.. 4-0 Lexington Ave. New York 17, S. V. SEIDEL. Joseph i\V} 1253. E. Orange Sr.. Lancasrer. Pa. (Radio Corp. or America SEIPEL. Rober: B. ;G: Blue Ridge Glass Corp. Kingsport, Tenn. rEITZ. Woifram (G.> Glass Containers Ir.c. J601 Santa Fe Ave. Los Angeles 53, Calif. SELLERS. George A. (R) 315 E. Crescent Ave.. Elmhurst* 111. (Plibrico Co.) SELLERS. John T. (RI 52 Broadway, Jackson, Ohio (Durex Refractories Co.) SELSING. Jorgen (B) : 1316 Noble Sr., Barberton. Ohio (Ohio Brass Co.) SEMMELMAN. John O. (WI) Dentiats Supply Co. of New York College 5: Grantley Ave., York, Pa. SMM PLE, John Metai Porcelains Ltd. Incandescent Heat Group Cornwall Rd. Smethwick, Staffs. England SEMPLE. William A. (R) Aluminum Co. of Canada, Ltd. Gen. Tech. Dept , 1700 Sun Life Bldg. Montreal. Que., Canada SENBC, Johann Vienna XVII Dornbacherstr. 29. Austria (Radio Fabrilc IngeienPorzellan Fabrik) SENTERS. Walter (S) Washington Brick & Lime Co.. Box 2198 Spokane. Wash. SENTRY SANITARY CORP. (Marvin E. Abrams) Box 427 Mannington. W. Va. SEPHTON. H. J. (C) Dominion Glass v_o. Ltd. Chappie St.. Hamilton, Ont., Canada SERVICE PORCELAIN ENAMEL. INC (Paul S. Cecil) 3riU> & Christie Sts. Newark 5, N. J. SERVIS. Donald H. <W) Robertson Mfg. Co, Box 3^8 Trenton 5, N. J. SESLER. E. Clyde. Tr. (S) 1529 Alexander Circle. Pueblo, Colo. (Summit Pressed Brick <4 Tile Co.) SETCHEL. Hayden Merritt (G) 105 Tenth St.. Streator, III. (Owens-Illinois) SEVERIN. Harold Box 737. Alfred. N. Y. SEVERS1KE. Carroll L. (W) 23 Race St., Frenchtown, N. J. (Frenchtown Porcelain Co.) SEYBERT. Earl K. (R) Davison Chemical Co. Div. W. R. Grace 8c Co. 101 N. Charles St., Baltimore 3, Md* SEYMOUR. Samuel L. (G) 26 Crystal Dr.. Oakmont. 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. (Sylvanta Electric Products, Inc.) SHAH. Chunilal P. Bombay Potteries & Tiles Ltd. Pipe Rd., Xurla. Bombay 37, India SHALEK. Peter D. (W) 526 Lake St.. Oak Park, III. SHAND. Errol B. (G) 155 Reynolds Ave.. Corning, N. Y. (Corning Glass Works) SHAND, Ro.lgcr L. i.Ki 230 Wouiiale Rd. Oakviile. Ont.. Canada (Ferro Enamels (Canada) Ltd.). SHANDS. Everett H. (E) 1930 Harlem Blvd.. Rockford. 111. (O. Hommel Co.) SHaNER. Herbert J. (R) Ramtite Co.. 3563 W. ISth St. Chicago 3. Hi. SHANKS. Douglas Shanks 2: 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 63. N. Y. (Sylvania Electric Products. Inc.) SHARDLOW, L. Russel (BI) Radio Corp. of America Harrison, N. J. SHARP. Donald E. (GF) Libbey-Owens-Ford Glass Co. 1701 E. Broadway, Toledo 5. Ohio SHARP. F.. W. (Rl) Pedro. Ohio (Lawrence Refractories Clav Co.) SHARPE, Edwin F.. Ill 2255 Kennedy St.. ?hi!adeiph:a 37. Pa. SHAVER. Richard C. (B) 3 Hamilton St., Auburn. N. Y. (Cowles Chemical Co.) SHAVER. W. \V. (Gr) 130 E. Fourth St.. Corning. N. Y. (Corning Glass Works) SHAW, Anthony E. (S) Natco Corp., 327 Fifth Ave. Pittsburgh 22. Pa. SHAW. Clarence r. (WI) R. R. 1, Trevor. Wise. (Pickard, Inc.) SHAW, L. I. (XI) Club DeiMar. Santa Monica. Calit. (Consultant) SHAW. Myril C. (MFI) 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 SHAYNA. Michael (S) 506 S. Railway St. Swift Current. Sask., Canada (Perry Brick & Tile Co.) SHEARER. Walter L. (R) Bartley Crucible 2c Refractories. Inc. 15 Muirhead Ave.. Box 353 Trenton 3, N. J. SHEARER. Wayne 3. (E) 27 Fair-view 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. (RI) Battelle Memorial Institute 505 King Ave.. Columbus 1, Ohio SHELDON. John L. (G) 179 Dodge Ave.. Coming, N. Y. (Coming Glass Works) SHELDON. R. S. (E) 2215 Wilson Cl. St. Joseph, Mich. (Whirlpool-Seeger Corp.) SHELL. Haskiel R. (B) U. S. Bureau of Mines Electrotechnical Experiment Sta. Norris, Tenn. SHELLEY. C 3. (RI) General Refractories Co. 1520 Locust St., Philadelphia 2. Pa. SHELTON. Philo S. (GJ) 130 Burr St.. Fairfield. Conn. Vol. 3.5. Mo. 10 (1956) SHENANDOAH SILICA CO.. INC. (Herrcid D. Thropp) 190 W. State St.. Trenton S. N. J SHENANGO CHINA. INC. (Geo. B. Zaitniserj New Castle. Pa. SHEPHERD, John F. (El) Shepherd Chemical Co. 2303 Highland Ave. Norwood. Cincinnati 12, Ohio SHERK. Dor.aid (M) 213 Dalton Dr., BuEalo 23. N. Y. (National Gypsum Co.) SHERMER. Herman F. (G) 740 Northampton Dr. Silver Spring. Md. (Lrnited States Naval Ordnance Lab.) SHERRILL. Ernest (M) Westwood Ceramics Supply Co. 11250 W. Pico Blvd. Los Angeles 64, Caiif. SHERRILL. Robert R. (El) 425 Canyon Dr.. Glendale 6, Calif. (Bulwark Corp.) SHERWOOD. Robert F. (WFI) Ford, Bacon & Davis United States Operations Mission A.P.O. "4. 3ox K. c/o P.M. San Francisco. Calif. SHEVLIN. Thomas S (Rl) Engineering Experiment Station Ohio State University Columbus 10, Ohio SHIELD. Richard (WJ) 131 W. Harris. Apt. 7 San Angelo. Texas SHIFF. Tom (R) Villa Ridge Addition, R. R. 2 Godfrey, 111. (Laclerie-Christy Co.. (Div. H. K. Porter Co.) SHIM.ADA. Hachiro Shimada Glass Laboratory No. 2367. 1-Chome. Sanno Ota-ktt. Tokyo, Japan SHIMADA. Karo Toyo Glass Co.. Ltd. No. 47 Shimo-3-Chome Fukusnimaku. Osaka, Japan SHIMER. J. B. (Gl) Knox Glass Co. Knox. Pa. SHIMMAN. Norman C. (M) 2348 Ventura Dr.. R. R. 4 Wailed Lake. Mich. (Champion Spark Plug Co.) SHINN. Joseph M.. Jr. (R) 1908 Ramblewood Rd.. Apt. D Baltimore 14. Md. (Western Electric Co.) SHI PE. Paul J. (R) Moraine Prod. Div.. General Motors Corp. 1420 Wisconsin Blvd., Dayton 1. Ohio SHIPLEY. Linden E. (W) 92 Crestview Rd., Columbus 2. Ohio (Orton Ceramic Foundation) SHIPLEY. R. A. (S) Natco Corp.. 327 Fifth Ave. Pittsburgh 22. Pa. SHIPPY, Gordon D. (E) 2720 W. Chambers. Milwaukee. Wise. (A. O. Smith Corp.) SHIVELY. R. R. (Gr) 83 Woodland Dr., Pittsburgh 28. Pa. (O-nsultant) SHIVELY. Robert R.. Jr. (G) 2416 Gulf Bldg., Houston 2, Texas (Olin Mathieson Chemical Corp.) SHOEMAKER. George W. (S) Arfcetex Ceramic Corp.. 6 N. Walnut Sl Braiil. Ind. SHOFFNER. James E.. Jr. (G) 118 Cherokee Rd., Nashville 5. Tenn. (Ford Motor Co.) SHOFSTALL. N. F. (M) General Electric Co. 1311 LeMoyne Ave.. Syracuse. N. Y. Roster 97 SHOXEBARGEK. r. J. :Cl General Electric Co. Glass Technology Lab. 1133 E. 152r.d St., Cleveland, Ohio SHONKWILSR, Francis P. (R!) 2516 Milicrc Dr., Pittsburgh 34. 1'a. < Karbisar.-Walker Refractories Co i SHOOK, Thurston W. (M) 2:69 Mc'v'ey 3lvd.. W. Wor:h;r.gton, Ohio I Harrop Ceramic Service Co.,' SHOOK, Wiiiiam 3. (I; 04 Chatham Rd.. Columbus 14. Ohio SHOOT, Lyle E. (WJ) Box -191, State College, Pa. (Erie Resistor Co.) SHOPHER. Sterling D. (RI) 1120 E. Jackson. Mexico. Mo. i Mexico Refractories Co.) SHORTER. A. J. Bonnybricge Silica it Fireclay Co. Ltd. Boimytjrtuge. Stirling, Scotland SHORTER. W. H. (G) Ernharr Manufacturing Co. 333 Homestead Ave., Hartford 2, Conn. SHREMP, Raymond M. (R) 227 S. Clay St.. Zeiienople, Pa. (Lava Crucible-Refractories Co.) SHUMAN. Albert (C) Polarizing Instrument Co. Irvington-on-Hudson, New York. N. Y. SICKER. Richard iS7 Park Ave., East Orange. N. J. SIDDIQ1. Iftikhar A. 4223 12tb N. E.. Seattle 3. Wash. SIDWELL, John L. (M) H. C. Spinks Clay Co., Inc. 1000 Firs: National Bank Bldg. Cincinnati 2. Ohio SIEBACH. Ralph E. 1J1 Rebecca St.. Kittanning, Pa. SIEBER. Kari E. (Gi Corning Glass Works. Albion. Mich. SIEBERT. Robert (S) Dennings Point 3rick Works, Inc. 3ox 150. Beacon. N. Y. SIEFERT. A. C. (GF) Owerts-Corttirtg Fiberglas Corp. Newark. Ohio SIZGWALO. Clyde R. (WI) 4422 San Carlos Ave.. Tampa. Fla. (Tiffanv Tile Co.) SIEKMANN. John F. (R) Aluminum Co. of America :20 N. Michigan Ave.. Chicago 11, 111. SIEVERT, Guiiio E. fR) SJ3 Oregon Ave.. San Mateo. Calif. (Gladding. McBcan & Co.) SIGWART. Harry J. (G) 722 3eechurst 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. Brierlev Hill. Stans. England SILVERMAN. .Alexander (GFI) . University oi Pittsburgh 2525 Cathedral of Learning Pittsburgh 13. Pa. SILVERMAN. William B. (GFI) Owens-Illinois. Technical Center 1700 X. Westwood Ave., Toledo 1, Ohio SIMAVILLA. Juan M. Cristaierias Rigollean S. A. Bcrazaceqni, F.CCf.G.R. Buenos Aires. Argentina SIMCOCX. H. J. "Cranford.'' Lovatt Ave. Milehousc. Newcastle Stafford. England SIMISON. A. L. (GI) - Owens-Coming Fiberglas Corp. Toledo. Ohio SIMMEN, Fred G. (W) 964 Terrace Blvd., Trenton 8, N. J. (Fairfacts Co.) Vol. 35, No. 10 (1956) SI.MMING5KOLD. 3o Glasir.stitucc: i Yaxjo, Smedjegatan 3 Vaxjo. Sweden SIMMONS. E. E.. Jr. (il) 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. ioth it.. Cleveland 5. Ohio SIMON, A. G. (W) 8530 Wentworth St.. Sunland. Calif. (Gladding, Mc3ean it Co.) SIMONDS WORDEN WHITE CO. (F. R. Henry) 1101 Negley PI. Dayton 7, Ohio SIMONS. T. Mitchell, Jr. (WI) 9136 E. Jayiee Dr. Temple City, Calif. (3. F. Wagr.er & Co.) S1MONSZN, Eduardo C. Companhia Paulista de Mineracao Caixa Postal 3008. Sao PauJo, Brazil SIMONSEN, Victor G. Ceramics Sao Caerano S. A. Caixa Postal 273. Sao Paulo, Brazil SIMONSON, Robert B. Harvey Aluminum Co. 190th it Western, Torrance, Calif. SIMPSON, Frederick H. (EJ) 1521 W. 51st., Seattle 7. Wash. (Boeing Airplane Co.) SIMPSON, Harold E. (GF!) State University of New York. College of Ceramics, Alfred, N. Y. SIMPSON. John A. (S) F. B. McFarren Ltd. Streetsville. Ont.. Canada SIMPSON, John D,, Jr. (S) Statesville Brick Co., Box -z71 Statesville. N. C. SINCERE. John F.. Jr. (EJ) 5325 W. Henderson Ave. Chicago 41. 111. (Industrial Publications. Inc.) SINCLAIR. Robert R. (RI) 510 S. Osage Ave.. Inglewood. Calif. (Missouri Refractories Co.) SINGER. Felix (F) Keramos House, *6. Castlemaine Ave. South Croydon, Surrey. Engiand (Consultant) SIQUEIRA. Pedro M. Ceramics Sao Caetano S- A. Rua Boa Vista 34-6* Sao Paulo, Brazil SIROVY. George (E) Century Vitreous Enamel Co. 6641 S. Narragansett Ave. Chicago 38, 111. SISKA. Albert H. (El) 822 Ellis Ave., Ashland. Ohio (Ferro Corp.) SISSONS. Gordon H. (S) 320 First St. Medicine Hat. Alta. Canada (Medicine Hat Brick it 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. SKEOCH. Walter K. (M) Southern California Minerals Co. 320 S. Mission Rd. Los Angeles 33, Calif. SKINNER. Kenneth G. (RI) 4223 First St.. S. E-. Apt. 203 Chesapeake Gardens Washington 20, D. C. (Naval Research Laboratory) SKOGEN. Haven S. (G) 2524 N. Dora. Franklin Park. III. (E. I. du Pont de Nemours It Co.) SKURCENSKI, Anton (G) H. I. Thompson Fiber Glass Co. 173J Cordova St., Las Angcics 7, Caiif. SKWARLO, Edward (G) 706 S. ioka. Mount Prospect, 111. (Vacuum Ceramics. Inc.) SLAUGHTER, James A. (G) Pittsburgh Plate Glass Co.. 3ox 15 Crystal City. Mo. SLAUGHTER, John l. (3) Corning Glass Works Res. i Development Div. Comtr.g. N. Y. SLAYTER. Games (GF) Ower.s-Coming Fiberglas Corp. Case Ave., Newark. Ohio SLICK. E. S.. 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. Carlton F.. Jr. (RJ) 9 Hawthorne Rd.. Cinnamon Hill Bridgeport. ?a. (E. J. Lavino St Co.) SMALLEY, Howard F. (E!) Peraco Corp.. Research Div. 2554 Grcer.mount Ave. Baltimore 18. Md. SMELT, J. A. M. Bibliotheekcentrale 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. 1. Carey. Ohio (Porcelain Products Co.) SMITH. .V'ltr. M. 3ox 70-105, Havelock, N. G. SMITH. A. O.. CORP. (W. A. Deringer) 3533 N. 27th St., Milwaukee 1. Wise. SMITH. Arnold N. Pilkington's Tiles Ltd. _ Clifton junction. Manchester, England SMITH. C. A. (RF!) Mexico Refractories Co. Better Refractories Bldg.. Mexico. Mo. SMITH, Dudley C. (G) Oakdale Dr., Millville. N. J. (Kimble Glass Div., Owens-Illinois) SMITH. Earl R. (G) Pittsburgh Plate Glass Co. Works No. 25, Greensburg, Pa. SMITH. Eills E.. Jr. (3) 527 North St.. East Aurora. N. Y. (Whittaker. Clark it Daniels. Inc.) SMITH. Gail (G) Coming Glass Works, Corning, N. Y. SMITH. G. Sherwood Department of Ceramic Technology Pennsylvania State University University Park. Pa. SMITH. Harlan D. (R) Weilsville Fire Brick Co. WeUsville. Mo. SMITH. Harry W. (W) Old Town Rd.. Shelton. Conn. (American Lava Corp-) SMITH. Herbert A. (D) Palm, Fecbteler St Co., Box 750 East Liverpool, Ohio SMITH. Hillard A. (WI) 28 Buchanan Rd.. Metnchen, N. J. (Rbecm Manufacturing Co.) SMITH. Howard J. (W) 51 Godwin Ave., East Paterson. N. J. (Titanium Alloy Mfg. Div., National Lead Co.) SMITH. H. Russell (M) Box 757, East Liverpool. Ohio (Croxall Chemical it Supply Co.) Roster 99 SMITH. Jane. l meet: Fireclay Products. Ltu. I -0 V.' George St. Glasgow C. 2., Scotiar.d SMITH, Ja--cs N.. Jr. (Dl ".a.rboriacp.". R. R. i, Xcw Bern. X*. C. i X'e'.v Bern H:sh School; SMITH, r. Err.es: I.K) 233 River-.a Ave.. Sarasota. r;a. ! Ceram-1-Cast Corp.! SMITH. Joan Jacob C`icoa Pactr.c Ave.. 3raciver.r:dge. Pa. i Pi:tsb'jr;n Plate Glass Co.) SMITH. J. Ryan, (W) Fairtacts Co.. Fairfacts St. Trenton 3, N. J. SMITH. J. Talbot (M) 217 Elm Ave.. Morrisville. Pa. (United Clay Mines Corp.) SMITH. Karl W. (R) Charles Taylor Sons Co. 3ox 53 Annex Sta. Cincinnati 13, Ohio SMITH, Kenneth E. (DFI) .American Art Clay Co. 1717 W. 16th St. Indiar.aooiis 44, Ind. SMITH. Leland (SI) Boa 291, Darlin^ron, Beaver Co.. Pa. (Central Commercial Co.) SMITH. Peter W. (W) Cladding, McBean 4 Co. 2901 Los Felix Blvd. Los Angeles 39, Calif. SMITH. Ralph Ogden (G) 30 Chestnut St.. Salem, N. J. I Gayner Glass Works) SMITH. Richard D. (I) Ferro Corp.. Far East Div. 1.(0 Nathan Rd.. 205 Princess Bldg. Kowloon, Hong Kong SMITH. Richard M. (R) 215 Seneca St.. Corning. N. Y. (Coming Glass Works) SMITH. R. K. (P.) 1-9 Reynolds .Ave.. Coming. N. Y. (Coming Glass Works) SMITH. Ronaid j. Box 317. Allred, N. Y. SMITH. Rowiarc D. (GI i2 WoodJawn .Ave.. Corning, N. Y. i Corning Class Works) SMITH, R. Thomas 206 W. Ninth St.. Rolta. Mo. SMITH. Rufus J., Jr. (S) 306 S. Jerrerson St., Goldsboro, N. C. ( E. I. go Pont de Nemours & Co.) SMITH. Sidney L. !6 Munson St.. Le Roy, N. Y. SMITH & STONE. LTD. (T. Woid) Georgetown. Ont., Canada SMITH. T. Sydney Brightwood. Va. SMITH. Walter F.. Jr. (M) United Clay Mines Corp. 101 Oakland St., Trenton 6, N. J. SMITH. William E. (G) 5030 Janet. Sylvania, Ohio (Owens-Illinois) SMITH. William L. (M) Harris Clay Co., Spruce Pine. N. C. SMITH, William R. 20 DeLancy Dr.. Geneva, N. Y. SMOCK. Alden W. (G) II Euclid Ave., Columbus 1. Ohio (North American Aviation Inc.) SMOKE, Edward J. (W) 11 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, James P. (WJI) Box H23. Chattanooga. Tenn. (American Lava Corp.) Vol. 35, No. 10 (1956) SMYTH. Harold 7 iCi New Jeraev Ceramic Research Station Ru*era e: ait v. New Brunswick. N. j. SNELL, Richard C G; 171/ Caiurr.e: Ac.. Tcieuo 7, Ohio (Libbey-Owens-Ford Glass Co.) SNIDER. Car: A.. Jr. (G) 4320 Girard Rd.. Pittsburgh 27, ?a. [Kaiser Aluminum i Chemical Saies. Inc.; SNIDER. Stuart M. ..S) J25 Club Dr., Salisbury, N\ C. (Taylor Ciay Products Co.) SNODDY. John H. < W) Gladding, McBcan dc Co. 2901 Los Feiiz Blvd. Los Angeles 59. Calif. SNOW. L. James (Si Mifflinviile. ?a. (Alliance Clay Product Co.) SNOW. Roland 3. (RF) United States Steel Corp. Applied Res. Lab.. Monroeville, Pa. SNYDER. Ernest 3. (RI) Wheeling Steel Corp. Steubenville South Plant Steubenville, Ohio SNYDER. Nicholas H. (W) 531 Mapie Ave., Trenton 3, N. J. (Rutgers University) SOBON. Leon E. Box 787, Alfred. N. Y SOCIETA ITALIANA REFRATTARI MARGHERA A2IONARIA (Domenico Giacomeili) Via Industrie 52, Caseila Postale 308 Marghera. Venice. Itaiv SOCIETE FRANCAISE DE CERAMIQUE (Y. Letort) Service de Documentation 23. rue de Cronstadt Paris XV*. France SOCIETE PROFESSIONNELLE DES PPODUITS FRANCAIS DE TERRE CUITE CM. Jacques Labansat) 23. rue de Cronstadt Paris XV. France SOCIETY OF GLASS TECHNOLOGY (R. W. Douglas) "Thornton" Hallam Gate Rd.. Sheffield 10. England SOCONY MOBIL OIL CO. (W. B. Stevens) *50 E. -2nd Sr.. New York 17. N. Y. S0DERS7RUM. William X. (SI) 37-1 Davis Rq.. Batavia, 111. (Structural Clay Products Research Foundation) SOLOMON. Earl (RI) 1657 Boston Ricge 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. Weilesley ?!., Calcutta 1, India SOMERS. A. J. Borax Consolidated, Ltd. Borax House. Carlisle Pi. London SAV.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) Parien City Pottery Co. Paden City. W. Va. SONENSHIN'E. Lewis (WJ) 2141 Holland Ave. New York 64. N. Y. (Mucon. Inc.) SONTZ. Arthur >. R 11 305- S. Crandon Ave.. Chicago i7, III. (United States Stcei Corp.) SOSMAN. Robe:: 3. (Honorary, BFI) School of Ceramics, Rutgers University New Brunswick. N. J. SOUTH. Furman. Jr. (S'. Lava Crucible-Refractories Co. Firs: National 3ar.k Bldg. Pittsburgh 22. ?a. SOUTHERN POTTERIES, INC. (H. \V. Kibier) Box 279 Erwin, Ter.n. SOWERS. Robert M. (G) 3 Edgercon Ln.. Dearborn, Mich. (Fora Motor Co.) SOWMAN. Harold G. (R) 1480 Grand Blvd.. Schenectady, N. Y. (Kaoils 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) SPA NGEN BERG. William C. (MI) 730 E. Fillmore Ave. East Aurora. N. Y. (Titanium Alloy Mfg. Div.,) National Lead Co.) SPARKS. Edgar W. (W) 406 Unaka Way, Erwin, Tenn. (Southern Potteries. Inc.) SPARROW. Paul F. (R) 2447 Old Washington Rd. Bridgeviile. ?a. (Norton Co.) SPEIL. Sidney (GI) Johns-Manville Research Center Manville. N. J. SPENCE. C. F. iE) 1005 Hartford St.. Worthington. Ohio (Chicago Vitreous Corp.) SPENCE. Harold I. Klabin Irmaos 3: Cia Av. Suburbana. 5472 Rio de Janeiro. Brazil SPENCER. Charles D. (GF) 2113 Taylor Rd., Cleveland 12. Ohio (Lamp Dept.. General Electric Co.) SPENCER-STRONG. G. H. (Erl) 109 Witherspoon Rd.. Baltimore 12. Md. (Pemco Corp.) SPSNGLER. H. H. (G) General Electric Co. Lamp Div., Glass Technology Lab. 1133 E. !52nd Sc.. Cleveland 10. Ohio SPERRING. Richard F. (GJ) 138 37th St., N. E. Cedar Rapids. Iowa (Pittsburgh Plate Glass Co.) SPINKS. 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. SPIRKO. Edward J. Box 327. Alfred. X. Y. SPLANN. Mary Theresa (G) Coming Glass Works, Coming, N. Y. SPOERRY, Henry J. Schmidheiny & Co.. Ltd. Heerbrugg, (St.G.) Switzerland SPRIGGS. Richard M. 408 W. Nevada St.. Urbana, III. SPROAT. Ira E. (WFI) 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.. Wilton, Conn. ( Machiett Laboratories) Roster 101 SPYUT. Albert 3 i.G, Raythecr. Manutacturing Co. 55 Chapel S:.. N'tiior., Mass. SQUARE D CO. (Ralph E. Hanr.a) Molded Insulation Div., Ptru, Ind. . SQUIER, Arthur A. (S) 1616 Wainut St.. Philadelphia 3, Pa. (Distributor: p STAATLICHE PORZELLAN- MANUFaKTUR 3ERLIN i Gerhard MuilerJ Kartmarnstrasse 1-3 (13a) Seib/Oberfr. U. S. Zar.e, Germany STAATS. Henry >3. (E) Applied Research,: Inc. 135 S. LaSalle St.. Chicago 3, 111. STACH. Otto R. (R) 90 W. Grimsby Rd. Kenmore 33. N. Y. I Carborundum Co. ; STADLER. Leo E. (G) 1057 Plymouth St... Windsor. Conn. (Hartfcrd-Empire Co., Div. Emhart Mfg. Co.) STAfFICRER. Charles F. (G) .506 Grandview- Avcl. Vineland, N. J. iKimtie Glass Co.) STAFFORD. Ray (M) Southern Calif. Minerals Co. 320 S. Mission Rd. i Los Angeles 33, Calif STAFFORD, W. L. (RFI) Jchns-Manville Research Center Box 159. Manviile. N. J. STAHMA.Y.Y, John A.r(B) 4375 Verdugo Rd. Los Angeles 65. Calif. (Gladding, McBean 4 Co.) STALEGO, Charles J. (G) 237 N. Fifth St., Newark. Ohio (Owens-Coming Fiberglas Corp.) STALTER. Thomas L.;. (I) 71 )V. Norwich Ave.. Coiumhus 1, Ohio STAMPS. Murray R. |(W) Canadian Porcelain Co. Lid. Box a23, Hamilton; Ont., Canada STANDARD 3RICK 4 TILE (Clifford A. Kleymeyer) 123 N. '.V. Fourth St. Evansville ?, Ind. CORP. STANDARD ULTRAMARINE 4 COLOR CO. (L. F. May) Huntington 13, W. Va. STANGL. J. M. (W) . Stangi Pottery, Trenton 4, N. J. STANGL POTTERY (J. M. Stangi) Trenton 4, N. J. STANISLAVV. T. Stanley (W) Box 354. Centerport. L. I., N. Y. (Sylvania Electric, Products. Inc.) STANLEY. George VI (E) 2752 W. 90th ?I. I Evergreen Park 42, 111. (Crane Co.) STANLEY. Robert J. (G) M. H. Detrick Co.. 10600 Puritan Ave Detroit 33. Mich. STANNARD. Wilford T. (D) J. A. Deaouch Co., 608 Harrison St. Oak Park. III. STANSFIELD. James1 R. D. (S) StTeator Brick Co. Div. Hydraulic-Press Brick Co. Streator, IIL STANWAY. Miss 3. Elm Works Ltd.. Summerstown, Tooting London S. \V. 17. England STANWORTH. John Edwin 74 Ashlawn Rd., Rugby Warwick, England (British Thomson-Houston Co., Ltd.) STAPLETON. Robert E. (W) 22 Chestnut St.. Franklinville, N. Y. (Hi Q Div.. Aerovox Corp.) Vol. 35. No. 10 (19561 STAI'P, John A.. Jr. (G, Union Carbide 55 Carbon Corp. Silicones Div. E. Park Dr. & Woodward Ave. Tor.awanda, N. Y. STAR PORCELAIN CO. (Daniel W. Luks) Muirhead Ave., Trenton 9. N. J. STARK CERAMICS. INC. (J. H. Stewart) 3ox 230 Canton 1. Ohio STARK. R. E. (W) R. R. 5. Greensburg. Pa. (Stupakorf Div.. Carborundum Co.) STARK. W. F. (E) Promat Division. Poor 4 Co. Sal S. Market St.. Waukegan, 111. STARKEY. Daryte D. (M) R. R. 1, Willard, Ohio (Starkey Engineering 4 Machinery Co.) STARKEY. Edward A. (M) 1068 Woodhill Rd., Mansfield, Ohio (Starkey Engineering 4 Machinery Co.) STARKEY. Elmer A. (R) 22397 Fairlawn Circle. Apt. 10 Fair-view Park 26, Ohio (North American Refractories Co.) STATHIS. Andrew W. (RI) 5917 Cary, Cincinnati 24, Ohio (Charles Taylor Sons Co.) STAUDT. August (W) 264 Water St., Perth Amboy. N. J. STAUFFER CHEMICAL CO. (M. P. Kerins, Jr.) 380 Madison Ave., New York, N. Y. STAUFFER, Kenneth H. B. (W) Robertson Mfg. Co., Box 848 Trenton 5, N. J. ST.WROLAKIS. J. A. (B) 915 Leonard Dr., Rock Hill 19. Mo. (Crucible Steel Co.) STEARNS. William E. (E) A. O. Smith Corp. 5533 N. 27th St.. Milwaukee. Wise. STECK. C. 0. (G) F. J. Kress 3ox Co.. One 2Sih St. Pittsburgh 22,- Pa. STEELE. A. Preston, Jr. (S) J. C. Steele 4 Sons. Inc. Box 951. Statesville. N. C. STEELE. C. N. (S) J. C. Steele 4 Sons. Inc. Box 951. Statesville. N. C.. STEELE. F. Montgomery (S) I. C. Steele & Sons. Inc. Box 951. Statesville. N. C. STEELE. G. Allen (R) 101 MacGregor Dr., Trotwood. Ohio fSimonris Worden White Co.) STEELE. Hairy 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. STEELE. J. C.. Jr. (SF) J. C. Steele & Sons, Inc. Statesville, N. C. STEELE. J. C,, * SONS. INC. (J. C. Steele, Jr.) Statesville, N. C. STEELE. Richard E. (M) Ram, Inc., 1064 W. Fifth Ave. Columbus 8, Ohio STEELE, William Perrin (S) Pine Hall Brick 4 Pipe Co. Winston-Salem, N. C. STEFL. Donald J. (R) Freeport Brick Co. Box 402, Freeport, Pa. STEIL. Roy C. (G) 3450 Garfield St., Denver 5, Colo. (Woodbury Chemical Co.) STEIN. Colin H. 7 Melville Terrace. Stirling, Scotland (John G. Stein & Co.. Ltd.) STEIN, Ronald C. Messrs. John G Stem 4 Co., Ltd. 3onnybr:dge. Scotland STEIN, Sidney J. (3) International Resistance Co. 401 N. Broad St., Philadelphia 3, Pa. STEIN BOCK. . A. (R) Whip-Mix Corp., 411 W Avery St. Louisviile 3. K>\ STEINER. Harry C. (0; General Electric Co. Power Tube Dept. Schenectzcv N. Y. 3TE1NHOFF. Fred L. (Wrlj Brick cr Cloy Record--Ceramic [ndusiry 5 S. Wabash, Chicago 3. 111. STE1NROEDER. Fritz Didicr-Werke A. C., Lcssingsir. 16 Wiesbaden. Germany STELLE, John A. (S) Arketex Ceramic Corp., Brazil, Ind. STENQLTST. Donald R. (XJ) Box 663, Redmond. Wash. (Boeing Airplane Co.) STEPHENS. Dan E. (R) North State Pyrophyllite Co. Pomona. N. C. STERLING CHINA CO. (William T. Pomeroy) East Liverpool. Ohio STERLING GRINDING WHEEL 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 Filth N. E.. Seattle 5, Wash. (Boeing Airplane Co.) STETSON. Harold W. (B) R. R. 2. Painted Post. N. Y. (Corning Glass Wot Its; STETSON, William C. (WI) Box 44, Saxonburg, ?a. (Saxonburg Ceramics) STETTINIUS. K. E. (W) Lapp Insuiator Co., Inc.. Le Roy, N. Y. STETTNER. Donald H. (Ei) 976 Center Ave., Lancaster, Pa. (Radio Corp. of America) STEUBENVILLE POTTERY CO. (W. J. Mould) 3ox 1030 Steubenviile. Ohio STEUERNAGLE. J. H. (G) Brockway Glass Co., Inc. Wood St.. 3rockway, Pa. STEVENS. E. G. 1420 N. Hermosa Ave. Hermosa Beach, Calif. STEVENS. Frank J. (WI) 414 Prospect St.. Nutley 10, N. J. (Isolantite Mfg. Corp.) STEVENS. Joe (R) Murray Refractories Co., Box 338 Murray, Utah STEVENS. L. M. (R) 2907 Alabama St., La Crescenta, Calif (Gladding, McBean 4 Co.) STEVENS. Robert P. (RI) Chicago Fire Brick Co. 1625 W. 104th PI.. Chicago 43. III. STEVENS. W. B. (W) Socony Mobil Oil Co. 150 E. 42nd Sl. 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 Roster 103 STEWART, Aid (E; NitionlJ Lud Co., Ill Broadway New York 5, N. V. STEWART. Isaac (G) New York Tejticj Laboratories, Inc. 47 West New York 6. N. Y. STEWART, H. (S) Stark Ceramics. Ir.c., Eox 230 Canton 1, Ohio STEWART. John A. (Gi) 4 19 Locust Ave.. Washington, l'a. (3. F. Drakenteid & Co.. Inc.) STEWARTTMaicoitn (M) Commercial Minerals Co. 310 Irwin St., San Francisco 7, Calil. STEWART. Wilfred H. (R) L'nited States Reduction Co. 4610 Melville. East Chicago, Ind. STICKEL, William C. (R) Aluminum Co. of America 123 S. Broad St., Philadelphia. Pa. STIEF. W. C. (W) Alt. Clemens Pottery Co. 138 S. Wilson 31vd., Mt. Clemens, Mich. STILL, Henry P.. Jr. 31 Stoneleigh Rd.. Worcester 6, Mass. (Norton Co.) STILLWATER CLAY PRODUCTS CO. (J. P. Dutfv) Lock Drawer 32 L'hrichsviile, Ohio STOCK. Donald ?. (R) 289 Maxwell Dr., Pittsburgh 36, Pa. (Harbison-Waiker Refractories Co.) STOCKDALE. George F. (G) 49 Corning Blvd., Corning, N. Y. (Coming Glass Works) STOCXSLAGER. Theodore F. (W) Carborundum Co. 24800 Lakeland Blvd. Cleveland 32, Ohio STODDARD. Stephen D. (RI) 2974 3 Walnut. Los Alamos, II. (Los Alamos Scientific Laboratory) STOEN. Reger C. (SI) Canneltcn Sewer Pipe Co. Canneltcn. Ind. . STOHL. Alfred A. (W) 374 North St.. Sun prairie. Wise. (Wisconsin Porcelain Co.) STOHL. L. A. (W) Wisconsin porcelain Co. 120 Lincoln St., Sun Prairie. Wise. STOIA. Pfc. John Z. (WJI) L'S 32373933. Btry 3663rd F.A. 3n. APO 331. San Francisco. Calif. STCLLER. Arthur I. (WJ) Radio Corp. of America Princeton. N. /. STOLTE. Norman H. (El) 3974 Orchard Rd. Cleveland Heights 21. Ohio (Harshaw Chemical Co.) STONE. 3enjamin (W) California Crafts 43J40 N. Gratiot. Mt: Clemens. Mich. STONE. Conrad A. (G) 93 S. Remington Rd. Bexiey, Columbus 9, Ohio (Federal Glass Co.) STONE. C. ?. Ferramic Industries. Ltd. 2S 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. STONE. Robert L. (BFI) Dept, of Ceramic Engineering University of Texas. Austin 12, Texas STONE. S. A. (M) Deister Concentrator Co. 901 Glasgow Ave.. Fort Wayne, Ind. STONG. Guy E. (G) 926 W. Water St.. Elmira, N. Y. (Corning Glass Works) Vol. 3.5. ^o. 10 (19.56) STOOKEY, S:an)ey D. (.Or) 145 Pritchard Ave.. Coming, N. Y. (Corning Giass Works) STOOPS. Robert F. (RI) Metallurgical Product* Dept. General Electric Co.. Box 217 Roosevelt Park ?. Q. Detroit 12. Mich. STORER-FOLT. John ?. (RJI) l Beniamond Ave.. Apr. E. Toronto 13. One.. Canada ( Refractories Engineering & Supplies. Ltd.; STOTT, A. E. Edward Johns & Co.. Ltd. Armitage Sanitary Pottery New Rugeiey. Sranord, 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 Sc Thermit Corp.) STOUT, Lester L. (B) Ohio State University Research Foundation Columbus 10. Ohio STOVER. Edward R. (B) General Electric Co. Research Lab. 243 MB Box 1083, Schenectady 3, N. Y. ST. PIERRE. Philippe D. S. (B) Qencr^\ Electric Co.. Research Lab. Metallurgy Sc Ceramics Div. Box 1038. Schenectady, N- Y, STRADLEY, J. Grant (I) 1950 Korbel Ave.. Lot 93 Columbus 11. Ohio STRADLEY, Norman (EM Minnesota Mining & Mfg. Co. 2301 Hudson Rd., St. Paul 6. Minn. STRAIGHT. Lee H. <S> Iowa C!ay Products Co. Centerville. Iowa STRAIN, R. E. (E) Alliance Ware. Ltd. Box 550. Vancouver, 3. C., Canada STRATTON. Warren 3711 15th N. E., Seattle 5, Wash. STRATTON. Mrs. W. 3. (D) Pewaoic Pottery. 10125 Jefferson Ave. Detroit 14. Mich. STREATOR BRICK CO.. DTV. HYDRAULIC-PRESS BRICK CO. (James R. D. Stansheid) Streator. III. STRIMPLE. J. H. (B) National Lead Co.. Titanium Div. Box 53. South Amboy, N. J. STRINGFELLOW, Allen E. (R) 544 Woodland Ave.. Haddonneld, N. J. (1'T-E Circuit Breaker Co.) STROD. Arvid J. (El) Industrial Metals Improvement Co. The Park Bldg., Pittsburgh 22, Pa. STRONG. Kenneth B. (W) 4624 3elmont Park Terrace Nashviile 12. Tenn. (Titanium Alloy Mfg. Div., National Lead Co.) STROTT, Adolf J. (R) Kearfott Co.. Inc., Ceramic Dept. Little Fails, N. J. STROUD. Harold L. (M) 2909 Bembridge Rd.. Royal Oak, Mich. (Champion Spark Plug Co.) STROUP. Philip T. (R) Aluminum Co. of America Box 772, New Kensington. Pa. STROUPE. Howard E.. Jr. (WI) Wheeling Tile Co.. Wheeling, \V, 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. III. STRUZ3ING. Harold J. <R) 1215 Military Rd.. Buifaio 17. N. Y. (Richard C. Remrr.ey Son Co.) STUART, Deraid A. (3) Taurstcn Hall, Cornell University Dept, of Er.gr. Mat., Ithaca. N. Y. STUB3INS. William J. (W) Rio Aloyac 26-jA Mexico 5, D. F. (Consultant) STUBBS. John M. (Ml National Gypsum Co. 3013 Eoudinot Ave. Cincinnati 33, Ohio STUCKEY. Jasper L. (X) 1911 Sunset Dr., Raleigh, N. C. (North Carolina Dept, of Conservation Sc Development) STUNTZ. Robert ?. (R) Babcock k Wilcox Co. 105 S. LaSalle, Chicago 3, 111. STUPAKOFP DIV. CARBORUNDUM CO. (Semon H. Stupakoi?) Latrobe, Pa. STUPAKOFF, Semon H. (W) Stupakoi? Div., Carborundum Co. Latrobe. Pa. STYER, Charles A. (R) 11 Roxtury Rd.. Forest Hills Pittsburgh 21. Pa. (Vesuvius Crucible Co.) STYHR, Karsten H.. Jr. 111 S. Fourth Ave. Highland Park. N. J. SUBBARAO, Eleswarapu C. Pennsylvania State University College 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.) SU3RAMANIAN D. R. Burn Sc Co. Ltd. Refractory 5c Ceramic Group 12 Mission Row. Calcutta 1. India SUCH CLAY CO. f.M. M. McKose. 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) Coming Glass Works. Coming, N. Y. SULLIVAN. John D. (BFI) Bartelle 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 k Lomb Optical Co.) SUMMERS. E. W. (G) Owens-Illinois. Technical Center 1700 N. Westwood Ave. Toledo 7. Ohio SUMRELL. Ferrall N. (E) 707 Henry St.. Uniondale. L. I., N. Y (Hardwick. Hindle, Inc.) SUN. K. H. (GF) 2131 Lindsay Rd., Pittsburgh J5, Pa. (Westinghouse Electric Corp.) SUPAR Ceramic Institute Bandung, Java, Indonesia SUR ENAMEL & STAMPING WORKS. LTD. (M. M. Sur) 24 Middle Rd., EntaUy Calcutta 14, India SUR. M. M. Sur Enamel k Stamping Works. Ltd. 24 Middle Rd., Fatally Calcutta 14, India SURFACE COMBUSTION CORP. (Harvey C. Weller) 2375 Dorr St. Toledo l, Ohio Roster 105 SURFLEET. Harold Kaylene Laboratories. Y.'itcrioo Ril. London. N. W. 2, England (Kaylene (Chemicals) ;L:d.) SUTHERLAND, Clark (S) Robinson Clay Product Co. 65 \V. State St.. Akron 9. Ohio SUTHERLAND. Frank R. (RI) ill Rainbow Dr., Kokomo, Ind. ( Haynes Stellite Co.) SUTPHEN. F. G. (X; , 2505 Central Ave.. Middletown. Ohio SUTTON. Paul M. (C) Coming Glass Works,, Corning. N. Y. SUTTON, Willard H. Pennsylvania State University Mineral Industries 3!dg. University Park, Pa. SUTTON, W. J. (RI) 24 High St.. Alfred. N. Y. (State University of New York, College of Ceramics) SVEC. J. J. (Wl) 3440 S. Euclid Ave.. Berwyn, III. (Industrial Publications Inc.) SWAIN, Richard S. 509 Kibler Ave., Newark. Ohio SWALM. Phaon H. (W) j! Box 173. Kingston. Cnt.. Canada (Frontenac Floor it Wall Tile Co., Ltd.) SWANSON. Carl H. 770 Techwood Dr.. N. W., Atlanta, Ga. SWANSON. Leroy M. 34 Hudson St., Worcester, Mass. SWEARINGEN, Jack C. (G) United Can it Glass Co. Box 90, Hayward. Calif. SWEITZER. Mark (W) 747 N. Mentor. Pasadena, Calif. (S. Paul Ward. Inc.), SWENTZEL. John ?. (RU 8960 Hennepin Ave. Niagara Falls, N. Y. (Carborundum Co.) j SWEO, Benjamin J. Ferro Corp. ! 41S0 E.1 56th St.. Cleveland 5, Ohio SWICA. Joseph J. ' Box 165. Alfred. N. Y. SWICXER. Victor C. (Gr) 907 rlorai Dr., W'biitter, Calif. (Consultant) SWIFT. Howard R. (Gr) Libbey-Owens-Ford Glass Co. 1701 E. 3road *ay, Toledo 5, Ohio SWIGART. Joseph J. (M) 3014 Middletown Rd.. Pittsburgh 4, Pa. (Vitro Rare Metais Co.) SWINDELL-DRESSLER CORP. (Philip Dressier) 3ox 1888 Pittsburgh 30. Pa. SWINEHART, David C. 808 E. 42nd. Apt. Di Seattle 5, Wash. SWINNERTO.V, . Bertram 3. (W) 157 Hampden Park. Tiffin, Ohio (American Radiator 3c Standard Sanitary Mfg. Corp.) SWINNERTON. George; R. (M) 35 E. State St.. Alliance. Ohio (Moore St Munger) SYLVANIA ELECTRIC PRODUCTS. INC (B. S. Ellefson) 1740 Broadway. New York 19, N. Y. SYLVESTER. George R. (MI) Sylvester Sc Co. 17706 Miles Ave.. Cleveland 28. Ohio SZCZEPANSKI. Daniel A. Box 757. Alfred. N. Y. SZYMASZEK. Jan Walter (R) 121 Muir Ave. Niagara Falls. Ont.. Canada (Metals Research Laboratories) T TABATA. Seiichi Sasaki. Glass Mfg. Co.. Ltd. t.l-Chome Yokokawa-Bashi Sumida-ku, Tokyo. Japan TAILBY, Roland V. (WI) Stylon Corp., Milford. Mass. i Vol. :5o. No. 10 (19561 TAJKOWSKI. Edward G. (Cl General Electric Co. Silicone Proeiocti Dep:. Waterford, N. Y. TAKAHASHI, Kakuicbiro (F) Nippon Glass Co., Ltd. 1, Ginza 7-chome, Chuo-Ku Tokyo, Japan TALLAN, Norman M. 95 E. I2:h Ave., Columbus. Ohio TALWALKAR. T. W. 3 Bagmati Rd.. Jamshedpur, India (Tata Iron 4 Steel Co., Ltd.) TANBERC, Ragnar Drammens Glassverk Drammen. Norway TAO. Yung (G) 301 S. Garneld St.. Burlington, Iowa (Sylvania Electric Products, Inc.) TARNACKI. Walter J. (WI) 8417-C Loch Raven Blvd. Towson 4, Md. (Friea 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 machi, Sakyoku Kyoto, Japan TATE* Frank E. (WI) 310 Tenth St.* Lincoln, 111. (Stetson China Co.) TATEM. William A. (RJ) 7 Willow Ln., Carle Place, N. Y. (U. S. Navy) TATNALL. R. Francis Box 327, Alfred, N. Y. TAUBER. Charles B. (B) 921 Signal Rd.. Signal Mountain, Tenn. (American Lava Corp.) TAUBER, John A. (RI) 3190 Maydower Rd. Plymouth Meeting, Pa. (E. J. Lavino & Co.) TAYLER. John 3. (Wl Louisville Fottery Co.. Inc. 223 E. Bloom. Louisville 3. Ky. TAYLOR. Fran (D) Gay Fad Studios. Lancaster, Ohio TAYLOR. Hiram D. fB) Shreve Manufacturing Co., Shreve. Ohio TAYLOR. Howard U. (WI) Globe-Union 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 4 Mfg. Co. Fluorochemicals Div. 900 Fauquier Ave.. St. Paul 6. Minn. TAYLOR. Robert B. (S) Structural Clay Products Research Foundation. Geneva. 111. TAYLOR. SMITH 4 TAYLOR CO. (Phil Wright) Chester. W. Va. TAYLOR. Thomas J. (R) 816 Sterner Mill Rd.* Trevose. Pa. (R. C. Remmey Son Co.) TAYLOR. William C. (GF) Coming Glass Works, Coming, N. Y. TEAGUE. A. D. (R) Babcock 4 Wilcox Co., Box 923 Augusta. Ga. TEAGUE BRICK & TILE CO. (L. K. 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 Wilrr.o: Rd.. Dce:ri;id. 111. (Thomas C. Thompson Co.j TEETOR, Paul (Sr) 72 E. Main St.. Somerville. N\ J. (Central Commercial Co.) TEFFT, Glenn C. (S; Claycraft Co.. Shawnee. Ohio TEFFT, PbiJiip W. (SFI) Claycrait Co., Box 366 Columbus 16, Ohio TEFFT. Willard K. (S) Claycraft Co.. Upper Sandusky, Ohio TEGELLABORATORI ET (Brick Laboratory), (Christer Enberg) Drottnicg Kristinas va^ 45 Stockholm O. Sweden TEICHMANN. Henry F. (G) Henry F. Teicbmann, Inc. Box 1705. Pittsburgh 30. Pa. TEICHMANN. Henry F,, Jr. (G) 645 Elderwood Dr., R. R. 2 Bridgeville. Pa. (Henry F. Tcichmann, Ir.c.) TEICHMANN. Newton N. (G) 316 Hardy Dr., Bridgeville, Pa. (Henrv F. Teichmann. Inc.) TENNERY. 2/Lt. Victor J. (3J) Signal Corps Eng. Labs. Chemical Physics Branch Ferroelectric* Unit Ft. Monmouth. N. J. TERMAN* Mark J. (R) Babcock 4 Wncox Co. 161 E. 42nd St.. New York 17. N. Y. TERRY, Grimn E. (E) 602 E. Willow, Wheaton, 111. (Hotpoint Co.) TERRY. Jack H. (E) 4321 Fairneld Ave., Fort Wayne, Ind. (General Electric Co.) TEXAS BRICK CO. (W. T. Gill. Jr.) Box S10, Brownwood. Texas TEXAS VITRIFIED PIPE CO. (Paul E. Hoey) Box 117 Minerai Weils, Texas THATCHER GLASS MFG. CO., INC. (Roy S. Armadale) 1901 Grand Central Ave., Elmira, N. Y. THEOBALD. Erwin r. (S) 1516--13th St., N. W.. Canton 3, Ohio (Metropolitan Brick. Inc.) THEWS. Karl 3. (M) 83*09 Taifcot Sc. Kew Gardens, L. I., N. V. (Titanium Alloy Mfg. Div., National Lead Co.) THIELKE. Norman R. (3) National Carbon Co., Research Labs. Box 6116. Cleveland 1. Ohio THIEMANN. John W. (WI) Alice Corp.. Box 119, Orrvtlle. Ohio THIEMECXE. Harry W. (WFI) Homer Laughlin China Co. Newell. W. Va. THIESS. L. E. (WF) 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, Ltd.. Firebrick Works) THOMAS. David W. (WI) Tycer Pottery. Inc. Armstrong St.. Roseville, Ohio THOMAS. Everett A. (R) 2703 SbaiTer Ave., Cincinnati 11, Ohio (Chas. Taylor Sons Co.) THOMAS. George L. (G) 11 Ideal Ave.. R.R. 1, Chcswick. Pa. (Pittsburgh Plate Glass Co.) THOMAS. H. H. (M) 35 Highboy Court, Red Bank. N. J. (Pemco Corp ) Roster 107 THOMAS. Rlchsru V. Ellendale Sd.. Chagrin rails. Ohio THOMAS. Robert K. i 3 i 258 Arlington Rd.. Newton rails. Ohio (Fails Welding 4 Co.) THOMASON', James F. (!) S62 Roosevelt Rd.. Kohler, Wise. THOMPSON, A. Paid < RF) Research Laboratories Eagle-Picher Co.. Joplin, Mo. THOMPSON, Charles W. (R) 216 Dell St.. Johnstown, Pa. (Bethlehem Steei Co.) THOMPSON, Clyde L. (RFI) 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, C. L. Borax 4 Chemicals. Ltd. 229 High Holborr. 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. 1 Lumnite Div. Universal Atlas Cement Co.) THOMPSON. Thomas E. (E) Boa 232. Williams 3ay, Wise. (Thomas C. Thompson Co.) THOMPSON. Lt. William M.. Jr. (3J1) WADC, Area 3. 3o.x 3303 Wright-Patterson ArB. Dayton. Ohio THOMSON. Homer G. (R) 12101 W. Howard St. Milwaukee la, Wise. (Allen Bradley Co.) THOMSON. James X. (W) 2 McMaster ?!.. 3am. N. Y. (Westinghouse Electric Corp.) THOR. Mumer E. (RI) 313 Parkhurst 3ivd.. Buffalo 23. N. Y. Norton Co.) THORNE. James E. (WJ) Case Manufacturing Corp. Robinson, Hi. THORNGATE. Bruce W. (W) Royal Tile Manufacturing Co. Sylvania Sta.. Box 7292 Fort Worth II, Texas THORNTON. George A. (M) Ottawa Silica Co.. 3ox 437 Ottawa. III. THORNTON. Paul E. (WI) 1708 La Tana Dr.. La Canada. Calif. I 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. 3. Old State Rd. Schenectady 6. N. Y. (General Electric Co.) THUNHORST. Helen M. 2313 Saratoga Ave.. Cleveland. Ohio THURNAUER. Hans (3FT) Minnesota Mining & Mfg. Co. Central Research. Inorganic Section Hudson Rd. St East Ave. St. Paul 6, Minn. THUT. Walter W. A. G. Huatixer 4 Cie. Lagerstrasse 1 Zurich. Switzerland Vol. 35, No. 10 (195G) T1BBALS. Harvey L. t.\ll; 542 Santa Barbara Rd. Berkeley 7, Calif. I Minneapolis-Honeywcll Regulator Co.) TICE. Henry B.. Jr. (W) Zenith Radio Corp. 1500 N. Kosrner Ave. Chicago 5 1. 111. TICKLE. William H. F. "Brown Stacks," Caidy Nr. West Kirby, Cheshire. England (Manchester College of Technology) TIDD, Elbert D. (W; Bell Telephone Labs, Inc., Rm. JB-266 Whippany, N. J, TIEDE, Ralph L. (G) Owens-Corning Fiberglas Corp. Case Ave., Newark. Ohio TIERNON. Carlos H. (MJ) Deister Concentrator Co. 901-935 Glasgow Ave. Fort Wayne. Ind. TIFTICKJIAN. John D. (W) Winbum Tile Mfg. Co. 1709 E. Ninth St., Little Rock, Ark. TILLOTSON, Clifford (R) Tillotson Refractories Co. Box 393, Corona, Calif. TILLOTSON, E. Ward (GF) 50S S. Murtland Ave., Pittsburgh 3. ?a. (Mellon Institute) TIMBERLAKE. John J. (G) Forter-1 eichmann Co. 1212 Clark Bldg., Pittsburgh 22, Pa. TINKER, Dean (M) Granville, Ohio (Ohio Kilns. Inc.) TINKLEPAUGH. J. R. (RI) State University of New York College of Ceramics at Alfred Univ. Alfred. N. Y. TITANIUM ALLOY MFG. DIV., NATIONAL LEAD CO. (W. J. Baldwin) 3ox C. Bridge Station Niagara Falls. N. Y. TITUS, Henry 3. (R) North American Refractories Co, 50 Church St.. New York 7, N. Y. T03ERG. 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.) TOEPFER. George (W) Canadian Potteries Ltd. 360 3lvd. Seminaire St. Johns. Que.. Canada TOLER. Herbert R. (E) R. R. 2, Box 544, West Chicago, III. (Indiana Steei Prod. Co.) TOLLY. Donald 3. (EJ) 122 Hudson Ln.. Fern Creek. Ky. (GeneraJ Electric Co.) TOM. Elgin M. (G) 4208 Marlaine 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. (Shesaago China, Inc.) TOOL. Arthur Q. (GF) 7325 Carroll Ave. Takoma Park 12. Md. TOOLEY. F. V. (Gr) dll W. Oregon, Urbana, III. (University of Illinois) TOOMEY. James E. (R) Kaiser Aluminum & Chemical Corp. 1625 Eye St.. N. W., Room 915 Washington 6, D. C. TOPPING, Jvr.n (PI United Stares Steei Corp. 525 William Penn ?1. Pittsburgh J9. ?s. TORGAL. X. G. 1/103, Mannarputam Tiruchirapaiii. S. India (Jamai Mchamed College) TORNO. Ralph F. (E) 4 10 Front St., Berra, Ohio (McGear. Chemical Co.) TOROK. Julius J. (G) 5344 Gallatin Rd., Toledo 6, Ohio I Owens-Illinois) TOSTEVIN. Edgar R,, Jr. (WI) 2044 Westfield Terr.. Bethlehem, Pa. (Western Electric Co.) TOULOUSE. Juliao K. (Gr I) 1817 Potomac Dr.. Toledo 7, Ohio (Owens-Illinois) TOWNSEND. William O. (WI) 2763 Nottingham Rd. Columbus 21. Ohio (Battelle Memorial Institute) TRABERT. Loren A. (WI) 610 Maple St.. Red Wing. Minn. (Red Wing Potteries, Inc.) TRAVIS. Betty A. (D) 124 W. 13th St.. New York 11. N. Y. TREDENNICX. William T. (RI) 514 Brookfield Rd. Drexel Hill. Pa. (Refractory Specialties Co.) TRErFNER. Walter S. (R) 440 W. Mapie Rd. Lintbicum Heights. Md. (General Refractories Co.) TREISCHEL, C. C. (WFI) R. T. Vanderbilt Co.. 230 Park Ave. New York 17. N. Y. TRE1TLER. Theodore L. (G) Coming Glass Works, Coming. N. Y. TRENTON POTTERIES CO. Plants 1 4 2. 3C9 N. Clinton Ave. Box 141, Trenton. N. J. TREPTOW. Amoid W. (E) Bell Telephone Labs. Murray Hill. N. J. TREVOR. John F. Moira Rd.. Woodvilie Nr. Burton-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, B. W. I. TRINKLEIN. Robert L. (W) 1551 Jackson Hwy.. Florence, Ala. (Stylon Southern Corp.) TRIPP. Harlan P. (El) 3605 Winchester Rd.. Louisville 7, Ky. (General Electric Co.) TROMPETER. Bernard J. (M) Champion Spark Plug Co. 8525 3utler Ave- Detroit II, Mich. TROST, Frank W. (R) Chas. Taylor Sons Co. 5 Haddon Ave- Haddonneld. N. J. TROSTEL. L. J. (RFI) General Refractories Co- Box 1673 Baltimore 3. Md. TROSTEL. Louis J.. Jr. (RI) Norton Co.. 1 New Bond St. Worcester 6. Mass. TROY. H. Neal (RI) Owens-Illinois 1700 N. Westwood Ave., Toledo 7, Ohio TROY. Walter J. (E) 888 Chili Ae.. Rochester, N. Y. (Pfaudler Co.) TRUESDALE. Richard S. (I) Box 275. Alfred. N. Y. TRUMPLER. Alfred L. (M) Harper Electric Furnace Corp. 39 River St., Buffalo 2, N. Y. Roster 109 TSE. Shou-cheng (WI; 133 Main S:.. Apt. 3-3 Fairhaven. Mass. A.erovox Carp.) TSUKADA. Kcnichi Box 257, Alfred. N. Y. TUCKER. Donald J. (Ml) 3114 Wimarop Rd. Huntingdon Valley, Pa. ' (Precision Grinding Wheel Co.) TUCKER. Edward F. ;R) StebLins Engineering 4 Mfg. Co. J6J Eastern Blvd., Watertown. N. V. TUCKER. Harvey C. (WI) Ferro Corp., 4150 E. 56th St. Cleveland 5. Ohio TUCKER. Roland E, (WI) Trenton Potteries Co. 309 N. Clinton Ave., Trenton, N. J. TUNG, Chi Fang (E) 1958 Xokomis Ave., St. Paul 6, Minn. i Minnesota Mining 4 Mfg. Co.) TURSETT. Paul E. (MI) R. R. 1, Dresden Hwy., Paris. Tenn. (H. C, Spinks Clay Co., Inc.) TURCX. Raymond L. (M) 48 Short St.. Tiffin. Ohio i Sterling Grinding Wheel Co.) TURISSINI. Robert (GJ) Coming Glass Works, Fallbrook Plant Coming. N. Y. TURK. Richard H. (EFI) Peraco Corp., 5601 Eastern Ave. Baltimore 24. Md. TURLEY. Charles L. (G) 3. F. Drakerrield Sc Co., Inc. 3ox 519. Washington, Pa. TU3N3AUGH. Jerry E. 5J10 >Jrd Ave. S.. Seattle 8, Wash. TURNBULL, Edward D. (W) 500 Penn Ave.. Scranton 3. Pa. (Eujron Lead Co., Div. Glidden Co.) TURNBULL. John C. (G) Radio Corp. of America RCA-Vietor Div., Lancaster, Pa. TURNER, A. A. (R) :jj Ijke Ave.. Metuchen. N. J. .'Carborundum Co.) TURNER. Donaid Messrs. Lod^e Plufs, LaL Ruffby, England TURNER. Mor: D. IB) Caile 12 de Octubre -*14 Hato Rey, Puerto Rico TURNER. ?. ?.. Jr. (RI> 46 Imbler Dr.. Cincinnati 18, Ohio 1 General Electric Co.) TURNER. Robert C. (SI) One Jerferson Ave. Rockville Centre. N. Y. i Structural Clay Products Institute) TURNER. W. E. S. (Honorary) 30 Whitworth Rd.. Ranmoor Sheffield 10, England TUTTLE. George N. (E) Benjamin Electric Mfg. Co. Seegers Rd. Sc N. W. Highway Des Plaines. 111. TUTTLE. Milton A. (R) Box 981. Alfred. N. Y. i State University of New York. College of Ceramics) TWELLS. Robert (WFI) Electric Auto-Lite Co., Spark Plug Div., Boa 231 Fostoria. Ohio TWELLS, Robert G. (GI) 528 Isabella Ave., Lock 4, Pa. (Coming Glass Works) TWYFORDS. LTD. CliJfe Vaie potteries Stoke-on-Trent. England TYGART VALLEY GLASS CO. (E. A. Hinlrins) Boa 503 Washington. Pa. TYLEH. W. S, CO. (C. E. Jenks) 3615 Superior Ave., N. E. Cleveland 14. Ohio VOL. 55, No. 10 (1956) TYRRELL. Miles E. (R; Box *12, Norris, Tens. (U. S. Bureau of Mires) TYSINGER. Ted W. i.S; R. R. 2, Thomasviile. N- C. (Cunningham Brick Co.) U UELTZ. H. F. G. i 3> 39 Wear S:., Worcester. Mass. (Norton Co.) UHRMAXN. Carl J. (GFj Overlook C:., Beilaire. Ohio (Arthur W. Schmid Co., Inc.) L'LEMAN. Turrell (G) 109 Virginia Ave., Aspinwall, Pa. (Pittsburgh Plate Glass Co.) ULRICH, Robert J. (E) American Radiator 5c Standard Sanitary Corp. 1541 S. Seventh St.. Louisville 3. Ky. UNION FRANCAISE DES PRODUITS REFRACTAIRES (Louise Haim) 15. Rue de Milan, Paris 9e. France UNITED CLAY MINES CORP. (K. E. Ward) 101 Oakland Sc. Trenton 6, N. J. UNITED STATES GYPSUM CO. (Robert Hamilton) JOO W. Adams St. Chicago 6, III. UNITED STATES STEEL CORP. (W. S. Debenham) 525 William Penn Pi. Pittsburgh 30. Pa. UNIVERSAL CLAY PRODUCTS CO. (C. A. Bloor) Sandusky, Ohio UNIVERSAL DENTAL CO. (Joseph Konnl 43th it Brown Sts. Philadelphia 39. Pa. UNIVERSAL POTTERIES. INC. (Harrv E. Davis) Cambridge. Ohio UNIVERSAL-RUNDLE CORP. (A. L. Johnson) V/. Keith McAfee Lab. Box 1268. Mahor.ingtown. Pa. UNIVERSAL-RUNDLS CORP. (H. P. Wangeiin) 3305 W. Forest Home Ave. Milwaukee 15, Wise. UNUM. Robert F. (WI) 311 Wilmington Ave.. New Castle, Pa. (Universal-Rundle Corp ) URBAN. Stephen F. (3) 263 Hartford Ave.. Kenrrore 23, N. Y. (Titanium Alloy Div., National Lead Co.) UTAH FIRE CLAY CO. (C. n. Myers) Box 127. Sait Lake City 10. Utah UTZ. Donald (R) Kearfott Co.. Inc. 142 Getty Ave.. Clifton. X. J. V VAIL. Milford R. 4014 Spruce St.. Philadelphia 4. Pa. VALDES. Thomas H. fW) 431 Adeline St. Trenton. N. J. (Trenton Potteries Co.) VALENTINE FIRE BRICK CO. DIV. A. P. GREEN FIRE BRICK CO. (W. H. Peterson. Jr.) Woodbridge. N. J. VALENTINE. Peter Cooney fM) Del Monte Properties Co. 620 Market St.. San Francisco 4, Calif. VALYI, IIsa.be 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 ALSTSN, Roy L. (RD 9168 Sarasota. Detroit 39. Mich. (Ford Motor Co.) VA.NCE. Clarence E. 165 Miiky Way, Clemson, S. C. VAX CLEAVE. A. A. (R) 3100 McGroarty St.. Sunhr.d, Calif. VAN COTT. Harrison C. (B) R.R. 1, Horscheads, N. Y. (Coming Glass Works) VAN" DER BECK, Roiand (BIj Research 4 Development Carborundum Co.. Niagara Fails. N. Y. Vanderbilt, r. t,, co. (Ira E. Sproat,' 230 Park Ave. New York 17, N. Y. VAN DERM ADE. Richard J. (R) 489 Willow Dr.. Pittsburgh 16. ?a. (Carborundum Co.) VAN DRJ2SER. 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. X. V. Ramie Union. Enschede. Holland VAN* GORDON. Donald V. (M) Metai 4 Thermit Corp. Box 471, Rahwav, N. J. VAN HORN. Harry T. (M) 741 Floral Park Rd. Franklin Square, N. Y. (Socony Mobil Oil Co., Inc.) VAN HOUTEN, Louis A. Fabrication Des Abrasivos S. A. Ave. Julio A. Roca 610 Buenos Aires, Argentina VANICK, James S. (M) International Nickel Co., Inc. 67 Wall St.. New York 5. N. Y. VANN!, Ralph J. 1713 Warren Ave., Seattle 9, Wash. van N1EUWENBURG. C. J. Laborscorium voor AnaJyrische Scheikunde (Microanaiyse) de Vries van Heystplein 2 Delft. Netherlands VAN SCKOICK. Emiiy C. iXF) State University of New York College of Ceramics, at Alfred Uaiv. Alfred. N. Y. VAN SCHOIK. Dickson M. (RI) 5950 S. Lake Shore Dr.. R. R. 2 Box 109. Whitehall. Mich. (Misco Precision Casting Co.! VAN TASSEL. R. H. (Ej 527 Green Tree Rd.. Kohler, Wise. (Kohler Co.) VAN VLACK. Lawrence H. (BI) Dept, of Chem. 4 Metal. Engineering University of Michigan Ann Arbor. Mich. van WASSENHOVE. Pierre N- V. "De Sohinx" Maastricht. Holland VAN WIGGEREN. Charles G. (WI) Simonds Abrasive Co. Tacony 4 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. Morada bad. U. P. India VASILOS. Thomas (3) 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 (XFt) Cherokee Brick 4 Tile Co.. Box 58 Waterville Rd.. Macon, Ga. VEALE, Jack H. (R) a06 Reedwood Dr., Joliet. 111. (Illinois Clay Products Co.) VEIGA. Roberto A. Ceramics Santa Helena Ltda. Rua 15 De Novembro 38 Paranagua, Parana. Brazil Roster 111 VENABLE. Charies R.. Jr. (RI) 1660 S- Oak. Bartlesville. Okia. (Phillips Petroleum Co.) VENABLE. Joe G. (G) Chattanooga Glass Co. Chattanooga 10. Tenn. VER3A. Richard J. ( M) Schweitzer Equipment Co. .376-* Ridge Rtl.. Cleveland 9, Ohio .VESUVIUS CRUCIBLE CO. t. Francis L. Arensberg) Box 3275 Swissvaie. Pittsburgh 13. Pa. VICKERS. A. Eric J. "Wynnstay", Millneld Rd. Whickham Newcastle-upon-Tync, England (Thermal Syndicate Ltd.) VICTOR INSULATORS DIV.. I-T-E CIRCUIT BREAKER CO. (H. Failmezgerj Maple Ave. Victor. N. Y. VIDANOFF, Richard ;B. (CJ) 902 Seventh Ave., Ford City, Pa. (General Electric Co.) VIDPLAN S. A. (Daniel Ferres) Real No. 4415. Montevideo. Uruguay VIDRIERA MONTERREY, S. A. (Alfonso F. Rodriguer) Aparado 162, Monterrey N. L., Mexico VIGER, Burnett C. (G) 1J0 E. Third St., Coming, N. Y. (Coming Glass Works) VILENSKY. Michel 3. (R) 1515 27th Ave., San Francisco 22, Calif. (Ampex Corp.) VIXAL, Francis E. (B) Radio Corp. of America 64 "A'* St.. Needham Heights 94. Mass. VINCENT CLAY PRODUCTS CO. (O. J. Wbittemore) 615-19 State Bank Bldg. Fort Dodge. Iowa VINCENT. George L. (WI) R. R. 2. Box 79, Robinson, III. Case Manufacturing Corp.) VINTHER, E. Hcikel Porceiainfabriken Norden Valby Langgade 95 Copenhagen. Denmark VISCONTI dt MODRONE. Raimondo Soc. Ceramica Richard Ginori ! via Bigii. Milan. Italy VITCLO. Sylvester A. (Ri) Gen. Del.. Long Valley. N. J. (Austenal. Inc.) VITREOUS STEEL PRODUCTS CO. (Edgar H. Weil) Box J991 Cleveland 20. Ohio VITRO MANUFACTURING CO. (Joseph 3oyce) 60 Greenway Dr. Pittsburgh 4, pa. VODICXA. Albert L. (E) Aetna Porcelain Enameling Co. 4701 Augusta Blvd.. Chicago 51, III. VOGEL. Ralph B. (M) National Lime & Stone Co., Carey, Ohio VON TURY. Francis J. (DF) Lehigh Ave.. Perth Amboy, N. J. (Vontury, Inc.) VOORHIES. John H. (W) 243 Arrow Hwy., Claremont. Calif. (Pacific Tile Sc Porcelain Co.) VOSE. Wilfred Winstones* Roofing Tile Works Ltd. Box 2, Plimmerton. New Zealand VOSS. Raymond O. (G) 26 Pershing St., Coming. N. Y. (Coming Glass Works) VOSS. Wendell G. (E) 27314 Rexford Rd.. Bay Village, Ohio (Ferro Corp.) VRETOS. Epaminondas Institute of Chemistry & Agriculture "N. CaneiiopoulQs" of the Hellenic Co. Piraeus. Drapetsona. Greece VUKOVICH. Milan. Jr. (MI) 9 Dix Rd.. Woburn. Mass. (Godfrey L. Cabot. Inc.) Vol. .15, No. 10 (1956) w WACHTMAN. John 3.. Jr. (B) National Bureau of Standards. Div. 9.1 Conn. Ave. 4 Van Ness St., N. W. Washington 25. D. C. WAGGONER. Jack H. (GF) 240 Quer.tin Rd.. N., Newark, Ohio (Fiber Glass Div., Pittsburgh Plate Glass Co.) WAGNER. 3ruce r. (W) 1S6 N. Vernon Ave.. Pasadena 3, Calif. (3. r. Wagner Sc Co.) WAGNER. Harold C. (R) 968 Yellowstone Rd. Cleveland Heights 21, Ohio (Zirconium Corp. of America) WAGNER. Rio 3. (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 Fabriker `Gustavsberg, Sweden WAINER. Eugene iW) Horizons. Inc.I 2905 E. 79th Sc. Cleveland 4, Ohio WAITE. Virgil H. (E) 433 Beech Se., Berea. Ohio (McGcan Chemical Co.) WAIVER, Geden J. (W) 909 87th St., North Bergen. N. J. (B. G. Corp.) WAKEFIELD, 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 C2425 Second Ave.. W. Seattle 99, Wash. WALDEN. Albert 5. (R) National Carbon Co.. Cleveland. Ohio WALDHAUER. William O. Savannah Terrace Apts., Apt. 25-C North Augusta. S. C. WALKER, Eugene E. (W) 220 W. Sheridan Ave., New Castle, Pa. (Universal-RoodJe Corp.) WALKER. Henry . (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 PI.. 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. (Winbum 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 E. (G) Consolidated Feldspar Dept., International Minerals St 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 O.. Jr. (E) 330-* Fairway Rd., N. E. Atlanta 19, Ga. (Engineering Experiment Station Georgia Institute of Technology) WALWORTH. Chester A. (G) Libbey-Owess-Ford Glass Co. 3ox 4273, Charleston 4, W. Va. WAMBOLD. Jack i3) Kennamctal. ir.c. Llovd Ave.. Latrobe. ?a. WAMPLER. Roy W. (C) Libbey-0wens*Ford Glass Co. Technical 3ldg., 1701 E. Broadway Toledo 5, Ohio WANG, Chan-huan Tektronix, Inc. Box 331. Portland 7. Ore. WANG, Franklin F. Y. Glascore Products. Inc. 20900 St. Clair. Cleveland 17, Ohio WAXGELIN, K. P- (El Universal-Bundle Corp. 3305 W. Forest Home Ave. Milwaukee 15, Wise. WARD. George V. (R) McLain Fire Brick Co.. Div. of H. K. Porter Co.. Inc. Wellsviile. Ohio WARD, George W. (G) Gustin-Bacon Mfg. Co. 210 W. Tenth St., Kansas City, Mo. WARD. John B. (X) Coming Glass Works, Corning, N. Y. WARD. John F. (W) 551 Chester PL, University Heights New Brunswick. N. J. (Rutgers University) WARD. K. E. (M) United Clay Mines Corp. 101 Oakland St.. Trenton 6. N. J. WARD, Mrs. S. Paul (M) 601 Mission St., South Pasadena, Calif. (S. Paul Ward, Inc.) WARD. Thomas J. Box 3. Ogaensburg, N. Y. WARDE. John M. (R) Union Carbide Ore Co. Carbide Sc Carbon Bldg. 30 E. 42nd St.. New York 17, X. Y. WARE. Robert K. N07-3 Bracxenridge Apt. Lake Austin Blvd.. Austin 3. Texas WARFIELD, 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 (El) 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.. Jenkintown. Pa. (Frank Samuel Sc Co.. Inc.) WASHABAUGH. Grover C., Jr. (M) New Castle Refractories Co. New Castle. Pa. WASHINGTON BRICK CO. Muirkirk. Md. WASHINGTON BRICK & LIME CO. (Waiter Senters) Box 2198 Spokane. Wash. WASHINGTON PORCELAIN CO. (E. R. Miller) Willow St. Washington. N. J. WASMANX, Russell K. (R) Gladding, McBean 8c Co. 1275 Harrison, San Francisco, Calif. Roster 113 WATERS. Martin R. (Wlj 22 Red Rose Way, Leviitown. Ta. [ Wenczei Tiie Co.) U'ATKIN, Robert W. (W) 2507 St. Clair Ave. East Livervool. Ohio (Edwin M. Knowles China Co.) WATKINS, E. Charles (WJI) Chape! Rd.. R.R. 3. Zanesville. Ohio (Mosaic Tiie Co.) WATKINS, George 3. (G) Libbey-Owens-Fora Glass Co. 1701 . 3roadway. Toledo 5, Ohio WATKINS. Ray T. (S) U. S. Tariff Commission. Ceramic Div. Eighth < E Sts.. N'. W. Washington 25. D. C. WATKINS. Ens. Robert V. (I) BOQ 67A Room 275 NAS Pen>acola. Fla. WATKINS. William E.; (ML) 6J6J Alderwood Rd.. Cleveland JO, Ohio ( Ferro Corp.) WATKINS. W. J. (M) Kentucky Clay Mining Co. Mayfield, Ky. WATSON. George F. (R) American Brake Shoe Co. Metallurgical Lab., Mahwah. N. J. WATSON. James F. Tabor. Iowa WATT. Charles 1527 Piikoi St.. Honolulu. Hawaii WATT. Loren (W) Watt Pottery Co. Crooksvtile. Ohio WATT POTTERY CO. (Loren Watt) Crooksville, Ohio WATTS. Arthur P. (R) A C Spark Plug Div., General Motors Corp., Dept. 3103 Flint, Mich. WATTS, Arthur S. (Honoraipr, WFI) Lcrd Hall. Ohio State University Columbus 10. Ohio WAUFLE. Harold E. Gen. Del.. Alfred, N. Y. WAUGH. J. Stanley Mass. Inst, of Tech.. Bldg. 20 Rm. 20-C-001, Cambridge 39, Mass. WAXLER, Roy M. (G) 1 National Bureau of Standards Conn. Ave. Van Ness St., N. W. Washington 2$. D. C. WEATON. Ralph L. (G) St. Joseph Lead Co. Zinc Smelting Div., Monaca, Pa. WEAVER. Don S. Box 787, Alfred. N. Y. WEAVER, F. L. (R) Weaver Materiel Service, Gokey Bldg. Jamestown, N. Y. WEAVER. .Harold L. (G) 303 Chestnut St.. Port Allegany, Pa. (Pittsburgh Corning Corp.) WEAVER. R. A. (EF) Ferro Corp., 4150 E. 56th St. Cleveland 5. Ohio WEBBER. John J. (R) 1210 Elco Dr.. Maumee, Ohio (Harbison-Waiker Refractories Co.) WEB BERT. James C. 1351 E. 17th S.. Salt Lake City, Utah WEBER. Arthur W. (G) Corning Glass Works Corning, N. Y. WEBER. Berthold C. (B) 3833 Saranac Dr.. Dayton 9, Ohio (Aeronautical Research Laboratory) WEBER, Don A. (S) Detster Concentrator Co. 901 Glasgow Ave., Fort Wayne, Ind. WEBER. 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) WE3STER. Charles E. I SI) 311 E. Beaver St.. Zeiienople. Pa. (Lava-Crucible-Retractories Co.) WE3STER. David (S) Polychemicais Div. West Virginia Pulp & Paper Co. Box 3J2. Charleston. S. C. WEDDELL. George G. (Mi 125 Beverly Rd.. Pittsburgh 16. Pa. i Westingnouse Atomic Power Div.) WEEDY. Robert C. (R) Harbison-Waiker Refractories Co. Box 957, Windham, Ohio WEEKS. Ben W. (M) Allied Trading Corp. 807 Commercial Bldg., Raleigh. N. C. WEHTJE, Ernst J. Box 269, Malmo 1, Sweden (AB Ifoverken Skanska Cement) WEHTJE. Karl Fredrik A/B Rorstrands Porslinsfabriker Lidkoping, Sweden WEIDEL. Robert A. (G) 497 Apple Orchard Lane Webster, N. Y. (Bausch. Lorab Optical Co.) WEIDENBAUM. Sherman S. (C) 59 W. Second St., Corning, N. Y. (Coming Glass Works) WEIDLICH, Gilbert (M) 640 E. Jefferson, Kirkwood. Mo. (Western Machinery Engine Co.) WEIDMAN, V. Wesley (R) 201 Duncan Ave., Wilmington 3, Del. (E. I. du Pont de Nemours 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 WEINSTEIN, Alex (G) Ednaiite Optical Co.. Inc. 200 N. Water St.. Peekskill. N. Y. WEINTRITT, Donald J. (M) 5122 Pine St., Beilaire. Texas (Baroid Div., National Lead Co.) WEISE, Robert L. (G) 446 E. Second St.. Logan. Ohio (General Electric Co.) WEISENSEEL. Charles W. Jackson Tiie Mfg. Co. 3ox 2C06. Jackson. Miss. WEISS. E. Joseph (BI) Dept, of Ceramic Engineering University of Texas. Austin, Texas WEISS. W. Russell (R) Weilsville. Mo. (Wellsville Fire Brick Co.) WEISZ, Robert S. (3) International Telemeter Corp. 2245 Pontius Ave. Los Angeies 64, Calif. WELCH. A. Philip (BI) 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 Son) WELCH, Richard L. (R) Dominion Firebrick Clay Products (1954) Ltd. Claybank, Sask., Canada WELLER. Harrey C. (G) Surface Combustion Corp. 2375 Dorr St.. Toledo 1, Ohio WELLING. Charles E. (R) Ford Motor Co., Scientific Lab. Engr. Staff. Box 2053, M B Station Dearborn, Mich. WELLS. A. A (WF) Homer Laughlin China Co. Neweil, W. Va. WELLS. J. M. (W) Homer Laughlin China Co. Neweil. W. Va. WELLS. Ralph G. 3) University of Michigan E. Engineering 31cg., Rm. 4201 Ann Arbor. Mich. WELSHANS. 1. T. (R> Diamond Alkali Co., Cc::ien:-Coke Div. 300 Union Commerce Bldg. Cleveland M. Ohio WELTE. Raiph J. (S) Summit Pressed Brick Tile Co. Box 533, Pueblo. Colo. WELTERLEN, James D. (RJ) 4630 Zane St.. Los Angeles 32. Calif. (Gladding. Mc3ean Co.) WENCZEL. C. (W) Wencie: Tile Co.. Box 908 Trenton. N. J. WENCZEL TILE CO. (C. Wenczei 1 Box 903. Trer.ton, N. J. WENDT. Nelson E. (M) American Potash Chemical Corp. 595 Foch Blvd., Williston Park. N. Y. WENGER. James A. L. Messrs. Wengers Ltd., Etruria Stoke-on-Trent. Stafford, England WENNING. W. F. (E) Ceramic Color Chemical Mfg. Co. Box 297. New Brighton, Pa. WENTZ. B. B. (S) Belden Brick Co. 700 W. Tuscarawas St.. Canton 1, Ohio WERKEMA. Thomas E. (S) Dow Chemical Co.. Midland. Mich. WERNER. Alan J. (G) 159 Watauga Ave., Corning, N. Y. (Corning Glass Works) WEST, Frank Hailemere Greenlane Buxton, Derby. England (Derbyshire Silica Fire Brick Co.) WEST. Howard F. (R) Illinois Clay Products Co. 68 N. Chicago S:.. Joliet. 111. WEST. Richard R. ( 3) Box 49J, Alfred. N. Y. (State University of New York. College of Ceramics) WESTBROOK. J. H. (B) General Electric Co,. Rm. 3124 Research Laboratory, The Knoils Schenectady, N. Y. WESTERN BRICK CO. (I. R. Cline) Danville. 111. WESTERN ELECTRIC CO- INC. (J. W. Scott) 7650 Hawthorne Station Chicago 23. 111. WESTERN ELECTRIC CO., INC. (W. J. Scott) 2525 Shadelaod Ave. Indianapoiis 6. Ind. WESTERN FELDSPAR MILLING CO. (V. E. Magnuson) Box 671 Salida. Colo. WESTINGHOUSE ELECTRIC CORP. (John D. Hamish, Jr.) Derry, Pa. WESTLAKE. C. Rogers (WI) 1961 Christmas Run Blvd. Wooster, Ohio (Shreve Manufacturing Co.) WESTMAN, A. E. R. (GF) Dept, of Chemistry Ontario Research Foundation 43 Queen's Park Crescent Toronto S. Ont.. Canada WESTMONT, O. B. (R) Jobna-Manville Products Corp. Lompoc. Calif. WESTON. Ralph H. (SI) Arketex Ceramic Corp.. Brazil, Ind. WEST VIRGINIA BRICK CO. (Claude F. Wiseman) Box 1071 Charleston. W. Va. Roster 115 V.EYL, Woldcmar A. (,GF) Div. oi Mineral Technology Pennsylvania 5:ace University University Park. Pa. WHALEN. Thomas J. Hilltop Park. Box 5. State College. Pa. '.VHALLOX. William P., Jr. (M) Giobar Div.. Carborundum Co. 3702 W. Beveriv Dr., Dallas, Texas WHEELER, D. D. (W) Titanium Alloy Mfg. Div. NationaJ. Lead Co. Ill Broadway, New York 6, N. Y. WHEELER. William H. (RI) Martin Aircraft Co., Engr. Lab. Martin Mail 366. Baltimore 3. Mil. WHEELING STEEL CORP. (Ernest 3. Snyder) Steubenville South Plant Steubenville, Ohio WHELAN. Paul T. (R) 1 I Florence Terr., Watertown 72. Mass. I Watertown Aresenal) WHERRY, Allen P. (El) 9652 Oakdale Rd., Parma 29, Ohio ( Hunter-Thomas Assoc.) WHITACRE. D. D. (R) Whitacre-Creer Fireproofing Co. Wayr.esburg, Ohio WHITACSE-GRSE3 FIREPROOFING CO. (D. D. Whitacre) Waynesburg, Ohio WHITACRE. Maxwell L. (M) Carborundum Co., Buffalo Ave. Niagara Falls, N. Y. WHITAKER, Fred A. (WI) 451 Oak Ridge Rd., Clark. N. J. (General Ceramics Corp.) WHITAKER, H. Rustless Iron Co. Ltd.. Lawkholtne Ln. Keighley. Yorks, England WHITAKER. L. R. (SFI) Carolina Ceramics. Inc., R. R. 3 Columbia. S. C. WHITE. Frank L. (G) 1214? Manor. Detroit 4, Mich, i Ford Motor Co.) WHITE. George D. (B) 225 E. Drive. Oakridge, Tenn. (Carbide 4 Carbon Chemical Co.) WHITE. Haroid E. (RFI) R. R. 6. "Windy Knoll," Butler. Pa. Lava Crucible-Refractories Co.i WHITE. J. F. (B) 2016 Arrowood Dr.. Cincinnati 31. Ohio (General Electric Co.) WHITE. Jonathan S. (W) 1302 Singer PI. '.Vilkinsburg. Pittsburgh 21, Pa. (StupakofF Div.. Carborundum Co.) WHITE. O'Mara (G) 642 Fairmont-Ave.. Westfield. N. J. (Carborundum Co.) WHITEHEAD. Leland E. Box 6122. Virginia Tech. Sta. Blacksburg. Va. WHITEHEAD. Merlin H. (E) Columbian Enameling 4 Stamping Co. Terre Haute. Ind. WHITESELL, Lysie E. (R) Wellsville. Mo. (Wellsviile Fire Brick Co.) WHITFIELD. Robert E. (R) Chas. Taylor Sons Co.. Box 58 Annex Station. Cincinnati 14, Ohio WHITFORD. Robert. F. (R) North American Refractories Co. Ashland. Kv. WHITFORD. William G. (DF) Box 38. Olympia Fields. III. (University of Chicago) WHITNEY. Earl J. 39 W. Fifth St.. Coming. N. Y. WHITNEY. Eugene H. (R) Gladding, Me Bean 4 Co.. Box 3152 Seattle 14. Wash. WHITNEY. John B. (E) 317 N. Bonner Ave.. St. Matthews. Kv. (General Electric Co.) Vol. 3.5. No. 10 (1956) WHITSON. Ralph E. (W) Aluminum Co. of America Box 300, Bauxite. Ark. WHITSON. Richard E.. Jr. (G) Dominion Minerals, Pinev River. Va. WHITTAKER. Clyde M. (\V) Box 960, New Castle. Pa. (Universai-Rundle Corp.) WHITTAKER. G. Ward (W) Union Meettng Rd., Gen. Del. Bluebell, Montgomery County, i'a. (L'niversai-Rundle Corp.) WHITTEMORE. J. W. (SFI) Virginia Polytechnic Institute Blacksburg, Virginia WHITTEMORE. O. J. (S) Vincent Clay Produets Co. 615-19 State 3ank Bldg. Fort Dodge, Iowa WHITTEMORE. O. J.. Jr. (RI) 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, Ariz. (U. S. Army) WIKER. Richard M. (G) 206 Rand Ave.. Painted Post, N. Y. (Coming Glass Works) WILANSKY. Harold (G) 67 Sterling St., Coming. N. Y. (Coming Glass Works) WILCOX. Herman G. (R) 800 Ross Ave.. Pittsburgh 21. Pa. (Harbison-Walker Refractories Co.) WILCOX. James W. (S) Alliance Cay Product Co. Alliance. Ohio WILCOX, Paul D. 59 S. Grant St.. Midvale, Utah WILDER. David R. 1212 S. Third St.. Ames. Iowa WILKE, William ?.. HI (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. 1.3. 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 4 Wall Tile. Ltd.) WILLARD. Henry G. (MJ) General Electric Co. Plainvtlle. 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 4 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) WILLIAMS. Clyde (RF) 3at:e!!e Memorial Institute SOS King Ave.. Columbus 1. Ohio WILLIAMS, George F. (Gl Owens-Illinois. Technical Center 1700 N. Westwood Ave.. Toledo 1, Ohio WILLIAMS. Gordon R. (W) Box 136. Florence, Ala. (Stylon Southern Corp.) WILLIAMS. Harry M. (WI) Insulator Dept.. General Electric Co. Charics 4 Crornwcil Sts.. Baltimore. Md. WILLIAMS. John A. (W) Box 250. Trenton 2, N. J. (Mitchell-Bisscil Co.) WILLIAMS, John C. (W) Mt. Vernon Way. Whippany, N. J. (Beil Telephone Labs.) WILLIAMS. Leroy L.. Jr. (El) 3006 Adams Ave.. Evansville. Ind. (Whiripool-Seeger Corp.) WILLIAMS. Lloyd D. (G) Coming Glass Works, Fallbrook Plant Coming. N. Y. WILLIAMS. Robert A.. Jr. (W) American Encaustic Tiling Co.. Inc. 1000 N. Cannon Ave.. Lansdale. Pa. WILLIAMS, Robert B. (W) 1107 Westwood Ave. Chattanooga, Tenn. (Ameriean Lava Corp.) WILLIAMS. Robert E. 1800 Crasbv Rd., Carrollton, Texas WILLIAMS. Robert M. (RI) 5809 Royal Oak Ave., Baltimore, Md. (General Refractories Co.) WILLIAMS. Walter E. (MI) New Castle Refractories Co. New Castle. Pa. WILLIS. James 3. (E) 1355 Crofton Rd.. Baltimore 12, Md. (Pemeo Corp.) WILLMORE. Tracy A. (R) 1118 W. Illinois St., Urbana. 111. (University of Illinois) WILLS. Robert E. (R) Box 220. Coal City, Illinois (Illinois Cay Products) WILLSON PRODUCTS. INC (Thomas A. Willson) 3ox 622 Reading. ?a. WILLSON. Thomas A. (G) Willson Products. Inc.. Box 622 Reading, Pa. WILSON", Bonum S., Jr. Box 1105. Cemson. 5. C. WILSON. Calvin S. (G) Libbey Glass Div., Owens-Illinios Ash St. & Wheeling R.R. Toiedo 1. Ohio WILSON. Charles L. (S) 217 N. Meridian St.. Brazil, Ind. (American Vitrified Products Co.) WILSON. George (R) 131 Edison Ave., New Castle, Pa. (New Castle Refractories Co.) WILSON. Homer W. (S) Delaware Cay Co. Box 352. Delaware. Ohio WILSON. Hugh H.. Jr. (BI) Cemson College. Otin Hall Cemson. S. C. WILSON. Maurice S. (R) Reynolds Dr., R. R. 2, Box 261 Wallingford. Conn. (American Refractories 4 Crucible Corp.) WILSON. Robert Charles (WI) 791 Wedgewood Dr.. Apt. 3 Columbus 4. Ohio (Ohio State University Engineering Experiment Station) WILSON. Robert F. (G) Durakool. Inc. 1010 N. Main St., Elkhart, Ind. WILSON. R. T. (S) Ferris Brick Co., Box 188 Ferris. Texas Roster 11 UTNBURN. H. L. (S) Box 1369, Little Rock. Ark. (Wincura Tile Mfg. Co.) WINEMILLER. William F. (R) 11 Ardmore Road. Worcester 9, Mass. (Norton Co.) WINKLER. Ber.o Ccramica Winkler Rua I de Marco 1:9, 2 amlar Rio de Janeiro, Brazil ATNaHIP, Lee C. (G) Syivania Electric Products. Inc. Emporium, Pa. WINTER, Aciuta Inst:tut d'optique Theorique et Appliquee, 3, Bid Pasteur Paris (IS*) France WIRTH. David G.. Jr. 618 E. Daniel St.. Champaign. 111. WISCONSIN PORCELAIN CO. (L. A. Stohl) 120 Lincoln St. Sun Prairie. Wise. WISE. L. G. (B) E. I. du Pont de Nemours St Co., [nc. Chemical Dept.. Experimental Sta. Wilmington, Del. WISEMAN. Claude F. (S) West Virginia Brick Co. Box 1071, Charleston, W. Ya. WISHOSrCI, I. Stanley (R) Industrial Heating 1400 Union Trust 3ldg. Pittsburgh 19. Pa. WISS. |. E. (MFI) 1339 Lincoln Rd., Columbus 12, Ohio (Consultant) WITMER. Frank (G) 612 W. Main St.. WoodviHe. Ohio (Ohio Lime Co.) , WITSCHEV. Ray A. (R) ' A. P. Green Fire 3rick Co. Mexico. Mo. WITTER. Raymond 3. Edincio Galipan. A-i-C. Av. Miranda El Rosa). Caracas. Venezuela i Fahrica ce Proaucto.v Ceramieo) WITUCKI. Robert M. (G) 4 W. Fifth St.. Coming. X. V. (Corning Glass Works) WIT2EMANN. A. W. tW\ 220 Allegheny Ave., Kittnnr.ing. Pa. (Eljer Co.) WOLCOTT. J. David r 3S Washington St.. Hnrurll. X. V. WCLD. T. fW) Smith 8c Stone. L:d. Georgetown, Ont.. Canada WOI.FEXSPERGER. R. E. (R) Carborundum Co. 2600 Neville Rd., Pittsburgh 25. Pa. WOLKODOrF, Vladimir E. (B> Carborundum Co. Buffalo Ave.. Niagara Falls. X. V. WOMELDORPH. R. C. (G) 13 Taft Ave.. Providence. R. I. WONGSOREDJO. Rasmadji Baiai PenjeJidikan Xeramik (Ceramic Institute) Djl. Raya Timur 340 Bandung, Indonesia WOOD. Clifton E. (W) 512 E. Ellen. Fenton, iMich. (A C Spark Plug Div., General Motors Corp.) WOOD, Koineth T. (R) 102 Grace Blvd.. Painted Post. N. Y. (Coming Glass Works) WOOD. Llewellyn. Jr. (S) Carrington Woods, R. R. 4, Box 209 Millcdgeville, Ga. (Oconee Clay Products Co.) WOOD. Russeil K. (WI) 3900 E. California St. Pasadena 10, Calif. (Wallace China Co., Ltd.) Vol. No. 10 (i9f)G) WOODBRIDGE. Thomas C. 38 Stirling Rd. Hayes. Middlesex. England (British Bath Co. Ltd.) WOODRUFF, Calvert M. (\V> American Xepheline Ltd. Nephton via Lakeneld, Ont.. Canada WOODRUFF, Ernest W. (R) Refractory Products Co. 910 Custer Ave.. Evanston. III. WOODS. C. J. (X) North American Philips Co., Inc. Research St Control Instruments Div. 750 5. Fulton Ave., Mt. Vernon, N. Y. WOODS, Hubert (B) Portland Cement Assn. 33 W. Grar.d Ave.. Chicago 10. 111. WOODS. William J. <M) Pennsylvania Glass Sand Corp. Box 627, Lewistown, Pa. WOODS. William J.. Jr. (M) Pennsylvania Pulverizing Co. Two Gateway Center Pittsburgh 22. Pa. WOODVILLE LIME PRODUCTS CO. (J. Robert Cowell. Jr.). 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'Corning Fiberglas Corp. Glass Research, Newark. Ohio WOOLEY, Seward E. (RI) 18 E. Brown St.. Somerville. X. J. (Johns-Manviile Research Center) WOOTEN, John H. (S) Elgin-Butler 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. Cresctnt E. Saskatoon. Sask.. Canada WORK. Lincoln T. (B) 36 W. J4th St.. Rin. 80 New York 36. X. Y. (Consulting Engineer) WRIGHT. D. K. (E) American Smeiting & Penning Co. 120 Broadway. New York 5. X. Y. WRIGHT. Edward P. (WI) Box 387. East Liverpool. Ohio (Tavlor. Smith Sr Tavlnr Co.) WRIGHT, J. E. Messrs. A. G. Hackney Sc Co., Ltd. Fatrneld Pottery. Hanley Stoke-on-Trent. England 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. WUELLNER. Joseph F. (E) 1602 Gabon Ave., Cleveland 9, Ohio (Ferro Corp.) WURTSBAUGH, C. G. (W) Glostex Chemicals, Inc. 3056 Bandini Blvd. Los Angeles 23, Caiif. WYATT. Bradley W. (S) Pacific Qay Products 9500 S. Norwalk Blvd. Los Nietos. Calif. WYCKOFF, W. R. (R) Joseph Dixon Crucible Co. 167 Wayne St.. Jersey Citv 3, N. J. WYCANT. James F. (Rl) Standard Oil Co. (Indiana) Engineering Research Dept. 2400 New York Ave.. Whiting, Ir.d. WYNDHAM-OUIX, Francis H.. Jr. (R> Box 30b. Avonmore, Pa. (General Refractories Co.) WYSONG. Charles F. (3) 425 Clay S:.. Marietta, Ca. (Georgia Institute of Technology) WYSOR. D. C. (R) General Chemical Division Allied Chemical Dye Corp. 40 Rector S:.. New York 6, N. Y. Y YAMAGUCHI. Mitsuo (W) 72 Oakwood Ave., Arlington. N. J. (Nontake Trading Corp.) YAMAMOTO. Hideo (G) 305 W. S9th St.. New York 24. N. Y. (Asahi Glass Co., Ltd.) YAMASAKI. Kazuo Chemical Institute. Science Faculty Nagoya University Chikusa, Nagoya. Japan YAMAUCHI. T. Tokyo Kogyo Daigzku (Tokyo Institute of Technology) Ookayama. Meguro-Ku, Tokyo, Japan YAM IN. Michael (G) Mellon Institute. 4400 Fifth Ave. Pittsburgh 13. Pa. YARTE. Andrew A. (W) Productus Ceramicos, 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) Fosroria Glass Co., Moundsville. W. Va. YOSHIKI. Burrpci 304 Tsururr.i-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) Demcth Glass Works. tnc.. Box 629 Parkersburg. W. Va. YOUNG. Howard S. (B) R. R. 1. Chadds Ford. Pa. (E. I du Pent de Nemours St 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 3ecd 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. Sonthbridge. 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. (WI) Case Manufacturing Corp. 1000 W. Pine St., Robinson, 111. Roster 110 YOUNG, \V\ O. (\VI) 6 Livingston St.. Honeoye rails, N. Y. (Victor Insulators Div., I-T-E Circuit 3rcaker Co.) YOUNGBLOOD, Charles }.. Jr. (C) Mississippi Glass Co. 8S Angelica St., St. Louis 7, Mo. YOUNT, Richard V. (Gi C. Tenr.ant Sons it Co. 100 Park Ave., New York 17. N. Y. YUTZEY. Marvin C. (D) Fostoria Glass Co.. I--00 First St. Moundsville, VV. 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 Penheld 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.) ZEHRLAL'T, Herbert A. R. (R) Calcium Aluminate Cement Corp. 232 E. 86th St., New York 28. N. V. ZEILLER. Irwin F. (M) 150 Mason Dr. Manhasset, Long Island, N. Y. (B. F. Drakenfeld 4 Co.. Inc.) ZELLER CORP. (R. E. Costello) Fort Wayne Rd.. Defiance, Ohio ZERFOS3. 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. 42na St.. New York 17, N. Y. ZIEGLE, Glenn D. 409 J/J W. University. Champaign, 111. ZIMAR, Frank (G) Corning Glass Works Main Lab., Corning, N. Y. ZIMMER. David C. (WF1) 513 Harding Rd., Zanesville, Ohio (Nelson McCoy Pottery Co.) ZIMMERMAN. Philip D. 611 W. Fayette Ave., Edingham, 111. ZIMMERMAN. William F. (B) 3836 McNicholas St. Cincinnati 36. Ohio (General Electric Co., Gas Turbine Div.) ZINK, George H. (El) A. O. Smith Corp. 35)5 N. 27th, Milwaukee 16, Wise. ZINK. Harold F. (G) Owens-Illinois, 1700 N. Westwood Ave. Toledo 2, Ohio ZLOCK, Evan ?. (G) I-T-E Circuit Breaker Co. 601 E. Erie Ave.. Philadelphia 34. Pa. ZLOTNICK, Herbert (BJ) 7902 Bav Pkv.. 3rooklvn. N. Y. ZNEIMER. Joel E. (BI) 108 Dud St., Watertown, Mass. (Raytheon Mfg. Co.) ZORZI. Eugene R. (M) C. Tennant. Sons 4 Co.. 100 Park Ave. New York 17, N. Y. ZUDNAK, Stephen J. (W) Box 1599, Trenton, X. J. (General Porcelain Co.) ZUMWALT, Donald A. (E) 6904 E. Slauson Ave. Los AngeJes 22, Calif. (California Metal Enameling Co.) ZVANUT. Albert J. (B) Lincoln Electric Co. 22801 St. Clair Ave.. Box 3115 Cleveland. Ohio ZVANUT. Frank J. (MI) 14533 Bayes Ave., Lakewood. Ohio (Godfrey L. Cabot, Inc.) ZWERMANN, Carl H. (BF) 806 W. Main St., Robinson, 111. ZWETSCH, Artur Villeroy 4 Boch Met:lach/Saar. Germany Addenda AMERICAN CYANAMID CO. (H. C. Milton) JO Rockefeller Plaza. New York, N. Y. BAAK. Tryggve (G) 1)21 Old Boalsburg R<1. State College. Pa. (Pennsylvania State University) BART. Ronald K. 503 W. Washington. Champaign, III. BOWMAN. George A. 402 E. Armory, Champaign. III. DAVILA, A. E. Fernandez Lnndres 1122 Longchamps-FNGR. Argentina (Ferro Enamel S. A.) GILBERT. Frank C. Box 827. Alfred. N. Y. HUND. William O. (R) Box 172, Ranson. W. Va. (Standard Lime it Cement Co.) EARNER. Ernest F. 806 S. Fifth St., Champaign, 111. 120 Roster McGREGOR. Jimmie R. Prather Hall. Rm. 344-3 Austin 18, Texas MEINDL. Joseph J. 601 W. University. Urbana. 111. MENTZER. Merle J. 406 E. Springfield Ave. Champaign. 111. MURPHY. Leone 1*. 1005 S. Lincoln Ave.. Urbana, III. NIEI-SEN. Thomas H. 406 W. Oregon, Urbana, 111. PLATT. James (S) Structural Clay Products Institute 2556 Clearview Ave. X.W. Canton. Ohio POTTER. Charles (G) Amend 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.. Horsehe.nl:>. N. Y. f Wexringhouse 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 Are. Chicago 37, 111. TAYLOR, Alan W. (B) Pennsylvania State Univenity Dept, of Ceramic Technology University Park. Pa. WEST-ORAM. Francis G. 11 Walnut Ln.. Hartford Northwich. Cheshire. England (Imperial Chemical Industries Ltd.) W1NGERTER. Donald 3. (R) 25 4 Oxford Ave.. Fair Haven, N. J. (Jnhns-Manvillet WRIGHT. Phil (W) Tavlor. Smith 4 Tavlor Co. Chester, W. Va. Ceramic Bulletin