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FILE NAME Rheem RHM DATE 1956 DOC RHM004 DOCUMENT DESCRIPTION The American Ceramic Society Bulletin 6710 February 10 1994 I hereby certify that the attached copies of the American Ceramic Society Bulletin Volume 35 1956 are true and accurate copies the original of which is maintained in the normal course of business at the American Ceramic Society 735 Ceramic Place Westerville Ohio 43081 Christine Schnitzer Product Manager Ceramic Information Center 735 Ceramic Place Westerville Ohio 43081-8720 TWX 7101109409 . PLAINTIFF'S EXHIBIT ~ 025310 . : EXHIBIT 07292.56 The American Ceramic Society BULLETIN A monthly publication devoted to the proceedings of The Society discussions of plant technical scientific art and cooperative research problems Volume 35 1956 Charles S. Pearce Editor James S. Welch Managing Editor Emmoline R. Jamra Editorial Assistant Mary Weigelt Rohr Editorial Assistant Charlotte B. Burgess Editorial Assistant Committee on Publications C. H. Hahner Chairman W. R. Kerr J. O. Everhart and E. P. McNamara Contributing Editors Officers of Industrial Divisions and Sections For names see back of Title Page Executive Editorial and Advertising Offices 4055 North High Street Columbus 14 Ohio Publication Office 20th and Northampton Streets Easton Pa Membership in The American Ceramic Society brings to you The Ceramic Bulletin a monthly publication devoted to news of The Society and of its members descriptive articles and papers on the application of fundamental research Its advertising pages provide a prestige media for reaching ceramists in every branch of the industry The Journal .depository .depository of original research in the ceramic field an archive of scientific knowledge When something new is developing in ceramic science you'll find it presented authentically accurately and first in The Journa Ceramic Abstracts a monthly report on all that is published on ceramic technology The literature of every nation is followed closely to assure that all material of ceramic significance is brought to your attention Publication Acceptance Acceptance of a scientific paper for publication by The Society is a mark of high recognition editorial review committees in specialized fields assuring rigid standards of technical excel- lence Local Section..In 20 centers of ceramic operations in the United States members of The Society hold frequent meetings to hear papers discuss matters of common interest and enjoy good fellowship Ceramists of the world gather for the Annual and Fall Meetings of The American Ceramic Society and its Divisions the presentation and discussion of papers on ceramic science for the exchange of ideas and for visiting with other ceramists Highest awards of the ceramic world are pre- sented at these meetings in recognition of achievement and service in the ceramic 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 St. COLUMBUS 14 OHIO VOL 33 No. 11 1956 Membership Roster The American Ceramic Society is Roster of members is published only for the use of merabers of The American Ceramic Society Listings are in alphabetical der A separate Roster for the National Institute of Ceramic Engineers showing grades of membership is on pages 121 to 125 this issue New members received too late to be included are listed in the Addenda on page 120 These listings give the member's preferred mailing address Where this is not his business address his company connection is shown parentheses Divisions and other Society affiliations are indicated in parentheses following each name in accordance with the code ren below The absence of any such designation indicates that the member is from outside the United States or a student member ither of which has Division affiliation Basic Science Division Design Division Enamel Division Glass Division Materials and Equipment Division Refractories Division Structural Clay Products Division W White Wares Division No Division affiliation Fellow of The American Ceramic Society Junior Member National Institute of Ceramic Engineers A 3BEY R. G. G General Refractories Co. 1520 Locust St. Philadelphia 2 3BOTT Gordon H. Rock Enamel Pay Ltd. Box Industria TVL Pa 77 Union of South Africa 3E Tosio 1001 ikegami Ota Tokyo Japan Tokyo Shibaura Electric Co. L BERNETHY Lonnie L. BI Argonne National Lab D22-2 Metallurgy Box 299. Lemont Ill BINGDON POTTERIES INC 1. M. Lewis 801 N. Main St. agdon III u IS Marvin E. W Sentry Sanitary Corp. Box 427 Mannington W. Va BRAMSON Isaac Av Copacabana Apto Rio de janeiro Brazil Klabin Irmaos & Cla 902 BRILLE A. Villa San Miguel Brewery inc 1112 Aviles Manila Philippines CCOUNTIUS Oliver E. R 118 E. Carter St Sierra Madre Calif General Corp. CHAUER L. A. S Natco Corp. East Canton Ohio CHUFF Charles E. W 839 S. Bailas Rd Kirkwood 22 Mo. CertainTeed Products Corp. CME BRICK CO George Puls Box 425. Fort Worth Texas C SPARK PLUG DIV GENERAL MOTORS CORP Karl Schwartzwalder Flint 2. Mich ADAMS CLAY PRODUCTS co James A. Cunningham Box 226 Martinsville Ind DAMS David E. Jr. W 830 Spring St Latrobe Pa Carborundum Co. ADAMS Earl E. W - National Plumbing Pottery Inc. Zanesville Ohio DAMS Edward M. S Murray Tile Co. Inc. Cloverport Ky ADAMS Milton G 9 W. Streicher St. Owens Toledo Glass 8 Ohio Co. AG..MS AG..MS P. Bruce G Corning Glass Works Research and Developnient Corning N. Y. VOL 35 No. 10 1956 ADAMS S. L. G Joseph E. Seagram & Sons Inc. Seventh St. Rd Louisville 1 Ky ADAMSTON FLAT GLASS DIV ROLLAND GLASS CO Box 631 Clarksburg W. Va ADCOCK Albert S. WI American Radiator & 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 Rd Wickliffe Ohio Clevite Corp. ADDERLEY James R. 42 Church St. Brierley Hill S. Stafford England E. J. & J. Pearson Ltd. ADERHOLD George H. W Saxonburg Ceramics Box 100 * Saxonburg Pa ADLER Arthur R Alloy Metal Powders Inc. 238 Eagie St Brooklyn 22. N. Y. AFFLERBACH Harry E R.R. 4. Frankfort Ind Richardson Inc. AGARWAL Gopal Mohan 104 E. 15th Ave. Columbus 1 Ohio A. G. DER GERRESHEIMER GLASHUTTENWERKE L. Breuer 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 Natco Clay Products Ltd Aldershot Ont Canada AKMORAN Miss Huban 398 Marlborough St. Boston Mass AKRON PORCELAIN CO F. W. Butler Akron 14 Ohio SCHOENBERG Ernst W 13 Redfield Village Metuchen N. 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 Keramische Fachschule Grenzhausen Koblenz Germany ALCOCK Ronald H. Ferrum Espana 402-600 Avellaneda Buenos Aires Argentina Ferrum L. A. de Ceramica y Metalurgia ALDEN Charles E. G 3427 Heather Downs Blvd. Toledo 14. Ohio Kimble Glass Co. C. ALELUIA Joao F. Av AraujoE. Silva 59 Aveiro Portugal Fabricas Aleluia ALENIUS Cari Axel Karhunkatu 28. Karhula Finland Oy A. Abistrom Karhula Bruk ALEXANDER A. E. G Buchanan Apts 3 D New York N. 17 Tiffany & Co. 155 E. 47th St. ALEXANDER John B. ML Southwestern Portland Cement Co. 1034 Wilshire Blvd. Los Angeles 17. Calif ALEXANDER John M. MI 2376 Hamilton Ave. North Beilmore N. Y. Swindell Corp. ALGEMENE VERENIGING VOOR De NEDERLANDSE AARDEWERK EN GLASINDUSTRIE W. J. Bollen Haagweg 139. Rijswijk Netherlands ALGER Ferris E. G Rd Old York 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 Ill ALLEN Ben G Corning Glass Works Corning N. Y. ALLEN Ralph W 1234 Paddock Hills Ave. Cincinnati 29 Ohio Briggs Mfg Co. ALLEN Richard L. RI E. J. Lavino & Co. Box 365 Newark Calif ALLEN Robert G. R Robert G. Allen Co. Mechanicville N. Y. Box 110 ALLEN Walter C. B Radio Corp. of America Chemical & Physical Lab 415 S. Fifth St. Harrison N. J. ROSTER 1 _LEN Warren W. Jr. S Hydraulic Brick Co. South Park Ohio CLIANCE WARE LTD R. E. Strain Box 550 Vancouver B. C. Canada LIEGRO Lt. JG Richard XJ MA F.P.O. New York N. N. : Adrian G. R elle Memorial Institute bus King Ave. Columbus , MAN Orin H. G Kimble Glass Co. Ohio Illinois Technical Center 1700 N. Westwood Ave. Toledo , Ohio LT Leslie R. SI 547 Simon St. Hayward Calif Kraftile Co. LTMANN Berton G. B 16700 Cypress Way Los Gatos Calif Kaiser Aluminum & Chemical Corp. LTON BRICK CO Morris P. Hall Box 25 Maryland Heights Mo. LTSCHULER Otto W 271 Hawthorne Ave. Langhorne Pa Wenczel Tile Co. LUMINIUM LIMITED SALES INC R. M. Mathieson 630 Fifth Ave. New York 20 N. LUMINUM CO OF AMERICA H. P. Bonebrake 1501 Alcoa Pittsburgh 19 Pa MERICAN COLLOID CO Bldg Paul Bechtner Merchandise Mart Plaza Rm 813 Chicago 54 Ill MERICAN ENCAUSTIC TILING CO INC Robert A. Williams Jr. 1000 N. Cannon Ave. Lansdale Pa MERICAN GAS ASSOCIATION C. G. Segeler 420 Lexington Ave. New York 17 N. Y. MERICAN LAVA CORP R. A. McGinnis Cherokee Blvd. 2 Migrs Rd Attanooga 5. Tenn i CAN NEPHELINE LTD a R. Deeth 25 King St. W Rm 2530 Toronto Ont Canada MERICAN OPTICAL CO A. H. Bennett Research Center Southbridge MERICAN PORCELAIN Mass ENAMEL CC Robert 1285 E. Keating Ave. Muskegon 36. Mich MERICAN POTASH & Long Sr. CHEMICAL CORP R. M. Curts 99 Park Ave. New York N. Y. MERICAN RADIATOR & STANDARD SANITARY CORP James S. Goodman 834 E. Broadway Louisville 4. Ky MERICAN SMELTING & REFINING CO D. K. Wright 120 Broadway New York 5. N. Y. MERICAN WINDOW GLASS CO A. S. Crandon 20th Floor Farmers Bank Bldg Pittsburgh 22 Pa AMES R. N. RI 10718 S. Morgan St. Chicago 43 III U. Steel Corp. MES Robert G. W 69 Jefferson Ave. Cresskill N. J. B. G. Corp. MIN R. B. Alembic Chemical Works Co. Ltd. Industries P. O. Chemical Baroda 3. India MMERMAN J. H. RI 202 Scribner DuBois Pa North American Refractories Co. \ EIN Alan G. Box 1659 Corgia Institute of Technology Atlanta Ga ANCHOR HOCKING GLASS CORP William V. Fisher Lancaster Ohio VOL 35 No. 10 1956 ANCIZAR Jorge Laboratorio Quimico Nacional Ministerio de Minas y Petroleos Apartado 2577 Bogota Colombia ANDERSON Harlan U. 1424 Federal Way Salt Lake City Utah ANDERSON Harry L. R Republic Steel Corp. Youngstown 1 Ohio ANDERSON Herbert H. G 401 N. Main St. Port Allegany Pa Pittsburgh Corp. ANDERSON Orson L. G Bell Telephone Labs Murray Hiii N. J. ANDERSON R. E. W Robertson Mfg Co. Box 848 Trenton 5 N. J. ANDERSON R. H. S Robinson Clay Product Co. Box 545 Dover Ohio ANDERSON Rober E. W Iroquois China Co. 2320 Milton Ave. Syracuse 9 N. Y. ANDERSON Robert R. 185 Cynthia Dr. Pleasant Hill Calif ANDERSON Rupert C. W Valley View R. R. 10 NewBrighton Pa Mayer China Co. ANDERSON Scott G Anderson Physical Laboratory 609 S. Sixth St. Champaign Ill ANDERSON William B. E Titanium Pigment Corp. 111 New York 6. Y. Broadway 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 Ill ANDREWS Clifford M. Ferro Enamel S. A Caixa Postal 2948 Sao Paulo Brazil ANDREWS Ray G B. F. Drakenfeld & Co. Inc. Box 519 Washington Pa ANTAKI Emile Ferrum S. A. de Ceramica & Metalurgia Espana 02/600 Avellaneda Argentina ANTHONY Benjamin F. R Ferro Engineering Co. 1400 Hanna Bldg Cleveland 15 Ohio ANTHONY George H. R 41 Marion Dr. Poland Ohio Youngstown Sheet & Tube Co. ANTHONY Harry L. III R Mellon Institute 4400 Fifth Ave. Pittsburgh 13. Pa ANWYL Robert H. S Lisbon St. Glenmoor MC East Liverpool Ohio APT Elmer E. S A. C. Ochs Brick & Tile Co. Springfield Minn ARANGO G. Botero Balboa 63-13 Medellin Colombia Cristaleria Peldar S. A. ARCHBOLD Walter H. Jr. MI 125 Smallwood Dr Snyder 21 N. Y. Electro Refractories & Abrasives Corp. ARCHIBALD W. A. British Iron & Steel Research 140 Battersea Park Rd London S. W. 11. England Assn 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 Meeus N. V. Ceramique Maastricht Hoge Barakkenstraat 6 Maastricht Netherlands ARKETEX CERAMIC CORP George W. Shoemaker 6 N. Walnut St. Brazil Ind ARMCO STEEL CORP R. S. Burns Research Library Middletown Ohio ARMISTEAD W. H. G 65 E. First St. Corning N. Y. Corning Glass Works ARMSTRONG CORK CO E. C. Emanuel Research & Development Center Lancaster Pa ARMSTRONG Leland R. RI 27 Morgan Ave. Washington Pa Findlay Clay Products Co. ARNOLD Howard C. EFI 76 Standish Blvd. Pittsburgh 28 Pa Federal Enameling & Stamping Co. ARNOLD Robert M. B Arnold Engineering Co. Marengo Ill ARNOLD Russell E. SF Box E. E. Akron Station Akron 5 Ohio Robinson Clay 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 Glass Mfg Co. Inc. 1901 Grand Central Ave. Elmira N. Y. ARRAS George E Quadrangle Mfg Co. 32 S. Peoria St. Chicago 7. Ill 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 Inc. ARTIS William E. D Nebraska State Teachers College Chadron Nebr ARWINE A. S. R Refractory & Insulation Port Kennedy Pa Corp. ASDELL Bernard K. W Edgar Division Minerals & Chemicals Corp. of America McIntyre Ga ASHER John W. G Box 382 Corning N. Y. Corning Glass Works ASHWORTH GEORGE L. & BROTHERS LTD W. Gordon Evans Broad Street Works Hanley Trent England ASQUITH Milton Redfearn Brothers Ltd. Monk Bretton Glassworks Barnsiey England - ASSOCIACAO BRASILEIRA DE CERAMICA Praca Coronel Fernando Prestes 110 Edificio do I.P.T. Sao Paulo Brazil ATWELL George D. Jr. S Bickerstaff Brick Co. Box 1178 Columbus Ga AUER Konrad F. Netstal Kt Glarus Switzerland Kalkfabrik Netstal Ag AUKLAND Merrill F. S Ohio University Dept. of Geology Athens Ohio AULT Neil N. BI Norton Co. 1 New Bond St. Worcester 6 Mass AUSKERN Allan BJ Westinghouse Atomic Power Box 1468 Pittsburgh 30. Pa Div AUSTENAL INC R. C. Feagin 224 E. 39th St. New York 16 N. Y. ROSTER 3 AUSTERMAN Stanley B. B 7006 Andasol Ave. Van Nuys Calif Atomics International AUSTIN Arthur O. B Box 109 Barberton Ohio A. O. Austin Co. AUSTIN Charies E. S Consolidated Brick Co. Horseheads N. Y. AUSTIN Chester R. RFI Oxygen Converter Dept. Kaiser Engineers - 1924 Broadway Bldg Oakland 12 Calif AUSTIN Garth F. Gen. Del Alfred N. Y. AUSTIN James Bliss BF United States Steel Corp. Rm 2401 25 William Penn Pl Pittsburgh 30 Pa AUSTIN Lewis M. G 2334 Middlesex Dr. Toledo 6 Ohio Illinois AVERY Robert C. Box 826 Alfred N. AVRIL Jack J. 8804 Frances Folson Rd S.W. Tacoma 99 Wash AYDELOTT Elliott C. SI Waverly Pa International Salt Co. AZEVEDO Marcello R. V. de ) Caixa Postal 2818 Sao Paulo Brazil Ceramica Sanitaria Porcelite A BAAB Kenneth A. RI 628 Sixth Ave. Bethlehem Bethlehem Steel Co. BAARSON Robert E. M Armour Chemical Div Pa Flotation Research Section 1355 W. 31st St. Chicago 9 Ill BABA Paul D. 158 Pennington St. Elizabeth 2 N. J. COCK Clarence L. GF 1718 Potomac Toledo 7 Ohio Illinois BABCOCK M. G. G 618 Kenilworth Dr. Pittsburgh 34 Pa Pittsburgh Plate Glass Co. BABCOCK Paul R. WI Frenchtown Porcelain Co. Frenchtown N. J. BABCOCK & WILCOX Co. J. E. Brinckerhoff 161 E. 42nd St. New York 17 Y. BACH Carl H. S Tuthill Bldg Material Co. 545 E. 103rd St. Chicago 28 Ill 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. BACHMAN 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 Corp. 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. GF 153 Darlington Rd Toledo 6 Ohio . Owens BACON James F. G 130 Pritchard Ave. Corning N. Y. Corning Glass Works VOL 35 No. 10 1956 BADGER Alfred E. GF Libbey Glass Co. 1701 E. Broadway Toledo 5 Ohio BAER G. M. R R. C. Remmey Son Co. Hedley St. & Delaware River Philadelphia 37 Pa BAGBY Richard A. BJ 15 Allerton Rd Dayton 5 Ohio Wright Air Development Center BAGLEY Norman H. W 206 Central Ave. Caldwell N. J. Bell Telephone Laboratories Inc. BAILEY Floyd EI 840 S. Sixth Ave. Kankakee III : A. O. Smith Corp. BAILEY Henry R. Jr. M Golding 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 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 Corning Glass Workcs Corning N. Y. BAKER Arvid H. G 300 Catlin Ave. Port Allegany Pa Pittsburgh Corning Corp. BAKER Burton E. R 15 Gwynlake Dr. Baltimore 7. Md General Refractories Co. BAKER Daniel R. 606 W. Columbia Champaign Ill 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 Schurtz Co. 301 Lincoin Ave. Lancaster Ohio BAKER Robert L. G 46 Highland Ave. Wellsville Air Preheater Corp. N. BAKER Theodore C. G R.R. 1 Wayne Ohio Illinois BALDAUF Earl E. WI Flamingo Tile Corp. Box 112 Lake Wales Fla BALDRY Stanley F. T. E. R. G. Industrial Corp. Ltd. Luton Rd Dunstable Beds London England BALDWIN W. J. W Titanium Alloy Mfg Div National Lead Co. Box C Bridge Station Niagara Falls N. Y. BALINA Marcelo O. C.A.P.E.A. Lanus 7 C. Grai 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 Aluminum & Chemical Corp. BALL Albert L. R Bay State Abrasive Products Co. Westboro Mass BALL BROTHERS CO INC Muncie Ind BANERJEE A. Behar Firebricks & Potteries Ltd. P. O. Mugma Dist Manbhum India BAQUE Harold W. GI 1511 Mohican Dr. Pittsburgh 23 Pa Corhart Refractories Co. BARBA Charies E. Jr. M Creek Rd R. R. 1. Doylestown Pa Sales Engineeri BARBER Fred O M 788 Evening St Worthington Ohio Harrop Ceramic Service Co BARBER Stephen W. G Illinois 1700 N. Westwood Ave. Toledo , Ohi BARBOUR David J. WF 345 E. Highland Dr. Zanesville Ohio BARBRE Norris H. S Mellon Institute 4400 Pittsburgh 13 Pa Fifth Ave. BARDSLEY James J. 404 Spruce St. 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 B. BF A Spark Plug Div General Motors Corp. Flint 2 Mich BARNA Gordon L. R. 7. Box 575 Tacoma Wash BARNES Harry H. BI Wah Chang Smelting & Refining Corp. Herbhill Rd Glen Cove N. Y. BARNES Lehman W. 434 S. Second St Smithfield N. BARNES Wilson R. R Corhart Refractories Co. 16th & Lee Sts Louisville 10 Ky BARNET Joaquin Ceramicas per Apartado 1243. Havana Cuba BARNEY Ronald N. BJ 5487 Cobb Dr Dayton 3. Ohio Wright Air Development Center BARON Jean Laboratoire de Controle des Produits Refractaires 15. Place Carnot Nancy Meurthe et Moselle France BARR Haroid N. B Glenn L. Martin Co. Nuclear Eng Div 710 Baltimore 3 Md BARR Harry 3 Consolidated Feidspar Dept. International Minerals & Chemical Box 1843 Trenton 7. N. J. Corp. BARR Robert A. M 867 River Rd Fair Haven N. J. Carborundum Co. BARR Seymour J. S Shenandoah Brick & Tile Corp. ~ Box 32 Winchester Va - - BARRETT E. L. R Chas Taylor Sons South Shore Ky Co. BARRETT Harvey N. Jr. R 2233 St. James Parkway Cleveland Heights Ohio Basic Inc. . BARRETT Maurice Life 8 Oxcliffe Rd Morecambe and Heysham England BARRETT Wayne E. S R. R. 1 West Des Moines Iowa Oskaloosa Clay 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 & Penn R. R. Cincinnati 13 Ohio ROSTER 5 BARTA R. Czechoslovak Ceramic and Glass Society Technicka ul.c.5 Praha XIX Czechoslovakia BARTHOLOMEW George A. United States Steel Corp. Applied Research Lab Monroeville Pa 5 RTHOLOMEW George L. Box 1009 Alfred Y. BARTLETT CO Harrison 1. Bartlett Sapulpa Okla Box 519 BARTLETT E. E. G 4387 Boca Chica Blvd. Brownsville Texas Bartlett Co. BARTLETT Harrison I. G Bartlett Co. Box 519 Sapulpa Okla BARTON James E. Box 2435. Clemson Clemson S. C. College Sta BARZAGHI Luciano Ceramica Sao Caetano Rua Roa Vista 133-4 andar Caixa Postal 278 Sao Paulo Brazil BASIC INC H. C. Lee 845 Hanna Bldg Cleveland 15 Ohio BASLER Wayne G. XJ 1504 N. Belt West Belleville III Aluminum Co. of America BASS N. W. R Brush Beryllium Co. 4301 Perkins Ave. Cleveland 3 Ohio BASSETT Leon B. B Box 284 Alfred N. Y. State University of New York College of Ceramics BASSETT Ray E. S Acme Brick Co Box 425 For Worth 1. Texas BASSETT Robert S Central Commercial Co. Darlington Beaver County Pa TEMAN TEMAN L. A. E Eljer Co Enamel Div Salem Ohio BATES A. Allan B Portland Cement Assn 33 W. Graad Ave. Chicago 10 BATES Charles E. S 128 Walnut St. Brookville Pa Hanley Co. BATES Edgar A. B 4506 Toni Lane San Diego 15. Convair Ill Calif BATES Frank O. W Solar Mfg Corp. E. 46th St. at Seville Los Angeles 58 Calif BATES P. H. Life XF . 1620 Seventh St. N. St. Petersburg Fla BATES W. S. R Spectrochemical Labs Inc. 1010 Wood St. Pittsburgh 21 Pa BATESON H. Marshall 68 Spring Grove Loughton Essex England Thermos Ltd. BATESON Sydney G Duplate Canada Ltd. Oshawa Ont Canada BATRUK Stanley J. Jr. E New Jersey Zinc Co. 160 Front St. New York 38 N. Y. BATTISTA George Box 747 Alfred N. Y. BAUER Richard M. M 728 St. Louis Ave. Zanesville Ohio Mosaic Tile Co. BAUER Wolf G. S : 5622 Seaview Ave. Seattle 7 Wash Consulting Engineer AULEKE Maynard P. 6910 Meadow Brook Blvd. Minneapolis 26 Minn VOL 35 No. 10 1956 BAUM Frederick J. Jr. B E. I. du Pont de Nemours & Co. Inc. Experimentali Station Chemical Dept. Wilmington Del BAUMANN Henry N. Jr. BFI 1275 Wyoming Ave. Niagara Falls Y. Carborunduma Co. BAUMER Leon N. R 240 Rockingham Rd Pittsburgh 38 Pa Mellon Institute 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 O. S. Buckner Westboro Mass BEAL D. S. E 15 Oak Dr. Poland Ohio Youngstown Sheet & Tube Co. BEALS M. Dougias BI Research Lab Titanium Division National Lead Co. South Amboy N. J. BEALS Robert J. WI 109 Ceramics Bldg University of Illinois Urbana Ill BEAM James R. WFI 300 Ruth Ave. Mansfield Ohio Ceramic Engineering Service BEARD Clinton L. WI Union Inc. 900 E. Keefe Ave. Milwaukee 12 Wisc BEARDSLEY Clinton J. W 666 E. Findlay St. Carey Ohio Porcelain Products Inc. BEASLEY Dennis R. G 659 McCuiloga St. Morgantown W. Va Struc Fibers Inc. BEASLEY Robert M. G Corning Glass Works Corning N. Y. BEATHARD Robert K. W General Tile Corp. Box 38 El Segundo Calif BEATON Orville W Gem Clay Forming Co Sebring Ohio BEAVER Wallace W. M Brush Beryllium Co. 4301 Cleveland 3 Ohio Perkins Ave. BEAZELL William H. G American Window Glass Co. 20th Floor Farmers Bank Bldg Pittsburgh 22. Pa BEBBINGTON Philip J. E 2 Barker Lane Saxonville Mass Arthur D. Little Inc. BECHTNER Paul M American Colloid Co. Merchandise Mart Plaza Room 813 - Chicago 54. III BECK Elmer W. M Ceramic Supply Co. Crooksville Ohio BECK J. Howard M BTU Engineering Co. 440 Somerville Ave. Somerville 43 Mass BECK Norman R. G Lowrey Glass Co. Baltimore 3 Md BECK Warren R. B Minnesota Mining & 900 Fauquier Ave. St. Paul 6 Minn Mfg Co. BECKEMEYER Harry J. W Universal Corp. W. Keith McAfee Lab Box Mahoningtown Pa 1268 BECKER Bruce N. G 602 N. Marshall St. Lancaster Pa Radio Corp. of America LECKER Martin G. S Brookhaven Pressed Brick & Box 542 Brookhaven Miss Mfg Co. BECKER Walter D. S Brookhaven Pressed Brick & Box 542 Brookhaven Miss Mfg Co. BEECHER Milton F. RFI 50 Woodland Rd Holden Mass Norton Co. BEELER L. S. W Reynolds Metals Co. 2500 S. Third St. Louisville 1 Ky BEERMAN Henry P. B Philco Tube Laboratory Church Rd Lansdale Pa BEERS Roland F. B Box 1019 Troy N. Y. Roland F. Beers Inc. BEETON Earl E. GI 1604 Lincoln St. Bethlehem Pa 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 O. Mugma Dist Manbhum India BEHREND Oswald R 2557 Robinwood Toledo Ohio Owens 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. 525 William Penn Place Room 2421 Pittsburgh 30 Pa BELD George H. W Kelvinator Div American Motors Corp. 1600 Clyde Park Ave. S. W. Grand Rapids 9. Mich BELKOWSKI Arthur V. G 161 Whittenton St. Taunton Mass General Electric Co. BELL Clarence D. Box 3438. Clemson Clemson C. College Station BELL Kenneth E. S 349 Lacasse Ave. Apt 6 Eastview Ont Canada Ottawa Brick & Terra Cotta Co. Ltd. BELL Richard M Bell 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. Mich 729 Meldrum Ave. Detroit 7 - BELLIDO Bartolome 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 Hytron Kent & Warren Newburyport Mass Sts 1 BENDER John H. R Denver Fire Clay Co. Box 510 Denver 17 Colo BENEDICT Virginia American Ceramic Society 4055 N. High St. Columbus 14 Ohio BENJAMIN ELECTRIC MFG CO Hoyt P. Steele Des Plaines Ill BENNER Stanley G. E Manville Research Manville N. J. Center ROSTER 7 BENNER W. J. R 730 Romona Rd Wilmette Ill Pyro Refractories Co. BENNETT A. H. G American Optical Co. Research Center Southbridge Mass BENNETT A. Lee SFI 1830 Las Flores Dr. Glendale Calif Pacific Clay Products BENNETT Dwight G. EFI 204 Ceramics Bldg University of Illinois Urbana III BENNETT Edward W B. G. Corp. . 321 Broad Ave. Ridgefield N. J. BENNETT Frederick R. R Box 325. Hartsville S. C. Carolina Refractories Co. BENNETT Harry J. W Crooksville China Co. Crooksville Ohio BENNETT Myles P. BI 6552 N. Oldham Lane San Gabriel Calif Gladding McBean & BENNETT Walter R. S Co. Acme Brick Co. Millsap Texas BENSON Edward R New Departure Div General Motors Corp. Bristol Conn BENTZ George B. W National Plumbing Pottery Inc. 305 N. Front St. Columbus 15 Ohio BENZEL James F. 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. BERGER 925 S. Homan Ave. Chicago 7. Ill BERGER Donald Francis G 41 W. South St. Painesville Ohio Diamond Alkali Co. BERGERON Chiton G. EI Whirlpool Corp. 300 Broad St. St. Joseph Mich ~ IVERSEN Wiggo A Egersunds Fayancefabriks Co. Egersund Norway BERKELHAMER Louis H. EI 3621 W. Howard ... Skokie !!! Ohmite Mfg Co. BERNARDINI Guy F. W Box 19. P. R. Latrobe Pa Stupakor Div Carborundum Co. BERNS Milton H. M 249 Charlotte Ave. Hamburg Electro Refractories & Abrasives Corp. Y. BERNSTEIN Leonard B Kwikset Locks Inc. 516 E. Santa Ana St Anaheim Calif BERNSTORF Robert B. D Box 679 East Liverpool Ohio Commercial Decal Inc. BERRIN Lloyd c Jack Cole 57314 Carlton Way Hollywood 28. Calif BERRY Thomas F. B 527 34th St Union City N. J. Radio Corp. of America BERTHA Edward J. 3310 N. Calvert St. Baltimore 18. Md BESSE Richard W. W Onondaga Pottery Co. 1856-58 W. Fayette St. Syracuse 4 N. Y. BESSEY George E. Chalk Lime & Allied Ind Res Assn 30 Church St. Welwyn Herts England ST Edison F. G Owens Glass Co. 1701 E. Broadway Toledo 5. Ohio BEST WILLIAM S. S R.R. 3. New Bethlehem Pa New Bethlehem Tile Co. VOL 35 No. 10 1956 BETHLEHEM STEEL CO Hobart M. Kraner Bethlehem Pa BETTISON L. S. S Chambers Brothers Co. 52nd & Media St. Philadelphia 31 Pa BETZ GEORGE C. MFI Metal & Thermit Corp. 100 Park Ave. New York 17 Y. BETZ Wilber A. W U. Potters Assn 104 E. Fourth St. East Liverpool Ohio BEVERIDGE John F. W 10 Stanford St. Halifax Nova Scotia Royal Canadian Navy BEVIS Ralph E. EI 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. B. G. CORP Edward Bennett 321 Broad Ave. Ridgefield N. J. BICKERSTAFF CLAY PRODUCTS CO L. N. Bickerstaff Box 1178 Columbus Ga BICKERSTAFF L. N. S Bickerstaff Clay Products Co. Box 1173 Columbus Ga BICKFORD Fred A. G Box 29 R.R. 2. Campbell N. Y. Corning Glass Works BIDDLE George J. R 208 S. LaSalle St Chicago 4 III Illinois Clay Products Co. BIDDULPH Albert 11 Holden Rd Wolverhampton England Ferro Enamels Ltd. BIELSTEIN Hans O. R Metallurgy Research Branch Aeronautical Research Lab WCRRL WADC Patterson AFB BILLHEIMER John E. W Highwood Easton Ave. New Brunswick N. J. Mitchell Co. BILLIAN Carroll J. G Illinois General Research Ohio Div 1700 N. Westwood Ave. Toledo 1. Ohio BILLINGS David D. G Glass Containers Corp. 3601 Santa Fe Ave. Los Angeles 58 Calif BIONDI Joe 2310 E. 52nd St. Los Angeles 58 Calif BIRCH Raymond E. RFI Harbison Refractories Co. 1800 Farmers Bank Pittsburgh 22 Pa BIRSE Alexander L. Bldg John G. Stein & Co. Ltd. Bonnybridge Scotland BISHOP Frederic L. GF Kimble Glass Co. Illinois Technical Center 1700 N. Westwood Ave. Toledo 7. Ohio BISHOP George J. III S Guignard Brick Works Box 480 Columbia S. C. BISHOP Harold E. G Corning Fiberglas Corp. Anderson S. C. RISHOP Laverne R. R Aluminum Co. of America 3300 Missouri Ave. East St. Louis III BISSELL Don W Jr. RI 703 Green St. Rockton Ill Ipsen Ceramics Inc. BISSET Ronald W. R Aluminium Limited Sales Inc. 630 Fifth Ave. New York 20 N. Y. BIXBY Henry D. S Central Commercial Co. Darlington Beaver County Pa BLACK H. R. G Kimble Glass Co. 1700 N. Westwood Ave. Toledo Ohio BLACKBURN A. Reif MI 204 N. State St. Westerville Ohio Ram Inc. BLACKBURN Douglas H. G 3921 Langley Ct Washington 16 D. C. National Bureau of Standards BLACKWOOD James M. RI 124 First St. Niagara Falls N. Carborundum Co. BLAES Henry M. II B 339 N. Hoover Ave. Whittier Calif North American Aviation BLAHA Emil R 415 Ashmead Rd Cheltenham Pa Selas Corp. of America BLAIR Gerald E. G 667 Palmyra Rd Pittsford N. Y. Bausch & Lomb Optical Co. BLAIR Marion W. SF 2131 S. Center St. Terre Haute Ind Manufacturers Equipment Co. BLAISON Pierre Socieze des Electrodes & Refractaires Savoie 16. Rue de Monceau Paris 8 France BLAKE William V. RI Macklin Abrasive Co. Jackson Mich BLAKELY Alexander M. B Precision Grinding Wheel Co. Inc. 8301 Torresdale Ave. Philadelphia 36. Pa BLANCHARD M. Kenneth E - A. O. Smith Corp. 3533 N. 27th St. Milwaukee 1. Wisc BLAU Henry H. GFI Federal Glass Co. 515 E. Innis Ave. Columbus 7. Ohio BLAZOVIC Phil Jr. M 3286 Western Ave. Highland Park Ill Consolidated Feldspar Dept. International Minerals & Chem Corp. BLECHEISEN J. E Rosiclare Lead & Fluorspar Mining Co. Rosiclare Ill BLENKO William Henry Jr. 1412 Main St. Milton W. Blenko Glass Co. Inc. G Va BLESSING Robert Lee SI 1714 Crestwood 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 826. Alfred N. Y. - - BLOCKSIDGE Arthur B. Jr. R Jones & Laughlin Steel Corp. 40 Longworth St. Pittsburgh 7. BLODGETT William E. W 11 Lakeview Terrace Woburn R. Guastavino Co. Pa Mass BLOHM Richard E. E 1657 E. Waverly Way Baltimore 12. Md Rheem Manufacturing Co. BLOME James C. 1108 S. First Champaign III BLOOM Ray A. R Technical Library Timken Roller Bearing Co. Canton 6. Ohio BLOOR C. A. W Universal Clay Products Sandusky Ohio Co. BLOORE Robert Boulton Swinnertons Ltd. Hanley Trent England ROSTER 9 BLUE RIDGE GLASS CORP J. H. Lewis Kingsport Tenn BLUM Seymour WI Raytheon Manufacturing Co. Research Div Waltham Mass E. Arthur J. SI Aurray Tile Co. Cloverport Ky BLUMER Fridolin D Lane Gate Rd Cold Spring Putnam Co. N. Y. Commercial Decal Inc. BLUNT Royden A. GF Buck Glass Co. 841 E. Fort Ave. Baltimore 30. Md BLYTHE COLOUR WORKS LTD Cresswell Trent England BOARDMAN Charlotte K. R Thomas A. Edison Inc. 51 Lakeside Ave. West Orange N. J. BOBROWSKY A. R. R 2012 Pontiac Rd R. R. 2 Ann Arbor Mich Ford Motor Co. BOEKER V. GI Corning Fibergias Corp. 598 Madison Ave. New York 22 N. Y. BOGATAY Paul D 45 W. Weisheimer Rd Columbus 14 Ohio Ohio State University BOGNAR Edwin J. RI Bognar & Co. Inc. 1711 First National Bank Bldg Pittsburgh 22 Pa BOHN Edward L. R Mullite Refractories Co. 10 Canal St. Shelton Conn BOLANOVICH Melvin S 3118 Paimer Sq Chicago 47 Ill Illinois Brick Co. BOLE George A. XF Engineering Experiment Chio State University Station Columbus 10 Ohio Algemene Vereniging voor de Nederlandse Aardewerk en Glasindustrie Haagweg 139 Rijswijk Netherlands BOLLINGER Robert H. MI Georgia Kaolin Co. 433 N. Broad St. Elizabeth 3. N. J. BOLON David G. RI 5525 E. 31st Indianapolis Ind Sales Representative BOLTON Harry L. R Philadelphia Quartz Co. Public Ledger Bldg Independence Square Philadelphia 6. Pa BOLZ Leonard H. B National Bureau of Standards Div 7 Conn Ave. & Van Ness Washington 25. D. C. BONEBRAKE H. P. M Aluminum Co. of America 1501 Alcoa Bldg Pittsburgh 19 Pa BONNOT CO B. T. Bonnet 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 Second St. Easton Pa BOOTH John F. Hazlehead Hall Penistone Nr Sheffield Sheffield York England Hepworth Iron Co. Ltd. BOOZE M. C. RFI 4725 Walton Creek Rd Cincinnati 27. Ohio Charles Taylor Sons Co. PP Harold F. GF 67 Gorton St. Corning N. Y. Corning Glass Works BOROM Marcus P. Box 128 Waynesboro Ga VOL 35 No. 10 1956 BOROS John W Paci Tile & Porcelain Co. 7716 E. Olive St. Paramount BOSCH F. M. Lab Anorganisch & Electro chemie Calif 22 Plateaustraat Ghent Belgium BOSLER Krell E 56 Marti Rd Corner Lakeview Dr. Gardner Mass Florence Stove Co. BOTFIELD George B. R Botfield Refractories Co. Swanson & Clymer Sts Philadelphia 47 Pa BOTFIELD REFRACTORIES CO George B. Bot^-eld Swanson & Clymer Sts Philadelphia 47 Pa BOTHE James V. G 3 Pyrex St. Corning N. Y. Corning Glass Works BOUDER Norman M. Jr. G 4820 Roland Ave. Baltimore 10 Md Pemco Corp. BOURGERIE R. D. W Radio Materials Corp. 3325 N. California Ave. Chicago 18 Ill BOVEE Benedict A. M 1837 Winter Rd Grand Island R.F.D. N. Y. Harper Electric Furnace Corp. BOWDEN James J. B Bowflux Co. Box 65 Cortland Ohio BOWEN ENGINEERING INC William A. Bowen North Branch N. J. BOWEN William A. M Bowen Engineering Inc. North Branch N. J. BOWER David N. G 3932 Rohr Dr. Toledo 13 Ohio Illinois BOWERS Donald j B 950 Highland Dr. Columbus 14. Ohio Battelle Memorial Institute BOWES Urban E. GF Illinois Box 1035 1036 Toledo I Ohio BOWMAN Donald C. E 79 S. Craig Pl Lombard Ill 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 Refractories Co. 609 Jackson Bldg Buffalo 2. N. Y. BOWNE Martin S. SI Lee Clay Products Co. Clearfield Ky Inc. BOYCE Joseph M Vitro Mfg Co. 60 Greenway Dr. Pittsburgh 4 Pa BOYCE Robert E. W Harker Pottery Co. 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 Pyrophyllite Co. BOYD L. R. Jr. S Teague Brick & Tile Co. Box 329 Teague Texas BOYD Robert C. EFI . American Standard 1541 S. Seventh St. Louisville 8 Ky BOYLES John P. W Edwin M. Knowles China Co. Newell W. Va BOYNTON Claudia G. D 1012 N. Franklin St. Manchester Iowa Industrial Publications Inc. BOYNTON Robert S. X National Lime Assn 925 15th St. N. W. Washington 5. D. BOZZO J. G. G Pierce Glass Co. Railroad Ave. Port Allegany Pa BRACKBILL Charles E. R 1650 Liggett Ct St. Louis 19 Mo. Laciede Co. Div H. K. Porter Co. BRADEN Roger W. M Hammond Lead Products 526 Calumet Bldg Hammond Ind BRADEN William E. Ferro Corp. Far East Div Box 5130 Kowloon Hong Kong BRADFORD Virgil E. WJ 574 E. Gates St. Columbus 6 Ohio BRADLEY Alan L. Cullinan Refractories Ltd. P. O. Olifantsfontein Transvaal South Africa BRADLEY Charles A. Jr. G Pinewood Acres R. R. 3. Corning N. Y. Corning Glass Works BRADLEY Edward L. Georgia Institute of Technology Box 4985 Atlanta Ga BRADLEY Fennimore N. I 940 Oregon St. Palo Alto Calif BRADLEY R. S. RFI 4 Park Circle Mexico Mo. A. P. Green Fire Brick Co. BRADSTREET Samuel W. E Armour Research Foundation 10 W. 35 St. Chicago 16 Ill BRADWELL Cyril RI Parkhurst Apts 7B Barbara & Marion Sts Bethlehem Pa Bethlehem Steel Co. BRADY Eari S Box 522 Waskom Texas Acme Brick Co. BRADY John G. B Dept. of Mines & Technical Ceramic Section 40 Lydia Ottawa Cat Canada Surveys St. BRADY Justin M. W 1320 N. Delaware Apt 604 Indianapolis Ind American Art Clay Co. BRADY T. E. R Surface Combustion Corp. 2375 Dorr St. Toledo , Ohio BRAIN Douglas 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. B 1076 Karesh Ave. Pomona Calif Convair BRANDT Martha W. G National Glass Budget 800 Grogan Bldg 510 Wood St. Pittsburgh 22 Pa BRANDT Neill M. G Mellon Institute 4400 Fifth Ave. Pittsburgh 13 Pa BRANDT William O. WFI 2951 Delor Dr. Los Angeles 32 Calif BRANT Arthur M. R 156 Hampden Park Dr. Tiffin Ohio Basic Inc. BRANT David G. RI 39 Valley View Tiffin Ohio Basic Inc. BRASHARES C. A. R Harbison Refractories Co. 1800 Farmers Bank Bldg Pittsburgh 22 Pa ROSTER 11 BRASSFIELD Henry C. E R.R. 1. Stevens Rd Foster General Electric Co. Ohio BRAUCKMANBRAUCKMANBRAUCKMAN Alvin J. 3 Kern Ramble Austin Texas PUN Gary A. 1827 1827 Alfred Y. te Kenneth J. W Wenczel Tile Co. Klag & Enterprise Ave. . Trenton N. J. BRAYKOVICAH. F. W Humphryes Manufacturing Co. 201 E. Fifth St. Mansfield Ohio Brazilian Ceramic Society Associacao Brasileira de Ceramica BREEDLOVE James G. BI 703 James Blvd. Signal Mountain Tenn American Lava Corp. BREENE George A. G Industrial Colloids Co. Emienton Pa BREEZE Lewis K. E 501 E. 288th St. Willowick Ohio Glascote Products Inc. BREITWIESER Robert H. R 1616 W. 27th Pueblo Colo Standard Fire Brick Co. BREKKE Trygve Box 266 Stavanger Norway Stavangerdint BREMNER Robert P. G T. L. Smith Co. 2835 N. 32nd St. Milwaukee 10 Wisc BRENNER Harold M. E B. F. Drakenfeld & Co. Inc. Washington Pa BRENNER R. F. GF Anchor Hocking Glass Corp. Lancaster Ohio BRESLICH Francis N. Jr. 3908 14th Ave. S. Seattle 3. 3 L. A. S 18 Theodan Dr. Pittsburgh NATCO Comp Wash 16 Pa BREWER Bob S Alamo Clay Products Co. Inc. Box 93. Elmendori Texas BREWSTER Gordon F. G 307 Ridge Road E. Williamson N. Y Bausch & Lomb Optical Co. BRIAN Charies W Paper Makers Importing Co. 44 Second St. Easton Pa BRIAN Dick W Inc. 422 Florida Ave. Chester W. Va Harshaw Chemical Co. BRIAN S. Douglas W Paner Makers Importing Co. S. Second St Easton Pa Inc. BRICKHOUSE Robert E. R 206 Fairlawn Blvd Zelienople Pa Manville BRIGGS MANUFACTURING CO A. J. Raible 415 W. Seymour Ave. Cincinnati 16. Ohio BRIGHAM Ralph V. Jr. WI Beef Rd R. R. 3. Syracuse 7. N. Y. Onondaga Pottery Co. BRINCKERHOFF J. E. R Babcock & Wilcox Co. 161 E. 42nd St. New York 17 N. Y. BRINDLEY George W. B Dept. of Ceramic Technology Pennsylvania State University University Park Pa BRINKMAN Robert J. 3209 Wayne Ave. Dayton 10 Ohio BRISBANE S. M. 40 Riverdale Rd Hawthorn E2 ctoria Australia ommonwealth Scientific & Industrial - Research Organization BRISTOW Robert H. WI 57 Sequoia Rd R. R. 1 Ballston Lake Y. General Electric Co. VOL 35 No. 10 1936 BRITCHER Gordon W 306 Berkeley Dr. Syracuse 10 N. Y. Syracuse Pottery Inc. BRITISH CERAMIC SOCIETY Federation House Trent England BRITTAIN Clifford G. RJ Autumn St. Worcester Mass Norton Co. BRITTON Marvin G. 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 Thermador Corp. BROSIUS John P. G 403 Emerson Ave. Aspinwall Pittsburgh 15 Pa Krieg Piston Ring Co. BROSKE William F. S Aircraft 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 Owens Glass Co. 1701 E. Broadway Toledo 5. Ohio BROWN Clarence B. Jr. M Hardinge Co. Inc. York Pa BROWN Colin C. G 21 Medbury Ave. Cuba Y. Cuba Cheese & Trading Co. BROWN Donald Nicoi G + E. Third St. Corning Y. Corning Glass Work BROWN Donovan P. RI 2704 Eldon Ave. Drexel Hill Pa North American Refractories Co. BROWN George L. M 27 S. Dien Ave. Ridgewood N. J. Lithium Corp. of America Inc. BROWN George Reuben M North American Mfg Co. 4455 E. 71st St 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 Trenton 5. N. J. BROWN Meredith C. S 609 N. Friends Ave. Whittier Calif Consultant BROWN Raymond G. R Strategic Processes Inc. Box 835 Niagara Falls N. Y. BROWN Raymond J. X Ceramic Age Chester Bldg Cleveland 14. Ohio BROWN Roy W. G 3842 Grennoch St Houston 25. Texas Carborundum Co. BROWN Wilbur F. GF Owens Glass Co. Rossford Ohio BROWN William E. R Box 217. R.R. 1. Norristown E. J. Lavino & Co. Pa BROWNE Thomas C. RI 2115 Orchard Dr. . South Plainfield N. J. Titanium Div National Lead Co. BROWNELL Wayne E. SI 126 Hornell St. Hornell N. State University of New York College of Ceramics BROWNEWELL George E. R Diamond Alkali Co. Box 430 Painesville Ohio BRUCHMANN Helmut M Haeger Potteries Inc. Dundee III BRUEGGERHOFF Charles R Mexican Zinc Co. N. Rosita Coahuila Mexico BRUHN Hans W. R Corbart Refractories Co. Inc. 1600 W. Lee St. Louisville 10 Ky BRUNNER Cedric D. W 106 W. Union Rockton Ill Ipsenlab of Rockford Inc. BRUNO Lucien V. S Guignard Brick Works Columbia S. C. BRUSH George D. SI Harrop Ceramic Service Co. 35 E. Gay St. Room 413 Columbus 15. Ohio BRUSSE William Jr. E Tenco Inc. 4104 Park Ave. Nashville 9 Tenn BRYANT Eugene E. EFI Ferro Corp. 4150 E. 56th St. Cleveland 5. Ohio BRYCE Homer L. S Henderson Clay Products Henderson Texas Box 870 BUCHAN Charles R. 840 Techwood Dr N. W. Atlanta Ga BUCHAN M. A. RI A. P. Green Fire Brick Co. Troy Idaho BUCK Forrest W. Jr. E 1209 Loucks Ave. Scottdaie Pa Lithium Corp. of America BUCK GLASS CO Royden A. Blunt 841 E. Fort Ave. Baltimore 30 Md BUCK Ivan E Jr. E 300 Greenwood Ave. R. R. 2 Cape May N. J. Keasbey Corp. BUCKLES Paul E. MI 360 Brighton Blvd. Zanesville Ohio Donald Hagar Ceramic Materials BUCKLEY Edward D. B Champion Spark Plug Co. 900 Upton Ave. Toledo 1 Ohio BUCKNER O. S. GI Bay State Abrasive Products Westboro Mass Co. BUEGE Robert H. W Union Inc. 900 E. Keefe Ave. Milwaukee 1. Wisc BUEHLER Bert P. S 2439 Torrington Ave Parma 29 Cleveland Builders Supply Co. BUESSEM W. R. B Pennsylvania State University College of Mineral Industries University Park Pa Ohio : BUFFALO POTTERY INC R. E. Gould 25 Hayes Pl 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. Drakenfeld & Co. Inc. Washington Pa BULLARD Keith GJ 3518 Hungnam Pl Tarawa Terr 2. N. U. S. Marine Corps ROSTER 13 LLOCK Gordon University of Birmingham Dept. of Physical Metallurgy Edgbaston Birmingham 15 England NGE Fred H. M M. Hanna Co. Research Lab ing Minn Oscar G. GF Owens illinois Box 1035 1036Toledo 1. Chio RCHENAL Charies H. W Cambridge Tile Mfg Co. Box 71 Cincinnati 15 Ohio RCHFIEL B. M. RFI 4458 Rosewood Pl Riverside Calif Consulting Engineer RCHFIELD Paul E. G Wyandotte Chemicals Corp. 1609 Biddle Ave Wyandotte Mich RDICK Milton D. WFI National Bureau of Standards Engineering Ceramics Section Washington 25. D. C. RDICK Sidney D. G 104 Argonne St. Corning N. Y. Corning Glass Works RGESS Blandford C. MF USOM APO 928 San Francisco Calif JRKE J. E. B General Electric Co. Research Lab Schenectady N. Y. JRKE L. Roger R 1203 Peoples Bank Bldg Pittsburgh 22. Pa Chas Taylor Sons Co. JRKERT John G. Jr. 84 Green St. Valley Stream N. Y. JRKHALTER Edward SI 7219 Interiaaken Dr. Tacoma 99 Wash Builders Brick Co. JRKS Cecil M. RI 705 Broadway Steubenville Ohio Weirton Steel Co. VP" EY Frank N. W Humphryes Div Warner Corp. Mansfeld URLEY Newton Ray W 1864 Dresden Rd Zanesville Ohio Ohio Burley Clay Products Co. URLINGAME Howard G. E California Metal Enameling Co. 6904 E. Slauson Ave. Los Angeles 22. Calif URNAND Guy M. Life Messrs Johnson Matthey & Co. Ltd. 78 Hatton Garden London E. C. 1. England URNS Frederick L. W 400 Grandview Dr. Highland Village Zanesville Ohio Watt Pottery Co. URNS Henry K. Jr. S 1620 Waverland Dr. Macon Ga Burns Brick Co. URNS Joseph A. Jr. M Joseph A. Burns & Son 124 Harrison Ave. Avalon Pittsburgh 2 Pa URNS R. S. E Armco Steel Corp. Research Library Middletown Ohio URRISS William K. G Consolidated Feldspar Dept. International Minerals & Chemical Corp. 20 N. Wacker Dr. Chicago 6. Ill URROUGHS F. H. W Box 1329. Trenton 7. N. J. Star Porcelain Co. URTON Howard B. G 1618 Arlington Ave. St. Paul 17 Minn Minnesota Mining & Mfg Co. Y DN W. A. S 3 E. Fourth St Mt. Pleasant Texas Paris & Mt. Pleasant R. R. BURWINKEL Lawrence G. Jr. G Pennsylvania Glass Sand Corp. Two Gateway Center Pittsburgh 22 Pa VOL 35 No. 10 1956 BUSH Edward A. 200 Washington Ave. Vandergrift Pa BUSH James W. SI 4550 Delhi Rd Cincinnati 38 Obio Natco Corp. BUSH Ralph R. M 520 McKinley St. North Canton Ohio Bonnot Co. BUSH W. G. & CO John S. Herbert 174 Third Ave. N. Nashville 3 Tenn BUSHONG R. M. R National Carbon Co. Tiffin & Town Sts Fostoria Ohio BUSSEY Donald A. R Kaiser Aluminum & Chemical Corp. Refractories Plant Moss Landing Calif BUSTEED Donald J. RI 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 BUTKOVICH Edward M. R 2848 E. 97th St. Chicago 17 III Armour Research Foundation BUTLER F. W. W Akron Porcelain Co. Akron 14 Ohio BUTLER Thomas J. Jr. S Box 279 Austin 62 Texas 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 Bell Pine & High Sts Heath Co. Plymouth Ohic BYRNS Alva C. R Kaiser Aluminum & Chemical Corp. 1924 Broadway Oakland 12. Calif C CABANILLAS Oscar Gonzalez S Puerto Rico Clay Products Corp. Box 4729 San Juan Puerto Rico CABLE John A. W 1011 22nd St. N. E Canton 4 Ohio 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 St Niagara Falls N. Y. CAHOON John B. Jr. W 791 McLeod St. Livermore Calif University of California 1 CAIN Robert W. 603 W. Church St. Champaign Ill CAITO A. M. RI Basic Inc. Maple Grove Ohio CALA Charles F. G 144 Hoover Rd Rochester 17 N. Y. Bausch & 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. G 717 Newberry Rd Nashville Ford Motor Co. CALDWELL Smiley M. III 717 Newberry Rd Brook Meace Subdivision Tenn Nashville Tenn CALDWELL William D. EI Perfection Industries Inc. 1135 Ivanhoe Rd Cleveland 10 Ohio CALLAHAN H. D. WFD United States Ceramic Tile Co. East Sparta Ohio CALLAHAN Robert M. 4553 Sev^...le Ave. B Los Angeles 58. Calif Solar Mfg Co. CALLINAN Edward E. RFI DeKalb Park Center Square Alan Wood Steel Co. CALVA Roberto 3 3238 E. Second St Wichita Pa 3. Kans : Boeing Airplane Co. CAMERON David G. M Haller 684 Ann Arbor Rd Plymouth Mich CAMERON Robert A. G Corning Glass Works Corning 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 S Wash . CAMPBELL G. Donald G 621 Shelby St Shelbyville Ind Pittsburgh Plate Glass Co. CAMPBELL Ian B California Institute of Technology Div of Geological Sciences 1201 E. California St. Pasadena 4. Calif CAMPBELL J. Douglas W Lithium Corp. of America Inc. 540 Lincoin Bldg 60 E. 42nd St. New York 17. N. CAMPBELL Robert .. Jr. B University of Washington 324 Roberts Hall Seattle 5. Wash CAMPBELL Rober M. WFD Alfred Y. State University of New College of Ceramics CAMPBELL Tom W. R Box 303 Poland Ohio Electro Refractories & Abrasives Corp. York CAMPBELL Van E. W 363 Highland Ave. Wadsworth Ohio Ohio Brass Co. CAMPOS F. Torres Fabrica Nacional de Vidrio C. A. Box 1049. Caracas Venezuela CANADIAN CERAMIC SOCIETY Miss L. C. Keith 49 Turner Rd Toronto 10 Ont Canada CANFIELD J. J. EF 2909 Orlando Dr Middletown 20 Ohio Armco Steel Corp. CANNING Robert G 202 Fox Chapel Rd Pittsburgh 38 Pa Pittsburgh Plate Glass Co. CANNON John D. 2167 Highview Rd S. W. Atlanta 11 Ga : CAPEK Raymond G. 2646 S. Clarence Ave. Berwyn Ill CAPELLMAN John J. R 1118 Highland St. Tarentum , Pa Pittsburgh Plate Glass Co. CAPPS Hubert Jr. S R.R. 1. Coffeyville Kans Ludowici Co. CAPPS Webster G National Bureau of Standards Washington 25 D. C. ROSTER 15 RBORUNDUM CO H. C. Martin Bufalo Ave. Niagara Falls Y. RDER Frederick Honorary GF Corning Glass Works Vycor Div Corning N. Y. REY J. Sheldon D " t of Design University of Kansas K 628 jence Kans , George F. S. Seminole Okmulgee Okla RL John E. GD Corning Glass Works Box 544. Corning N. Y. RLSEN Frederick L. Jr. Box 628. Georgia Tech Atlanta RLSON Joseph A. S 50 Hawthorne St. San Francisco 5 Calif Kraftile Co. RLSON Robert H. W Universal Corp. Box 960. New Castle Pa Ga RLSON William G. RI 175 Glenfield Dr. Pittsburgh 35 Pa Westinghouse Electric Corp. RLYLE EdwarCd. S Box 128 Ironton Ohio Cariyle Tile Co. RNAHAN Thomas D. MI B. F. Drakenfeld & Co. Inc. Box 519 Washington Pa RNES Kenneth C. G Toledo Engineering Co. Inc. 3001 Syivania Ave. Toledo 13 Ohio RNIGLIA Stephen C. B Food Mach & Chemical Corp. 161 E. 42nd St. New York 17 N. .RO Robert M Hedi Schoop Art Creations North Hollywood Calif Box 384 ROTHERS Harry S. M H. Spinks Clay Co. Inc. -cinnati 1000 First National Bank 2. Obio HERS R. 3. MF Bldg Clay C. Spinks Box 829 Paris Co. Inc. Tenn ROTHERS Richard B. Jr. M H. Spinks Clay Co. Inc. Box 829. Paris Tenn AROTHERS T. E. M Gladding McBean & Blvd. Co. Los Angeles 39 Calif ARPENTER F. Scott Jr. W White Pigments Division Godfrey L. Cabot Inc. 77 Franklin St. Boston 10. Mass ARPENTER Woodrow E Barrows Porcelain Enamel Corp. Langdon Rd & Penn R. R. Cincinnati 13. Ohio LOWREY GLASS CO Norman R. Beck Baltimore 3 Md ARROLL Jerry W. WJ 417 S. Western Ave. Kokomo Ind American Radiator & Standard Sanitary Corp. ARROLL William F. W 3499 McNally Ave. Altadena Calif Florence Ceramics Co. ARRUTHERS John L. SFI Lord Hall Ohio State University Columbus 10. Ohio ARTER D. R. M Picher Co. American Bldg Cincinnati 1 Ohio ARTER F. B. WI Tiffin 12 Ohio American ,- ER George J. Corp. 02 20th N.E. Seattle 5 Wash A. ER Gerard T. W Oakland St R.R. 1 Box A Mattapoisett Mass Dubilier Electric Corp. OL 35 No. 10 1956 CARTER Herbert D. WF 3351 Dorchester Rd Shaker Heights 20 Ohio Harshaw Chemical Co. CARTER J. Guild M Eureka Feldspar Mining & Milling Co. Inc. 190 W. State St. Trenton 8. N. J. CARTWRIGHT S. V. SI 1224 Victoria Ave. Corona Calif Jordan Tile 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 Ill 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 Patterson Foundry & Machine Co. CAYFORD James M. EI 1317 Ridge Ave. Steubenville Toronto Paperboard Co. Ohio CECIL Gowan L. W Lone Star Ceramics Co. Box 14215 Dallas 34 Texas CECIL Paul S. E Service Porcelain Enamel Inc. Brill & Christie Sts Newark 5. N. J. CENTRAL SILICA CO E. C. Sawyer 806 Market St. Zanesville Ohio CERAMIC ASSOCIATION OF JAPAN Yogyo Kyokwai 7. Sakuragawacho Minato Tokyo Japan CERAMIC COLOR & CHEMICAL MFG CO W. F. Wenning Box 297. New Brighton Pa CERAMIQUE MAASTRICHT N.V. Comte L. de Meeus d'Argenteuil Hoge Barakkenstraat 6 Maastricht Netherlands WF CERMAK Frank 1542 Union St.Schenectady 9 Y. CERNY Joseph J. E 5226-28 W. 26th St. Chicago 50 Cicero Ill Resistors Inc. CERVILLI Nicholas F. 73 Forest Ave. Caldwell N. J. CHADEYRON A. A. G. Cleveland Magnesite & Refractory Co. Ltd. Normanby Brickworks Normanby Middlesbrough York England CHAI 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. EI 1026 Middlesex Rd Baltimore 21 Md Pemco Corp. CHAPMAN G. Marsh Harshaw Chemical W Co. 6265 Wiche Rd Cincinnati 13. Ohio CHARBONNIER William P. R Walsh Refractories Corp. 101 Ferry St St. Louis 7. Mo. CHARLAND Tel L. RI 317 W. Kerr Dr. Midwest City Okla Phillips Petroleum Co. CHARLTON Alex E. W Photoceramics Inc. 1822 Western Ave. Cincinnati 14. Ohio 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 Ill CHASE Harry K. R 4040 Lakeshore Ave. Oakland Calif Western Refractories Co. CHATTAHOOCHEE BRICK CO Paul M. Clark Chattahoochee Ga CHATTANOOGA GLASS CO Joe G. Venable Chattanooga 10 Tenn CHAUMEIL Frederic Verreries de Bagneaux et Appert Ferres Bagneaux Loing Seine et Marne France CHEN Louis Y. L. 462 Beacon St. Boston 15 Mass CHESS James S. G Pittsburgh Plate Glass Co. One Gateway Center Pittsburgh Pa CHESTERS John H. F United Steel Companies Ltd. Research & Development Dept. Swinden Laboratories Moorgate Rotherham Yorks England CHICAGO POTTERY CO J. S. Clifford 1920 Clybourn Ave. Chicago 14 Ill CHICAGO VITREOUS CORP William Hogenson 1425 S. 55th Court Cicero 50. H. CHILCOTE Joseph H. R 1907 16th St. N. Arlington 1. Va Ships Bureau of Navy Dept. CHILD James L. Jr. S Hancock Brick & Tile Co. Box 450 Findlay Ohio CHILDS Clayton G. B 2257 N. York St. Owensboro General Electric Co. Ky CHILDS Edwin E. Jr. E 1604 Greenspring Dr. Lutherville Md Pemco Corp. CHILDS Gary D. Box 826 Alfred N. Y. CHING Tung Rey J 31 Soares Ave. Grd Fir Kowloon Hong Kong Feng Enamelling Co. H.K. Ltd. CHIOCHETTI Vincent E. J. G Box 67 West Clarksville N. Y. Bausch & Lomb Optical Co. CHISHOLM BOYD & WHITE CO Robert A. Ebersole 610 W. 57th St. Chicago 21 Ill CHORMANN O. I. E ' 195 Gregory Hill Rd Rochester 20 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 & The Faience Manufactory Aluminia Smallegade 45 Copenhagen F. Denmark ROSTER 17 CHRISTIE Leonard D. Jr. R 343 Sound Beach Ave. Old Greenwich Conn Babcock & Wilcox Co. CHRISTMAN Brian B. W 25 Eggert Ave. Metuchen N. J. Rheem Manufacturing Co. RISTMAN C. E. E Federal Enameling & Stamping Co. Pittsburgh | CHRISTMAN 1514 11th Pa H. M. RI St. N.E. Massillon Ohio $ Massillon Refractories Co. CHRISTOPHER A. B. S Chambers Bros. Co. 52 & Media Philadelphia 31 Pa CHU Gordon P. K. E Research Laboratory Pfaudler Co. 1000 West Ave. Rochester 3 N. Y. CHUN Lee 11 Magnolia Rd Yau Yat Chuen Kowloon Hong Kong CHUTTER George A. M Middie Haddam Rd Portland Conn Giobar Div Carborundum Co. CIA MEXICANA DE REFRACTARIOS A. P. GREEN S. A. H. Fetter Hamburgo 1 Apartado Postal 71 Bis Mexico D. F. CICHOWSKI V. J. E Fusite Corp. 6000 Fernview Cincinnati 13. Ohio Ave. CINCINNATI MILLING PRODS DIV CINCINNATI MILLING MACHINE CO Hayward A. Gay 4701 Marburg Ave. Cincinnati 9 Ohio CLARE Robert L. SFI 212 Rector St. Perth Amboy N. J. Larede Corp. of New Jersey CLARK Alec W. Beatson Clark & Co. Ltd. Rotherham York England CLARK Arthur R. B Box 352. Far Hills N. J. Foxlyn Laboratories CLARK C. Burton B 766 Meadowcrest Dr. ttsburgh 28 Pa Harbison Refractories Co. CLARK Daniel J. S Vitro Mfg Co. 60 Greenway Dr. Pittsburgh 4 Pa CLARK Horace N. R Refractory & Insulation Corp. 120 Wall St New York 5 N. Y. CLARK James L. S 150 Yates St. Denver Colo Robinson Brick & Tile Co. CLARK John D. XI 656 Lindley 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 Fire Brick Co. Mexico Mo. LARKE Ford K. G Philco Corp. Church Rd Lansdale Pa LARKE James A. Bilston Foundries Ltd. . Highfields Bilston Staffs England CLAUS Karl M. W Mosaic Tile Co. Pershing Rd Zanesville Ohio LAY Wilfred E Kaiser Metal Products Radcliffe St. istal Pa BURN CO LTD K. M. Hungerford 850 W. Hastings St. Vancouver 9. B. C. Canada OL 35 No. 10 1956 CLAYCRAFT CO Phillip W. Tefft Box 866 Columbus 16 Ohio CLAYPOOLE Stewart A. G R.R. 2 Painted Post 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 Arcrods Corp. CLEMENS Eugene C. SFI Cannelton Sewer Pipe Co. Cannelton Ind CLEVELAND George B. B California Div of Mines 217 W. First St. Los Angeles 12 Calif CLEVELAND MUSEUM OF ART William M. Milliken Cleveland 6 Ohio CLEVELAND Theodore K. G Philadelphia Quartz Co. of California Sixth & Grayson Sts Berkeley 10 Calif CLEVENGER Thomas R. . Massachusetts Institute of Tech Rm 001 Cambridge Mass CLEVER William R. G 401 N. Elm St. Lincoln Ill Pittsburgh Plate Giass 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 England CLIFFORD J. S. W Chicago Pottery Co. 1920 Clybourn Ave. Chicago 14 III CLINE I. R. S Western Brick Co. Danville III CLINE Robert W. WI 377 Main St. East Aurora N. Onondaga Pottery Co. CLIPPER DIAMOND TOOL CO INC Joseph Klipper 345 Hudson St. New York 14 Y. CLOSE Barbara S. 36 Lenox Pl Middletown Y. CLOSE Paul G Illincis Box 1035-6 Toledo Chio 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 Tenn 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 Miamisburg Frigidaire Div General Motors Corp. Ohio 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 King Ave. Columbus , Ohio COFFIN Leon B. W Andover N. Y. Alfred University COGEN Sau S Davidson Brick Co. 4701 Floral Dr. Los Angeles 22 Calif COGHILL H. T. X 2023 Collingswood Rd Columbus 21. Ohio Refractories Div Carborundum Co. COHEN Aaron S Box 405 Willamina Ore Willamina Clay Products COHEN Alvin J. G Mellon Institute 4400 Fifth Ave. Pittsburgh 13 Pa COHEN Arthur E. G Sylvania Electric Products Inc. Cottage Place Mineola Y. COHEN Bernard G 130 Spruce Wood Geneva N. Y. Sylvania Electric Circle Products Inc. COIN R. H. E 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. Percy G Dominion Glass Co. Ltd. Box 190 Montreal Que Canada COLE Harold R. R National Carbon Co. Town St. Fostoria Ohio COLE Sandford S. BFI Titanium Division National Lead Co. Research Dept. Box 58 South Amboy N. J. COLE Sandford S. Jr. RI Power Tube Div Raytheon Mfg Co. Waltham 54 Mass COLEMAN Bruce G. J & AP Scott L Box 209 Dunedin New Zealand COLEMAN Caruthers A. S Big Run Ccal & Clay Co. 133 N. Limestone St. Lexington Ky COLEMAN C. G 3746 Maoleway Dr. Toledo 14. Ohio Kimble Glass Co. COLEMAN Rober L. SI 20631 Greenwood Olympia Fieids Ill Chicago Brick Co. COLEMAN Thomas B. S 635 Tarboro St. Rocky Mount N. C. Nash Brick Co. Inc. COLLIER Roger E. Glenwood Park Apts Apt 1 2605 Oak St. Chattanooga Tenn COLLINS G. Pittsburgh Henryetta F. G Plate Glass Okla Co. Box 750 COLLINS Paul F. WI a Austenal Inc. 7001 S. Chicago Ave. Chicago 37 III COLLINS William G. BI Manville Corp. Waukegan Ill COLONIAL INSULATOR CO Frank Mason 945 Grant St. Akron 11 Ohio COLOSKY Benjamin P. School of Ceramics Rutgers University New Brunswick N. J. COLUMBIA FIRE BRICK M. L. Hamaker 612 First National Bank Canton 2. Ohio CO Bldg SOUTHERN CHEMICAL CORP R. W. Miller One Gateway Center Pittsburgh 22 Pa COMEFORO J. E. W Frenchtown Porcelain Co. Frenchtown N. J. ROSTER 19 MER Richard L. W 6161 Springdale Blvd. Grand Blanc Mich A C Spark Plug Div General Motors Corp. MMERCIAL DECAL INC Alfred Duhrssen Box 759 Liverpool Ohio RCIALORES INC , .bert R. Eckel Clover C. IMMONS Charles H. Jr. WFI Forest Lane R. R. 2 Malvern Pa Foote Mineral Co. MPAGNUCCI Julius P. W Bay Ridge Specialty Co. Inc. Stokes Ave. Trenton 10 N. J. MPANHIA PAULISTA DE MINERACAO Eduardo C. Simonsen Caixa Postal 3.008 Sao Paulo Brazil ONARD John B. S 600 Hawthorne Lane Mansfeld Ohio Richland Shale Brick Co. ONDON Edward U. G 6604 Waterman Ave. St. Louis 5 Mo. Consultant ONE Carroll G 1387 Virginia Ave. Columbus 12 Ohio E. I. du Pont de Nemours & Co. NLEYJames M. 363 N. Transit St. Lockport N. Y. NNWilli M. G 6312 Indiana Ave. Kansas City 30 Mo. Consultant ONNELL George A. B Pacific Coast Borax Co. Box 9128 Station S. Los Angeles 5 Calif ONNELLY Daniel S. R 2801 N. Park Blvd. Cleveland Heights 18 Ohio Ohio Crankshaft Co. ONOVER Ray C. RI Gladding McBean & Co. 1006 Alcalde Way Glendale 7 Calif ONRAD Charles E Jr. G ... ^ wens Glass Co. 4273. Charleston 4 W. Va . AD Keith G Owens Illinois Box 1019. Oakland 4 Calif ONROE Barden A. G 93 Gorton St. Corning N. Y. Corning Glass Works ONSOLIDATED FELDSPAR DEPT INTERNATIONAL MINERALS & CHEMICAL CORP William K. Burriss 20 N. Wacker Dr Chicago 6. Ill ONSOLIDATED GLASS WORKS LTD I. Donen Box 562 Germiston Transvaal South Africa ONSUMERS Glass Co. LTD John N. Jordan Box 456 Station B Montreal Que Canada ONTARDI William A. WI 206 Highland Ave. Metuchen N. J. Automatic Mfg Co. ONWAY Myron J. W 943 Orchard St. Zanesville Ohio Mosaic Tile Co. COOK A. W. Hargreaves Mill Ltd. Botteslow St. Hanley Stoke England OOK Eugene M. G 509 Broadlawn Terrace Vineland N. J. Kimble Glass Co. COOK Herman L. EF 1555 Beardsley Ave. Muskegon Mich ' Norge Div Warner Corp. COOK Leslie J. M 1621 Reliez Valley Rd Lafayette Calif Leslie Cook Laboratories JOOK Louis S. 85 Highland Dr. Alt Lake City 7. Utah ___ COOK Ralph L. EFI 204 Ceramics Bldg University of Illinois Urbana Ill Vol 35 No. 10 1956 COOK W. Howard R Box 131 Norris Tenn United States Bureau of COOKE Charles C. G 2858 S. 109th St. Toledo Mines 11 Ohio Illinois COOKE David C. WI 25 Chestnut St. Haddon eldN. J. Universal Corp. COOKE Robert S. E Industrial Centre # Quebec Que Canada Crane Steelware Ltd. COOKE William C. G Blue Ridge Glass Corp. Kingsport Tenn COOMBS W. M. G Owens Bridgeton Plant No. 14 Bridgeton N. J. COOPER Alfred R. G 45 Orchard St. Jamaica Plain Mass Emhart Mfg Co. COOPER George I. W Mackley Apts Philadelphia 24 Pa Signal Corps Supply Agency COOPER Joseph Knoxville Tioga County Pa COOPER Roger C. E Fusite Corp. 6000 Fernview 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 & Sons Ltd. Spode Works Stoke England CORBAN Wilbur H. W 3198 Dresden Rd Zanesville Ohio Ceramic Supply Co. CORBMAN Mitchell S New Jersey Shale Brick & Tile Corp. Box 249 Somerville N. J. CORSMAN Morriss S New Jersey Shale Brick & Box 249 Somerville N. J. Tile Corp. CORDES John E. WI 5333 Humboldt Ave. S. Minneapolis 19 Mina 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 Corning N. Y. CORNISH Frank L. G Corning 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 Juan Puerto Rico CORSON Robert GJ 90 Cayuga St. Seneca Falls N. Y. Sylvania Electric Products Inc. CORWIN Rudolph E. B Applied Physics Laboratory University of Washington 1013 E. 40th St. Seattle 5 Wash COSTELLO R. E. R Zeller Corp. Fort Wayne Rd Defiance Ohio COTHRAN Lawrence Box 2859 Clemson College Sta Clemson S. C. COTTON Nige Elijah Cotton Ltd. Nelson Pottery Hanley Trent Stafford England COUCH Albert H. RFI Libbey Glass Co. 1701 E. Broadway Toledo 5 Ohio COUGHANOUR L. W. 3 4094 Ben Lomond Dr. Palo Alto Calif General Electric Electric Microwave Lab COULTER William G. M 4824 Meadowlane W. Canton Ohio Pemco Corp. COUNTS William E. B 1422 W. Home Ave. Flint Mich A C Spark Plug Div General Motors Corp. COURI Richard A. G Box 109 South Woodstock Conn American Optical Co. COURT G. Robert E 936 Hawthorne La Kankakee Ill A. O. Smith Corp. COURTER R. F. M Globar Div Carborundum Co. Niagara Falls N. Y. COURTNEY Seart J. M B. F. Drakenfeld & Co. 45-47 Park Pl New York 7 N. COUTANT Edward R. G General Electric Co. 1285 Boston Ave. Bridgeport 2 Conn COVAN H. E. M R. R. 3 Box 10 Bryan Texas Orton Foundation COWAN J. G. Roselands Billington Haughton Staff England Universal Grinding Wheel Co. COWAN R. Guy DF 416 Brooklea Dr. Fayetteville N. Y. Onondaga Portery Co. COWAN Robert E. BJ Westinghouse Atomic Power Div Box 1468 Pittsburgh 30 Pa COWELL J. Robert Robert Jr. G Woodville Lime Products Co. ; 2140 Jefferson Ave. Toledo 2. Ohio COWLES Robert J. W Quality Components inc St. Marys Pa COWLES Roderick J. R Walworth Co 300 E. First St. South Boston 27 Mass COWLING Kenneth W. 79 Norwood Rd Sheffield 5 England Thos Marshail & Co. Ltd. COX Edwin H. E 20111 Wickfeld 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 Durham England COY John Joel E 1689 Victoria Park Ave. Apt 410 Scarborough Ont Canada Frigidaire Products of Canada Ltd. CRAFT R. S. R Findlay Clay Products Co. Washington Pa | CRAIG Bruce G. E 4520 N. 148th Milwaukee Wisc : A. O. Smith Corp. CRAIG David M. Jr. G Pittsburgh Plate Glass Co. One Gateway Center Pittsburgh 22. Pa ROSTER 21 RAIG James W. RF Canadian Refractories Ltd. 540 Canada Cement Bldg Montreal 2 Que Canada RAIG John D. Jr. W 14 Emerald La Levittown Pa Nitro Mfg Co. R W. E. WFI _ustrial Ceramic Products Inc. 965 W. Fifth Ave. Columbus 8 Ohio RANDALL Eugene R. RI 253 Gulf St. Milford Conn Mullite Refractories Co. LANDALL James R. EI 4514 Chestnut St. Bethesda 14 Md National Bureau of Standards RANDALL William B. RI Box 707 Alfred N. Y. O.N.R. Research Project RANDON A. S. G American Window Glass Co. 20th Floor Farmers Bank Bldg Pittsburgh 22 Pa RANE CO CHATTANOOGA DIV W. M. Hamilton 33rd and Alton Park Blvd. Chattanooga 1 PACIFIC 330 W. Citrus Tenn CO Arthur St. Colton E. E. Hoch Calif RAVEN Henry E. R Davison Chemical Co. Div of W. R. Grace & Lake Charles La Co. Box 885 RAWFORD George E. WFI 221 Sumner Ave. New Castle Pa Universal Corp. RAWFORD George S. M University of British Columbia B. C. Research Council Vancouver 8. B. C. Canada RAWFORD J. C. Jr. R Manville Sales Corp. 22 E. 40th St. New York 16 N. Y. RAWFORD J. L. RFI 4 Foothill Rd ta Barbara Calif REJON Waiter F. R Babcock & Wilcox Co. 1040 National City Bank Cleveland 14 Ohio Bldg RESS William C. SI Carolina Ceramics Inc. R.R. 3 Columbia C. RESSY Morton G Emhart Manufacturing 333 Homestead Ave. Co. Hartford 2. Conn RIDER Paul H. E 1993 Butler Dr Turtle Creek Pa United States Steel Corp. RISPINO Joseph C. R Corning Glass Works Corning N. Y. . A. CRISTALERIAS DEL URUGUAY Francisco J. Gercar Comercio 1491 Montevideo Uruguay ROCKETT William E. X 1215 N. Arlington Ave. Indianapolis Ind Sales Engineer RONIN Leo J. R Raytheon Manufacturing Co. Foundry Ave. Waltham 54 Mass RONINGER George J. M A. J. Wahl Inc. 8 Central Ave. . Brocton N. Y. ROOK Charles Edmund W Los Angeles Chemical Co. 4545 Ardine St. South Gate Calif ROOKSTON James A. RI 1224 E. Jackson St Mexico Mo. P. Green Fire Brick Co. ma KSVILLE CHINA CO Harry J. Bennett Crooksville Ohio ROOM Henry C. SJI 893 Boulevard Macon Ga Burns Brick Co. TOL 35 No. 10 1956 CROSBY Donald P. RI Harbison Refractories Co. Fulton Mo. CROSKEY Carl D. W 208 Rollingdale Rd Catonsville 28. Md Insulator Dept. General Electric Co. CROSS A. H. B. Brown Research Lab Princess St. Sheffield 4. York Engiand CROSS Charles D. S 1203 Ninth Ave. Jasper Ala Natco Corp. CROSSAN W. A. S Metropolitan Brick Inc. 1017 Renkert Bldg Canton 2 Ohio CROSSLEY MACHINE CO 301 Monmouth St. Trenton 9 N. 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. B 365 Forest Rd South Orange N. J. Henry L. Crowley & Co. Inc. CROWLEY Michael S. I Pennsylvania State University Dept. of Geophysics & Geochemistry 223 Mineral Sci Bldg University Park Pa CRUIKSHANK C. L. M Great Lakes Foundry Sand Co. 720 United Artists Bldg Detroit 26. Mich CUMMINGS J. M. M British Columbia Cement Co. Ltd. B. C. Cement Bldg Victoria B. C. Canada CUMMINS Arthur B. B Morning Glory Rd Bound Brook N. J. Manville Corp. CUMMINS Robert K. G General Electric Co. 1133 E. 152nd St. Cleveland 10 Ohio CUNLIFFE J. A. S 266 Seventh St. Medicine Hat Alta Canada Medicine Hat Brick & Tile Co. Ltd. CUNNINGHAM James A. S Adams Clay Products Co. Box Martinsville Ind 226 CUNNINGHAM Robert J. G Clark Ave. R.R. 5. Newark Ohio Corning Fiberglas Corp. CUPIDRO Vincent N. W 2204 Kirchoff Rd Arlington Heights III Radio Materials Corp. CURCIO Anthony L. WI 21 Church St. Bound Brook 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. 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. CURTIS William H. Jr. EJ 1424 Monte Sano Ave. Augusta Ga U. Army CURTS R. M. G American Potash & Chemical Corp. 99 Park Ave. New York N. CUSICK Charles S. G Pittsburgh Plate Glass Co. Wks 4. Ford City Pa CUTHILL John R. E Enameled Memis Section National Bureau of Standards Washington 25 D. CUTLER Ivan B. B 220 Mines Bldg University of Utah Salt Lake City 12 Utah CZARNECKI Kamil B. 29 Whitehail London S. W. 1 England Aglite Ltd. CZECHOSLOVAK CERAMIC AND GLASS SOCIETY R. Barta Technicka ul.c.5 Praha XIX Czechoslovakia D D'ADRIAN Vincent L. D. G Mississippi Vailey Research Lab 901 S. 18th St St. Louis 3 Mo. Inc. DAGER Probert W. MFI 5628 Greenbush Van Nuys H. C. Spinks Clay Co. Calif DALE Alfred J. Johnson Bros. Hanley Trent England Ltd. DALEY Frank E. M Godfrey L. Cabot Inc. 46 Bayard St. New Brunswick N. J. DALTON Robert H. G 234 Delevan Ave. Corning N. Y. Corning Glass Works DAMERON Joseph J. S Coates Co. Box 935 Austin Texas DANIELSON R. R. EFI 120 Richmond Terrace Rahway N. J. Metal & Thermit Corp. DANK Milton G Illinois General Research Div Toledo , Ohio DANKS William H. G 216 Mississippi Ave Crystal Pittsburgh Plate Glass Co. City Mo. DARBY George M. M 61 Washington Ave. Oliver Inc. Westport Conn DARLING D. G. S Toronto Brick Co. Ltd. 425 Bayview Ave. Toronto 17 Ont Canada DARNELL Harmon C. S Murray Tile Co. Inc. Cloverport Ky DARRAH W. A. E 901 N. Oak Park Blvd. Oak Park III Continental Industrial Engineers Inc. DAS GUPTA A. K. W soe Bradley Co. 136 W. Greenfield Ave. Milwaukee 4 Wisc DAUMKE 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 Brass Co. Ltd. Niagara Falls Ont Canada DAVEY Frederick K. B Carborundum Co. Niagara Falls N. DAVIDSON Robert North American Y. W. R Refractories Co. Curwensville Pa ROSTER 23 DAVIES Chester A. WT Park Lake Ave. Titusville N. J. American Radiator & Standard Sanitary Corp. AVIES Edward G. G Dominion Glass Co. Ltd. Wallaceburg Ont Canada ) S. Thomas H. G Allon Institute 4400 Fifth Ave. Pittsburgh 13 Pa DAVIS Earl K. G Bausch & Lomb Optical Rochester N. Y. DAVIS FIRE BRICK CO Co. Oak Hill Ohio AVIS Harry E. WFI Universal Potteries Inc. Cambridge Obio AVIS HI M. E Pennsylvania State University Mineral Industries Bldg University Park Pa AVIS James K. G 144 High Rd Corning N. Y. Corning Glass Works AVIS John A. Sr. W . Sentry Sanitary Corp. Box 427. Mannington W. Va AVIS N. 3. M 77 Metcalfe St. Rm 205 Ottawa 4. Ont Canada Canadian Flint & Spar Dept. AVIS Sam H. Jr. W 808 N. Howard Robinson Ill Case Mfg Corp. AVIS William A. G 1421 Second St. M. R Tarentum Pa Pittsburgh Plate Glass Co. AY Arthur L. Honorary G 9113 Old Georgetown Rd Bethesda 14 Md AY Britton T. R American Fire Clay & Products Box 157. Canneid Ohio Co. AY Charles M. R Ney Dolomite Corp. m 902 915 Olive St. w.. Louis 1. Mo. AY Deibert E. 1003 Park St Roila Mo. AY Frank Jr. M Corning Glass Works Corning N. Y. AY Jack F. WI United States Ceramic Tile Co. Fourth & Walnut N. E Canton Ohio AY Loren L. GJ 2401 N. Mesa Apt 4. El Paso Texas Pittsburgh Plate Glass Co. AY Ralph K. GFI Lihhey Glass Co. 1701 E. Broadway Toledo 5 Ohio AY Robert B. SI 18 Lynnwood Dr. R. R. 3. Morris III Morris Clay Products Co. EADERICK James W. B 1011 Norvell Dr. Signal Mountain Tenn American Lava Corp. EADWYLER Earnest W. RI 2599 Glenmawr Ave. Columbus 2. Ohio United States Army EAN Estus R. BJ 1416 Tahor Ave Dayton 10 Ohio National Cash Register Co. CAR Paul S. BFI Virginia Polytechnic Institute Box 205. Blacksburg Va I BECK Hubert O. M 5105 Belmont Apt 3. Houston 5 Texas Baroid Div National Lead Co. IBENHAM W. S. RFI Tited States Steel Corp. William Penn Pl - burgh 30 Pa ECKER Alfred R. W 811 N. Seventh St Cambridge Ohio Champion Spark Plug Co. L. 35 No. 10 1956 DECKER Edgar A. M G. S. Robins & Co. 126 Chouteau St. Louis 2. Mo. DECKER Edward L. WI Summer St. Williamstown Mass Sprague Electric Corp. DE COURSEY Donald T. E 57 Prospect Park South West Brooklyn 15 Y. DEETH H. R. M American Nepheline Ltd. 25 King St. W. Rm 2530 Toronto Ont Canada de FELICE Ralph D 28 Shore Cliff Pl Great Neck L. I. N. Abels Wasserberg & Co. DEIGNAN Charles J. Sl 305 Burkey Ave. Reynoldsburg Ohio Claycraft Co. DEIRO John H. E Thermador Corp. 5215 Boyle Ave. Los Angeles Calif DE LA ROY Hans W Delco Radio Div General Motors Corp. Kokomo Ind DELAWARE CLAY CO Home W. Wilson Box 352 Delaware Ohio de LEEUW Peter Eisenberg & Co. Inc. Central Post Office Box 323 Tokyo Japan DELGADO Cyril B. G The Glass Industry 55 W. 42nd St. New York 36 Y. DeLONG Hermon W. III G 67 Main St. Dansville Y. Department of Public Works DEMAISON R. J. R Quigley Co. Inc. 415 Madison Ave. New York 17 N. DeMARIA Vincent C. G Sylvania Electric Products Inc. Box 6. Bayside N. Y. DEMUTH GLASS WORKS INC George F. Young Box 629 Parkersburg W. Va DENISON ENGINEERING CO THE W. C. Denison 1160 Dublin Rd Columbus 16. Ohio DENISON George W. SF Ohio Clay Co. Box 1776 Cleveland 5. Ohio DENISON John C. Jr. G John C. Denison & Son Co. Box 63 Rochester Pa DENISON Norman E. S Ohio Clay Co 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 & Tile Co. Inc. Box 53 Great Bend Kans de PABLO Liberto Ohio State University Lord Hall Rm 113 Columbus 10. Ohio DE PIOLENC Gerard X Saint Gobain Inc. 500 Fifth Ave. New York 36 N. Y. dePROSSE Victor A. EI 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 Wisc deROUX Juan Ramon 1 Box 1486 Panama Rep of Panama Panama Clay Products Co. Inc. DERR Robert H. W CertainTeed Products Corp. 204 Park ? Pittsburgh 9 Pa DerSARKISSIAN Michael Gaspert N. DESAIX Herbert A. SI 122 Jefferson Park Dr. Huntington W. Va Barboursville Clay Mfg Co. DESENNE Claude M. S Cote de l'Eglise Boischatel Co. Montmorency Que Canada Citadel Brick Ltd. DESMARQUEST Louis Institut de Ceramique Francaise 6 Grande Sevres S. & O. France DETAMORE Walter A. S Barium Reduction Corp. South Charleston 3. W. Va DEURVORST F. B. M. Het Zonnehuis Terborg Holland Koninklijke Fabrieken Diepenbrock & Reigers N. V. DEUTSCHE GLASTECHNISCHE GESELLSCHAFT Untermainkai 12 Frankfurt A. M. Germany DEUTSCHE KERAMISCHE GESELLSCHAFT Reuterstrasse 235 Bonn Rhein Germany DEUTSCHER Jerome S. SI R.R. 1 Box 938 4199 Temescal Ave. Norco Calif Maybow Inc. DEVILBISS CO E. F. Frey Toledo 1. Ohio de VILLE Raish W. I Harvard University Graduate School of Business Soldiers Fieid Boston 63 Mass DEVLIN James F. EJI 1523 E. 33rd St. Baltimore 18. Md Pemco Corp. DeVOE Charles F. G 38 W. Fourth St. Corning N. Y. Corning Glass Works DeVRIES Robert C. B 2012 Hudson St. Schenectady N. Y. General Electric Co. DEW Rober J. Jr. B Ceram Research Lab University of Tampa Tampa DEWEY B. F. V 42 Summit St. LeRoy N. Y. Lapp Insulator Co. DEWEY John L. R Reynolds Metals Co. Box 191. Sheffield Ala Fla de WYS E. Christiaan B Chelsea Dr. R. R. 2 Granville Heights Ohio Corning Fiberglas DEXHEIMER E. C. E Corp. 917 Country Club Drive St. Louis 21. Mo. > DEYO R. Daniel R 104 Dogwood Park Forest Ill United States Steel Corp. DIAMOND ALKALI CO L. T. Welshans Cement Div 300 Union Commerce Bldg Cleveland 14 Ohio . DIAMOND Grant S. RFI Electro Refractories & Abrasives Corn 344 Delaware Ave. Buffalo 2 N. DIAMOND Jacob J. B National Bureau of Standards Coan Ave. & 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 Y. DICK Clarence H. G 1013 Gordon St. Natrona Heights Pa Pittsburgh Plate Glass Co. ROSTER 25 IK William O. Jr. 37 Meadow Brook Apts Corning N. Y. CKAS Charles H. E 1524 Sunset Rd Chattanooga Tenn Samuel Stamping & Enameling Co. CHENS CHENS H. A. 9Porcelains Aust Pty Ltd. Separation St. Northcote Victoria Australia CKEY Herbert R. S 26 Regent St. St. Thomas Ont Canada Canada Vitrified Products Ltd. CKEY John M. Jr. SI Hanley Co. Summerville Pa ETERT Harry W. B Harry W. Dieter Co. 1214 Virginia Dr. Kerrville Texas ETRICH Waldemar F. B 1209 Potomac St N. W. Washington 7. D. C. United States Bureau of ETTERLE Edwin W. WI 3834 Monteith Dr. Mines Los Angeles 43 Calif Ferro Corp. ETZ Earl D. 583 Hess Rd Columbus 10 Ohio ETZEL Adolf Institut fur Silikatforschung Wurzburg Germany Neunerplatz 2 LAZZARO John F. 4015 34th S Seattle 8 Wash LLARD William F. Jr. S 2125 E. Side Court Augusta Ga Merry Bros. Brick & Tile Co. LLENDER Richard D. Jr. W 8 Sunnybrook Trail Signal Mountain Tenn American Lava Corp. ILLIARD Paul D. GI 1313 E. Wheeling St. Lancaster Ohio Anchor Hocking Glass Corp. 7 NGHAM Robert P. W ! Cheyenne St Golden Colo ILLON jors Porcelain Co. ILLON C. L. G Latchford Marble Glass Co. Box 71707. Los Angeles 1. Calif ILLON Zale W 56 Riverlawn Dr. Fair Haven N. J. Atlantic Tile Mfg Co. INGLEDINE H. F. S National Sewer Pipe Ltd. 330 Wentworth St. N. Hamilton Ont Canada INGLER Edward L. Jr. R Carborundum Co. Refractories Div Niagara Fails Y. INGWALL Andrew G 588 Grove St Upper Montclair N. J. Consulting Scientist INGWALL Andrew G. F. G 588 Grove St Upper Montclair N. J. RCA RCA RCA Victor IPPELL L. V. R 1407 Cherry Lawn Ave. R. R. 3. Owosso Mich West Abrasive Co. IRKSEN A. J. G American Potash & Chemical 99 Park Ave. New York 16 Corp. N. Y. IRLAM Arthur C. G 208 N. Talley Ave. Muncie Ball Bros. Co. Inc. Ind ISTILLATOR Philip R. W Jackson Vitrified China Co. 2 West St. Pelham Manor 65 N. Y. ITHRIDGE Edward H. E Richmond Radiator Co. Monaca Pa IXON Anna Lane D ** N. Fourth St. Burlington Iowa " 1. Gene R - anite Mining Corp. Cullen Va IXON JOSEPH CRUCIBLE CO W. R. Wyckoff 167 Wayne St. Jersey City 3. N. J. OL 35 No. 10 1956 DJAJOES S. Klitren Kidul GK 6/298 Jogjakarta Java Indonesia DLUGOZIMA W. R. WI R. R. 19 South View Dr. East Liverpool Ohio Patterson Foundry & Machine Co. DODD Charles M. SFI Dept. of Ceramic Engineering Iowa State College Ames Iowa DODGE Alfred W. G Hazel Glass Co. 126 Market St. Zanesville Ohio DOERSELN Kenneth P. M Silk City Tool & 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 Richardson Mfg Co. DOMINION MINERALS DIV RIVERTON LIME & 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. RI Carborundum Co. Falconer N. Y. DORA Joseph C. E 3246 West 62nd Pl Chicago Ill Crane Co. DORAN Robert F. GI Sylvania Electric Products Inc. Cottage Pl Mineola N. Y. DORF Arthur L. 331 W. College Ave. State College Pa DORN Alvah J. G 4 Oakwood Dr. Box 152 Corning N. Y. Corning Glass Works DORN G. Neal SI 1015 Kemp Ave. Ironton Carlyle Tile Co. Ohio DORSETT O. A. W Knox Porcelain Corp. Knoxville Tenn DORSEY Baird L. R 300 Walnut Rd Pittsburgh 2 Pa Jones & Laughlin Steel Corp. DORSEY John J. 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 Wisc Wisconsin Porcelain Co. DOUGHERTY Robert W. 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. Dalry Ayrshire Scotland DOUGLAS R. W. Society of Glass Technology Thorn Hallam Gate Rd Sheffield 10. England DOWLING Robert F. G American Optical Co. Southbridge Mass DOWNS Charles D. W Columbian Carbon Co. Mapico Color Div 601 Cass St Trenton 10 X. J. DRAKE M. Ellis D Alfred University Alfred N. Y. DRAKENFELD B. F. & CO Scott J. Courtney 45-47 Park Pl New York 7 Y. DRAKER Harry C. M 38600 Courtland Dr. Willoughby Ohio Harshaw Chemical Co. DRAMMENS GLASSVERK Ragnar Tanberg Drammen Norway DRAPER Perry E. W Mansfieid Sanitary Pottery Inc. Perrysville Ohio DRECHSEL Heimut E. G Smith Kline & French Labs 1530 Spring Garden St. Philadelphia 1. Pa DRESSLER Philip MFI Swindell Corp. Box 1888 Pittsburgh 30. Pa DREYLING Lewis J. R Mil town 229 Milltown Rd Milltown N. I. Quigley Co. Inc. DROUHARD W. J. WI Mansfield Sanitary Pottery Inc. Perrysville Ohio DRUCKER Julius Farbenfabriken Bayer Aktiengesellschaft 7-9 Rheinuferstr Uerdingen Germany DRUMMOND Charles H. G 1639 Cass Rd Maumee Ohio Illinois DRUMMOND W. G 214 Crim St. Bowling Green Ohio Libbey Glass Co. DUBER William Box 1318. Georgia Tech Atlanta Ga DUBLER Robert H. Pacific Co. 330 W. Citrus St W Colton Calif DuBOIS H. 3. MFI Golding Co. 1401 New York Ave. Trenton N. J. DUCKWORTH Winston BFI Battelle Memorial Institute 505 King Ave. Columbus 1. Ohio DUDDING B. P. International Commission on Glass Research Laboratories General Electric Co. Ltd. Wembley Middlesex England DUE Herbert J. W 11 Scoles Ave. Clifton St. Joseph Lead Co. N. J. wae DUECKER Heyman C. G 28927 Emerson Way Inkster Ford Motor Co. Mich 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. DUFF R. D. G Illinois Va 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 Crescenta Calif Gladding McBean & Co. DUGAN Robert T. Box 1844 Midland Texas ROSTER 27 DUGGAN J. J. G Walsh Refractories Corp. 101 Ferry St St. Louis 7 DUHRSSEN Alfred D Commercial Decal Inc. Mo. Box 759. East Liverpool Ohio gees, John J. W x 33. Saxonburg Pa Co Ceramics Co. JULBERG Irving R 254 N. Allegheny St. Bellefonte Pa J. H. France Refractories Co. JULIN Francis H. 7728 Westmoreland Dr.SaSrasotaarasota Fla UNBECK Norman J. R International Minerals & Chemical Corp. 20 N. Wacker Dr Chicago 6 Ill DUNCAN J. Earle G Pittsburgh Plate Glass Co. Research Lab Creighton Pa JUNCAN Russell F. B 209 Franklin Dr. Berea Ohio Ferro Corp. UNCOMBE George H. Jr. SF 150 E. Frambes Ave. Columbus 1. Ohio Evans Brick Co. JUNGAN Robert H. BI 6850 Meadowbrook Manor St. Louis Park Minn Minneapolis Reg Co. CNN H. E. M Suite 206 300 Mt. Lebanon Blvd. Pittsburgh 34 Pa Vanadium Corp. of America UNN John P. G Corning Glass Works Corning N. Y. JUNN Peter E. G Rauland Corp. 4245 N. Knox Ave. Chicago 41 III JUNNICAN Ward G. G 277 E. Seventh St. Clifton N. J. Becton Dickinson & Co. UPLIN V. j jr 3FD 0 North Ave. Fanwood N. J. abcock & Wilcox Co. UNT E. I. de NEMOURS & CO INC John M. Olsen Electrochemicals Dept. Wilmington 98. Dei BURHAM Cari T. 3 742 Windsor Ave. S. W. Roanoke Va General Electric Co. URST William A. M 309 Madison St. St. Marys Stackpole Carbon Co. Pa OUWEZ Pol 3 California Inst of Pasadena Calif Technology DYNES Marvin W. G Van Dyne Quartz Works Bax 148. St. Charles Ill YRE Warren T. E 317 Estaugh Ave Haddonfield N. J. Universal Corp. OZURA Edward J. B American Optical Co. Research Center Southbridge Mass E EAGLE J. Eugene MFI 3202 McShane Way Baltimore 22 Md EAGLE Pemco Corp. PICHER CO D. R. Carter American Bldg Cincinnati 1. Ohio CARHART William H. G RCA Victor Engineering Dept. S. Adams St. Marion Ind Fred C. x 84. Broadalbin N. Y. . - J. Alfred B 1621 El Molino St. Alhambra Calif Consolidated Electrodynamics Corp. VOL 35 , No. 10 1956 EASTER George J. RFI Electro Refractories & Abrasives Willett Rd Buffalo 19 Y. Corp. EBERSOLE Robert A. R Chisholm Boyd & White Co. 610 W. 57th St. Chicago 21 Ill ECKEL Albert R. R Commercialores Inc. Clover S. C. ECKEL Harold A. Trinidad Clay Products 44 South Quay Port of Trinidad B. W. I. Ltd. Spain ECKLEY J. R. R Aluminum Co. of America 1501 Alcoa Bldg Pittsburgh 19 Pa ECONOMOS George W Massachusetts Institute of Technology 77 Massachusetts Ave. Rm 20C Cambridge 39. Mass EDGAR Albert C. M Edgar Plastic Kaolin Co. Edgar Fla EDGAR Clement B. R M. H. Derrick Co 1620 Oliver Pittsburgh 22. Pa EDGAR PLASTIC KAOLIN CO Bldg Albert C. Edgar Edgar Fla EDLIN Vernon B 6712 Chappel Ave Chicago 49 !! 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. Murray 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 Bedford Mass EHMAN Roy G. GFI 323 E. Hamilton Ave. State College Pa Pennsylvania State University EHRLICH Raphael H. S 4039 N. Central Expressway Dallas 4. Texas Crown Brici Mfg Co EICHBAUM Barlane R. E. Bend Park 8 May Court Red Oaks Mill Poughkeepsie Y. EIDE Alwin C. E American Zinc Sales Co. Box 327 Columbus 16. Ohio EISEN John B. R Box 27. Waterloo Wisc Ray Co. EISENBERG Marvin E Montaine Corp. 2446 S. Prairie Ave Chicago 16 Ill EISENBERG Meyer W 64 Chester Circle New Brunswick N. J. Architectural Tiling Co Inc. EISS Roger L. Box 827. Alfred N. Y. EITEL Wilhelm BI Dir of Inst of Silicate Research University of Toledo Toledo 6. EKDAHL W. Graydon G Manville Research Center Manville N. J. Ohio EKEDAHL J. Charles R 1113 N. Raynor Ave Joliet Ill Illinois Clay Products Co. ELDER J. C. WI Robertson Mfg Co. Box 848 Trenton 5. N. J. ELECTRIC AUTO CO SPARK PLUG DIV Robert Twells Box 231 Fostoria Ohio ELECTRO REFRACTORIES & ABRASIVES CORP Grant S. Diamond 344 Delaware Ave. Buffalo 2. N. Y. ELJER CO Enamel Div L. A. Bateman Salem Ohio ELLARD Earle R. RI 344 Clinton Ave. Timn Ohio Inc. Basic ELLEFSON ) B. S. G Sylvania Sylvania Electric Products Inc. 1740 Broadway New York 19. Y. ELLINGSWORTH Martin K. 5320 Midwood Ave. Baltimore 12 Md ELLIOTT Amos W. B Covered Wagon Ranch Cloverdale Calif ELLIOTT C. Franklin 3301 Pinewood Ave. Apt 41 Chattanooga Tenn ELLIOTT George 3 Hillpark Gardens Edinburgh 4. Scotland National Coal Board ELLISON Henry W. G 169 E. Third St. Corning N. Y. Corning Glass Works ELLISON R. W. R 1551 E. Loma Alta Dr. Altadena Calif Gladding McBean & ELMER Jack T. X 1890 Woodland Ave. Co. Santa Clara Calif ELMER Thomas H. B 219 E. High St. Painted Post N. Y. Corning Glass Works ELOSUA Bernardo W Ladrillera Monterrey S. A. Box 360 Monterrey N. L. Mexico ELSTON Keith WI 117 Somerset Ave. Pittsfield Mass General Electric Co. G. ELY William G PittsburgPhlate Glass Co. 1 Gateway Center Pittsburgh 22 Pa EMANUEL E. C. G Armstrong Cork Co. Research & Development Lancaster Pa Center EMHART MANUFACTURING CO W. H. Shorter 333 Homestead Ave. Hartford 2. Conn EMHISER Donald R Brackenridge 1105 Eighth Ave. Pittsburgh Plate Glass Co. Pa EMISON EMISON M. Hershel G Corning Glass Works Charleroi Div Charieroi EMLEY William S. W Pa 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 Allea H. 1799 Franklin Ave. Columbus 5 Ohio EMRICH Barry R. RJI 301 QuincyN. E Apt E Albuquerque N. M. Kaiser Aluminum & Chemical EMRICH Emerson W. MI R. T. Vanderbilt Laboratories Corp. East Norwalk Conn EMRICH Harold W. SI 1560 S. Krameria Denver Colo Denver Brick & Pipe Co. ENBERG Christer Tegellaboratoriet Brick Laboratory Drottning Kristinas vag 45 Stockholm O. 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 Y. ENHUS Hans Gosta Aktiebolaget Malardalens Ericsbergsgatan 27 Stockholm 3 Sweden Tegelbruk ROSTER 29 ENLOE Scroop W. 30 Dillsboro N. Harris Clay Co. Jr. ENLOE Scroop W. Jr. Jr. M Harris Clay Co. Spruce Spruce Pine C. ENOCH Charles R. RI 320 Spring Ln Bridgeport Pa Refractory Specialty Co. NOS W. Kenneth 607 Rutledge Ave. Charleston C. EPSTEIN Edward Jr. R Laclede Co. Div K. Porter Co. 4705 Ridgewood Ave. St. Louis Mo. ERARD Edward G Vidrio Neutro S. A. Prolongacion Calle de la Rosa No. 9. Atzcapotzaico D. F. Mexico ERICKSON A. Alfrei G 84 Pershing St. Corning N. Y. Corning Glass Works ERICKSON Allen J. G 4239 E. 74th St. Seattle 15 Wash Northwestern Glass Co. ERIE RESISTOR CORP Bobby L. Joyn 644 W. 12th St. Erie Pa ERNST Walter S. M 2728 E. Fifth Ave. Knoxville Tenn Volunteer Portland Cement ERSLEY Emmett J. GJ R. R. 1 Box 352 Co. 24585 Wayman St. Newhall Calif Thatcher Glass Mfg Co. ERVIN Guy Jr. B Research Laboratory Norton Cn Worcester Mass ERWIN Lee R. G 419 Tocino Duarte Calif Carrier Corp. ERZEN Frank C. E 731 S Greenberry Dr. West Covina Calif Bulwark Corp. of America ESCHENBURG Robert L. II Floresville Texas _ SSELSTYN Willard A. o American Embassy New Delhi Mail Room Department of State Washington 25 D. ESTES Joseph F WS Haeger Potteries Inc. 7 Maiden Lane Dundee Ill ETHEREDGE Otis K. M Box 252. Gordon Ga Southern Clays Inc. ETRIS Samuel F. R 100 W. Nippon St. Philadelphia 19 Pa American Society for Testing Materiais 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 Corning Glass Works EVANS Edward J. . Welsh Tinplate & Metal Stamping Co. Ltd. Box 14 Llanelly Carmarthenshire England VANS LEAD CORP Fred Leake Box 1467 Charleston 25. W. Va EVANS EVANS PIPE CO Jr. T. J. Evans III Uhrichsville Ohio VOL 35 No. 10 1956 EVANS Rienard F. W Iroquois China Co. 2320 Milton Ave. Syracuse 9 Y. EVANS Ross M. 8 604 E. Mechanic St. Brazil Ind Arketex Ceramic Corp. EVANS T. J. III S Evans Pipe Co. Uhrichsville Ohio EVANS W. Gordon Geo L. Ashworth & Bros. Ltd. Broad Street Works Hanley Trent England EVANS William W. SI 506 E. Iron Ave. Dover Ohio Robinson Clay Product Co. EVERHART J. O. SFI Engineering Experiment Ohio State University Columbus 10. Ohio Station EWALD Merwin R. M Box 19A R. R. 1 Monclova Ohio Surface Combustion Corp. EWING Rober F. WI Mansfield Sanitary Pottery Perrysville Ohio EXOLON CO Harvey J. Robillard 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 Ill FABIANIC W. L. RFI Laclede Co. Div H. K. Porter Co. 4705 Ridgewood Ave. St. Louis 16. Mo. FABRICA de LADRILLOS INDUSTRIALES y REFRACTARIOS S. A. Salvador Odriozola Gomez Apartado 390 Monterrey N. L. Mexico FABRICA de PORCELANA da VISTA ALEGRE LDA Gabinete a Lab Central de Estudos Candal Vila Nova de Gaia Portugal FACKLER Ernst G. Apartado Aereo 6108 Bogota Colombia Vidrio S. A. FACKT George P. SF 408 Paseo del Mar Box 378 Palos Verdes Estates Calif Redon in Tile Co. Ltd. FADANELLI Louis H. 1132 S. California Ave. Chicago III FAGG Leo W. E Johnson Engineering Co. Box 7157 Tulsa Okla FAHRENBRUCK William O. RI R.R. 1. Box 95. Tiffin Ohio Sterling Grinding Wheel Co. FAILMEZGER Howard WFI Victor Insulators Div T Circuit Breaker Co. Maple Ave. Victor N. Y. FAIN Charles C. 789 Glendalyn Ave. Spartanburg C. FAIRFACTS CO J. Ryan Smith Fairfacts St. Trenton 8. N. J. FALCONER Donald P. R 1018 Maple Ave. Evanston Ill Sales Engineer FALLON Frank J. WI 29 Felton West Newton Mass Raytheon Manufacturing Co. FALTER Arthur H. R 8635 Jacob Pl Niagara Falls N. Y. Carborundum Co. FARBER Louis G. DI Ceramics Monthly 4175 N. High St. Columbus 14. Ohio FARGO Jarvis J. G 28 Wilson St. Corning Y. Corning Glass Works FARKAS Howard M United States Stoneware Co. 60 E. 42nd St. New York 17 N. FARNELL James H. W Louthan Manufacturing Co. East Liverpool Ohio FARR Archie E. E 0. Hommel Co. Box 475 Pittsburgh 30 Pa FARROW Lewis C. E R. R. Clyde Ohio Whirlpool Seeger Corp. FASOLD G. A. E 7329 Bernard Ave. Cincinnati 31 Ohio Philip Carey Mfg Co. FAUCHON J. B. Ets Fauchon 21 Ave. de Tourville Paris 7 France FAULKNER Karl B. G 179 Victory Hwy R.R. 2 Painted Post Y. FAUST Ernest H. Jr. RI 58 Klarman Dr. Mt. Carmel Conn American Refractories & Crucible Corp. FAUST George T. B 9907 Capitol View Ave. Silver Spring Md U. Geological Survey FAY Wayne X. RI 707 Knox Rd Villanova Pa General Refractories Co. FEAGIN R. C. BI Austenal Inc. 224 E. 39th St. New York 16 N. Y. FEASTER Richard V. 560S University Way Apt 5 Seattle 5 Wash FEDERAL GLASS CO Henry H. Blau 515 E. Innis Ave. Columbus 7. Ohio FEDERAL SEABOARD TERRA COTTA CORP O. E. Mathiasen Box 301. Perth Amboy N. J. FEDOCK Michael P. R3 4214 Ashwood Dr. N. W. Canton 8. Ohio Republic Steel Corp. FEIGELSON Robert S. 720 Techwood Dr. Atlanta Ga FEINBLOOM David T. 3459 Park Ave. Wantagh N. Y FELD Philip o Borenstein 137-69 70th Rd Flushing N. FELDMAN Gail H. GJ 43 Villa Ct Hempstead Y. United States Navy FELKER Ernest W Box 33 3408 Summer Rd Macedonia Ohio Ferro Corp. FELLOWS R. L. EFI 748 N. Kensington Ave. La Grange Ill Century Vitreous Enameling Co. FELS C. G. RI woe tt 11 DeForrest Ave. North Plainfieid N. J. Fels Refractories Inc. FELTON Ernest 990 N. Park Ave. Pomona Calif FENERTY M. J. B Aluminum Co. of Canada Arvida Que Canada FENITY Robert D. W Minneapolis Research Center 500 Washington Ave. S. Hopkins Minn FENSTERMACHER John E. RJ 302 Cherry Clearfield Pa Harbison Refractories Co. FENTON Walter M. E Lithium Corp. of America Inc. 2560 Rand Tower Minneapolis 2 FENTZKE A. Daniel R 840 Hickman Rd Augusta Ga Bahcock & Wilcox Co. Minn ROSTER 31 FERGUSON Donald Box 929 Alfred N. FERGUSON Dougias J. D Pigeon Forge Pottery Pigeon Forge Tenn FERGUSON D. Robert III R 401 Vine St. East Liverpool Ohio Crescent Brick Co. Inc. RGUSON Robert F. G 1765 Caleb Dr Zanesville Ohio Hazel Glass Co. FERGUSON Rober L. S Yankee Hill Brick Mfg Co. 728 Stuart Bldg Lincoln S Nebr FERON Marcel Administrateur Societe Beige de Ceramique Cerabel Rue d'Herchies Baudour Belgium FERREIRA Laurence E. B Willoughby Arms Apt C Golden Colo Coors Porcelain Co. FERRES Daniel Vidplan S. A. Real No. 4415 Montevideo Uruguay FERRIS BRICK CO R. T. Wilson Box 188 Ferris Texas FERRIS Harry Philip M 20 Birch Dr. Levittown Pa Simonds Abrasive Co. FERRIS James E. G Hooker Electrochemical Co. Niagara Falls Y. FERRO CORP R. A. Weaver 4150 E. 56th St Cleveland 5. Ohio FERRO ENGINEERING CO Benjamin F. Anthony 1400 Hanna Bldg Cleveland 15 Ohio FESLER Ray T. W A.A.A. Corp. Box 815 Gadsden Ala FESSLER A. H. WFI 423 S. Edgewood Lombard III LA C Spark Plug Div General Motors Corp. FETTER H. R Cia Mexicana de Refractarios A. P. Green S. A. Hamburgo 51 Apartado Postal 71 Bis Mexico D. F. FETTERLEY Guy H. R Box 26. Chippawa Ont Canada - Norton Co. FETZER George W. M 1205 17th Ave Columbus 11. Ohio George Fetzer Ceramic Supplies FEYLING Claus A. Ele Stentoifabrik Egersund Norway FIBERGLAS CANADA LTD John MacRae Box 309 Guelph Ont Canada FIEDLER William S. G Bjorksten Research Labs Inc. Box 265 Madison 1. Wisc FIELD Theodore E. B Corbart Refractories Co. 1600 W. Lee St. Louisville FIELDS Ernest Jr. S 2315 Elm St. Owensboro 10 Ky Ky 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 228 N. LaSalle St. Chicago 1. III FILLMORE Charles L. WI Union Inc. 900 E. Keefe Ave. Milwaukee 1 Wisc FINDLAY CLAY PRODUCTS CO R. S. Craft Washington Pa FINLAY G. R. R 2231 Waters Ave. Niagara Falls Ont Norton Co. Canada INLAYSEN John R. School of Ceramics Rutgers University New Brunswick N. J. VOL 35 No. 10 1956 FINNEY Edwin L. S Claycraft Co. Shawnee Ohio FIRESTINE Arthur G. G 34 Dewey Ave. Fairport Y. Bausch & Lomb Optical Co. FISCHER Eugene A. R 108 Newton Ave. N. Worcester 9 Mass Norton Co. FISCHER Peter R. J Goethestr 34 Wueifrath Rhid Germany FISCHER Robert J. W 18 Fairway Ave. 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 City Ohio FISHER Eugene A. W Electric Auto Co. Spark Plug Div Fostoria Ohio FISHER Henry C. R Norton Co. 1 New Bond St. Worcester 5. Mass FISHER Joseph R. W Bell Telephone Labs Rn Murray Hill N. J. FISHER Richard G. 17 Weils St. Hornell N. 341 FISHER William V. G Anchor Hocking Glass Corti Lancaster Ohio FISHKIN Henry W. W 233 Mantua St Park Forest III Ferro Corp. FISHLEY William S. W Sparta Ceramic Co. East Sparta Ohio SCHURMAN CORP Murray Yawitz 70 Portman Rd New Rochelle N. FITZGERALD Alex E. RI - Avon Apts Narberth Pa General Refractories Co.i FITZGERALD J. Vincent W Tile Council of Am Research Center School of Ceramics Rutgers University New Brunswick N. J. FITZPATRICK William D. R1 1009 Vermont Ave Apt 2 Pittsburgh 34. Pa ( Harbison Refractories Co. FITZSIMMONS Elmer S. RI Chem & Abrasives Research Dept. Cincinnati Milling Machine Co. Cincinnati 9. Ohio FITZSIMMONS Robert F. W R. R. I. Oakfield N. Lapp Insulator Co. Inc. FIX Frank A. X Posey Iron Works Inc. Lancaster Pa FIX William G. M Carborundum Co Glahar 3335 W. 47th St. Chicago Div 32. III FLEISCHER Arthur B Nickel Cadmium Battery Corp. Box 349 Easthampton Mass FLEMING A. P. M. Metropolitan Vickers Electrical Co. Ltd. Trafford Park Manchester 17. England FLEMING Charles A. EI 3613 General Bates Dr. Nashville 4 Tenn Pemco Corp. FLEMING David M. SJ 322 E. Irwin Ave. State College Pa Gery Shale Brick Corp. FLEMING Raymond C. Jr. M 3113 Henderson Cr W. Lakeland Fla International Minerals & Chemical Corp. FLEMING Thomas T. R Frank Samuel & Co. Inc. 2200 Lincoin Bldg Philadelphia 7 Pa FLEXON John D. R Galatin , Toledo Ohio First Pittsburgh ) . Flick & Peckham National Bank Bidg Arthur D. Little Inc. 30 Memorial Dr. Cambridge 42 Mass FLINT Francis C. GFI Hazel Glass Co. 15th & jacobs Sts Wheeling W. Va FLORENCE Jack M. G Kimble Glass Co. Box 1035-1036 Toledo 1 Ohio FLORIDA TILE INDUSTRIES INC James W. Sikes 608 Prospect St. Box 451 Lakeland Fla FLOYD William A. Box 4360. State College Raleigh N. Sta FLU Eldon Bruce W 1533 Crooks Rd Royal Oak Ceramic Div Champion Spark Plug Co Mich FLYNN Paul H. B International Nickel Co. Inc. Bayonne Works Bayonne N. J. FOGELBERG Sven Webb's Crystal Glass Dennis Giassworks Co. Ltd. Stourbridge England FOLKERS Charles L. R 917 Park Ave. Ackley Iowa FONTANA Eugene H. G Box 259. Corning N. Y. Corning Glass Works FONVIELLE Frank P. Jr. WI Dentist Supply Co. of New York 500 W. College Ave York Pa FOOTE MINERAL CO L. G. ) 18 W. Chelten Ave. Philadelonia 44. Pa FORAKER Robert W. EI Titanium Pigment Corp. 99 Hudson St New York 13 Y. FORBES Charles C. G Allen 3. Du Mont Lahs 750 Bloomneid Ave. Clifton N. J. FORBES Lewis B G Pilkington Bros. Canada Ltd. 165 Bloor St. E. Toronto 5. Ont Canada FORD Fred J. S Box 395. San Francisco Calif Consuitant FORD George D. WI 2136 Wilmer St. Zanesville Mosaic Tile Co. Ohio FORD Walter D. GI Pittsburgh Corning Corp. Research & Development Div Port Allegany Pa _ FORD William D. E 1704 W. 54th St. La Grange Ill Sears Roebuck & Co. FORDS PORCELAIN WORKS I. A. Hansen Perth Amboy N. J. FORESMAN Grover C. G 212 Cedar St. Corning N. Y. Corning Glass Works FORJAZ Nicolau Porto Ferreira C. P. Sao Paulo Brazil FORKNER Henry R. XI 201 Fairview Ave. Blacksburg Va Virginia Polytechnic Institute FORLAND Tormod G Pennsylvania State University Dept. of Ceramic Technology University Park Pa ROSTER 33 FORMAN Sydney A. B Dept. of Agriculture Chemistry Science Service Div Ottawa Ont Canada FORNIA Robert F. EJ 2326N. 50th St Seattle Wash United States Air Force FORTH Robert D. E 1359 N. W. Circle Dr. Kankakee Ill Florence Stove Co. FOSDICK Marion L. DF 100 N. Main St. Alfred N. Y. FORBES GLASS CO F. R. Motsch Marion Ind FOSTER H. B. S Brick & Tile Service Inc. Box 2935 Greensboro N. C. FOSTER Luther M. B Aluminum Co. of America Alcoa Research Labs Box 772 New Kensington Pa FOSTER W^/lder D. B 5405 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 8. Mo. FOX Marilyn Box 161. Alfred N. Y. FRAD William A. R 1800 Oak St Rolla Mo. Missouri School of Mines FRAHME Herman H. WI 2358 Banning Rd Akron 13 U S. Stoneware Co. Ohio FRAME Dudley P. Jr. MI 2366 Club Rd Columbus 21 Ohio Harrop Ceramic Service Co. FRANCE J. H REFRACTORIES CO William A. France Snow Shoe Pa FRANCE William A. R J. H. France Refractories Snow Shoe Pa Co. FRANCESCHINI FRANCESCHINI Felippe J. V. de A. Ceramica Sao Caetano Caixa Postal 273 Sao Paulo Brazil FRANCIS Ronald K. I Box 847 Alfred N. FRANCISCO Allen C. RI Brook Lane R.R. 1 Chesterland Ohio Kolcast Industries Inc. FRANCK Leon Ets Franck & Steeman S. A. 20. Avenue Emmanuel Brussels Belgium FRANCL Josef B 1802 Perth St. Toledo 7 Ohio Owens FRANK Arthur W. R 2284 Auer Park Pewaukee Lake Pewaukee Wisc Duty Electric Co. FRANK Henry A. W Rockport Sanitary Pottery Rockport Ind FRANK John D Frankoma Pottery Box 789 Sapulpa Okla Corp. 1 FRANKLIN Earl W. RI 811 Columbia Ave. St. Joseph Mich Laboratory Equipment Corp. FRANKLIN William S. GI 918 Grassmere Ave. Wanamassa Bendix Aviation Corp. Red Bank Div N. J. FRANKOMA POTTERY John Frank Box 789 Sapulpa Okla VOL 35 No. 10 1956 FRANTZ Samuel G. M S. G. Frantz Co. Inc. Box 1138 Trenton 6. N. J. FRANTZ S. G. CO INC Samuel G. Frantz Box 1139 Trenton o N. J. FRANZ Leo J. S Acme Brick Co. Malvern Ark FRASER Lewis H. D. ( BI Mar Apt 106 Marion Ind RCA Tube Division FRASER Orray T. GI 574 E. Mithof St. Columbus ^Ohien B. F. Drakenfeld & Co. Inc. FRASER Walter A. G 1320 E. 56th St. Chicago 37 Ill Chicago Midway Laboratories FRASER W. B. S Fraser Brick Co. Box 144 Dallas 1. Texas FRAZIER C. E. GF Simplex Inc. 436 E. Beau St. Washington Pa FRAZIER C. T. G 27 E. Beau St. Washington Pa Simplex Inc. FRAZIER J. Earl GFI Simplex Inc. 436 E. Beau St. Washington Pa SIMPLEX INC C. E. Frazier 436 E. Beau St. Washington Pa FRECHETTE Howells Life SF 2 Park Ave. Ottawa Ont Canada FRECHETTE Van Derck BFI State University of New York College of Ceramics Alfred 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. Pa FREDERICK Vernon W. G Owens Glass Co. Rossford Chio FREDERICKS John D. S Pacific Clay Produc Box 2178. Terminal Annex Los Angeles 54. Calif FREDRIKSSON John I. Norton Co. Box 87 R Niagara Falls Ont Canada FREEMAN Charies A. RFI Freeman Fire Brick Co. Box 606 Canon City Colo FREEMAN Edgar H. W Thermador Corp. 20118 E. Valley Walnut Calif FREEMAN Joseph R General Electric Co. 3198 Chestnut St. Philadelphia 4 Pa FRENCH Myrtle M. DF 128 N. Main St. Alfred Y. FRENCH Preston W. GI 1517 Union Ave. Brackenridge Pa Pittsburgh Plate Glass Co. FREY E. F. M DeVilbiss Co. Toledo 1. Ohio FREYDELL Octavio Loceria Colombiana Apartado Aereo 10-46 Medellin Colombia FRIEDBERG Arthur L. EF University of Illinois 217 Ceramics Bldg Urbana III FRIEDMAN Louis K. W Homer Laughlin China Co. 212 Fifth Ave. New York N. Y. FRIGIDAIRE DIV GENERAL MOTORS CORP W. H. Pfeiffer 300 Taylor St. Dayton 1 Ohio FRISK Norman E. R 2046 Evansdale Ave. Toledo 7 Ohio Illinois FRITZ Earl C. W 16 S. Main St. Franklinville N. Precision Ceramics Inc. FRITZ E. H. WFI 710 Wainut St. Latrobe Pa Stupako Div Carborundum Co. FROBERG Laird R Corning Fiberglas Corp. Case Ave. Newark Ohio FROME Howell E. G United Fuel Gas Co. Box Charleston 25 W. Va 1273 FRONCZAK E. T. S Richland Shale Brick Mansfield Ohio Co. Box 328 FROST Leon J. E Box 138 Lewiston N. Y. Titanium Alloy Mig Div National Lead Co. FRY Herbert G. National Enainels Ltd. 53 Greenwich London S. E. Norman Rd 10 England FRYE John C. B State Geological Survey 121 Natural Resources Bldg Urbana Ill FRYE John F. 402 Calhoun St. Salisbury N. C. FRYSINGER James E. M Pennsylvania Glass Sand Corp. Two Gateway Center Pittsburgh Pa FUENZALIDA Javier H. W Foreign Div American Radiator & Sanitary Standard Corp. 40 W. 40th St. New York 18 N. FUJII Takashi Yale University Dept. of Chemistry New Haven Conn FULKER Richard H. EI 1408 Nicklin Ave. Piqua Ohio Pemco Corp. FULLER A. A. X 322 S. Twyckenham South Bend Ind Soilit Construction Dr. Co. Inc. FULLER Donald H. EI 335 S. Cook Ave. Trenton N. J. Trenton Fabricated Metal Co. FULLER L. R. EI 959 E. South St Frankfort Ind Richardson Inc. FULLER Richard B. ( WI Universal Clay Products Co. 1528 First St. Sandusky Ohio FULLER Richard G. W D. E. McNicol Pottery Clarksburg W. Va FULLER Wilfred E General Steel Wares Ltd. Adelaide & 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. G Picher Co Insulation Box 290 Joplin Mo. Div FUNKEY John H. G Lowrey Glass Co. Kloman & Wenburn Sts Baltimore 3. Md PUNKHOUSER CO J. B. 138 W. Washington St. Hagerstown Md Sauls FUNNELL John E. MI Southwest Research Institute Box 2296 San Antonio 6 Texas FUSSELL Lynn E. E 3501 Tyrone Dr. Louisville 18 Ky General Electric Co. FUWA Tasuku Massachusetts Institute of Technology Rm 8-314 Cambridge 39 Mass ROSTER 35 G GAFFNEY LeRoy J. 1103 W. Illinois St. Urbana Ill GAGIN L. V. G 2616 Latonia Blvd. Toledo 6. Ohiu O Glass Fibers Co. GAILEY Matthew D. 2601 W Montlake Pl Seattle 2 Wash GAINER Taylor M. W 215 Steedley Dr Louisville 14 American Radiator & Standard Ky Sanitary Corp. GAINES Rober F. S E. 10801 Sprague Spokane 63 Wash Washington Brick & Lime Co. GAISER R. Arthur G Ball Brothers Co. Inc. Muncie Ind GALBREATH William W. Jr. 193 Clinton Ave. Apt C Brooklyn 5. Y. Babcock & Wilcox Co. GALE Richard H. B 1081 Allston Rd RI Cleveland Heights 21 Ohio Ferro Corp. GALLAGHER Thomas F. G Laclede Co. Div H. K. Porter Co. 2512 First National Bank Bldg Pittsburgh 22. Pa GALLUP John GI Radio Corp. of America Tube Div 415 S. Fifth St. Harrison N. J. GALUSHA Richard L. W Continental Ceramic Corp. Box 41. Bigierville Pa GALVIN G. H. Jr. S Rockford Brick & Tile Co. Rockford Iowa GALVIN Richard J. S Shefeld Brick & Tile Co. Sheffield 1 Iowa GAMBLE David L. R New Jersey Zinc Co. of Pa Research Dept. Paimerton Pa GAMBLE John D. W Bell & Gossett Co 8200 Austin Ave. Morton Grove III GANDY Robert .. Jr. 3032 Eastlake Apt 3 Seattle 2. Wash GANGLER James J. R 00533 Stanford Ave. Fairview Park 26. Chio National Advisory Committee for Aeronautics GANGULI Umapati Bengal Enamel Works Ltd. O. Bengal Enamel Dist 24 Parganas West Bengal India GANPULE Anant K. Parshuram Pottery Works Co. Ltd. Morvi Saurashtra India GANTS Sheldon B. D Ceramic Associates Inc. - 3650 Dyre Ave. New York 66 N. Y. GARBISCH Norbert S. W Garco Products Inc. Box 351. Butler Pa GARCIA Ramon MI Apartado Postal 1115 Monterrey N. L Mexico Manufacturers Representative GARCO PRODUCTS INC Norbert S. Garbisch Box 351 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 360 Monterrey N. L. Mexico GARDON Robert G Mellon Institute 4400 Fifth Ave. Pittsburgh 13. Pa GARFIELD REFRACTORIES CO Kenneth A. Rugh Bolivar Pa Vol 35 No. 10 1956 GARLAND C. F. S Mason City Brick & Tile Co. Mason City Iowa GARLICK Oakley H. M Paul O. Abbe Inc. Little Falls N. J. GARLICK Philip L. D 1 Gladys St. Cyrildene Johannesburg South Africa Primrose Brick Works GARONZIK S. H. 4211 Brookview Dr Dallas Texas Crown Brick Mfg Co. GARRONI Ricardo Rua Padre Jo^o Manuel 975 Sao Paulo Brazil Ceramica Sanitaria Porcelite A GARSTANG Alec King Taudevin & Gregson Ltd. Grindlegate Works Scotland St. Sheffield 3. York England GARTNER Carl W. W General Color & Chemical Co. Inc. Box 7 Minerva Ohio GARTNER George C. W General Color & Chemical Co. Inc. Box 7. Minerva Ohio GARVE T. Walter SFI 69 W. Weisheimer Rd Columbus 14 Ohio Consulting Engineer GARVEY Lawrence P. RI RCA Victor 415 S. Fifth St. Harrison N. J. GASKINS W. W. MI Sierra Tale & Clay Co. Box 390. South Pasadena Calif GATES Daniel W. XI R.R. 4. Box 221 Huntsville Ala Redstone Arsenal GATES Louis E. Jr. Hughes Aircraft Co. Blig 20 Rm 1018B Culver City Calif GATES Major E. R 773 Vista Grande Ave. Los Altos Calif GATLIN E. H. S Texas Clay Products Co. Box T. Malakoff Texas GAUDIANO Victor M. W Sanitarios El Aguila S. A. Apartado Postal 25308 Zona 14 Mexico D. F. GAUNDER Wiibur F. G Pittsburgh Plate Glass Co. Works No. 11. Mt. Vernon Ohio GAUTSCH Murray C. MI Metal & Thermit Corp. 415 E. 151st St. East Chicago GAVIN G. P. W Kohler Co. Kohler Wisc Ind GAWTHROP Alfred S 885 Maplewood Rd Lake Forest III 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 N. J. GEIGER Joseph S. M 46 E. Welling Ave. Pennington N. J. Titanium Alloy Mfg Div National Lead Co. GEISINGER E. E. EF Pfaudler Co. 1000 West Ave. Rochester 3 N. Y. GEIST William J. X Young Machinery Co. Muncy Pa GELLER R. F. WFI 5427 York Lane Bethesda 14 Md National Bureau of Standards GELSTHARP Frederick GF 1134 Park St. Tarentum 1. Pa GELTMAN Gerald 276 Winthrop Rd Teaneck N. J. GEMMELL J. G. G Goiding Co. Box 456 Keene N. H. GEMP Robert W. R 500 Michell St. Ridley Park Pa Bot^-eid Refractories Co. GENDEL Sydney Z. RI 4050 Eastway Rd South Euclid 21 Ohio Zirconium Corp. of America GENERAL CERAMICS CORP Salvatore Ortepio Crows Mill Rd Keasbey N. J. GENERAL COLOR & CHEMICAL CO INC George C. Gartner Box 7. Minerva Ohio GENERAL ELECTRIC CO N. F. Shofstall 1811 LeMoyne Ave. Syracuse GENERAL ELECTRIC CO L. E. Thiess Insulator Dept. Baltimore 30. Md N. GENERAL ELECTRIC CO W. S. Kahlson Lamp Dept. Pitney Glass Works Nela Park 12. Cleveland Ohio GENERAL GLASS EQUIPMENT CO Victor A. Plumbo 5 S. Virginia Ave. Atlantic City N. J. GENERAL REFRACTORIES CO Russell P. Heuer 1520 Locust St. Philadelphia 2 Pa GENTRY Raymond G Alexander H. Kerr & Co. Inc. Box 2008. Santa Ana Calif GENTSCH A. Page M United Clay Mines Corp. 101 Oakland St. Trenton N. J. GENTSCH Bernhard F. M United Clay Mines Corp. 101 Oakland St Trenton N. J. GEORGE W. R. W Canonsburg Pottery Co. Canonsburg Pa GEORGE W. S. W W. S. George Pottery Co. Park Ave. East Palestine Ohio GEORGE W. S. POTTERY CO W. S. Georges Park Ave. East Palestine Ohio CAROLINA BRICK & TILE CO j C. Hagier r 10 Campbell Bldg Augusta Ga GEORGIA KAOLIN CO Robert H. Bollinger 433 N. Broad St. Elizabeth 3 N. J. GEPHART Charles D. S Cedarhurst Holly Springs Miss Holly Springs Brick & Tile Co. Inc. GERBER Oscar L. W Gerber Plumbing Fixture Corp. 232 N. Clark St. Chicago 1 Ill GERCAR Francisco J. - Uruguay S. A. Cristalerias Del Uruguay Comercio 1491 Montevideo Uruguay GERSCH Herbert S 3557 Ontario St. Columbus 11 Ohio Claycraft Co. GERSTENSCHLAGER V. Jr. R Babcock & Wilcox Co Box 923 Augusta Ga GERSTER C. W. WI Louthan Manufacturing 2000 Harvey Ave. East GETTO Allan Co. Liverpool Ohi 585 E. 16th St. Brooklyn 26 N. Y. GHERING Leonard G. GF Preston Laboratories Box 149 Butler Pa GIACOMELLI Domenico Soc It Refrattari Marghera Azionaria Via Industrie 2 Cas Post 308 Marghera Venice Italy ROSTER 3 GIANG Yu Kin Choan Huat Co. Inc. 111 Jose Rizal St. Mandaluyong Rizal Province Philippines GIBB Mary J. American Ceramic Society 1055 N. High St. Columbus 14 Ohio GIBBS Meivin B. E Inland Steel Co Quality Control Dept. East Chicago Ind GIBSON Frank B. E 9 Terrace Circle Great Neck L. I. Y. Seaporcel Metals Inc. GIBSON R. L. WI 1314 Wilmington Ave. New Castle Pa Shenango China Inc. GIBSON Rober C. E Parker Rust Proof Co. 2177 E. Milwaukee Ave. Detroit 11 Mich GIESEKE Frans Kockums Emaljerverk Ronneby Sweden GIESER RalphH. Jr. E Rheem Manufacturing Co. 7600 S. Kedzie Chicago 29 III GIESS Edward A. 1 Box 903 Alfred Y. GIL David D 122 McCall St. Bennington Vt Cooperative Design GILBERT George W. G Corning Fiberglas Corp. 598 Madison Ave. New York 22 N. Y. GILES James H. Jr. EI 1821 Brett St. Apt 2 Pittsburgh 5. Pa O. Hommel Co. GILES Raymond W 142 McKeever St. Crooksville Ohio Crooksville China Co. GILES Thomas M. 1674 Berkshire Rd Columbus Ohio GILFILLAN B. T. R Climax Fire Brick Co. Climax Pa GILFILLAN J. M. W New Jersey Porcelain Co. Box 908. Trenton N. J. GILL John H. ( R Gill Clay Pot Co. Muncie Ind GILL Joseph W. MI 685 Van Buren St. Des Plaines Ill U. S. Gypsum Co. GILL LaVerne N. WI American Radiator & Standard Sanitary Corp. Box 268 Torrance Calif GILL W. T. Jr. S Texas Brick Co. Box 510 Brownwood 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 Box 44 Tonawanda N. Y. GILLINDER BROTHERS INC J. Fletcher Gillinder Port Jervis N. Y. GILLINDER J. Fletcher G Gillinder Brothers Inc. Port Jervis N. Y. GILTNER Benedict C. S Foley & Grove Bensenville Ill Lindberg Engineering Co. GIMSON Joseph F Worcester Royal Porcelain Royal Porcelain Works Co. Ltd. Worcester England GINGOLD Jacob Robinson Fontenay 6 rue de Paris Seine France GIRALDEZ Emilio Ceramica Nacional C. A. Box 10 Riobamba Ecuador VOL 35 No. 10 1956 GIRARD R. T. E General Electric Co. General Engr Lab Bldg 37 Rm 299-33 One River Rd Schenectady 5 Y. GITTER Alice Josephine MFI 39 W. 70th New York 23. N. Whittaker Clark & Daniels GITZEN Walter H. R 1 Wesley Dr Belleville Ill Aluminum Co. of America Inc. GIVEN Conrad W. E Great Lakes Steel Corp. Ecorse Detroit 29. Mich GLABAU Ernest R. G 140 Woerd Ave. Waltham 54 Mass Raytheon Mfg Co. GLADDING Albert C. S Gladding Bros. Mfg Co. Third & Keyes St. San Jose Calif GLADDING McBEAN & CO S. V. Saginor 2901 Los Feliz Blvd. Los Angeles 39 Calif GLADNEY Kur G Fiberglas Canada Ltd. Box H Sarnia Ont Canada GLASER Frank W. R Alloy Precision Castings Co. E. 45th St. & Hamilton Ave. Cleveland 14. Ohio GLASER John H. G Uniscience Inc. 112 Crooked Billet Rd Hatboro Pa GLASFORD James W. 1350 Boilvin Ave. Rockford Ill GLASSER Fred P. Pennsylvania State University 226 Mineral Sciences Bldg University Park Pa GLAZE Francis W. GFI 4100 Gallatin St. Hyattsville Md National Bureau of Standards GLEN SHALE BRICK CORP Gordon E. Lewis Shillington Box 86 GLENSHAW CLASS Pa CO INC George W. Meyer Glenshaw Pa GLOBE INC J. Fletcher Harper 900 E. Keefe Ave. Milwaukee 1 Wisc GLOSS Gunter H. R International Minerais & Chemical Corp. 5401 Harrison St. Skokie Ill GLOSSBRENNER D. I. M R.R. 12 Box 261. Indianapolis Ind Kaolin Inc. GLOSTEX CHEMICALS INC C. G. Wurtsbaugh 3056 Bandini Blvd. Los Angeles 23 Calif G OWACKIGeorge 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 La Garland Texas Ferro Corp. GODDARD W. T. W Box 428. Hamilton Ont Canada Canadian Porcelain Co. Ltd. GODEJAHN Gordon C. Jr. G 2847 Alisdale Dr. Apt 102 Toledo 6. Ohio Owens GODFREY T. Gordon Jr. Box 3434 Clemson College Sta Clemson S. C. GODOY E. A. & CO INC Emilio A. Godoy 25 Broadway New York 4. Y. GODOY Emilio A. R E. A. Godoy & Co. New York 4 N. Inc 25 Broadway E GOETCHIUS Don R. Ferro Corp. 4150 E. 56th St. Cleveland Ohio GOIN Fred L. SI Gladding McBean & Co. Lincoln Calif GOLDING CO J. G. Gemmell Keene N. H. Box 456 GOLDMAN Basil B. S Rhodes Chemical Co. 1545 S. State St. Chicago 5. III GOLDSMITH Julian R. B University of 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 G Mellon Institute Pittsburgh 13 Pa GOLIBER Edward W. B 2602 N. Connecticut Royal Oak Mich General Electric Co. GOMEZ Leon D. Cristaleria Peidar Lida Medellin Colombia GOMEZ Salvador Odriozola R Fabrica de Ladrillos Industriales y Refractarios S. A. Apartado 390 Monterrey N. L. Mexico GONDER Lawton W Gonder Ceramic Arts Inc. Box 448. Zanesville Ohio GONZALES Narciso M Eagle Pencil Co. 710 E. 14th St. New York 9 Y. GOODFELLOW Ted M. W Tektronix Inc. 9450 S. W. Barnes Rd Portland Ore GOODHUE R. K. M Stauffer Chemical Co. 325 S. Main St. Akron 8. Ohio GOODMAN Gilbert B General Electric Research Lab Box 1088. Schenectady N. Y. GOODMAN James S. E American Radiator & Standard Sanitary Corp. 834 Louisville , Ky GOODRICH Hobert R. 1622 Santa Barbara E. Broadway WI Ave. Glendale 3 Calif Gladding McBean & Co. GOODRIDGE Paul Box 847. Alfred N. Y. GOODWIN William Jarrard B 1464 Wallace Dr. Grand Island ElectroMetallurgical Co. GORDON Irwin W RCA Laboratories Div N. 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. MT 4357 Ardmore Rd EuclidCleveland 21. Ohio Allied Engr Div Ferro Corp. GORSUCH Charles 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. Wheatlands Headley Nr Newbury Berks England A. L. Curtis Co. GOUDGE Monson F. R Mines Branch 40 Lydia St. Ottawa Ont Canada Dept. Mines & Technical Surveys ROSTER 39 GOULD Anita H. GJ 320 E. Eighth Ave. Tarentum Pittsburgh Plate Glass Co. GOULD Robert E. WFI Buffalo Pottery Inc. 25 Hayes Pl Buffalo 10. N. Y. GOWER Irving W. R 16 W. Boulevard Mexico Mo. Pa Mexico Refractories Co. 3. F. James B. S Kittanning Clay Prods Co. Worthington Pa KITTANNING CLAY PRODUCTS CO James B. Graf Worthington Pa GRAFF William A. G Glass Technology Lab General Electric Co. 1133 E. 152nd St. Cleveland 10 Ohio GRAHAM Henry C. 18 N. Erie St. Mayville N. Y. GRAHAM John Warren R 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 St Rm 303 Los Angeles 14 Calif Grant Ceramic Co. GRANT John F. I Box 262. Corning N. Y. GRAUER Oscar H. G Fischer & Porter Co. Hatboro Pa GRAVES F. E. S Lindberg Industrial Corp. 1559 Post Rd Fairfield Conn 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 Olive St. St. Louis 8. Mo. GPAY William T. G & Northrup Co. 01 Stenton Ave. Philadelphia 44 Pa GRAYBEAL Byron F. M American Vermiculite Co. Inc. Roan Mountain Tenn GREAT LAKES FOUNDRY SAND CO C. L. Cruikshank 720 United Artists Detroit 25. Mich Bldg GREEN A. P. FIRE BRICK CO William S. Lowe 1018 E. Breckenridge St. GREEN A. T. F British Ceramic Research Mexico Assn Mo. Queen's Rd Penkhull 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 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. Columbia Brick & Tile Co. GREENE Charles H. G Box 804 Alfred N. Y. State University of New York College of Ceramics NE a Eleanor L. 24 17th N. E. Seattle Wash GREENE J. F. GF 1043 New Pear Vineland N. J. Kimble Glass Co. VOL 35 No. 10 1956 GREENFIELD Jerome M Seaboard Chemical Corp. 198 Broadway New York 38 GREENHOUSE Harold M. B Aladdin Radio Industries Y. Nashville 2 Tenn GREENLEE Charles A. R Basic Inc. 845 Hanna Bldg Cleveland 15 Ohio GREGER Herbert H. W Trans 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 832 Greybull Wyo GRESHAM Lucius C. Jr. S Acme Brick Co. Box 308 Waskom Texas GRETHER Charles M. W D. M. Steward Manufacturing Co. E. 36th St Chattanooga Tenn GREWER Douglas MJ 45-34 47th St. Woodside 77 N. Y. United States Army GRIFFIN Thomas W. La Feuill^'e Tr^'lex Vaud Switzerland Hartford Empire Co. GRIFFIN William R. W Weweantic 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 & Co. GRIFFITHS Norman Nonporite Pty Ltd. 292-296 Burwood Rd Hawthorn E 2. Victoria Australia GRIGG Arthur R Box 2329. Denver 1. Colo Denver Brick & Pipe Co. GRIGG Paul E. EI 338 N. Dover Ave. La Grange Park Ill Association of American Railroads GRIM Ralph E. X Dept. of Geology Univ of Illinois Urbana Ill GRIMM Clayford T. S Clay Products Assoc of the Southwest 109 Brooks Bldg Austin 1. Texas GROBB F. S. R G. F. Sterne & Sons Ltd. 126 Bruce St. Brantford Ont Canada GROOME Garland L. R 931 Jeffrey St. Baltimore 25 Md Harbison Refractories Co. GROSS Harold I. W Santa Anita Potteries 3117 San Fernando Rd Los Angeles 65 Calif GROTHAUS Joseph V. R 2552 E. 76th St. Chicago 49. III United States Steel Corp. GROVE Robert L. WI 26 Rockland St. South Dartmouth Mass Dubilier Elec Corp. GRUNER Max N. R Harbison Refractories Co. 1325 Ambassador Bldg St. Louis , 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 Pentagna Caixa Postal 1355 Belo Horizonte Brazil Magnesita S. A. GULICK Chester 3 Kentucky Tennessee Clay Co. Inc. Mayfield Ky GULLINGS LeRoy V. G 125 Parkway Dr. Wabash Ind American Rock Wool Corp. GUMMESON P. Eg Billesholms Aktiebolag Hoganas Sweden GUNTHER F. W. S 849 Baker Ave. N. W. New Philadelphia Ohin Universal Sewer Pipe Corp. GUNZENHAUSER Adolph M Industrial Consultant 69-70 113th St. Forest Hills 75 L. .. Y. GUPTA Rajeshwar K. GJ 429 S. Division Ann Arbor Mich University of Michigan GUPTA Subodh C. GJ Box 101 Por Jervis Y. Giilinder Bros. Inc. GURR Wilhelm Manufaktur W. Haldenwanger Spandau Heerstr 221 Westsektor Germany GUSTAFSON Carl H. Jr. R 47 Montana Dr. Holden Mass Norton Co. GUTHRIE George B. W 642 Louisiana Ave. Chester W. Va Hall China Co. GUZMAN Hector G 2944 Kendale Ave. Apt 103 Toledo Ohio Illinois GYWE Mg Lu Box 216 Alfred Y. H HACK Walter L. W Western Gold & Platinum Co. 525 Harbor Blvd. Belmont Calif HACKETT James W. G 3614 Kenwood Blvd. Toledo 6. Ohio Owens HACKLER W. C. WI North Carolina State College Dept. of Mineral Industries Raleigh N. HADLEY Robert L. E General Electric Co. Major Appliance Div AP 5. Rm Appliance Pk Louisville 1. Ky HAECKER Arthur J. Jr. R 1793 Sharon Dr. Concord Calif 249 Gladding McBean & Co. HAEGER POTTERIES INC Joseph F. Estes 7 Maiden Dundee Ill Lane HAERTLING Gene H. WJI 325 Virginia Ave. Ste Genevieve Ipsenlab of Rockford Inc. HAFNER Harold C. G Mo. Bausch & 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 425 Volker Blvd. Inst Kansas '10 City '10 Mo HAGAR Donald MFI Box 328. Zanesville Ohio Donald Hagar Ceramic Materials HAGBERG Carl E. M 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 Y. ROSTER 43 HAGEDORN E. C. G Illinois Technical Center 1700 N. Westwood Toledo 1. Ohio HAGENAUER Carl J. G R.R. 1. Sarver Pa Pittsburgh Plate Glass Co. HAGGLUND Erik M Kanthal Corp. Amelia PI ' Stamford Conn HAGLER C. Jr. S Carolina Brick & Tile Co. 10 Campbell Bldg Augusta Ga HAGNER Fred F. G Phoenix Glass Co. Monaca Pa HAGY Henry E. G Corning Glass Works Laboratory Corning N. Y. HAHN William P. G 80 Norwood Ave. North Plainfield N. J. Manville Corp. HAHNER Clarence H. GF National Bureau of Standards Washington 25. D. HALDEN Frank A. B . 1133 Laurel St. Menlo Park Calif Stanford Research Institute HALDY Norman L. W American Encaustic Tiling Co. 1000 Cannon Ave. Lansdale Pa HALE Arthur R. Aluminum Co. 1880 Elmwood M of America Ave. Bu^-alo7 N. HALEM Rober G. WJ 1571 Undercliff Ave. Bronx 53 N. Y. Babcock & Wilcox Co. HALL CHINA CO John T. Hall East Liverpool Ohio HALL Donald H. 112 Barton St Rochester 11 Y. HALL Douglas E. Box 736. Alfred N. HALL E. 3 M Bird & Co. Ltd Chartered Bank Bldgs Calcutta India Research Dept. HALL Everson W Park Way Ext Hall China Co. East Liverpool Ohio HALL F. P. WF Syracuse 1. Y. HALL James L. W 242 Oregon Ave. Palo Alto Materials Inc. Calif HALL John T. W Hall China Co. East Liverpool Ohio HALL Morris P. S Alton Brick Co. Box 25 Maryland Heights Mo. HALLBERG Richard C. W 236 Watson Ave. Fostoria Ohio Electric Auto Co. Spark Plug Div HALLER Percy 319 Carterknowle Rd Sheffield 11. England John G. Stein & Co. Ltd. HALLER Wolfgang K. B Inst of Silicate Research University of Toledo Toledo 6 Ohio HALLETT Crawford W. RI Ceramic Supply Co. Box 106 Crooksville Ohio HALLOIN William G. G . 1218 Broadview Blvd. Brackenridge Pa Pittsburgh Plate Glass Co. HALLSE Robert L. 514 S. Chase Ave. Lombard III HALM HALM Louise Union Francaise des Produits Refractaires 15. Rue de Milan Paris 9e France HALVONIK Frank V. G Brockway Glass Co. Brockway Pa VOL 35 No. 10 1956 HAMAKER M. R Columbia Fire Brick Co. 612 First National Bank Bldg Canton 2 Ohio HAMER Donald R 426 Elmwood Evanston 1 Lindberg Engineering Co. HAMILTON Edgar H. GI National Bureau of Standards Washington 25 D. C. HAMILTON Eldon K. Colfax Ill HAMILTON Howard G. 251 Tenth St. N. W. Apt 104 Atlanta Ga HAMILTON C. G 3422 Chestnut Hill Rd Toledo 6 Ohio Illinois HAMILTON Noble E. B 53 Benjamin Rd Belmont 78 Clevite Transistor Products Mass HAMILTON Robert M United States Gypsum Co. 300 W. Adams St. Chicago 6 Ill HAMILTON W. M. E Crane Co. Chattanooga Div 33rd and Alton Park Blvd. Chattanooga 1. Tenn HAMME Donald G. B 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. W. Australia Messrs R. Fowler Ltd. HAMMOND LEAD PRODUCTS INC William P. Wilke III 5231 Hohman Ave. Box 912 Hammond Ind HAMPEL Richard J. WJ 3752 Osceola St. St. Louis Trenton Potteries Co. Mo. HANCOCK BRICK & TILE CO James L. Child Jr. Findlay Ohio HAND Thomas R Box 450 Corhart Refractories Co. 1600 W. Lee St Louisville 10 HANDEN Jack GJ 20 Elmora Ave. Elizabeth N. J. United States Army Ky HANDWERK Joseph H. B 915 N. Prairie Ave. Joliet Ill Argonne National Laboratory HANKS Charles F. Jr. M Tennessee Clay Co. Inc. Box 894 Mt. Union Sta Alliance Ohio HANLEY CO John M. Dickey Jr. Summerville Pa HANN Douglas G. Caynton Shifnal Shropshire England British Heat Resisting Glass Co. HANNA H. H. GI Pittsburgh Plate Glass Co. 100 Mississippi Ave. Crystal City Mo. HANNA Ralph E. WI Square D Co. Molded Insulation Peru Ind HANNA Richard WJ Hartford N. Y. General Electric Div Co. HANNEKEN Henry P. G St. 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 & MFG CO R. T. Hopper One W. Central Ave. East Newark N. J. HANSARD W. Carey WI 2345 Cheshire Bridge Rd N. E. Atlanta Ga Georgia Institute of Technology HANSELL U. W Honeywell Research Center 500 Washington Ave. S. Hopkins Minn HANSEN 1. A. W Fords Porcelain Works Perth Amboy N. J. HANSEN J. E. EFI Ferro Corp. 5309 S. Distric Blvd. Los Angeles 22. Calif HANSEN John H. G Owens Glass Co. 1701 E. Broadway Toledo Ohio HANSEN Kenneth H. M 507 Edgewood Ave Columbia Mo. Consolidated Feldspar Dept. International Minerals & Chemical Corp. HANSEN Valdemar Kastrup Glasvaerk Ltd. Norrevoidg 12 Copenhagen K Denmark HANSEN Waldemar C. R Universal Atlas Cement Co. Gary Buffington Station HANSON Hans R. R 30004 W. Ten Mile Rd Ind Farmington R.R. Mich Hanson Co. HANSON James W. S Mineral Wells Clay Products Inc. Box 92. Mineral Weils Texas HARBERT Carl J. W Harshaw Chemical Co. 1945 E. 97th St. Cleveland 6 Ohio HARBISON REFRACTORIES CO C. A. Brashares 1800 Farmers Bank Pittsburgh 22 Pa Bldg HARBIN Hugh P. 134 Jersey Ln Clemson S. C. HARCOURT Edward L. M North American Mfg Co. 3810 West St. Cincinnati 27 Ohio HARDER Charles M. DF State University of New York College of Ceramics Alfred Y. HARDING John Roy 4 Greenway Horsham Sussex England Sussex & Dorking United Brick Co L HARDINGE CO INC Harlowe Hardinge York Pa HARDINGE Harlowe B Hardinge Co. Inc. York Pa HARDY Ronald G. SI Onondaga Brick Corp. Warners N. Y. HARES George B. G 15 Roosevelt St. Corning N. Y. Corning Glass Works HARGREAVES John 33 Ellers Ave. Bessacarr Doncaster England United Steel Co. Ltd. - HARGREAVES MILL LTD A. W. Cook Botteslow St. Hanley Trent England HARKER POTTERY CO Robert E. Boyce East Liverpool Ohio HARMAN C. G. WF Horizons Inc. 2891 E. 79th St. Cleveland , Ohio HARNISH John D. Jr. WI ' Westinghouse Electric Corp. Derry Pa HARNISH Mark E. 417 Peffer St. Harrisburg HARPER J. Fletcher W Union Inc 900 E. Milwaukee 1 Wisc Pa Keefe Ave HARPER Roderick L. M Harper Electric Furnace Corp. 39 River St. Buffalo 2 N. Y. HARPER Wallace T. BJ 3113-8 Trinity Ave. Los Alamos N. M. Los Alamos Scientific Lab ROSTER 45 HARR W. 01 1233 Belrose Mayfield Heights Ohio Harshaw Chemical Co. ARRELL George O. D Box 1007. Sanford NC Stany Shale Products Inc. RINGTON Henry W G 0 Staford Ave. Syracuse 6. Y. Solvay Process Div Allied Chemical & Dye Comp HARRINGTON Roy V. G 10 Beaver Ave. R.R. Beaver Dams N. Y. Corning Glass Works HARRIS CLAY CO Scroop W. Enloe Jr. Spruce Pine N. HARRIS George M. G Hanovia Chemical & Mfg Co. 100 Chestnut St. Newark 5 N. J. HARRIS Henry M. R 4114 42nd S Seattle 18 Wash U. Bureau of Mines HARRIS James E. S 4685 S. Sherman Denver Colo Robinson Brick & Tile Co. HARRIS Joe N. EJ 412 Fiorida Ave. S. E Atlanta 16. Georgia Institute of Technology Ga HARRIS Ransom S. 1 Box 695 Newark Ohio HARRISON Harold C. W 235 Webster Park Ave. Columbus 14 Ohio Westinghouse Electric Corp. HARRISON William B. 325 W. Hadley St. Milwaukee 10 Wisc BI Chalmers Mfg Co. HARRISON W. N. EF National Bureau of Standards Ind Bldg Enameled Metals Sect Conn Ave. & Van Ness St. N. W. Washington 25. D. SHAW CHEMICAL CO Carl Harbert 1915 E. 97th St. Cleveland 6. Ohio HART John M. W New Jersey Porcelain Treaton 5. N. J. Co. Box 908 HART John R. W 3810 Briggs Ave Erie Pa Erie Resistor Corp. HART Ler vD. R 707 Crompton Court Webster Groves 19 Mo. Aluminum Co. of America HART Wade J. GI 908 Lafayette Court Marion Radio Corp. of America Ind HARTFORD Thomas J. W 2783 Doresta Rd San Marino Gladding McBean & Co. HARTING Louis 1007 Main Rolla Mo. Calif HARTLEY Alva G. H. Downing & Co. Ltd. Brampton Hill Newcastle Staffs England HARTMAN F. Henry G Stouffville Ont Canada Crystal Glass & Plastics HARTSHORN T. D. EI Ltd. A. J. Lindemann & Hoverson Co. 601 W. Cleveland Ave. Milwaukee 15. Wisc HARTWIG Frederick J. Jr. RI Babcock & Wilcox Co. Box 835 Alliance Ohio HARVEY A. M. Jr. S Roanoke Brick Roanoke 5 Va : Co. Box 780 ; RVEY Edwin T. R 314 W. McPike St. Vandalia Mo. Harbison Refractories Co. R. HARVEY Malcolm 80 E. Center St. Kaysville Utah VOL 35. No. 10 1956 HASKO Stephen WI 1510 Wheaton Lane Silver Spring Md National Bureau of Standards HASSELBACH William G Libbey Glass Co. 1701 E. Broadway Toledo 5. Ohio HASSETT William A. W Radio Corp. of America Chemical & Physical Lab 415 S. Fifth St. Harrison N. J. HASTINGS Russell A. M Lindberg Industrial Corp. 2321 W. Hubbard St Chicago 12. III HATCH Robert A. B 4135 N. Beileview 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. W 1318 Tuttle Ave. Montgomery Ala Alabama State College HATHAWAY Mrs. U. G. W Alabama State College . Montgomery Ala HAUBEIN Wendell L. RJ 810 Seventh Pl China Lake Calif U. Naval Ordnance Test Sta HAUCK Charles A. RI 8838 Swinton Ave. Sepulveda Calif Marquardt Aircraft Co. HAUSER Richard E. ) 351 Moselle St. Buffalo 11. N Y HAUSLER Elwood B. Box 787. Alfred N. Y. HAUTH Willard E. Jr. B 409 Warminster Hatborn Pa International Resistance Co. HAVEKOTTE Walther L. R Firth Sterling Inc. 3113 Forbes St. Pittsburgh 30. Pa HAVELL Richard F. WV 846 N. Euclid Ave. Oak Park Ill Eagle Grinding Wheel Co. HAVENS Irvin F. R 2340 Norton Dr Augusta Ga Babcock & Wilcox Co. HAWES Samuel A. S 301 N. E. Sixth Ave. Mineral Wells Texas Texeramics Co.1 HAWK Elwin A. M Hawk Laboratories Inc R.R. 1 East Rochester Ohio HAWKINS Robert J. SI 20 Sunnyside Pl Hamburg N. Y Buffalo Brick Corp. HAWKS Ralph L. WI 525 W. Maxwell Lakeland Fla Florida Tile Industries nc HAWKS William L. R 48 Chester Circle Apt 24 New Brunswick N. J. Sayreville Clay Co. HAWS REFRACTORIES CO E. E. Slick Jr. 407 Main St. Johnstown Pa HAY John Norton Co. Research Worcester 6. Mass Lab HAY Joseph L. R Acme Brick Co. Malvern Ark Box 448 HAYDON Mary P. B 106 Ogontz Lane Oak Ridge Tenn Oak Ridge National Laboratory HAZEL GLASS CO Francis C. Flint 15th & Jacobs Sts Wheeling W V HAZEL John J. RF Republic Bldg Rm 1526 Republic Steel Corp. Cleveland 1. Ohin HAZEN E. J. GI R.R. 2 Ford City Pa Pittsburgh Glass Co. HEALY Jaes H. E 4511 N. Sherman Blvd. Milwaukee ? Wisc A. O. Smith Corp. HEATH Donald L. B Ohio Brass Co. Park & Ninth Barberton Ohio HEATLEY Sidney M. R Babcock & Wilcox Co. 105 S. LaSalle St. Chicago 3. ill HECK Frank G. R E. J. Lavino & Co. 3 Penn Center Plaza Philadelphia 2 Pa HEDDELL James V. RI 53 Decatur St. China Lake Calif U. Naval Ordnance Test Sta HEDDEN Walter A. R Batteile Memorial Institute 505 King Ave. Columbus 1. Ohio HEDGES Lee M R R.R. 4 Cedar Grove Rd Somerville N. J Manville Corp. HEDGPETH James A. S Borden Brick & Tile Co. Box Durham N. C. 1771 HEDIN Claes Olof o Malardalens Tegelbruk Stockholm 3. Sweden HEDQUIST Alfred J. W Apartado Postal 525 Guadalajara Jalisco Mexico Loza Fina S. A. HEEBNER John C. RI 88 Pierce Rd Watertown 72 Harvard Business School Mass HEFTI Franz Z^...rcherZiegeleien Postfach Z^...rich 1. Switzerland . 357 HEIDTMAN Clarence F. G National Lime & Stone Co. First National Bank Bldg Findlay Ohio HEILIGMAN H. A. RFI E. J. Lavine & Co. Box 29 Norristown Pa HEIMSOETH Werner M. Farbenfabriken Bayer Aktiengesellschaft 220 Leverkusen Germany HEINDL Raymond A. RF 4917 43rd St. N. W. Washington 16. D. HEINE H. W. S Hudson Supply & Equipment Co. 1727 Pennsylvania Ave. N. W. Washington 6. D. C. HEISCHMAN Fred E. W 106 S. Adams St Fostoria Ohio Electric Auto Co. HELBING Clarence H. G Pittsburgh Plate Glass Co. Fiber Glass Div Shelbyville Ind HELLER Enrique % Cerro de Pasco Corp. La Oroya Peru HELLIESEN Richard Pemco Corp. 5601 Baltimore 24 Md O. EI Eastern Ave. HELM David F. B Meilon Institute 4400 Pittsburgh 13 Pa Fifth Ave. HELMKAMPF R. N. G Christy Co. Div H. K. Porter Co. 2000 Hampton Ave. St. Louis 10. Mo. HELSER Perry D. WFI o Forrest Clum Thornville Ohio Consultant HELZ Armin W. B 20 Maryland Ave Gaithersburg Md U. Geological Survey HEMBERG Per Surte Glasswork Surte Sweden HEMSTEGER Samuel E. EI 4155 Audubon Rd Detroit 24 Mich Pemco Corp. ROSTER 47 HENBY E. B. M National Engineering Co. Simpson Muller Div 549 W. Washington Blvd. Chicago 6. ! HENDERSON HENDERSON Frank P. 12 Mockingbird La Tyler Texas jerro Corp. Allied Engr Div HL JERSON Frederick C. WFI Royal China Inc. Sebring Ohio HENDERSON James L. Jr. S Robinson Ventilating Co. Zelienopie Pa HENDERSON William W. M Robinson Ventilating Co. Box 217 Zelienople Pa HENDREN Robert R. RI 105 Bank Ave. Riverton N. J. Hoeganaes Sponge Iron Corp. HENDRYX Dwight B. S Dwight B. Hendryx & Associates 6621 Darlington Rd Pittsburgh 17 Pa HENKEL Car F. Jr. G Corning Glass Works Corning N. HENRAR J. M. G. N. V. Porselein en Tegelfabriek MOSA MAASTRICHT Meerssenerweg Maastricht Netherlands HENRY Edward C. BFI 730 Crawford Ave. Syracuse 10 General Electric Co. HENRY Frank R. RF Simonds Worden White Co. 1101 Negley Pl Dayton 7 Ohio X. HENRY Georges Directeur General / Union des Verreries Mecaniques Belges 29 Quai de Brabant Charleroi Belgium HENRY Kenneth M. GF Illinois 1700 N. Westwood Ave. Box 1035 Toledo 1. Chio i LER J. R. G hemical Research Lab Bausch & Lomb Optical Co. Rochester 2 Y. HENSON Charles W. R Norton Co Worcester 5 Mass HENWOOD Reginald J. R 9444 Lynnhaven Rd Cleveland 30. Ohio Republic Steel Corp. HEPPLEWHITE J. W. WFI 13557 Cedar Rd Cleveland 18. Ohio Ferro Corp. HERBERT John S. S W. Bush & Co. 174 Third Ave. N. Nashville 3 Tenn HERBERT John W. W 3523 Anderson Pky Toledo Brush Electronics Co. Ohio HERBERT Paul R. W Sandyville Ohio Stylon Corp. HERBST Richard J. 1619 Glenwood Ave. Joliet Ill HERGER Howard C. G Pierce Glass Co Port Allegany Pa HERKO Edward GI 392 Magee Ave. Rochester 13. N. Y. Bausch & Lomb Optical Co. HERMAN Clarence E. 222 Hillcrest Rd Raleigh N. HERMANN Gunter Wheaton Do Brasil S. A. Caixa Postal 1461. Sao Paulo Brazil HERMANN James L. W 3288 Earimar Dr. Los Angeles 64 Calif Redondo Tile Co. H_NOLD Paul G. BFI Radio Corp. of America Chemical & Physical Lab Lancaster Pa VOL 35 No. 10 1956 HERPEL Clarence M. Southern Brick & Tile Inc. Cherokee Station Box 5 Louisville 5 Ky HERRON Rober H. R 1634 N. Ironwood Dr. South Bend Inc. Bendix Products Div HERTZELL E. A. S 1111 Chestnut St. Dover Ohio American Vitrified Products Co. HESS B. Parker G Westinghouse Electric Corp. 700 Braddock Ave. East Pittsburgh Pa HESS F. B. G Brockway Glass Co. Inc. Brockway Pa HESS Robert L. R 44 Hess Blvd. Lancaster Pa Armstrong Cork Co. HESSINGER 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 Ironton Fire Brick Co. Ironton Ohio HEWLETT James Thomas E Richardson Inc. Frankfort Ind HICKS James C. BI 27550 Edgerton Rd Los Altos Kaiser Aluminum & Chemical Calif Corp. HICKS John F. G. G 131 Thompson Dr Painted Post N. Y. Corning Glass Works HICKS Robert G. E 608 21st Bettendorf Iowa Herman Nelson Div AAF HIGGINS Ray W 191 Overlook Ave. Wadsworth Ohio Ohio Brass Co. HIGGINS Waido W. EFI A. O. Smith Corp. Bex 534 Milwaukee 1. Wi HIGGS Harold P. B Automatic Manufacturing Co. 63 Gouverneur St. Newark 4. N. J. HIGHLEY Robert W. R Richard C. Remmey Son Co. 2882 W. Liberty Ave. Pittsburgh 16. Pa HIGMAN JOHN W. CO Robert J. Stone 24 State St. New York 4. N. Y. HILDEBRAND David W R.R. 3. Hixson Tenn American Lava Corp. HILL David C. Box 787 Alfred N. Y. HILL Ercell C. SF 109 Morton Ave. Apt 5 Ridley Park Pa HILL John R. S 806 Scenic Dr. Charleston W. Va Charleston Clay Products Co. HILL Lawrence I. G 507 Carver Blvd Toledo 7. Ohio Libbey Glass Co. HILLING James ... Jr. 129 Maple Ave. Altoona Pa HINCKLEY Arthur T. R Okibury Chemical Co. Niagara Falls Y. HIND Stanley The Mount Etruria Rd Basford Trent England Consulting Engineer HINDES Stanley V. M 88 Union Ave. Pittsburgh 5 Pa Perco Corp. HINDS J. F. G Canadian General Electric Co. 221 Dufferin St. Toronto 3. Ont Canada HINES Robert A. B 8729 Radley Ct Brentwood 17. Missouri Portland Cement Co. Mo. HINKINS E. A. G Tygart Valley Glass Co. Box 503 Washington Pa HINTZE Woilmar son Agatan 12. Bromolla Sweden A. B. fovarken HIRSSIG Carl F. 1210 For St. Maumee Ohio National Lime & Stone Co. HHISCOCK Harley J. R Fuller Merriam Co. Box 69 West Haven 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 Union Inc. 900 E. Keefe Ave. Milwaukee 1. Wisc HOARE Henry A. W 2655 Sharondale Dr. N. E. Atlanta Ga Georgia Sanitary Pottery HOBSON Joe P. S Acme Brick Co. Box 425 Inc. Fort Worth 2. Texas HOCH Arthur E. W Pacific Co. 330 W. Citrus St Colton Calif HOCH Michael B University of Cincinnati Dept. Chem & Met Engr Cincinnati 21. Ohio HOCKING William J. W 1612 Pennsylvania Ave. East Liverpool Ohio Hall China Co. HODGDON Frank B. B Box 4132 N. Chattanooga Sta Chattanooga 5. Tenn Tennessee Products & Chemical Corp. HODGES Leslie R. Jr. Box 1409 Atlanta Ga HODSON George N. The Hall Wymeswoid Nr Loughborough England Hathermware Ltd. HODSON jean E. 4203 Brooklyn Seattle 5 Wash HOEHL Joseph W. E Wolverine Porcelain Enameling Co 3350 Scotten Ave. Detroit 10 Mich HOELSCHER Max W. E 5010 Mayfield Rd Lyndhurst 24 Ohio Enamel Products Corp. HOENIG Clarence L. 4325 Lawn Ave. Western Springs III HOEY Paul E. S Texas Vitri^-ed Pipe Co. Box 117. Mineral Wells Texas HOFFMAN Sidney C. G 1646 Lindy Lane Lexington Ky Sylvania Electric Products Inc. HOFFMAN Willard H. J. M 8 Dungarrie Rd Baltimore 28. Md Clinchfield Sand & Feldspar Corp. HOFFNER Jere R. G T. C. Wheaton Co Millville J. HOFSTETTER G. W. E Ferro Corp 336-338 N. Central Ave Chicago 44. III HOGAN Thomas W. W Flintridge China Co. 350-380 S. Raymond Ave. Pasadena 1. Calif HOGARTH William Jr. Box 3829 Georgia Tech Atlanta Ga HOGENDOBLER H. R. G Gustin Manufacturing Co. 3031 Fiberglas Rd Kansas City Kans HOGENSON William E Chicago Vitreous Corp. 1425 S. 55th Court Cicero 50. III HOHMANN Frederick R. G 1012 Parkview Ave. New Kensington Pa Pittsburgh Plate Glass Co. ROSTER 49 OLADY Harold W. Box 16. Ephrata Wash OLDEN Robert B. B Sylvania Electric Products Atomic Energy Div Box 59. Bayside NY NY NER Cc Irwin K. E ? Bayside Dr. Dayton 3. Ohio wright Patterson AFB OLL Barton A. S Logan Clay Products Co. Box 698 Logan Chio OLL Barton S. Si 311 W. Front St. Logan Ohio Logan Clay Products Co. OLLEY Kenneth E. R 113 Pritchard Ave. Corning N. Y. Corning Glass Works OLMES Gregory J. Rutgers University Box 215 New Brunswick N. J. OLMES Lyle A. 30 82 Pilgrim Rd Rosslyn Farmis Carnegie Pa Great Lakes Foundry Sand Co OLMES Roland G. S W. S. Dickey Clay Mfg Pittsburg Kans Co. Box 402 OLMSTROM Joseph H. RI 11211 Washburn Ave. S. Bloomington 20 Minn General Refractories Co. OLSCHER H. H. GF Illinois Box 1035 Toledo , Ohio OLST Tage Vinkelvej lo Kongens Lyngby Denmark Porcelaensfabriken Danmark A OLTERHOFF A. Gray M National Sales Corp. 307 E. Fourth St. Cincinnati 2. Ohio OLZMAN George R. G Mellon Institute 4400 Fifth Ave. M. sburga Pa C EL E. EF Q. HommelCo Box 475 Pittsburgh 30. Pa Pittsburgh COMMEL O CO Box 475 E. M. Hommei 30 Pa OMVELD G. H. A. Av La Colina Quinta Alicia Los Chaguaramos Caracas Venezuela CONSBERG Werner W Apartado 508. Mexico D. F. Mexico Fabrica de Loza El Anfora S. A. OOD Clyde G Leeds & Northrup 1922 E. 107th St. Cleveland 5 Ohio Co. HOOD Harrison P. GF 260 Delevan Ave Corning N. Y. Corning Glass Works OOD L. Scott I Orton Ceramic Foundation . 1445 Summit St. Columbus Ohio HOOP M. C. d N. V. Royal Delft Ware Manufactory De Porceleyne Fles h Joost Thooft & Labouchere 196 Rotterdamscheweg Delft Holland OOPER Bradford R 5 Point O'Woods Lane Darien Babcock & Wilcox Co. Conn OOTON Norris A. Box 567 Clemson S. C. OOVER Charles H. R 609 Wilton Rd Towson 4 General Refractories Co. {Cc NS Robert W. GI amite Co. Box 151 amilton Ohio Md OPPER R. T. D Hanovia Chemical & Mfg Co. 1 W. Central Ave. East Newark N. J. OL 35 No. 10 1956 HORAK William RFI 223 Raymond Rd West Hartford 7 Conn Hartford Empire Emhart Mfg Co. HORNER M. Harian Div 4757 17th N. E. St Seattle 5 Wash HORNING Roy A. GFI Armstrong Cork Co. Lancaster Pa HORNUNG Martin R. WT 140 E. Sheridan Ave. New Castle Pa Shenango China Inc. HORTON Paul B. WI Insulator Dept. General Electric Box 57 Baltimore 3 Md Co. HOSBEIN Roger L. R 13 Standish St. Frostburg Md Big 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 HOUSMAN Alfred George SN.. Y. R Box 17 Norristown Pa HOUSTON M. Dean 507 Linden Rd State College Pa HOUZE Armand L. Jr. G Houze Glass Corp. Poin Marion Pa HOWARD Harold B. 828 S. Ellis St. Salisbury N. HOWAT Walter L. DF Walter Howat Decorative Ceramics 85 Hopping Ave. Staten Island 7 HOWATSON John G University of Wyoming Chemistry Dept. Laramie Wyo Y. HOWATT Glenn W Bldg 6-5 Apt 3. Redfield Metuchen N. J. Glenco Corp. Village HOWE Elroy E. EFI Chicago Vitreous Corp. 1425 S. 55th Court Cicero 50 Ill HOWER Lawrence D. Jr. RI Raybestos Div 75 E. Main St. Stratford Conn HOWER R. S. BI Bradley Co. 136 W. Greenfield Ave. Milwaukee 4 Wisc HOWIE Thomas W. Campbell & Co. Roughcastle Ltd. Roughcastle Works Falkirk Scotland HOYET Eugene G R. R. 2. Box 332 Tarentum Pa Pittsburgh Plate Glass Co. HSU hua 1. King's Terrace 1st Floor Kowloon Hongkong B.C.C. Kiu Foong Enamel Factory H.K. 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 Y. WARCO CO AMERICAN CLAY MACHINERY DIV Bucyrus Ohio HUDSON Charies 2 R 74 Newton St West Boyiston Mass HUDSON SUPPLY & EQUIPMENT CO H. W. Heiner 1727 Pennsylvania Ave. Washington 6. D. HUETTIG Fred R. WI W 296 Brock Ave North Plainfield N. J. General Ceramics Corp. HUFFCUT Harold W. G Westinghouse Electric Corp Electronic Tube Div Box 284 Elmira N. Y. HUGHES George B. E 236 Indiana Ave. Dayton 10. Ohio Frigidaire Div General Motors Corp. HUGHES Walter M. WI 534 Putnam Ave. Zanesville Ohio Chicago Standard Transformer Corp. HUGHEY Vaughn V. B Basic Inc. Maple Grove Ohio HUI William L. C. B Radio Corp. of America Tube Div Marion Ind HUKE Frank B. R Norton Co One New Bond St. Worcester Mass HULL J. Brannon W Hull Pottery Co. 327 Amerine St Crooksville Ohio HULL POTTERY CO J. Brannon Hull 327 Amerine St. Crooksville Ohio HULSE Charles O. 2240 Dwight Way Berkeley 4 HUMENIK Michaei Jr. B 28477 Parkwood Dr. Inkster Calif Mich Ford Motor Co. HUMMEL Floyd A. B College of Mineral Industries Pennsylvania State University University Park Pa HUMMEL Richard G 615 Olympia Rd Pittsburgh 11 Pa Harshaw Chemical Co. HUMMEL Roy W 4318 Grantley Rd Toledo 13 Ohi Champion Spark Plug Co. HUMPHREY Richard A. W Mycalex Corp. of America Box 311. Clifton N. J. HUMPHRYES MANUFACTURING CO D. J. Jones 201 E. Fifth St. Mans^-eid Otio HUND George J. W 227 Poplar Ave. N. W. Canton Sparta Ceramics Co. HUND Ralph R Speer Carbon Co. Theresia St. St. Marys Pa HUNGERFORD R. M. X Ohio Clayburn Co. Ltd. 850 W. Hastings St. Vancouver 9. B. C. Canada HUNT Charles W. W 154 Vincent St. Chagrin Falls Ohio Certain Products Corp. HUNT Herbert J. G Kimble Glass Co Vineland N. J HUNT John F. MI Carpco Engineering & 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. EI 414 Randolph Rd Plainfield N. J. General Ceramics Corp. HURD Burgess M. W 3 Windy Crest Rd Beaver Falls Pa Ceramic Color & Chem Mfg Co. ROSTER 51 HURLEY Robert E. B 469 Camden Ave. Moorestown Burlington County N. J. RCA Victor HURLEY T. P. B Sprague Electric Co. North Adams Mass T. Erwin J. W neral Ceramics Corp. Plant 3. Research Dept. Keasbey N. HURST Thomas L. R Monsanto Chemical Co. Everett Sta Boston 49 Mass HUTCHINS John R. III Massachusetts Institute of Technology Rm 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 Steel Co. HUTT Glenn A. EF 19629 Scottsdale Blvd. Shaker Heights 22 Ferro Corp. HUTT Gordon M. R Ohio Canadian Pacific Railway 703 Wincisor Station Montreal 3. Que Canada HUYCK L. G. E Huyck Construction Co. 1861 DeCook Ave. Park Ridge Ill HYATT Edmond P. 3499 Fleetwood Dr. Salt Lake City 9 Utah HYDE Collin RI 581 Oxford St. Worthington Ohio Battelle Memorial Institute HYLAND J. A. E Pacific Coast Borax Co. 3456 W. Peterson Ave. Chicago 45. III HYNES Frank J. WI bow Rd Wayland Mass aytheon Mfg Co. HYOLLE HYOLLE Andre Societe Generale de Carreiages 37. rue Leon Blum Feignies Nord France MYSLOP Joseph F. Dromore Major's Loan Falkirk Scotland J. G. Stein & Co. Ltd. ANDER J. Richard M Ceramic News 509 S. Beverly Dr. Beverly Hills Calif ICHIKAWA Yoshio W 1903 Hanover St Apt 10 Pittsburgh 18. Pa Westinghouse Electric Corp. IHRIG Allen C. G 127 Corning Blvd. Corning N. Y. Corning Glass Works LES Ramon R. G 2223 St. James Ct Owensboro Ky General Electric Co. ILIFF Fred K. W Harshaw Chemical Co. Jackson & Swanson Sts Philadelphia 48 Pa ILLING Arno M. W 5412 Laconia Cincinnati 37 Ohio Cambridge Tile Mfg Co. ILLINOIS CLAY PRODUCTS CO Howard F. West 68 N. Chicago St. Joliet III ILLYN Alexis V. 183 Bevier Rd University Heights w Brunswick N. J. IX F Edward J. M - nited States Glass Co. Glassport Pa MMEDIATO Robert R. WI Sprague Electric Co. Nashua N. H. VOL 35 No. 10 1956 INDIAN CERAMIC SOCIETY H. N. Roy Dept. of Ceramics Benares Hindu Univ Benares India INDIANA GLASS CO Dunkirk Ind INDUSTRIAL CERAMIC PRODUCTS INC C. R. Oberst 965 W. Fifth Ave. Columbus 8 Ohio INGERSOLL Harry E 455 S. Catalina St. Los Angeles 5 Calif Penco Corp. INGHAM David W Box 546. Kittanning Pa Eljer Division RICHARDSON INC R. H. Coin Jefferson Rd Frankfort Ind INSLEY Herbert BF 5219 Farrington Rd Washington 16 D. C. Consulting Mineralogist INSLEY Robert H. B Champion Spark Plug Co. Ceramic Div 8525 Butler Ave. Detroit 11 Mich INSTITUT de CERAMIQUE FRANCAISE Louis Desmarquest 6 Grande Sevres S. & O. France Insulator General Electric Co. INTERNATIONAL CLAY MACHINERY CO R. H. McElroy 1145 Bolander Ave Dayton 1. Ohio INTERNATIONAL COMMISSION ON GLASS B. P. Dudding 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 Ironton Ohio IROQUOIS CHINA CO Robert E. Andersoni 2320 Milton Ave Syracuse 9 Y. IRVINE George C. WI Canadian Carborundum Co. Ltd. Niagara Falls Ont Canada IRWIN Joseph T. E 1618 Elmwood Ave. Lakewood 7. Ohio Consultant IRWIN Philip P. W Potters Supply Co. East Liverpool Ohio IRWIN William W. W Potters Supply Co. 11 Washington St. East Liverpool Ohio ISAACS Richard P. M 78 Elmwood Dr Livingston N. J. Hammill & Gillespie Inc. ISAGAWA Jun Nippon Toki Kaisha Ltd. # Noritakeshinmachi Nishiku Nagoya Japan ISELIN Charles W. GJ Thatcher Glass Manufacturing Elmira Y. Co. ISENHOUR C. W. Jr. S Isenhour Brick & Tile Co. Box 1249 Salisbury N. ISENHOUR John H. SF 215 Confederate Ave Salisbury Isenhour Brick & Tile Co. N. ITO Shozo Nippon Gaishi Kaisha Ltd. 1. Chome Horita Mizuho 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 JABEUSCH Arthur J. S Pomona Terra Co. Greensboro N. JACKSON A. Curtis SFI Robinson Brick & Tile Co. 500 S. Santa Fe Dr. Denver Colo JACKSON James Avonhaugh Stonehouse Lanarkshire Scotland JACKSON Mary A. 486 Boynton Ave. Berkeley 7 JACKSON TILE MFG CO R. T. Lowrance Box 2006 Jackson Miss JACKSON VITRIFIED CHINA Philip R. Distillator 2 West 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. Calif CO St. Mermaid Lane & Queen St. Philadelphia 18 Pa JACOBI James H. E Avco Manufacturing Corp. Crosley Home Appliances Dept. 474 Nashville 1. Tenn JACOBS Charles W. F. W 19 A Longmeadow Rd Eggertsville 23 N. Y. Titanium Alloy Mfg Div National Lead Co. Div JACOBS H. Box 117 Vereeniging Transvaal South Africa JACOBS Louis J. R Ramtite Co. 2563 W. 18th St. Chicago 8. H. JACOBS Richard A. G Brockway Glass Co. Inc. Brockway Pa JACOBSON Ed E Maytag Co Newton Iowa JACOBY William R. 241 Upson Lane University New Brunswick N. J. JAFFE Bernard BI 1238 Hinsdale Rd Heights South Euclid 21. Ohio Clevite Research Center JAMESON Robert J. G Owens Glass Co. 1701 E. Broadway Toledo 5. Ohio JAMISON C. Donald Jr. R Koppers Co. Inc. Eng & Const Div Koppers Bldg Pittsburgh 19 Pa JANKE Charles E. S 4633 Horton Rd Garfield Heights 25 Ohio Cleveland Builders Supply Co JANKOWSKI Charles R. 16 Hakes Ave. Horneil Y. JANSEN Gerard F. Box 2517. Georgia Tech Atlanta Ga JANSMA Frank M B. F. Drakenfeld & Co. Washington Pa Inc. 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 53 JENNINGS James W. E Quaker Silver Co. Inc. North Attleboro Mass JENSEN Edwin K. E 11255 Minden Ave. Detroit 5. Mich Briggs Mfg Co. SEN Robert O. S Natco Corp. Waynesburg Ohio JEPPSON George N. RF Norton Co. One New Bond St. Worcester 6. Mass JERO Parker E 932 Birchwood Dr. Washington Ill Caterpillar Tractor Co. JERVIS Julian S. : 750 Fowler St. N. W. Atlanta Ga JHUNJHUNWALA K. P. J Orissa Industries Ltd. P. O. Barang Dist Cuttack Orissa India JIMMERSON James E. S Henderson Clay Products Box 870 Henderson Texas 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 & Wunderlich Ltd. Lord St. East Perth West Australia JOHNSON Alton E. WI 4903 N. 53rd St. Milwaukee Wisc Union Inc. JOHNSON A. L. WF . Universal Corp. W. Keith McAfee Lab Box 1268 Mahoningtown Pa JOHNSON A. M. R Tacony Crucible Co. Robbins & Milnor Sts Philadelphia 35 Pa JOHNSON Ben SJ 5224 Valley Oak Dr. Austin 3 Texas University of Texas INSON Boyd M. R Carborundum Co. Box 268 Perth Amboy N. J. JOHNSON Bruce M. 353 Highland Dr Seattle 9. Wash JOHNSON David M. BJ 510 Southland Blvd. Louisville 14. Ky Corhart Refractories Co. Inc. JOHNSON Dudley B. E Glascote Products Inc. 20000 St. Clair Ave Cleveland 17. Chio JOHNSON Earle K. S Eureka Brick & Tile Co. Box 338 Clarksville Ark JOHNSON Elwin L. 1107 W. Green St. Apt 225 Urbana III JOHNSON Fred H. Jr. S Summitville Ohio Summitville 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 Corning Glass Works Corning N. Y. JOHNSON J. A. Progress Engineers Ltd. Leek New Rd Cobridge Bursiem Trent England JOHNSON James E. WJI 3173 Herrick Rd Columbus Ohio United States Air Force JOHNSON James R. BI * Oak Knoll Dr. White Bear Lake 10. Minn + Minnesota Mining & Mfg Co. JOHNSON Keith A. 3722 Warren St. N. W. Washington 16 D. C. VOL 35 No. 10 1956 JOHNSON Keith N. 441 Westwood rAmes Iowa JOHNSON Larry R. 3529 Ivy Rd Atlanta Ga JOHNSON LeRoy A. E 1206 Cleveland St. Evanston Ill Chicago Vitreous Corp. JOHNSON Norman W. ( R Eaton Manufacturing Co. 9771 French Rd Detroit Mich JOHNSON Paul V. SF Structural Clay Products Research Foundation Geneva Ill JOHNSON William A. E 7269 Greenleaf Ave. Cleveland 30 Ohio Ferro Corp. JOHNSTON J. G. Leeds Fireclay Co. Ltd. Wortley Leeris 12 England JOHNSTON James K. M R. R. 5. Hagerstown Md Fairchild Aircraft Div JOLLEY Robert W. R 10 Ox Bow Lane Bloom^-eldConn Hartford Co. JONES Cecil M. II R Box 65 Greendale Sta Worcester Mass Norton Co. JONES D. J. W Humphryes Mfg Co. 201 E. Fifth St. Mansfield Ohio JONES Frank L. G Koppers Co. Inc Box 128 Verona Pa JONES George A. W 3411 Central Ave Parkersburg W. Va United States Ceramic Tile Co. JONES Glen A. B Shreve Manufacturing Co. Shreve Ohio JONES Howard E Jr. R 19150 Robson Detroit 35. Mich Mundle & Co. JONES Maynard J. E Pauler Co 1000 West Ave. Rochester 11. Y. JONES METAL PRODUCTS CO Edwin F. Mulligan West Lafayette Ohio JONES Paul R. X West Virginia University Dept. of Chem Engr Morgantown W. Va JONES Raymond B. W National Tile & Manufacturing Co. 1200 E. 26th St. Anderson Ind JONES Richard E. R Pittsburgh Plate Glass Co. Research Laboratory Creighton Pa JONES Robert O. R Standard Slag Co. Box 3. Gants Nev JONES Roger D. R 28 Cushing Pl Buffalo 20. N. Y. Electro Refractories & Abrasives Corp. JONTZ Melvin L. M 5028 Alhambra Ave. Los Angeles 32. Calif Melvin L. Jontz Co. JORDAN John N. G Consumers Glass Co. Ltd. Box 456 Station B. Montreal Que Canada JORDAN John W. M Baroid Div National Lead Co. Box 1675 Houston 1. Texas JORDAN R. E. Jr. W Mosaic Tile Co. Zanesville Ohio JORDAN Thomas B. S Mosaic Tile Co. 829 N. Highland Ave. Hollywood 38. Calif JOVA BRICK WORKS J. L. Jova Roseton N. Y. JOVA J. L. S Jova Brick Works Roseton N. Y. JOYNER Bobby L. W Erie Resistor Corp. 644 W. 12th St. Erie Pa JUDKINS Rober W. W Wilbur B. Driver Co. 1875 McCarter Hwy Newark N. J. JUELSS David M American Lead Pencil Co. 500 Willow Ave. Hoboken N. J. K KACICZ Joseph M. Jr. 210 Clinton Rd West Caldwell N. J. KADEY Frederic L. Jr. B 1825 Quimby Lane Westfield N. J. Manville Corp. KAHLSON W. S. G General Electric Co. Lamp Dept. Pitney Glass Works Nela Park 12 Cleveland Ohio KAHN Max G 4932 Oleander Dr. Wilmington N. KAISER Leonard F. G 332 E. Wayne St. Maumee Ohio Owens Glass Co. KAISER William E. 3103 Bellwood Ct Apt 11 Columbus Ohio KALLUP Charles Jr. WI Helipot Corp. 916 Meridian Ave. South Pasadena Calif KALMAN Frank R. EI 2014 Baxterly Rd Lakewood 7 Ohio Pemco Corp. KALMBACH William J. G Kimble Glass Co. 1700 N. Westwood Ave. Toledo Ohio KALOUSEK George L. G 2633 Merrimac Blvd. Toledo 6 Ohio Illinoisi KAMICH Barnet Z. B 11 Garwood St. South River N. J. Army Ordnance Corps KAMLER Anthony R. 713 Seventh Ave. Ford City Pa KANAZAWA Edward 12338 Sylvan St. North Hollywood Calif KANE John L. W 8457 Wicklow Ave. Cincinnati 36. Ohio Cincinnat Milling Machine Co. KANTOR Ne I. W 198 Mason Dr Metuchen N. J. Crowley Div Aerovox Corp. KAPADIA Homi E 302 N. Fourth St Niles Mich ! Kawneer Co. KARKHANAVALA M. D. 239. Botawala Bldg Tardeo Bombay 7. India Atomic Energy Commission KARNAS John S. 718 Echo Ave. Zanesville Ohio KASSEL Rober W Lenox Inc Pomona N. J. KASSEES John S. B American Testing Lab Inc. Box 1421. Lancaster Pa KAST Edward T. 7 os Box 847 Alfred N. KASTEN Vernon L. WI Three Oaks Box 84 Jackson Ceramo Co. Inc. Mo. 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 Kenz Terrace West Orange N. J. KAUFFMAN John R. MFI 160 Fairview Ave. Elmhurst III Tuttle & Kift Inc Subsidiary Ferro Corp. KAUFFMANN Otto T. W Frontenac Floor & Wall Tile Ltd. Kingston Ont Canada KAUTZ Kari EFI 24 Leon Rd Pittsburgh 20 Pa Vitro Mfg Co. ROSTER 55 KAY William T. R E. J. Barteils Co. 1212 Sixth Ave. S. Seattle 4 Wash KAYSER Julius A. R Gladding McBean & Co. 2901 Los Feliz Blvd. jos Angeles 39. Calif NEY C. G 1201 Banksville Rd Pittsburgh 16 Pa National Lime & Stone Co. KEANEY Joseph C. Jr. G Feldspar Corp 1201 Banksville Rd Pittsburgh 16. Pa KEANEY Robert C. G St. Lawrence Fluorspar Inc. 1201 Banksville Rd Pittsburgh 16 Pa KEARNEY John P. G 2723 Densmore Dr. Toledo 6 Ohio Kimble Glass Co. KEBLER Leonard E Ward Leonard Electric Co. Mt. Vernon N. KEEFE Robert M. R 133 Puritan Rd Plymouth Meering Pa Mullite Refractories Co. KEEFER George E. G Illinois Technical Center 1700 N. Westwood Ave. Toledo 1 Chio KEENER Harry T. R. R. 3 Minerva Ohio KEHL Nelson H. RI E. J. Lavino & Co. Box 29 Norristown Pa KEIM Laurence A. G 144 Cochran Rd Pittsburgh 28 Pa Pittsburgh Plate Glass Co. KEITH Miss L. C. Canadian Ceramic Society 49 Turner Rd Toronto 10 Ont Canada KEITH Wendell P. RI 1234 E. Marvista St. Whittier Calif W. P. Keith Co. LLER Francis Pfungen Switzerland Keiler & Cie A.G. KELLER George W. G Illinois 1700 N. Westwood Ave. Toledo 7 Ohio KELLY Austin J. E Gucipa Stove Co. Ltd. Guelph Ont Canada York Rd KELLY George D. E 1100 Dublin Rd Columbus 12 Ohio Battelle Memorial Institute KELLY Hal J. R 6025 52nd N. E. U. S. Bureau of Seattle 5. Mines Wash KELLY John V. R Kaiser Steel Corp. Box 217 Fontana Calif KELLY Joseph F. R 301 Braddock Ave. Lansdowne Pa Naval Boiler & Turbine Lab KELLY William J. WI Box 265 Hondo Texas Universal Corp. KELSEY V. V. MF Dominion Minerals Div Riverton Lime & Stone Co. Piney River Va Inc. KELTON Stanton C. Jr. G Rohm & Haas Co. Bristol Pa KEMP John A. Jr. W 1414 Hickory Ave. American Torrance Calif KEMPF William C. RI 28 Homer Pl Meruchen N. J. Carborundum Co. ENAGY Lloyd N. RJ Claysburg Pa General Refractories Co. KENAGY William L. RFI 770 Fetters Mill Rd Huntingdon Valley Pa Simonds Abrasive Co. VOL 35 No. 10 1956 KENDALL Thomas A. S University of Kentucky College of Eng Lexington Ky KENDRICK Thomas B. G Lancaster Lens Co. 220-225 W. Main St. Lancaster KENNEDY Richard W. W Star Porcelain Co. Obiu Box 1329 Trenton 7. N. J. KENT Joseph P. WI 247 Starr St Brooklyn 37 N. Y. Leviton Mfg Co. Inc. KENT N. Johnson RI Manville Sales Corp. 22 E. 40th St. New York 16 N. Y KENT William B. MI 115 W. Main St. Apt 4 Alliance Ohio Tennessee Clay Co. Inc. KENTUCKY CLAY MINING CO W. J. Watkins Mayfield Kv TENNESSEE CLAY CO INC Chester Gulick Mayfield Ky KENWORTHY Orville O. B 1486 Arthur Ave Lakewood 7 Ohio Ferro Corp. KENYON Clark W Frenchtown Porcelain Co. Frenchtown N. J. KEPKA George M. MI Braun Corp. 1363 S. Bonnie Beach PI Los Angeles 54 Calif KEPLINGER Robert B. RFI Carroll Clay Co. Box 56 Carrollton Ohio KERINS M. P. Jr. E Stauffer Chemical Co. 380 Madison Ave. New York N. Y. KERLA Hans R 525 Beaumont Ave. Baltimore Baltimore 12 Md Kerloid Corp. KERPER Matthew J. BI National Bureau of Standards Div 9.2 Washington 25. D. KERR Charles H. GF 2361 Chatsworth Blvd. San Diego 6 Calif KERR John M. 228 N. Purdue Apt 109 Oak Ridge Tenn KERR W. Raymond RFI Armstrong Cork Co. Box 441. Beaver Fails Pa KERSHNER William G. WI 117 S. 14th St Olean Y. Olean Tile Co. KESKI James R. 8610 44th Ave. .. Seattle 18 Wash KESSEL David J. 902 W. Green Urbana Ill KESTER Ralph G. G 1394 June Dr. Maumee Ohio Kimble Glass Div Owens KIBLER H. W. W Southern Potteries Inc. Box 279 Erwin Tenn KIEHL Harry R. G 223 Chemung St. Corning N. Y. Corning Glass Works KIESOW Paul F. G Forest Hills Dr. Elmira N. Y. Westinghouse Electric Corp. KILCOYNE John R. W Canadian Porcelain Co. Ltd. Box 428 Hamilton Ont Canada KILGORE CERAMICS CORP D. H. Walkup Box 1619 Kilgore Texas KILLMAR 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 Blacksburg Va Tech Station KIM You S. North Carolina State College Box 3540. Raleigh N. KIMBLE GLASS CO H. Black ' 1700 N. Westwood Ave. Toledo Ohio KING Burnham W. Jr. EFI 2234 Lane Rd Columbus 14 Battelle Memorial Insuture KING Charles B. G Ohio 189 Cedar St Corning N. Corning Glass Works KING Harry M. M 439 Washington Pl Sycamore Ill Corps of Engineers U. S. Army KING R. M. EFI Lord Hall Ohio State Univ Columbus 10. Ohio KING Robert G. W 143 N. Center St. Grove City Pa Vitro Mfg Co. KING Robert M. 307 S. Victor Champaign Ill KING Walter F. M 365 Arborica 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. Corning Glass Works KIRCHER Paul J. G Maryland Giass Corp. 2147 Wicomico St. Baltimore 30. Md KIRCHER Wolfgang 22b Eisenberg Tiefenthalerstr 16 Germany Messr Werke A.G. KIRCHNER Henry P. Jr. B Corning Glass Works Corning NY KIRKENDALE G. A. I c American Embassy Aviv Mail Room Dept. of State Washington 25. D. KIRKPATRICK Frank WFI 840 Strand Hermosa Beach Calif Gladding McBean & Co. KIRKPATRICK Harry E. E National Bureau of Standards Div 9. Washington 25. D. KLANE Frank G Corning Glass Works Corning N. Y KLAUS Irving W 137 Winthrop Rd Washington Nixon N. 7 Permadent Products Inc. Park KLAUS Sol C Jr. W 50 S. Munn Ave. Apt 804 East Orange N. J. Automatic Mfg Corp. KLEEMAN Lee A. R 2210 Briargien Apt 3 - Houston 27 Texas Harbison Refractories Co. KLEIN Jonathan D. Massachusetts Institute of Technology Rm 4-051 Cambridge Mass KLEINHANS C. J. E Porcelain Metals Corp. 1400 S. 13th St. Louisville 10 Ky KLEKOTKA Joseph F. G 3601 Reed St. Philadelphia 46 Pa Philadelphia Naval Base KLEVENS H. B. G Mellon Institute University of Pittsburgh Pittsburgh 13 Pa KLEYMEYER Clifford A. S Standard Brick & Tile Corp. 123 N. W. Fourth St. Evansville 8 Ind KLIMAN Morton I. 6 Sutton St. Mattapan 26 Mass KLINDER Thomas W. Box 827 Alfred N. Y. KLINE Hugh L. R Corhart Refractories Co. Inc. 1600 W. Lee St. Louisville 10 Ky ROSTER 57 KLINEFELTER T. A. RFI 2116 F St N. W. Washington 7. D C. KLINGSBERG Cyrus 503 Linden Rd State College Pa KLIPPER Joseph My Clipper Diamond Tool Co 1 345 Hudson St New York LOCKE Edward J. M Inc. 14 Y. H. Spinks Clay Co. Inc. 1000 First National Bank Bldg Cincinnati 2. Ohio KLOCKNER Herman Richard E Universal Corp. W. Keith McAfee Lab Box 1268 Mahoningtown Pa KNAPP Robert C. W 26 Virginia Ave. N. W. Glen Burnie 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 Calif KNAUFT Robert W. R Charles Taylor Sons Co. Box 58 Annex Station Cincinnati 14. Ohio KNECHT Albert O. WI 201 Edgewood Ave. New Castle Pa Universal Corp. KNIGHT E. H. S Maurice A. Knight Sons Co. Box 150. Crooksville Ohio KNIGHT M. A. Jr. S Maurice A. Knight Knight Box 111. Akron 9. Ohio KNIGHT MAURICE A. KNIGHT M. Knight Jr. Box 111 Akron 9 Ohio NIGHT Meilen A. G . Minnesota Mining & Mfg Co. 2301 Hudson Rd St. Paul 6 Minn KNIGHTON Heywood J. G 834 Trombley Rd Grosse Pointe Park 30. Mich Ford Motor Co. KNISELY Robert C. G 2907 Letchworth Pky Toledo 6. Ohio Kimble Glass Co. KNIZEK Jan :: R Apartado 2739 Mexico D. F. Mexico Compania Mexicana de Tubos de Albanal 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 Philip S. S 441 E. Buford Rd Macon Ga Butler Brick Co. KNOWLES William V. EF 8905 Champlain Ave. Niagara Fails N. KNOWLTON Samuel H. W 610 New Center Bldg Detroit 2. Mich Aluminum Co. of America KNOX James J. G 5 Meinzer St. Avenel N. J. Knox Laboratories Inc. KNUDSEN Friedrich P. BI 4912 Crescent St. Washington 16. C. National Bureau of Standards KNUDSEN Rolf Borgestad P. A. Norway Borgestad Fabrikker KNUTSEN Eivind R Western Refractories Co. Box 169. Ione Calif JCH Daniel O. M E. I. du Pont de Nemours & Co. Inc. Electrochemicals Dept. 71 Buckingham Ave. Perth Amboy N. J. VOL 35 No. 10 1956 KOCH Frank A. M National Sales Corp. 307 E. Fourth St. Cincinnati 2 Ohio KOCH Kenato Direttore Stabilimento Tubi Elettronici Marconi Italiana S.p.A. Via Pile L'Aquila Italy KOCH William J. WI A. F. Electronics 1336 N. Henry St. Alexandria Va KOCHANEK Michel R 4141 153rd St S. E. Bellevue Wash Gladding McBean & Co. KOEHLER W. A. RI Mineral Industries Bldg West Virginia University Morgantown W. Va KOENIG Charles Jacob WFI Engr Expt Sta Ohio State University Columbus 10 Ohio KOENIG E. W. M Consolidated Feldspar Dept. International Minerals & Chemical Corp. 20 N. Wacker Dr Chicago 6 Ill 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 Wisc KOHN Joseph W Universal Dental Co. 48th & Brown Sts Philadelphia 39 Pa KOHNE Frank H. W 1700 Third Ave. New Brighton Pa Ceramic Color & 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. Obio KONOPICKY Kamillo Forschungsinstitut der Feuerfest Helmholtzstr 27. Bonn Germany KONOWITCH Gilbert D. 2010 N. 74th Ave. Elmwood Park 35. Ill KONRAD Howard E. R 41 Brookside Ave Apt B Somerville N. J. Manville Corp. KOOIJ K. Chamotte Unie N.V. 7. Tielerweg Geldermaisen Holland KOOS E. K. WI Sterling China Co. East Liverpool Ohio KOPP GLASS INC C. E. Leberknight Box 8255 Pittsburgh 18. Pa KOPPERS CO INC Frank L. Jones Box 128 Verona Pa KORA Yosio 2 Chome Katsuyama Yahata Fukuoka Japan Kurosaki Fire Brick Mfg Co. Ltd. KOSCHNY Arthur American Ceramic Society Inc. 4055 N. High St. Columbus 14 Ohio KOSHUBA Walter J. BI 424 Hillcrest Dr. Wyoming 15. Ohio General Electric Co. KOWAL Leo B. G Canadian Pittsburgh Industries Ltd. 300 Blvd. St. Croix Ville St. Laurent Que Canada KOWALKA Warren R. G Owens Glass Co. 1701 E. Broadway Toledo 5 Ohio KRAFT C. W. S Kraftile Co. Niles Calif Co. A. 185th Signal Bn Camp Polk La KRAFT Maurice M. E Kraf Chemical Co. 917 W 18th St. Chicago Ill KRAFT Ralph G. R 102 W. Chateau Place Milwaukee 17 Wisc Bradley Co. KRAFTILE CO C. W. Kraft Niles Calif KRAMER William Meigs G Adamston Flat Glass Div Rolland Glass Co. Box 531. Clarksburg W. KRANER Hobart M. BFI Bethlehem Steel Co. Va Bethlehem Pa . KREGER John M. R Valentine Fire Brick Co. . Div A. P. Green Fire Brick Co. Woodbridge N. J. KREHBIEL Frederick H. W Pyrocores Inc. Pataskala Ohio KREHBIEL H. Orton R Pyrocomes Inc. Pataskala Ohio KREIDL 2. L. B A. D. Little Inc. 30 Memorial Dr. Cambridge Mass KREIDL Norbert J. GF . 40 Milford Rd Rochester 10 N. Y. Bausch & Lomb Optical Co. KRETSCHMAR Ernest G Electro Slag Co. 101 S. Meramec Ave. Clayton 5. Mo. KREUER Albert L. M Orefraction Inc 7425 Thomas St. Pittsburgh 8. Pa KRIEGEL W. Wurth XF1 North Carolina State College Ceramic Engineering Div Raleigh C. KRIGER Frederick S. G 148 E. Second St. Corning N. Y. Coming Glass Works KRILL Karl E. B Ohio State Univ Res Foundation Columbus 10 Ohio : KROCHMAL Jerome Jay RJ 4240 Brenau Ave. Dayton 9. Ohio U. Air Force Project Engineer KROECK William H. G Corning Glass Works Box 544. Corning N. Y. KROGSTIE Lars Bernhard Fredrikstad Norway Norsk Teknisk Porselenfabrikk 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. Springfield Ave. Champaign Ill KRUSON Joseph H. R Box 358 Frostburg Md Mexico Refractories Co. KRYWULT Edward Z. W 171 St. Joseph Ave. Long Beach 3 Calif Huntington Tile Inc. KUECHLER Adolph WI 169 Congress Ave. Providence 7. R. I. American Emery Wheel Works KULCSAR Frank B Clevite Research Center 540 E. 105th St. Cleveland 8 Ohio KUMINS Charles A. B Interchemical Corp. 432 W. 45th St. New York 36 N. ROSTER 59 KUNDLER Hanns H. M Arnhold Ceramics Inc. One E. 57th St. New York 22 N. KUNZMAN Edward E. M1 Ferro Corp. 4150 E. 56th St. Cleveland 5. Oh RKJIAN Charles R. G , Massachusetts Institute of Technology s Rm 4-030 Cambridge 39. Mass KURTZ Peter Jr. 827 Second St. Apt B. Santa Monica Calif KUSHNER Burton A. Box 5188 Georgia Tech Atlanta Ga KYANITE MINING CORP Gene Dixon Cullen Va KYI Maung Yu Box 216 Alfred N. Y. KYOKWAI Yogyo Ceramic Assn of Japan 7. Sakuragawacho Minato Tokyo Japan KYONKA Joseph C. WI 303 12th Ave. N. Hopkins Minn Ceramic Arts Studio L LABANSAT M. Jacques Societe Professionnelle Des Produits Francais De Terre Cuite 23. rue de Cronstadt Paris XV France LABORATORIO QUIMICO NACIONAL Jorge Ancizar Ministerio de Minas y Petroleos Apartado 2577 Bogota Colombia LACHMAN Irwin M. WJI W.A.D.C Area B. Box 8908 Patterson AFB Ohio LACLEDE CO DIV H. K. PORTER CO W. L. Fabianic 4705 Ridgewood Ave. St. Louis Mo. LACONICH Sixto Codofredo Porcelana Americana S. A. * San Julian y Andes Lomas de Zamora F.C.N.G.R. Argentina LADOO Raymond 3. M 42 Huntington Rd Newton 53. Mass Consulting Engineer LaFORGE Louis H. Jr. W 764 Marion Ave. Palo Alto Calif Consulting Engineer LAHTI Lesiie E. GJ 1101 N. Eaton St Albion Mich Corning Glass Works LAIDLER Dougias S. 84. Vicarage Ln Kings Langley Herts England Associated Lead Manufacturers Ltd. LAIRD Charles SI Box 462. Holly Springs Miss , Holly Springs Brick & Tile Co. Inc. LAIRD Robert K. E 4507 Blue Bird Ave. Louisville 13 American Radiator & Standard Sanitary Corp Plumbing Div LAMAIRE Robert V. RI Sawmill Rd Warren Tp Plainfield N. J. International Nickel Co. Inc. Ky LAMAR George B. M Interchemical Corp. Albion Kaolin Div Hephzibah Ga LAMB Hal M Braun Corp. 1363 S. Bonnie Beach Pl Los Angeles 54 Calif LAMBE C. M. MFI United States Gypsum Co. 300 W. Adams St. Chicago 6. III MBERT Joseph M. G Mellon Institute 4400 Fifth Ave. Pittsburgh 13 Pa LAMBERTSON Wingate A. BI Carborundum Co. Research Lab Niagara Falls N. Y. Vol 35 No. 10 1956 LAMBIE J. M. R Findlay Clay Products Co. Washington Pa LANDBACK Charles R. R Carborundum Co. Refractories Perth Amboy N. J. Div LANDIS Benjamin M. 131 Sixth St. Scotia Y. LANE George J. W Edgar Plastic Kaolin Co. Edgar Fia LANE Richard O. RI Macklin Co. 2917 Wildwood Ave. Jackson Mich LANG Richard L. G Ohio Fuel Gas Co. 17 N. Fourth St. Zanesville Ohio LANG Samuel G. E Hartwood Glass & Metals Co. Box 865 Martinsburg W. Va LANG S. M. W 9718 Braddock Rd Oakview Silver Spring Md National Bureau of Standards LANGE James M. R Bethlehem Steel Co. Bethlehem Pa LANGE Louis A. M Industrial Heat Control Products 641 Hawthorne Ave. South Milwaukee Wisc LANGROD Kasimir W 462 Locust Terr West Hempstead N. Y. Sylvania Electric Products Co. LANGSTON Robert B. University of California Hearst Mining Bldg Rm 164 Berkeley 4 Calif LANIER William S. R Babcock & Wilcox Co. Old Savannah Rd Augusta Ga LANNES Eugene M. XI 1695 N. Union St. Fostoria Ohio Hoeganaes Sponge Iron LAPENNA Sabino Av Las Palmas 21 Quinta Evelyn Boleita Edo Miranda Venezueia LAPP Grover W. MF Lapp Engineering Co. 68 W. Main St. Le Roy N. Y. LAPP INSULATOR CO INC K. E. Stettinius Le Roy N. Y. LARISCH Herbert W. EJ 46 Fairview Ave. Vailey Stream N. Y. Fairchild Engine Div LARKIN Paul G. S 250 N. Harrison St Campbell Calif Consultant LAROCCA Frank J. R Colorado Fuel & Iron Corp. Box 316 Pueblo Colo LARSEN Marie A Bing & Grondahl Vesterbrogade 149 Copenhagen Denmark LARSON Edward A. S Larson Clay Pipe Co. 9980 Van Dyke Ave. Detroit 34 Mich LARSON Paul F. S 3866 Norman Ave. N. W. Canton 9. Ohio Sparta Ceramic Corp. LARSON Thomas L. RJ Babcock & Wilcox Co. 161 E. 42nd St. New York 17 N. Y. , LASEMAN Malcolm E. S 51 S. Fenton St Denver 14 Colo Robinson Brick & Tile Co. LASKY Elliott Box 847 Alfred N. Y. LATCHFORD 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 & Co. LATIMER Horace L. EI 248 Questend Ave. Mount Lebanon Pittsburgh 34 Pa O. Hommel Co. LATIMER Tren W. Ohio State University Baker Hall Columbus 10. Chio LATTIN Judson M. R 14644 S. Edbrooke Ave. Doiton III International Harvester Co LAUCHNER Julian H. J 27 A Stadium Terrace Champaign ill 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. Cooksville Ont Canada LAWRENCE Ralph V. RI 926 Kenneth Rd Glendale 2 Calif Gladding McBean & Co. : LAWRENCE Walter F. Jr. WI 153 Morningside Rd Verona N. J. RCA Victor LAWRENCE Willis G. B State University of New York College of Ceramics Alfred N. Y. LAWSON Louis Jr. W West Virginia Pulp & Paper Co. Development Dept. Charleston S. C. LAWSON W. Branch W 647 N. Elm St. Erwin Tenn Lawson Feidspar & Minerals LAXTON Wilbur G Hazel Glass Co. 126 Market St. Zanesville Ohio LAYNE Fred A. W Louthan Mfg Co. East Liverpoci Ohio LAYTON Donald R. GI Brockway Glass Co. Brockway Pa LAZARKIS Peter J. W 37 Fifth Ave. Watertown Mass Raytheon Manufacturing Co. LEAD INDUSTRIES ASSOCIATION Robert L. Ziegfeld 60 E. 42nd St. New York 17. N. LEAKE Fred Jr. M Evans Lead Corp. Box Charleston 25. W. Va 1467 LEANDER Karl Johan Langgat 19. Hoganas Sweden Billesholms AB LEAVER Stanley R 1202 Niagara St. Niagara Falls N. Y. Carborundum Co. LE BELL Rolf Casimir Pargas Kaikbergs Aktiebolag ABO Kakelfabrik Slottsgatan 52 ABO Finland LEBERKNIGHT C. E. GF - Kopp Glass Inc. Box 3255 Pittsburgh 18 Pa LEBLANC John R. Box 16. Alfred Sta Alfred N. LEDDY Robert M. SI Box 128 Hammonton N. J. Alliance Clay Product Co. LEE CLAY PRODUCTS CO INC Martin S. Bowne Clearfield Ky LEE Don W 20 Westgate Cambridge 39 Mass LEE Harley C. RF Basic Inc. 345 Hanna Bldg Cleveland 15. Ohio LEE James A. S Southern Brick & Tile Mfrs Assn 1328 Candler Bldg Atlanta 3. Ga LEE P. William BI 205 Elmwood Blvd. York Pa Dentist's Supply Co. of New York ROSTER 63 EECH L. G. H. G. Thynne Ltd. Victoria Tile Works Holmer Hereford England EEDS Donald H. RJI 2025 Westfield Terr Bethlehem Pa chiehera Steel Co. a Arch A. R 1 Avon Dr. Pittsburgh 16. Pa Carborundum Co. EFFORGE J. W. B Monsanto Chemical Co. Everett Station Boston 49. Mass .EFORT Henry G. Jr. I 411 Fairlawn Dr. Urbana Ill E HERON Harold Etablissements Porcher Usines de Revin Ardennes France _EIBIG Edward C. R Corning Glass Works Corning N. Y. LEIBSON J. S. WI Insulator Dept. General Electric Co. S. Charles & Cromwell Sts Baltimore 3 Md LEIPOLD Martin H Jr. 95 E. 12th Ave. Columbus 10 Ohio LEISER Craig F. 8344 30th N. W. Seattle 7. Wash LEISEY William B. S 615 Elm Ave. Muhlenberg Reading Pa Manu Research & Development Co. Park 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. LEMMERMAN Paul C. R E. I. du Pont de Nemours & Co. Inc. Grasselli Chemicals Dept. fational City Bank Bldg Cleveland 14. Ohio LEMUNYON James S. E Tappan Stove Co 250 Wayne St. Mansfield Ohio LENCHNER Theodore DF 5158 Beeler St Pittsburgh 17. Pa Vitro Manufacturing Co. LENNON A. G. W Canadian Potteries Ltd. 360 Blvd. du Seminaire St. Johns Que Canada LENNON John W. WI Bartelle Memorial Institute 505 King Ave. Columbus Ohio LENTZ Clarence J. R Quebec Iron & 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 Pfaffenhofen Bas France WOLF A. L. M Carborundum Co. Globar Niagara Fails N. Y. Div 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 Bell Telephone Labs Murray Hill N. J. TESSO TESSO Harold F. R 631 Beechmont Dr. Dearborn Hills Mich Great Lakes Steel Corp. LESTER Frank P. W 75 Mercer Ave. Hartsdale N. Y. Consulting Engineer VOL 35. No. 10 1956 LESTER Ronald H. WJD 3811 Garrison Blvd. Baltimore 15 Md General Electric Co. LESTER W. Ronald Liberty Glass Co. Sapulpa Okla LESZL Matthias GF Smalteria e Metallurgica Bassano del Grappa Italy LETORT Marc Yves Veneta Centre National d'Etudes e Recherches Ceramiques 3 Avenue Paul Doumer Paris 16 France LETTER Eugene C. BJ Bausch & Lomb Optical Co. Dept. 62 5C Rochester N. Y. LEVENGOOD William C. G 4473-289th St. Toledo Ohio Libbey Glass Co. LEVI Ormonde S. G Verd Corp. 615 Front St. Toledo 5. Ohio LEVIN Ernest M. B National Bureau of Standards Div 9.7 Washington 25 D. C. LEVIN I. M & 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 Ill LEWIS Albert D. G Kimble Glass Co. Vineland N. J. LEVY Raymond H. B 5501 Lynview Ave. Baltimore 15. Md Glenn L. Martin Co. LEWIS George L. B E. I. du Pont de Nemours & Co. Inc. Experimental Sta Wilmington | LEWIS Gordon E. SI Gery Shale Brick Corp. Box 86 Shillington Pa LEWIS J. H. G Blue Ridge Glass Corp. Kingsport Tenn LEWIS J. M. W Abingdon Potteries Inc. 801 N. Main St. Abingdon Ill LEWIS William C. G` Big Flats N. Y. Corning Glass Works LEWIS William N. G Del E Circuit Breaker Co. 601 E. Erie Ave Philadelphia 34 Pa LIBBEY GLASS CO George B. Watkins 1701 E. Broadway Toledo 5. Ohio LIBERATORE Laurence C. G Taylor Instrument Co. 95 Ames St. Rochester , N. Y. LIEDER Phillip H. R 2600 Dogwood Lane Norristown Pa E. J. Lavino & Co. LIEDERBACH William H. BI 202 Prospect Ave. Pewaukee Wisc Union Inc. LIGON Elmer R. SI W. S. Dickey Clay Mfg Co. Box 402 Pittsburg Kans LILLIE Howard R. GF 191 Delevan Ave. Corning N. Y. Corning 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 Ludlum Steel Corp. Research Labs Brackenridge Pa LIN Francis C. M. G Hazel Glass Co. Washington Pa LINDENTHAL John W. G Ohio State University Engineering Experiment Sta Columbus 10. Ohio LINDER Cyril S. E 1139 Park St. Tarentum Pa Pittsburgh Plate Glass Co. LINDQUIST C. Alan Jr. BI Grandview Ave. Conneaut Ohio Ackumulator AB Oskarshamn Sweden LINDSAY Carey E. RI Niles Fire Brick Co. Jungner 165 E. Park Ave. Niles Ohio LINDSAY J. Gordon B Aluminium Labs Ltd. Arvida Que Canada LINKHORN William H. W 429 S. Western Ave Kokomo Ind American Radiator & Standard Sanitary Corp. LINSEIS Max Selb Bay Hauptmannweg 9 Germany LINTZ E. H. WFI 42 Heiskell Ave. Wheeling W. Va Wheeling Tile Co. LINWOOD Sidney H. W Stackpole Carbon Co. St. Marys Pa LINZ Arthur E 551 Fifth Ave. New York 17 Y. Consultan LIPMAN B. David Gen. Del Alfred N. Y. LITEN Alexander F. Box 382. Salem Mass LITHIUM CORP OF AMERICA INC Walter M. Fenton 2560 Rand Tower Minneapolis 2 Minn LITTLE John M. S 120 S. 29th Ave. Hattiesburg Miss Hattiesburg Brick Co. LITTLETON Joseph C. G 101 Delevan Ave. Corning N. Coming Glass Works LITTLETON J. T. Honorary GF Corning Glass Works Corning 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 L MANUFACTURING CO I. Levin 135 Eighth St. Upland Chester Pa LLOYD Katherine R Kaiser Aluminum & Chemical Corp. 1924 Broadway Oakland Calif LO 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. F. 450 Oriente 171 Mexico Fs D. F. LOCKE Ralph S. B Diamond Springs Lime Co. Box 409 Diamond Springs Calif LOGAN CLAY PRODUCTS CO Barton A. Holl Box 698 Logan Ohio LONDEREE Joseph W. Jr. B 3918 Warner Ave. Louisville Ky Corhart Refractories Co. LONG Bernard Glaces de Boussois 22. Boulevard Malesherbes Paris 8 France LONG George R. E Frigidaire Div General Motors Corp. 300 Taylor St. Dayton 1. Ohio LONG John V. G Solar Aircraft Co. 2200 Pacific Highway San Diego 12. Calif ROSTER 65 LONG Luther L. G Corning Fiberglas Corp. Case Ave. Newark Ohio LONG Robert Sr. E American Porcelain Enamel Co. 1285 Keating Muskegon 36 PNG Robert R. National Tile 1200 E. 26th Ave. Mich W & Mfg Co. St. Anderson Ind LONG Russell E. RI Brush Beryllium Co. 4301 Perkins Ave. Cleveland 3 Ohio LONGENECKER Robert J. M 46 James Rd Broomall Pa Foote Mineral Co. LONGFRITZ Robert K. RI Brighton Brick Co. Box 256 New Brighton Pa LONGINO Ted E. S Henderson Clay Products Henderson Texas LONGWELL Burton E Republic Steel Corp. 1423 Republic Bldg Cleveland , Ohio LOOMIS David G. M Loomis Engineering & Mfg Co. 125 S. 14th St. Newark 7 N. J. LOREY Frederick D. GI 41 Meadow Brook Apt Corning N. Y. Corning Glass Works LOREY G. Edwin Dept. of Ceramic Engineering School of Mines & Metallurgy Rolla Mo. LOSCO Alfred G. B 27 Paterson Ave. Paterson N. J. Kearfott Co. Inc. LOUDEN R. H. WI McGean Chemical Co. Midland Bldg 101 Prospect Ave. N. W. Cleveland 15 Ohio LOUGHRIDGE Frederick A. G 52 Norwood Ave. Manchester Mass Sylvania Electric Products Inc. OUTHAN MANUFACTURING CO C. W. Gerster 2000 Harvey Ave. East Liverpool Ohio LOVE L. G. G National Lime & Stone Co. First National Bldg Findlay Ohio LOVELAND Edward W. G 504 79th St North Bergen N. J. Fran Manufacturing Co. LOVELL George H. B. Silwood Ceramics Box 152 Bergviei Johannesburg South Africa LOVENBACH J. Giaceries de Saint Roch S. A. 50 rue du Luxembourg Brussels Beigium LOVETTE Paul V. Jr. R R.R. 1. Painted Post N. Y. Corning Glass Works LOWE Earl C. SI Box 46. Logan Ohio Straitsville Brick Co. LOWE Edwin C. R 2112 Coholan St. Niagara Falls Ont Canada Norton Co. LOWE George K. RI Charles Taylor Sons Co. Rockefeller Bldg Rm 210 May^-eldat Lee Cleveland 18. Ohio LOWE William S. R 1 A. P. Green Fire Brick Co. 1018 E. Breckenridge St. Mexico Mo. LOWER Clarence G. S New Bethlehem Tile Co. 311 Lafayette St. New Bethlehem Pa LOWER Lloyd C. S 227 Washington St. New Bethlehem Pa New Bethlehem Tile Co. LOWER Lloyd Jr. SJ New Bethlehem Tile Co. New Bethlehem Pa VOL 35 No. 10 1956 LOWRANCE R. T. W Jackson Tile Manufacturing Co. Box 2006 Jackson Miss LUCAS Joseph M. W 1431 Broad Blvd. Cuyahoga Falls Ohio U. S. Stoneware Co. LUCEK John R. MJ 51 Bushey Rd Pittsfield Mass General Electric Co. LUCIDO Peter J. 1518 Central Lafayette Ind LUDOWICI Johann W. Carl Ludowici K.a.A. Co. Jockgrim Rheinpfalz Germany LUDWIG David W. GI 107 Penn View Dr Monroeville Pa Pittsburgh Plate Glass Co. LUDWIG Urban W. G 2835 Little York Rd Dayton 4 Ohio Univis Leas LUEDERS Roland M 3241 Bradford Rd Cleveland Heights 18 Ohio Ferro Corp. LUHRS Millen E. G Libbey Glass Co. 1701 E. Broadway Toledo Ohio LUKS Daniel W. WI Star Porcelain Co. Muirhead Ave. Trenton 9. N. J. LULL Stanley E. RI 83-8 Park Ave. Worcester 5 Mass Bay State Abrasive Products Co. LUNAK Thomas E. WI Globe Union Inc. 900 E. Keefe Milwaukee 1 Wisc LUND H. Howard S 44 S. Elmwood Ave. Palatine Ill Armour Research Foundation LUND L. Howard SJ 168 Austin St. Carpentersville III Central Commercial Co. LUND Melvin S. W 426 E. State St. Alliance Colonial Insulator Co. Ohio LUND Randolph A. 1717 W. 105th St Chicago 43 Ill LUNDE Marvin 4241 Union Bay Ln Seattle Wash LUSHER Gerald H. R Norton Co. 5905 Pacific Blvd. Huntington Park Calif LYLE Aaron K. GF 21 Cumberland Rd West Hartford 7 Conn Hartford Empire Co Div Emhart Mfg Co. LYMAN Donald R. Box 787 Alfred N. Y. LYNCH Eugene D. W University of Illinois Dept. of Ceramic Engineering 204 Ceramics Bldg Urbana Ill LYNCH James F. R Battelle Memorial Institute 505 King Ave. Columbus 1. Ohio LYNCH John F. W 6319 N. Leavitt Chicago Ill Lindberg Engineering Co. LYNSAVAGE Walter F. G 210 Arnold Ave. Port Allegany Pa Pittsburgh Corning Corp. LYON John B. S Acme Brick Co. Denton Texas LYON Kenneth C. GF 357 E. Washington St. Dunkirk Ind Ball Brothers Co. Inc. LYONS Clifford T. W 9825 Bowman Blvd. Dallas 20 Texas Trinity Ceramic Supply Co. LYONS S. C. M Georgia Kaolin Co. Dry Branch Ga LYTLE Jack A. BI 308 E. Green Tree Rd Milwaukee 17 Wisc Bradley Co. LYTLE W. O. G Pittsburgh Plate Glass Co. Research Lab Creighton Pa LYTTLE Frobisher T. W 1031 Findley Ave. Zanesville Mosaic Tile Co. Ohio Mc McADOO D. P. W J. M. Huber Corp. 100 Park Ave. New York N. MCALLISTER Christopher GI Box 281 Clarksburg W. Va Pittsburgh Plate Glass Co. MCALPINE Kenneth B. G 1201 Union Ave. Brackenridge Pa Pittsburgh Plate Glass Co. McASKILL James I. W 311 King St. W. Kingston Ont Canada Frontenac Floor & Wall Tile Co. Ltd. MCAULEY James W. G 2334 Sherwood Rd Toledo Ohio Libbey Glass McBURNEY John W. SF 1543 N. Falkland Ln Co. Silver Spring Md Consultan McBURNEY William C. D R. R. 5. Eastbrook Rd New Castle Pa Shenango China Inc. McCAIN Kenneth B. B Wilbur B. Driver Co. 1875 McCarter Hwy Newark 4 N. J. McCAMMON James W. M Dept. of Mines Parliament Bldgs . Victoria B. C. Canada McCANN D. M. WI Akron Porcelain Co. Akron 14 Ohio McCANN Sidney W. EI Pfaudler Co. 1000 West Ave. Rochester 3 N. Y. McCARTT Kenneth C. W 1408 Delaware Ave New Castle Pa Universal McCLAVE James W. Box 508. Toronto Corp. SI Ohio Peeriess Clay Corp. MCCLELLAND Roland H. WI Globe Inc Centralab Div 900 E. Keefe Ave. Milwaukee Wisc McCLURE Clifton M. RJ 2415 Edgewood Ave. Anderson S. C. McCLURG John G Oglebay Norton & Co. 1200 Hanna Bldg Cleveland 15. Ohio McCOLLOM Perry C. RI American Refractories & Crucible Corp North Haven Conn MCCONAUGHA Wayne H. Natco Corp. Box 456 East Canton Ohio S McCONNELL G. F. W Mosaic Tile Co. Zanesville Ohio McCORMICK John M. G - 1827 Richards Rd Toledo 7 Ohio McCORMICK Stewart W. RI Corhart Refractories Co. 1600 W. Lee St. Louisville Ky McCOY Nelson W Nelson McCoy Pottery Co. Roseville Ohio McCOY NELSON POTTERY CO Nelson McCoy Roseville Ohio MCCREERY George L. W 393 Highland Ave. Wadsworth Ohio Brass Co. Ohio McCREIGHT Louis R. R General Electric Co. 3198 Chestnut St. Philadelphia Pa McCUNE Samuel E. R United States Steel Corp. Gary Works Res Lab 991 Gary Ind McDANEL Donald W. W McDanel Refractory Porcelain Co. 10 Ninth Ave. Beaver Falls Pa ROSTER 67 McDANEL Melvin W. W R.R. 2. Eastvale Rd Beaver Fails Pa McDanel Refractory Porcelain Co. McDANEL Sumner W R.R. 2. Beaver Falls Pa MCDANIEL L. L. R Phelps Dodge Corp. Morenci Branch Morenci Ariz MCDERMOTT James J. Jr. G 136 William St. New York 38. Y. McDONALD C. H. S West Bros. Brick Co. 6500 Sheriff Rd N. E. Washington 27. D. C. McDONALD E. F. EI Richardson Mfg Co. Beaver Falls Pa McDONALD Howard A. R 12202 E. 19th Ave. Spokane 64 Wash Kaiser Aluminum & Chemical Co. McDOUGAL Taine G. WFI 1117 South Dr. Flint 3 Mich and Ha'penny House Somerset Bridge Bermuda MCDOWALL Ian C. New Zealand Pottery & Ceramic Research Assn Inc. Private Bag Lower Hutt New Zealand MCDOWELL J. Sports RF 4716 Bayard St. Pittsburgh 13. Pa Harbison Refractories Co. MCDOWELL Samuel J. BFI 52 Elm Ave. Metuchen N. J. American Lava Corp. MCELROY R. H. MI International Clay Machinery Co. 1145 Bolander Ave. Dayton 1 Ohio MCEVOY Robert J. RI 2234 Berdan Toledo 13. Ohio Coming Fiberglas Corp. MCFARLAND James E. E 14025 Greenbay Ave. Chicago 33 III Inland Steel Co. McCEAN Ralph L. E Midland Bldg 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 Box 3667 University Station Charlottesville Va MCGINNIS R. A. W American Lava Corp. Cherokee Blvd. & Mfgrs Rd Chattanooga 5. Tenn McGOHAN G. William E Armeo Steel Corp Middletown Ohio McGOLPIN William C. S Rm 403 57 Bloor St. W. Toronto 5. Ont Canada Natco Clay Products Ltd. McGRAW Delford A. G 4117 Graceway Toledo 6 Ohio Owens McGREGOR Frederick B. M Great Lakes Foundry Sand Co. 720 United Artists Bldg Detroit 26. Mich MCHOSE Donald G. M Such Clay Co Box 47 Perth Amboy N. J. MCHOSE M. M. Jr. M Such Clay Co. Box 47 Perth Amboy N. J. MCINTOSH C. M. W Radio Materials Corp. 1708 W. Belmont Ave. Chicago 13 III MCINTOSH Haroid W. G American Window Glass Co. Farmers Bank Bldg 20th Floor Pittsburgh 22 Pa : MCINTOSH William A. S West Virginia Pulp & Paper Co Polychemicals Div Charleston S. C. Vol 35 No. 10 1956 MCINTYRE G. H. EFI Ferro Corp. 4150 E. 56th St. Cleveland 5 Ohio McKAIG W. Wallace R Cumberland Steel Co. Box 28 Cumberland Md McKANE John W. R 257 Chesterfield Ave. Glen Ellyn Ill Foremost Foundry Supply Co. McKEAND Irvin J. W Minneapolis Regulator Co. Research Center 500 Washington Ave. S. Hopkins Minn McKEE William D. Jr. B 64 W. Tulane Rd Columbus 2 Ohio Batteile Memorial Institute McKEEN Richard D. WI Box 625 Haverhill Mass Western Electric Co. McKENDRICK Alexander Glenboig Union Fire Clay Co. L Glenboig Lanarkshire Scotland MCKEOWN J. Duncan R Box 137 Burnet Woods Station Cincinnati 20. Ohio Carborundum Co. MCKEOWN Thomas H. M Box 31 Metuchen N. J. E. I. du Pont de Nemours & Co. Inc. McKIBBEN Bur H. E Mallory Titanium Niles Ohio Corp. McKINNIE J. R. R Ideal Chemical Products Inc. 3813 Hoke Ave. Culver City Calif McKINNIS Charles L. GI Corning Fiberglas Corp. Glass Res Lab Newark Ohio McKULLA George W. Jr. 4711 17th N. E. Seattle S. Wash McLACHLAN Eugene K. R 2280 Sunshine Johnstown Pa Bethlehem Steel Co. MCLAIN FIRE BRICK DIV H. K. PORTER CO INC Lawson E. Mason Clark Ave. Wellsville Ohio McLANE James P. M Diamond Pottery Corp. 50-56 Caina St Crooksville Ohio McLAREN Henry D. E Ferro Enamels Canada Ltd. Box 37 Oakville Ont Canada McLAREN John M Box 75 East Liverpool Ohio Bell Research Labs MCLAUGHLIN John L. E 564 S. Craig Pl Lombard Ill Allied Porcenell Inc. MCLAUGHLIN Joseph K. WI Hyalyn Porcelain Inc. Hickory N. MCLAUGHLIN William H. R Alsey Brick & Tile Co. Alsey III MCMAHON John F. XFI Alfred N. State University of New York College of Ceramics at Alfred Univ MCMAHON John F. Jr. GJ 645 S. Cannon Ave. Lansdale Pa MCMASTER Harold A. G Permaglass Inc. Box 195 Sta A. Toledo 5 Ohio * McMULLEN John C. R 9325 Rivershore Dr. Niagara Falls N. Y. Carborundum Co. McMURDIE Howard F. BF National Bureau of Standards Washington 25 D. C. McMURTRY Carl H. RJI 72 Maple Ave. Wellsville State University of New College of Ceramics Y. York MCNAMARA E. P. WFI 73 Ritchie Ave. Cincinnati 15 Ohio Cambridge Tile Mfg Co. MCNAMARA Edward P. Jr. 135 E. Third St. Corning N. Y. MCNAMARA Richard B. R 17 Lochland Dr. Buffalo 25 N. Y. Electro Refractories & Abrasives Corp. McNAUGHTON Ronald R. B 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 Cleveland 14 Ohio Bldg McTAGGART G. Don Coming Glass Works Corning N. Y. MCVAY T. N. BFI 10 Oakwood Court Tuscaloosa U. Bureau of Mines Ala McWALTER H. G. R Laclede Co. Div H. K. Porter Co. Inc. 2000 Hampton Ave. St. Louis 10 Mo. McWILLIAMS Robert J. EI Pfaudler Co. Elyria Div Taylor St. Elyria Ohio M MacALPINE William M. G 357 E. Main St. Somerville N. J. Manville Research Laboratory MacDONALD James E. R McFeely Brick Div General Refractories Co. Latrobe Pa MacDONALD Raymond S. G Corning Glass Works Corning N. Y. MacDONALD R. W. WI R.R. 11. Box 661 San Antonio Texas Consulting Engineer MACER W. E. M Carborundum Co. Globar Niagara Falls Y. Div MacGIBBON Richard John G. Stein & Co Ltd. Manuel Works Nr Linlithgow Scotland MACHLAN G. R. G Corning Fiberglas Newark Ohio Corp. MacINTYRE Donald J. R.R. Piffard Y. Lapp Insulator Co. W Inc. MACKASEK Edward EF 1722 19th St. N. W. Apt 702 Washington 9 D. C. Porcelain Enamel Institute MACKENZIE James United Steel Companies Ltd. Research & Development Dept. Swinden House Moorgate Rotherham England MacKENZIE James T. R 4300 Ninth Court S. Birmingham 5 Ala Southern Research Institute MACKLIN CO Richard O. Lane 2917 Wildwood Ave. Jackson Mich MacLEOD John United Fireclay Products 140 W. George St. Glasgow C. 2. Scotland Ltd. MacNEIL S. Ambrose Demerara Bauxite Co. Ltd. Mackenzie British Guiana MacRAE John G Fiberglas Canada Ltd. Box 309 Guelph Ont Canada ROSTER 69 MAC ZURA George RJ 3815 Highland Rd East St. Louis II Alcoa Research Labs MADDEN Rober C. B 315 Pim St. Sault Ste Marie Ont Canada Algoma Steel Corp. Ltd. MADDOCK A. M. W R. R. Washington Crossing N. J. MADSEN Leif Egil Box 4208. Sandakervn 109/111 Oslo Norway A Den Norske Slipeskivefabr MAGAZINE Arnold L. G Hytron Corp. 100 Endicott St. Danvers Mass MAGID H. S. WI American Radiator & Standard Sanitary Corp. Box 907 Trenton 5. N. J. MAGNUSON V. E. M Western Feldspar Milling Co. Box 671 Salida Colo MAGOR James K. E United States Steel Corp. Applied Res Lab Monroeville Pa MAGUIRE Edward A. Jr. 1335 E. Price St. Philadelphia 38 Pa MAGUIRE Samuel G. Jr. B United Clay Mines Corp. 101 Oakland St. Trenton 6 N. J. MAHIER Lois W. D 4535 Harding Blvd. Baton Rouge 7 La Southwestern Louisiana Institute MAHONEY Frank B. E Richmond Radiator Co. Box 111. Metuchen N. J. MAJESKE Joseph G T. C. Wheaton Co. Millville N. J. MALCOLM Richard B. E C. Homme Co. Box 475. Pittsburgh 30. P MALM Arthur T. RI 233 Beverly Rd Worcester 5. Mass Norton Co. MALOCTIAN Markay H. B 405 Mobegan Ave. New London Conn U.S.N. Underwater Sound Lab MALVERN BRICK & TILE CO George B. Eyerly Box 415. Maivern Ark MALYSIAK Chester G 1027 Hickory Perrysburg Illinois Ohio MANDEL Charles J. WI Willette Corp. of New Jersey Codwise Ave. & Reed St. New Brunswick N. J. MANDLE Richard M. G Rare Earths Inc. Box 488 Pompton Plains N. J. MANN George H. G Lake Salubria Bath N. Y. Corning Giass Works MANNING R. Douglas D Harker Pottery Co. East Liverpool Ohio MANOUSEK Miloslav Delnicka 27 Praha VII Czechoslovakia MANRING Jack C. EJI R.R. 1 South Charleston Ohio Westinghouse Electric Corp. MANRING William H. G Calumite Co. Box 151 Hamilton Ohio MANSFIELD SANITARY POTTERY INC Perry E. Draper Perrysville Ohio MANUFACTURERS EQUIPMENT J. R. Schroll 218 Madeira Ave. Dayton , Ohio CO MANZ Oscar E. B Box 16 University Station Grand Forks N. D. University of North Dakota VOL 35 No. 10 1956 MARCH Joseph W. S Nova Scotia Technical College Halifax N. S. Canada MARCUS Leon BI 1527 Coventry Rd Cleveland Ohio Horizons Inc. MARCYN Chester A. E 2302 S. Kensington Ave. Westchester Ill Chicago Vitreous Corp. MARGOLIS David R 39 Glenwood Ave. New Rochelle Y. Schurman Corp. MARGRAVE John L. B University of Wisconsin Dept. of Chemistry Madison 6 Wisc MARK Stanley D. Jr. R 1592 Love Rd Grand Island N. Y. Carborundum Co. MARLETT Charles J. M One Lloyd Ave. Latrobe Pa Kennametal Inc. MARQUIS John E. W Pemco Corp. Res & Dev Lab 2552 Greenmount Ave. Baltimore 18 Md MARSHALL Darwin B Electro Metallurgical Co. Metals Research Labs Box 580 Niagara Falls N. Y. MARSHALL Paul A. G 1201 Cherry St. Brockway Pa Brockway Glass Co. Inc. MARTIN Albert E. M Almar Specialty Machines Ltd. Maple Ont CanadaMachines MARTIN Francis W. G 101 Hornby Dr. Painted Post N. Y. Corning Glass Works MARTIN Frank B. R E. J. Lavino & Co. Box 29. Norristown Pa MARTIN H. C. R Carborundum Co. Buffalo Ave. Niagara Falls N. Y. _ MARTIN James K. M 1068 Helen Ave. Lancaster Pa Posey Iron Works Inc. MARTIN John R. Jr. W Monongahela Power Co. 920 Charles St Wellsburg W. Va MARTIN Leonard A. W Martin Ceramic Supply Co. 8901 Rainier Ave. Seattle 8. Wash MARTIN Ralph H. WI Vernon Kilas 2310 E. 52nd St. Los Angeles 58. Calif Wesley Wesley MARTIN G. EF 6054N. Kent Ave. Milwaukee 17 Wisc A. O. Smith Corp. MARTINO Paul D. SJ Cannelton Sewer Pipe Co. Cannelton Ind MARTINSEN Rodney E. M Timken Roller Bearing Co. 1835 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 Charles G. Box 787 Alfred N. Y. MARWAHA Kidar N. Burn & Co. Ltd. Refractory & Ceramic Works Box 13 Jabalpur , India MARX Le Roy J. S Denver Terra Cotta Co. 135 Tejon St. Denver 23 Colo MARYLAND GLASS CORP L. C. Roche 2147 Wicomico St. Baltimore 30 Md MASKILL William Webb Corbett Ltd. Coalbournbill Glass Works Stourbridge Worcester England MASON Cecil R. Jr. 879 Courtenay Dr. N. E. Atlanta 5. Ga MASON CITY BRICK & TILE CO C. F. Garland Mason MASON Frank W Colonial Insulator Co. City Iowa 945 Grant St. Akron 11 Ohio MASON Lawson E. R McLain Fire Brick Div H. K. Porter Co. Inc. Clark Ave. Wellsville Ohio MASSENGALE Gordon B. RI 553 Audubon Ave. Pittsburgh 34 Pa Harbison Refractories Co. MASSON R. Porzellanfabrik Langenthal A. G. Langenthal Switzerland MATCHULAT John G. R Buffalo Rd R.R. 2 East Aurora N. Y. Electro Refractories & Abrasives Corp. MATEJCZYK John F. E 7506 Trevanion Ave. Pittsburgh 13. Pa 0. Hommel Co. MATERIALI REFRATTARI SOC p.AZIONI J. Charles Mathon Via Elia Lombardini 13 Milano 744 Italy MATHENY Richard E. S R.R. 7. Box 307 Birmingham Ala Natco Corp. MATHER Mrs. Katharine B Waterways Experiment Sta Drawer 2131 Jackson Miss MATHIASEN O. E. S Seaboard Federal Terra Cotta Corp. Box 301 Perth Amboy N. J. MATHIESON George W. G 2253 Castlewood Dr. Toledo 13 Ohio Kimble Glass Co. MATHIESON Roblin M. R Aluminium Limited Sales Inc. 630 Fifth Ave. New York 20 N. Y. MATHIEU Louis A. Parra Mantois 11 Chemia de Ronde Le Vesine & France MATHON Charies Materiali Refrattari Via Elia Lombardini Soc 13 p.Azioni Milano 744. Italy MATHON J. Charles Materiali Refrattari Soc p.Azioni Via Elia Lombardini 13 Milano 744 Italy MATSON Frederick R. GI 723 Jackson St. State College Pa Pennsylvania State University MATTESON Gilbert D. W Engineering Library : Scintilla Div Bendix Aviation Sidney N. Y. Corp. MATTISON WilliaFm. Jr. GI R.R. 3 Lawson Dr. Madison Conn Libbey Glass Co. MAU K. T. S Gaspro Box 2454 Honolulu Hawaii MAUPIN Addison RI 721 Yale Ave. Terrace Park Ohio Charles Taylor Sons Co. MAURER James A. E 5519 N. Lake Dr. Milwaukee 11 Wisc MAURER Robert D. G Corning Glass Works Corning N. Y. MAUSER H. W. Spoorsingel 68 Delft Holland Royal Delftware Manufactory MAVOR Wilfrid E Ferro Enamels Canada Oakville Ont Canada Ltd. MAXSON Elwyn L. M 1208 Isabel St. Burbank Calif ROSTER 71 MAY L. F. R Standard Ultramarine & Color Co. Huntington 18. W. Va MAYER Walter S. W Mayer China Co. Box 561 Beaver Falls Pa LYFIELD Manville J. WI ' 1827 Auburndale Ave. Chattanooga 5. Tena American Lava Corp. MAYNARD Fred A. M 45 E. 250th Euclid Ohio Harshaw Chemical Co. MAYNARD Frederick H. G Corning Glass Works 1 Jackson St. Wellsboro Pa MAYS George A. S - Box 68 Niles Calif California Pottery Co. MEDERT Warren C. GI 5320 Melvin Dr. Toledo 14 Ohio Illinois MEEKA Edward SI Metropolitan Brick Inc. Box 27 East Palestine Ohio MEGLES John E. Jr. G 7 Washington St. Box 148 Cokeburg Pa Corning Glass Works MEID William J. M 203 Elm St. Glenview III Lindberg Engineering Co. MEILING Gerald S. 1128 Lorraine Dr. Salt Lake City Utah MEINKEN Robert H. B 29 Myrtle Ave. North Plainfieid N. J. Bell Telephone Labs MEIRESONNE Arthur C. G 700 Village Dr. Columbus 14 Kimble Glass Co. Ohio MEJIA Lorenzo M Colombia Brewers Industries Inc. 30 Broad St New York 4 N. . ELOY C. L. RI Res Dept. Rm A406 . Bethlehem Steel Co. Bethlehem Pa MENG Edwin R. R National Carbon Co. Box 6087. Cleveland 1 Ohio MENGSHOL Clarence O. E American Radiator & Standard Sanitary Corp. 1089 Essex St. Richmond Calif MENNIE Alan J. International House Berkeley 4 Calif MERCER James W. 3216 Lambeth Circle Doraville Ga MERCK Walter J. R1 25 Addison Dr. Short Hills N. J. M. W. Kellogg Co. MEREDITH Edward J. R Box 1533 Birmingham 1 Ala Universal Atlas Cement Co. MEREDITH Neil F. RI Box 281G R.R. 2 Tiffin Ohio Basic Inc. MERIWETHER B. Corbin W Deena Products Co. Arlington Ky MERLINI Ing Francesco Colonnata Florence Italy MERRIAM Jack G. RI 727 N. Wildwood Mundelein III Titanium Alloy Mfg Div National Lead Co. MERRIMAN Seth G. G 2722 Lincolnshire Blvd Toledo 6 Ohio Owens Kimble Div MERRITT Clarence W. WFI Box 464. Alfred N. Y. State University of New York College of Ceramics at Alfred Univ MERRITT Lester M. XI 654 Wilson Ave. Columbus 5 Ohio Industrial Commission of Ohio VOL 35 No. 10 1956 MERRY E. B. Jr. SI Merry Bros. Brick & 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 Upson La New Brunswick N. J. MESSIMER Laverne A. GI Holophane Co Newark Ohio METAL & THERMIT CORP George C. Betz 100 Park Ave. New York 17 N. METZ G. F. M 816 Cypress Rd Vero Beach Consulting Engineer METZ Gilbert F. Jr. 1203 State St. Rolla Mo. Fla METZGER A. J. RI Dept. of Ceramic Engineering Virginia Polytechnic Institute Blacksburg Va METZGER H. M E. E. Zimmerman Co. 1704 Keenan Bldg Pittsburgh 22 Pa MEULI 2nd Lt. William P. Wright Air Development Center Area B Patterson 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. Alexandria Va Apt 302 ( Libbey Glass Co. - MEYER L. Hydraulic Brick Co. 705 Olive St. St. Louis 1. Mo. MEYER William W. W R. R. 1. Box 632 Annandale Va U. S. Tariff Commission MEYERHOFER E. A. Meyerhofer & Co. Forchstrasse 2 Zurich 32. Switzerland SCHOLER Hans Carl Spittelerstrasse 1 Liestal Switzerland Tonwerk Lausen AG MEYSEL John J. Refracton Ltd. Zurich 2 Genferstrasse Zurich Switzerland MICHAEL Frank L. EI 319 Norbourne 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. EI 164 E. Essex Ave. Lansdowne Pa Vitro Mfg Corp. MICHENER John William G Research Laboratory Corning Fiberglas Corp. Newark Ohio MICKWITZ Alexander von B 701 Main St. Latrobe Pa Stupakoff Div Carborundum MIDDLESWARTH Earl T. G 7 Moody St Amesbury Mass Co. Hytron MIDDLETON George J. M L. H. Butcher Co. 3628 E. Olympic Blvd. Los Angeles 23. Calif MIDGETTE Willard B. M Picher Co. Chemical Div 1501 Oliver Bldg Pittsburgh 22 Pa MIKE Thomas M. 40 West St. Hornell Y. MILANI Helio Box 926. Alfred N. Y. MILDWOFF Ben G Bent Glass Works Inc. 85-25 126th St. Richmond HIE 18. N. MILILLO Frank A. EJ 167 Lexington St. Eas Boston 18. Mass Arthur D. Little Inc. MILLAR N. C. Frit Factory Radiation Group Sales Ltd. Grappenhal Works Warrington Lancs England MILLER Alan D. 542 E. 83rd St Seattle Wash MILLER B. L. W Royal China Inc. Sebring Ohio MILLER Boyd C. M Miller Equipment Co. Box 1566. Salisbury N. C. MILLER R. W Washington Porcelain Co. Willow St. Washington N. J. MILLER Fred W. R Frankiin Manor 114 Franklin St. Bldg 3 Apt 3-2 Morristown N. J. Carborundum Co. MILLER Grant E. EI Ferro Corp. 4150 E. 56th St. Cleveland 5 Ohio MILLER Harold E 5736 N. Tal~-nan Ave. Chicago 45 111 Ohmite Mfg Co. MILLER Harold D. M 189 Circle Dr Plandome Manor Long Island N. Y. B. F. Drakenfeld & Co. Inc. MILLER Henry E. R Chicago Wheel & Mfg Co. 1101 W. Monroe St Chicago 7 Ill MILLER Howard L. RI Libbey Glass Co. Box 4278 Charleston W. Va MILLER James L. R 131 Peach St Park Forest Ill Norton Co MILLER John B. MI Third St Lewiston N. Y. Titanium Alloy Mfg Div National Lead Co. MILLER John W. W New Castle Refractories Co. New Castle Pa MILLER Jorge Smith Casilla 187. Cristalerias 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 Glen Ave. Elmira N. Y. Corning 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. 282 Sherman Ave. N. Hamilton Ont Canada MILLER R. W. G Columbia 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 Illinois Box 1019 Oakland 4 Calif MILLER William A. R Carborundum Co. Falconer N. Y. MILLER William A. 306 E. Madison St. Gibsonburg , LLICAN Kenneth L. R Aluminum Co. of America Ohio 3300 Missouri Ave. East St. Louis Ill MILLIGAN Chester E. R Electro Refractories & Abrasives 4814 Loma Vista Ave. Corp. Los Angeles Calif MILLIGAN Lowell H. B Norton Company One New Bond St. Worcester 6. Mass MILLIKEN Edward C. SI 444 W. North Ave. East Palestine Ohio Natco Corp. MILLIKEN Frank H. S Bowerston Shale Co. Bowerston Ohio MILLIKEN Joseph E. SJI 1308 South 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 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 MINARD Richard A. B . Brookfeld 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 Cark Co. MINNICK L. John R 305 Zoyer Rd Cheltenham G. & W. H. Corson MINSHALL John B. R Kaiser Aluminum & Chemical Pa Sales Inc. 3 Gateway Center Pittsburgh 22 Pa MINTON G. Z. GI Pittsburgh Plate Glass 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 & Ceramics Dept. Box 1088. Schenectady N. Y. MITRA H. K. I 12 A Road East Jamshedpur E.R. India Tata Iron & Steel Co. Ltd. MIXER William G. Jr. W 315 W. Lima St. Findlay Ohio Radio Corp. of America MOCHEL Mrs. Ellen Lunn G Corning Glass Works Corning N. Y. VOL 35 No. 10 1956 MOCHEL John M. B 97 Hillcrest Dr. Painted Post Corning Glass Works MOCKRIN Isadore B Pennsylvania Salt Mig Co. Research & Development Div Box 4388 Chestnut Hill P.O. Y. Philadelphia 18 Pa MOEBUS C. R. M United Clay Mines Corp. Trenton N. J. MOFFAT John Jr. R 12255 Miranda St. North Hollywood Calif Gladding McBean & 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 St. Newton Mass MOHANTY Gajendra Nath 1 6 Kalimati Rd E. Tatanagar India M^ HL M^ HLHelmuth W Fabrica de Loza La Favorita S.A. Palma Norte 308 Despacho 312 Mexico , D. F. MOHLER Neal F. SI 206 Dogwood Park Forest Ill 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 N. MOLLER J. Aall Porsgrunds Porselaensfabrik Porsgrund Norway MONACK A. J. G 287 Mortimer Ave. Rutherford N. J. Consulting Engineer MONAGLE William T. R Lloyd Ave. Stanhope N. J. Reaction Motors Inc. MONETA Fausto Via Mambretti 9 Milano Ditta Giuseppe Moneta Italy MONG Lewis E. R 8506 Loughborough P1 Chevy Chase 15 Md National Bureau of Standards MONINGER Richard E. W Harding Ave. East Liverpool Wellsville China Co. Ohio MONKS Douglas E. 133 Hillside Terrace Irvington N. J. MONKS J. R. G 4714 Harbord Dr. Toledo 13 Ohio 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 Owens Glass Co. Jewella Rd Shreveport La MONTGOMERY Thomas B. G Pittsburgh Plate Glass Co. 632 Ft Duquesne Blvd. Pittsburgh 22 Pa MONTGOMERY Wayne C. W Aluminum Co. of America 230 Park Ave. New York 17 N. Y. MOODY H. Leslie D Hyalyn Porcelain Inc. Box 460 Hickory N. C. MOODY Willis E. BI School of Ceramic Engineering Georgia Institute of Technology Atlanta Ga MOONEY Edward L. General Laboratory Norwich Y. W Assoc Inc. MOORE Carleton B. 391 S. Wilson Ave. Pasadena Calif MOORE Charles H. B R. Mallory & Co. 3029 E. Washington St. Indianapolis 6. Ind MOORE Dwight G. EFI Mineral Products Division National Bureau of Standards Washington 25 D. MOORE H. Dept. of Giass Technology University of Shemeld Elmfield Northumberland Rd Shemeid 10 England MOORE Henry G 38 Potter Ave West New Brighton Staten Island N. Y. Metro Glass Co. MOORE James M. S Ashe Brick Co. Van Wyck S. C. MOORE John G. W 405 E. Popiar St. Robinson 2 Ill Case Mfg Corp. MOORE Matthew S. Fab 241. Clemson College Clemson S. C. MOORE & MUNGER Murray Rushmore Jr. 33 Rector St. New York 6 N. Y. MOORE Richard S. RI Harbison Refractories Co. 1800 Farmers Bank Bldg Pittsburgh 22 Pa MOORE Robert E. 1607 Campus Rd Toledo 6 Ohio MOORE Robert F. R 3345 Forbes St. Pittsburgh 13 Pa Jones & Laughlin Steel Co. MORAN J. J. G Landis Ave. & Spring Rd Vineland N. J. Kimble Glass Co. MORELL N. L. R 313 Union Bank Bldg Bethlehem Pa N. L. Morell Co. MORENA Alfred WI 90 Hazel St. Clifton N. J. Mucon Corp. MORESCO Albert J. Gen. Del Alfred Y. MORGAN John M. WJ 42 Laurel Dr Scranton Pa General Electric Co. MORGAN Raymond W. R R. W. Morgan Co 11695 Detroit 39 Mich Woodbine MORGAN Reginald W. G Ball Brothers Co. Inc. Muncie Ind MORGAN Robert A. WI Pass & Seymour Inc. Syracuse N. 1 MORGAN Stuart F. WI Marshnere Mattapoisett Neck Rd Mattapoisett Mass J. I. Paulding Inc. MORGAN Willard L. G 1203 Moundview Ave. Newark Ohic Corning Fiberglas Carp MORGAN W. R. G Sterling Grinding Wheel Co. Box 801. Tiffin Ohio MORNIN Bob L. WI 3885 Pierce Wheatridge Colo Coors Porcelain Co. MORREN Georges 42 Bd Guillaume Van Hacien Forest Brussels Belgium Diamant Boart MORRIS Ernest D. 15 Irby Rd Heswall Cheshire England Morgan Refractories Ltd. MORRIS George J. E Research Dept. Ferro Corp. 4150 E. 56th St. Cleveland 5 Ohio ROSTER MORRIS Irvine H. W Ferro Corp. 4150 E. 56th St. Ceveland Ohio MORRIS John L. W 14427 Allingham Norwalk Calif Durochrome Decalcomania Co. MORRIS W. C. G 1251 Mayfield Ridge Cleveland 24 Harshaw Chemical Co. Inc. Ohio MORRISON Boone H. G B. F. Drakenfeld & Co. Inc. Box 519 Washington Pa MORRISON Neil T. M Bell Research East Liverpool MORRISON R. F. M 384 Gulf Rd Elyria Ohio Harshaw Chemical Co. Ohio MORRISON Wallace S. M Illinois Water Treatment Co. 840 Cedar St. Rockford Ill MORSE Arthur E. GJ 2735 Woodstock Columbus Ohio Federal Glass Co. MORSE CHifford E. G Dominion Glass Co. Ltd. Box 190 Montreal Que MORSE George T. WF Smooth Mfg Co. 572 Communipaw Ave. Jersey City 4. N. J. MORTON POTTERY CO Canada S. W. Rapp Jr. 315 W. Jefferson St. Morton Ill MORTON William A. G 46 Standish Blvd. Mt. Lebanon Pittsburgh 28 Pa Loftus Engineering Carp MOSAIC TILE CO Zanesville Ohio MOSER Berthold B. Industria Ceramica Ltda Apartado Aereo 4829 Bogota Colombia MOSER John B. B 243 Ashland Ave. Evanston Ill Northwestern University OSER John L. RI 1210 Acorn Dr Dayton 9. Ohio W. H. Kiefaber Co. MOSS LeRoy L. EI 3553 Ingleside Rd Shaker Heights 22 Ohio Ferre Corp. MOTSCH F. R. G Foster Forbes Glass Co. Marion Ind MOULD Richard E. G Preston Labs Box 149. Butler Pa MOULD W. J. W Steubenville Pottery Co. Box 1030 Steubenville Ohio MOUNT CLEMENS POTTERY CO Charles E. Doil Mount Clemens Mich MOURAUD Paul H. W 14 Ingleside Rd Upper Montclair N. J. Madden Co. MOWREY Fred W. GI 108 Rodgers Dr New Kensington Pa American Window Glass Co. MUAN Amulf B Pennsylvania State University 23 Mineral Sciences Bldg University Park Pa MUCCIGROSSO Angelo Box 716. Alfred N. Y. MUELLER Edward E. RI School of Mineral Engineering University of Washington Seattle 5 Wash MUELLER Ferd A. R 1360 Rudd Canon City Colo Freeman Fire Brick Co. VELLER 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 35 No. 10 1956 MULL Lee R. G Corning Fiberglas Corp. Barrington N. J. MULLADY Russell E. M 459 E. High St. New Philadelphia Ohio Titanium Alloy Mfg Div National Lead Co. MULLAN Joseph S Champion Brick Co. 7600 Pulaski Highway Baltimore 6 Md MULLEN Willard F. M Klinger Heights State College Pa Wright Corp. MULLER Gerhard Staatliche Manufaktur Berlin Hartmannstrasse 1-3 13a 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 Products Co. West Lafayette Ohio MULLITE REFRACTORIES CO Edward L. Bohn 10 Canal St. Shelton Conn MULROY James P. EI 965 Lafayette Ave. Buffalo 9. N. Y. Buffalo School Dept. MULRYAN Henry W Sierra Talc & Clay Co. Box 390 South Pasadena Calif MULVANE O. E. E 4138 N. 21st St. Milwaukee 9 Wisc A. O. Smith Corp. MUNDY O. S. WT 426 Park Ave Wheaton Ill Western Electric Co. MURGATROYD John B. Rockware Glass Ltd Rockware Ave. Greenford Middlesex England MURPHY Edward J. W Charles B. Chrystal Co. Inc. 53 Park Pl New York 7. N. MURPHY Harry T R Climax Fire Brick Co Climax Pa MURPHY Remington M. 7744A Wagner Way Lynnewood Gardens W 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 Indiana University Ind MURRAY Louis J. Vaal 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 Ill MURRAY Robert S. G B. F. Drakenfeld & Co. Inc. Washington Pa MUSSELMAN H. G. G 4413 Old Frederick Rd Baltimore 29 Md Lowrey Glass 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 Clay Co. Box 127 Salt Lake City Utah MYERS Charles V. W Eljer Co. Third Ave. Ford City Pa MYERS Thomas J. G 2525 Seventh Ave. Altoona Pa Sylvania Electric Products Inc. MYERS Wilbur C. B 2711 W. 129th St. Gardena Calif National Cash Register Co. MYERSON Martin W Myerson Tooth Corp. 90 Hamilton St Cambridge Mass MYGDAL Rolf L. W 1460 Painter Circie Apt 3 St. Laurent Que Canada Pilkington's Tiles Canada Ltd. MYINT Maung S. Box 288 State College Pa MYINT Simon M. K. S University of Pennsylvania 3400 Spruce St. Philadelphia 4 Pa N NADLER Marion R. B 325 Enright Ave. Dayton 3 Ohio Patterson Air Force Base NAGAN Harold R. 8132 Sepulveda Pl Van Nuys Calif NAKAMURA H. Henry B Armour Research Foundation of Illinoi Institute of Technology 3427 S. Federal St. Chicago 16. Ill NAKAMURA Yoshikazu Shoko Glass Co. Ltd. 1. chome Ginza Chuo Tokyo Japan NANCE Taylor E. R 5223 Alder Dr Mission Kans Corning Fiberglas Corp. NAPIER John B. S 3574 Napier Ave. Macon Ga Cherokee Brick & Tile Co. NAPOLITANO Albert G National Bureau of Standards Dept. of Commerce Conn Ave. ^ Van Ness St. Washington 25. D. NARASIMHAN Malur D. Rm 4-051 Ceramics Div Massachusetts Institute of Tech Carabridge 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 4 Calif NATCO CORP R. A. Shipley 327 Fifth Ave. Pittsburgh 22. Pa NATIONAL ENGINEERING CO SIMPSON MULLER DIV 0 7 E. B. Henby - + 49 W. Washington Blvd. Chicago 6. III NATIONAL INDUSTRIAL SAND ASSN V. P. Ahearn Munsey Bldg Washington 4 D. NATIONAL LEAD CO Alex Stewart 111 Broadwa Neyw 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 225 S. 15th St. Philadelphia 2 Pa NATIONAL RESEARCH CORP Philip J. Clough 70 Memorial Dr. Cambridge 42 Mass NAUDOT Jacques Cerabati 10 Rue Pasteur Pont Sainte Maxence Oise France NAVIAS Louis BF Research Lab General Electric The Knolls Schenectady N. Y. Co. ROSTER 77 f AVRATIEL Hans Jahnstr 3. Lauf Pegnitz Bavaria Germany Sembach & Col EAL James E. R 164 Sandford Ave. Morth Plainfeld N. J. Manville Inc. E N Terence P. Edward Curran Engineering Ltd. Cardiff Wales IDREBERG Roy G. X 315 Putnam Ave. Zanesville Ohio EEL Lee III Box 2546 Georgia Tech Atlanta Ga EELY Homer E. Jr. G 404 E. 11th Ave. Tarentum Pa Pittsburgh Plate Glass Co. NEFF Edward D. R Box 205. Templeton Pa Harbison Refractories Co. NEFF John M. S Armour Research Foundation 10 W. 35th St. Chicago 16 III NEIMAN Robert R Whip Corp. Inc. 411 W. Avery Ave. Louisville 8 Ky NELSON Forrest W. EI A. O. Smith Corp. 3533 N. 27th St. _ Milwaukee 1 Wisc NELSON James A. R University of Illinois 204 Ceramics Bldg Urbana Ill NELSON Richard P. 8520-32nd Ave. N. W Seattle 7 Wash NELSON Robert E. G 20 Spring St. Seneca Falls N. Y. Sylvania Electric Products Inc. NELSON Robert T. R Columbia Steel Co. Box 510. Provo Utah NELSON William I. G 118 Mary St. Binghamton N. Y. Solvay Process Div Allied Chemical & Dye Corp. NEKENSTONE Mare 3 10232 Frankstown Rd Pittsburgh 35 Pa Westinghouse Electric Corp. Keystone Abrasive Wheel Co. Gregg & Hammond Aves Carnegie Pa NETZSCH Erich Maschinenfabrik Gebrueder Netzsch Werkstrasse 19 Selb Bayern Germany NEW Ryland J. S National Sewer Pipe Ltd. Box 36. Oakville Ont Canada NEWARK Frank F. W Aluminum Co. of America 1450 Terminal Tower Cleveland 13 Ohio NEWARK Martin M Simonds Abrasive Co. Tacony & Fraley Sts Philadelphia 37. Pa NEWBOLD GENERAL REFRACTORIES LTD Gavey St. May^-eldN. S. W. Australia NEW CASTLE REFRACTORIES CO R. W. Rowland New Castle Pa NEWCOMB Rexford Jr. EI 915 Dodge Lake Geneva Wisc RX Chemical Co. ' NEW JERSEY PORCELAIN CO J. M. Gilfillan Box 908 Trenton 5. N. J. NEWKIRK Terry F. B General Electric Co. Power Tube Dept. Schenectady N. Y. NEWTON Avery C. R The Refractories Institute First National Bank Bldg Pittsburgh 22 Pa VOL 35 No. 10 1956 NICHOLSON Albert H. D Federal Glass Co. 515 Innis Ave. Columbus 7 Ohio NIEMAN A. H. G Ohio Lime Co. Woodville Ohio NIELSEN H. Bach M Nichols Engineering & Research 70 Pine St. New York 5 Y. Corp. NIKLEWSKI B. K. Main Enamel Mfg Co. Ltd. Gothic Works Angel Rd Edmonton London N. 18. England NILES FIRE BRICK CO Carey E. Lindsay 165 E. Park Ave. Niles Ohio NIPPON TOKI KAISHA LTD Jun Isagawa # Noritakeshinmachi Nishiku Nagoya Japan NISULA Chester A. R 716 Main St. Riverton N. J. Simonds Abrasive Co. NIXEN David G Hytron Kent & Warren Sts Newburyport Mass NIYOGI D. P. M Bengal Enamel Works Ltd. P. O. Bengal Enamel Palta 24 Parganas West Bengal NOBES Frederick L. Carborundum Co. Ltd. Trafford India 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 315 Front St. Berea Ohio Nock & Son Co. NODA Tokiti Dept. of Applied Chemistry Faculty of Engineering Nagoya University Chikusa Nagoya Japan NODURFT Russ E. W 9353 Parrot Downey Calif Vernon Kilns NOE James T. S 411 Madison Ave. Brookville Pa Hanley Co. NOHLE Richard C. SI Claycraf Co. Box 865 Columbus 16. Ohio 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 St. Corning N. Y. Corning Glass Works NORDGREN Harry Aktiebolaget Gustavsberg Fabriker Gustavsberg Stockholm Sweden NORDMEYER Rudy L. S Valley Brick & Tile Co. Box 353 Mission Texas NORDQUIST Clarence E. 4328 Bagley Ave. Seattle 3 Wash NORDQUIST Lawrence E. BJ Dubilier Electric Corp. 1605 Rodney French Blvd. New Bedford Mass NORDYKE J. S. MF Hammond Lead Products Inc. 1602 Oliver Bldg Pittsburgh 22. Pa NORMANDEAU Pierre D 3660 Hutchison St. Montreal 18 Que Canada NORRIS Charles R. W 4024 Diehl Ave. Cincinnati 36 Ohio Charbeaux Pottery THERMADOR CORP Edgar H. Freeman 20118 E. Valley Walnut Calif NORTH AMERICAN PHILIPS CO INC C. J. Woods Research & Control Instruments Div 750 S. Fulton Ave. Mt. Vernon Y. NORTH AMERICAN REFRACTORIES CO Robert A. Moffet 1012 National City E. Cleveland 14 Obio Sixth Bldg NORTHWESTERN GLASS CO Edward S. Campbell 5301 E. Marginal Way Seattle , Wash NORTHWESTERN TERRA COTTA CORP Burnette Purcell 1750 Wrightwood Ave. Chicago 14 III NORTON Charles L. Jr. RF Babcock & Wilcox Co. 161 F. 42nd St. , New York 17 Y. NORTON CO O. J. Whittemore Jr. Worcester 6 Mass NORTON Frederick H. Dept. of Metallurgy Div of Ceramics BFI Mass Institute of Technology Cambridge 39. Mass NORTON George R. Pfaudler Co Res Lab 1000 West Ave. Rochester N. Y. NORWALK Lt. Marshall H. X WADC Area B Box 8604 Patterson AFB Ohio NORWOOD J. Nelson Life X Alfred University Alfred Y. NOVY Otto R. E Chicago Vitreous Corp. 1425 S. 55th Ct Cicero 50 III NOWAK John M. B Bell Aircraft Corp. Box 1 Buffalo 5. Y. NOWELL Dorroh L. Jr. S 202 Broad St. Augusta Ga Merry Bros. Brick & Tile Co. NUSSBAUM Theodore 170 Ellis Ave. Irvington N. J. NYQUIST Roy A. G 3650 Beechway Blvd. Toledo 14 Libbey Glass Co. Ohio Le) OAKLEY W. W. GF Box 35. Corning N. Y. Corning Glass Works O'BANNON L. S. E 2239 Farleigh Rd Columbus 21. Ohio Battelle Memorial Institute OBERST Clair R. M Industrial Ceramic Products Inc. 965 W. Fifth Ave Columbus 8. Ohio OBERST Robert B. I 323 Weymouth Ln Columbus 4 Ohio O'BRIEN Neil H. SJ 20 Central Dr. Port Washington N. Y. O'BRIEN William F. E Hope Rd Shrewsbury N. J. American Potash & Chemical Co. OCHS A. C. BRICK & TILE CO Elmer E. Apt Springfield Minn O'CONNELL Thomas B. G Libbey 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 Trenton 8 N. J. O. Hommel Co. B O'DELL Harold L. W Hamilton Porcelains Ltd. 38 Elgin St. Brantford Ont Canada ODOM Paul R. M B Winship Gardens J. M. Huber Corp. OESCH Robert B. S 401 W. Carolanne Dr. Macon Ga Marshall Texas Marshall Brick Co. ROSTER 79 OESTERLE Henry E Roesch Enamel & Mfg Co. W. Main & N. 24th Sts Belleville 111 OESTERLE Rober A. E 2427 W. Main Belleville Ill EN D. P. S Ogden Engineering Co. Box 218 Ottawa Ill OGDEN Ellsworth P. RF Box 537 Granby Colo Harrop Ceramic Service Co. OGDEN John T. GF Glass Industry 55 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 5 Ohio OHIO LIME CO A. H. Nieman Woodville Ohio OHLIGER Lewis P. G 209 Ridgeview Dr. East Rochester N. Y. Bausch & Lomb Optical Co. OHNSORG Roger W. Box 1049 Alfred N. Y. OHNYSTY Basil RJ University of Illinois 204 Ceramics Bldg Urbana III OLD HICKORY CLAY CO Lee F. Powell Box 271. Paducah Ky O'LEARY W. J. R 24 Seminole Ave. Claymont Del E. I. du Pont de Nemours & Co. OLENCHUK Daniel L. R 1300 Laird Ave Aliquippa Pa Jones & Laughlin Steel Corp. OLIVER D. A. Messrs Wm Jessop & Sons Ltd. IVER Brightside Works Sheffield Engiand IVER Joan C. E Porcelain Enamel Institute 1145 19th St. N. W. Washington 6. D. OLIVERIC William G Rolland Glass Co. Box 232 Clarksburg W. Va OLSEN Eric D R. R. 63. Dundee III Haeger Potteries Inc. OLSEN John M. G E. I. du Pont de Nemours & Co. Inc. Electrochemicals Dept. Wilmington 98. Del OLSEN Rangwald S. EI 1137 Grant St. Evanston Ill Armour Research Foundation OLSON E. E. G A. H. Heisey & Co. Newark Ohio OLSON Hjalmar Aktiebolaget Gustavsbergs Gustavsberg Sweden OLSON Ole A. R Fabriker 5 Wrenwood Ct Webster Groves 19 Mo. Laclede Co. Div H. K. 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 25 D. C. OREFRACTION INC Albert L. Kreuer 7425 Thomas St. Pittsburgh 8 Pa VOL 35 No. 10 1956 ORMSBY Walter C. W National Bureau of Standards Washington 25 D. ORNELLA LeRoy F. GJ 3206 Upton Ave. Toledo 6 Ohio Glass Fibers ORR David B. Inc. R.R. 2. Oneonta Y. ORTEPIO Salvatore W General Ceramics Corp. Crows Mill Keasbey N. J. ORTH Howard S. W Industrial Ceramic Products Inc. Rd 965 W. Fifth Ave. Columbus 3. Ohio ORTH Howard S. Jr. W 236 Fairway Dr. Columbus Ohio Industrial Ceramic Products Inc. ORTMAN Curtis D. W A C Spark Plug Div General Motors Corp. 1300 N. Dort Hwy Flint 2 Mich ORTMAN Fred B. RFI Gladding McBean & Co. 1275 Harrison St. San Francisco 3. Calif ORTON EDWARD JR CERAMIC FOUNDATION J. L. Carruthers 1445 Summit St. Box 146 Sta A. Columbus , Ohio ORTON Mrs. Edward Jr. 39 W. Torrence Rd Columbus Ohio ORZANO Michael J. SI Claycraft Co. Box 866 Columbus 16 Ohin 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 Newcastle S. England OSTERHOLTZ Carl R 5 May^-eid Pl Metuchen N. J. Valentine Div A. P. Green Fire Brick Co. OSTRANDER Eugene C. G Kopp Glass Inc. Box 8255. Swissvale Pittsburgh 18. Pa OSTRANDER Van R. B Endevco Corp. 161 E. California St. Pasadena Calif OTLEY J. D. S John B. Kelly Inc. of Pean 1720 Cherry St. Philadelphia 3. Pa OTRHALEK Joseph V. W Wyandotte Chemicals Corp. Wyandotte Mich OTTAWA SILICA CO George A. Thornton Box 437 Ottawa III OTTO George H. S 53 W. Jackson Blvd. Chicago 4. III Consultant OTTO William H. Corning Newark Ohio G Fiberglas Corp. OTTOSON Axel GI 4300 Highland Ave. Shadyside Imperial Glass Corp. OWEN Frederick E. R Electrical Refractories Co. Ohio East Palestine Ohio OWEN J. D. 1 R. Fowler Ltd. Fitzroy St. Marrickville Sydney N.S.W. Australia CORNING FIBERGLAS CORP A. C. Siefert Newark Ohio ILLINOIS W. D. Miller Box 1019 Oakland 4. Calif ILLINOIS E. W. Summers Technical Center 1700 N. Westwood Ave. Toledo 7. Ohio OWENS James S. W Champion Spark Plug Co. Ceramic Div 8525 Butler Ave. Detroit 11. Mich OXLEY Charles A. WJ 1508 Park St. Robinson Ill Case Mfg Corp. P PABST John G. M 52 N. Main St. Butler Pa Saxonburg Ceramics PACHL Margare D University of North Dakota Ceramics Dept. Grand Forks N. D. PACIFIC CLAY PRODUCTS John D. Fredericks Box 2178. Terminal Annex Los Angeles 54 Calif PACIFIC COAST BORAX CO M. H. Pickard 100 Park Ave. New York 17. N. V. PACKMAN Willard D. WI 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 & Associates PALMER Rufus N. M 476 Broadmoor Ave. Pittsburgh 34 Pa Consultant PALMER Willard E. SI 768 N. Cross St. Newcomerstown Ohio Clay City Pipe Co. PALMERI Victor R. E Hermetite Corp. 702 Beacon St Boston 15. Mass PALMOUR Hayne III BI Box 204. Signal Mountain Tenn American Lava Corp. PALTZER Clifford XJ 1100 Peace St. Peila Iowa PANGELS Alfred A. WJ Ave. Polanco 18 Mexico 5. D. F. Sanitarios El Aguila S. A. PANGELS Heinz J. W Mosaic Tile Co. Pershing Rd Zanesville Ohio PAPER MAKERS IMPORTING CO INC Charles Brian 44 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 Glidden M. Jr. D Glidden Pottery Inc. Alfred N. Y. PARKER Harry BI 1015 Quebec Terrace Silver Spring Md National Bureau of Standards PARKER Henry F. G Pittsburgh Plate Glass Co. Creighton Pa ROSTER 81 ARKER James W. Jr. S 7217 Shakespeare Rd Columbia C. Carolina Ceramics Inc. ARKER Leon G H. I. Thompson Fiber Glass Co. 3 Cordova St. Los Angeles 7 A R. Raymond W. S ^nce Clay Product Co. Box 746. Alliance Ohio Calif ARKISON Rober G. Noble Hall Rm 112. Champaign III ARMAN Donald W. 2105 Seventh Ave. N Renton Wash ARMER Jess H. Jr. G Illinois Technical 1700 N. Westwood Ave Center Toledo 7. Ohio ARNHAM H. General Refractories Ltd. Worksop Engiand PARSON James A. WI 6217 Broadway Indianapolis 20 Vitroseal Corp. PARSONS Douglas E. S Building Technology Division National Bureau of Standards Ind Washington 25. D. PARSONS J. R. R Chicago Fire Brick Co. 7531 S. Ashland Ave. Chicago 20 III PARTINGTON Philip A. Box 787 Alfred N. Y. PASCHAL Forrest A. S Box 289. Siler City N. Huber Corp. PASK Joseph A. XFI Division of Mineral Technology University of California Berkeley , Calif PASPY Stanley F Jr. R Ceramic Supply Co. Crooksville Ohio PASS J. S. W * Pass 2: Seymour Inc. Solvay Sta *, Boyd Ave. Syracuse 9 Y. F R. H. W Onondaga Pottery Co. 1856 58W. Fayette St. Syracuse +. Y. PASS & SEYMOUR Solvay Station 50 Syracuse ? Y. INC Boyd J. S. Ave. Pass PATEK Sherwood E. S Midland Brick & Tile Co. Chillicothe Mo. PATEL Chandrakant J. Box 236. Alfred N. PATERSON G. W. R Refractories Engr & Supplies Ltd. 99 Clinton St. Hamilton Ont Canada PATRICK Ens Howard W. NAS Kingsville SNA Kingsville Texas PATRICK Robert F. EI Pemco Corp. 2554 Greenmount Ave. XJ Baltimore 18. Md PATTERSON Richard C. W United States Ceramic Tile Co. East Sparta Ohio PAULSON Fred H. R 28 Greendale 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 RCH Howard C. WI - 27 Hillcrest Manor Midland Pa Louthan Mfg Co. PEARCH William M. WI Akron Porcelain Co. Akron 14 Ohio VOL 35 No. 10 1956 PEARSON Edward P. X Basic Inc. 945 Hanna Bldg Cleveland 15 Ohio PEARSON E. J. & J. LTD Charles A. G. Thomas Firebrick Works Stourbridge Worcs England PEASE Philip J. G 1405 Washington Ave. Parkersburg W. Va Demuth Glass Works Inc. PECHMAN Alexander WI 1157 E. Pasadena Pomona Calif Pomona Tile Mfg Co. PECK J. Clair SI 2433 Brookside Ln York Pa Gery Shale Brick PECKHAM George W. G Chattanooga Glass Co. Corsicana Texas Corp. PECKHAM Robert H. G Pennsylvania Optical Co. 234 S. Eighth St. Reading Pa PEDRICK W. W. G Armstrong Cork Co. Millville N. J. PEDU Richard K. MI 129 Chestnut St. Garden City N. Y. PEEL G. N. Associated Lead Manufacturers Ltd. Crescent House Newcastle 1. England PEILER Karl E. GF Hartford Co. Div Emhart Mfg Co. Box 1620 Hartford 2 Conn PEKAREK Edward G. B 4898 Waldamere Ave. Willoughby Ohio Thompson Products Inc. PELL Robert E. . 909 W. Nevada St Urbana Ill PELZ Robert W. EI 2706 Grovewood Parma 9 Ohio Ferro Corp. PEMCO CORP Richard H. Turk 501 Eastern Ave. Baltimore 24 Md PENBERTHY Larry G Penberthy Electromelt Co. 2317 47th S. W Seattle 16 Wash PENCE Forrest K. WF 1609 Scenic Dr Austin 3 Texas Ceramic Society of the South West PENNSYLVANIA PULVERIZING CO William J. Woods Jr. Two Gateway Center Pittsburgh 22. Pa PENTECOST Joseph L. 647 Monticello Dr. Fails Church Va PERENY Andrew M Pereny Equipment Co. 893 Chambers Rd Box 153. Station A. Columbus Ohio PERKINS Harreil L. M Central of Georgia Railway 1212 Haverty Bldg Atlanta 3. Ga Co. PERKINS Walter W. WI 871 Jacoby Rd Copley Ohio United States Stoneware Co. PERRY Paul E. B Allegheny Ludlum Steel Brackenridge Pa PERRY Robert F. WI Corp. Box 283. Victor N. Y. Victor Insulators Div T Circuit Breaker Co. PERRY T. Ray W 1209 Bawcom Sweetwater Texas General Electric Co. PERTUCH Walter A. R. D Franklin Institute Library 20th & Parkway Philadelphia 3 Pa PESKIN William L. R Carborundum Co. Perth Amboy N. J. PETERS Forrest I. W 113 Hendy Ave. Elmira N. Y. Corning Glass Works PETERSEN Fred A. EFI Thomas Associates 2130 Keith Bldg Cleveland 15. Ohio PETERSON Albert F. 90 Fresh Pork Pky Cambridge 38. Mass PETERSON Donald H. E 741 Hill Ave Pittsburgh 21 Pa Westinghouse Electric Corp. PETERSON Jack D. G 3029 123rd St. Toledo 11 Ohio Owens PETERSON Jack L. 320 Milan Ave. ! South Pasadena Calif Melvin L. Jonts Co. PETERSON John A. Jr. W Metal & Thermit Corp. Carteret N. J. PETERSON W. H. Jr. R Valentine Fire Brick Co. Div A. P. Green Fire Brick Co. Woodbridge N. J. PETRIE Lloyd R. W 305 Western Abingdon Ill Abingdon Potteries Inc. PETT Tyler G. G Kopp Glass Inc. Swissvale Pittsburgh 18 Pa PETTY Frank W 2771 W. 230th St. Fairview Park 26. Ohio Cleveland Ceramic Corp. PETTY Howard E. S 3131 Ryons Lincoln 2. Nebr Yankee Hill Brick Mfg Co. PFAUDLER CO Sidney W. McCann 1000 West Ave Rochester 3 N. PFEIFF C. H. R Curran Pfeiff Corp. Box 527. Metuchen N. J. PFEIFFENBERGER PFEIFFENBERGER Lucas E. University of Illinois 204 Ceramics Bldg Urbana Ill PFEIFFER W. H. EFI Frigidaire Div General Motors Corp. 300 Taylor St. Dayton , Ohio PFLEGER George E. M Harshaw Chemical Co. 3237 S. Garfield Los Angeles 22. Calif PHADKE S. Central Potteries Ltd. Itwari Nagpur 2. India PHELPS DODGE CORP MORENCI BRANCH L. L. McDaniel Morenci Ariz PHELPS Girard W. M 410 E. Magnolia Dr Morrisville Pa United Clay Mines Corp. PHELPS Stuart M. RF Mellon Institute Pittsburgh 13 Pa PHILLIPS Adrian W. Jr. R 316 Fairmont Ave. New Castle Shenango China Inc. Pa PHILLIPS Charles J. G Radio Corp. of America RCA Victor Div Bldg 56-1 Camden N. J. PHILLIPS Edwin L. MI Carolina Pyrophyllite Co. Box 2414. Greensboro N. PHILLIPS Gordon D. W Olean Tile Co. 103 S. Clark St Olean N. Y. PHILLIPS James G. RI Dept. of Mines & Technical Surveys Mines Branch Industrial Minerals Div Lydia St Ottawa Ont Canada PHILLIPS Leigh F. Box 87. East Quogue L. I. N. Y. PHILLIPS Richard A. WJ 1836 Willow Ave. Niagara Falls N. Y. Sprague Electric Co. PHILLIPS W. Eric G Duplate Canada Ltd. Box 367 Terminal A Toronto Ont Canada PHOENIX Richard C. I R. R. 1. Wynnewood Bound Brook N. J. ROSTER 3 PICKARD M. H. M Pacific Coast Borax Co. 100 Park Ave. New York 17 N. Y. PICKETT Albert R. R Aluminum Co. of America 150 Alcoa Bldg Pittsburgh 19 Pa I ER Arthur O. M 5 Trevor Court Rd Rochester 10 N. Y. Heany Industrial Ceramic Corp. PIERCE GLASS CO J. G. Bozzo Railroad Ave. Port Allegany Pa PIERCE J. Allen R 798 Chalmers Pl Pittsburgh 16. Pa Harbison Refractories Co. PIERPONT Harian T. Jr Norton Co. 1 New Bond St. Worcester 6 Mass PIERSON James F. MI Pemco Corp Sales Dept. 5601 Eastern Ave. Baltimore 24 Md PIGOTT Phillip G. R Box 345. Norris Tenn United States Bureau of Mines PILKINGTON Lawrence H. A. Messrs Pilkington Bros. Ltd. Glass Works St. Helens England PINCUS Alexis G. B General Electric Co Res Lab Box 1088. Schenectady N. Y. PINNEY J. M. W Harker Pottery Co. East Liverpool Obio PINNOW Harley R. W Pond St. R. R. 19 East Liverpool Ohio Hall China Co. PINOTTI Fred D. G 2324 Middlesex Dr. Toledo Ohio Kimble Glass Co. PISULA J. Donald R Corning Glass Works Corning PITTENGER John T. W Box 207. Newell W. Va N. homer Laughlin China Ca. FTMAN Jack G illinois Technical Center 1700 N. Westwood Ave. Toledo 7. Ohio PITTMAN William C. R 410 Whitthorne Dr Wyoming Cincinnati 15. Ohio - Chas Tayler Sons Co. PITTS Joseph W. E 5714 Beech Ave. Bethesda 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 358 Grand St. Newburgh N. Y. PLACE Tom M. BI Helipot Corp. 916 Meridian St. South Pasadena Calif PLACE Thomas M Jr. B 2413 W. 116th 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 McBean & Co. 2901 Los Feliz Blvd. Los Angeles 39. Calif PLANJE Theodore J. M. B 4 Summit Ave. Rolla Mo. Missouri School of Mines PLANK Ross D. W 2835 Shadowlawn Ave. Los Angeles 39. Calif B. F. Wagner & Co. PLANKENHORN William J. EFI Chicago Vitreous Corp. 1427 S. 55th C Cicero 50 III VOL 35 No. 10 1956 PLATT Allan S. S Structural Clay Products Institute 1947 Grand Central Terminal Bldg New York 17 N. Y. PLEASANTS Luther E. Jr. G 6002 Brookheld Rd Richmond Va Allied Chemical & Dye Corp. PLOETZ Edwin C. H. EI 680 S. Lincoln Ave. Kankakee Ill A. O. Smith Corp. PLOETZ George L. W 261 Swaggertown Rd Scotia 2 Y. General Electric Co. PLUMBO Victor A. G General Glass Equipment Co. 5 S. Virginia Ave. Atlantic City N. J. PLUMMER Harry C. SF Structural Clay Products D. 1520 18th St NN.. W. Washington 6. C. Institute PLUMMER Norman M State Geological Survey of Kansas Lawrence Kans PLUMMER William A. G Corning Glass Works Corning N. Y. PLUNKETT Jerry D. 78 Westgate Cambridge 39 Mass PLUSCH John A. W 63 Spruce St Westfield Mass Cortland Grinding Wheels Corp. POFFENBERG Scott M 11616 Chenault St. Los Angeles 49. Calif POHLE Joachim H. P. Pohle Co 37 A Sutelstrasse Hannover Buchholz Germany POISSON Louis Faiencerie de Badonviller Badonviller Meurthe et 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. BFI 2592 S. Shore Blvd. White Bear Lake 10. Minn Minnesota Mining & Mfg Co. POLES Alfred P. W 325 Arborlea Ave Morrisville Pa Clifton Ceramic Mfg Co. POLHEMUS D. W. R Carborundum Co. Perth Amboy N. J. POLK Arthur E. W R. R. 1. Dowagiac Mich Produce Terminal Corp. POLSKY Jack W. M H. L. D. Betz Co. Gillingham& Worth Sts Philadelphia 24 Pa POMEROY William T. W Sterling China Co. East Liverpool Ohio POMPEI Luigi SANAC Soc per Az Refrattari Argille e Caolini Via Martin Piaggio 13-7 Genova Italy POND Marvin H. W 221 Ridge Ave. Gettysburg Pa Keystone Ridgeway Corp. POOLE James P. G Brockway Glass Co. Inc. Plant 2 Brockway Pa PORCELAIN METALS CORP C. J. Kleinhans 1400 S. 13th St. Louisville 10. Ky PORST Edward G. EI 1418 Stonewood 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 & Chemical Corp. 1924 Broadway Oakland 12 Calif PORTER Sidney C. R Box 34. East Liverpool Ohio Consultant PORTER Wallace S. W Universal Corp. Box 188 HondoTexas PORTS David W. 212 McCullough Urbana Ill POSEY IRON WORKS INC Frank A. Fix Lancaster Pa POSLUSZNY Raymond F. R 242 E. Meehan Ave. Philadelphia 19. Pa Refractory Specialties Co. POST Benjamin F. RI Cortland Grinding Wheels Corp. Chester Mass POST Zarr A. W 5020 Elm St. Bethesda Washington 14 D. C. Melpar Inc. POSTE Emerson P. EFI 616 Baldwin St. Chattanooga 3. Tenn Consultant POSTLEWAITE Donald E. WI Universal 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 Cic Generale Ceramique 12 Rue de la Baume Paris 8 France POTTS Amos P. 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 POULTON Robert F. W 2763 N. Congress Rd Camden 4. N. J Universal Corp. POUNDSTONE William W. G Pittsburgh Plate Glass Co. One Gateway Center Pittsburgh 22. Pa POWELL John A. W 429 S. West End Ave. Lancaster Pa Radio Corp. of America POWELL Lee F. M Old Hickory Clay Co. Box 271. Paducah Ky POWELL O. E. S Indiana Drain Tile Co. Inc Box 66 Brooklyn Ind Jamestown St. POWELL RichardH. M 1279 N. Main N. POWERS Don W. 1201 Highland Ave. Abilene Texas POWERS George H. R 261 Woodfield 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 & Lomb Optical Co. 635 St. Paul St. Rochester 2. N. Y. PRACHANKHADEE Manoon Dept. of Science Ministry of Industry Bangkok Thailand PRALOW Walter E. L. Zahnfabrik Wienand Sohne & Co. Krs Offenbach Sprendlingen Germany PRATT Donald S. E 3422 Eighth Ave. Beaver Falls Pa Richardson Mfg Co. ROSTER 8 c t e e| PRECISION GRINDING WHEEL CO INC Alexander M. Blakely 3301 Torresdale Ave. Philadelphia 36 Pa PRESCOTT Frank R. G 1811 Kimball Ave Arnold Pa Pittsburgh Plate Glass Co. P. SEY Clive M Minatron Corp Belle Mead N. PRESTON Frank W. G Preston Labs Box 149 Butler J. Pa PREWITT J. K. S Elgin Standard Brick Mfg Co. Elgin Texas PREY Arthur H. MI Carborundum Co. Niagara Falls N. Y. PRICE Glen M. R General Refractories Co. Box 1673 Baltimore 3. 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 & Co. Inc. PRIDDY K. O. S Barium Reduction Corp. South Charleston 3 W. Va PRIESTLEY J. Edward Huntly Brick & Fireclay Co. Ltd. Box 14 Huntly New Zealand PRIMM Herbert E. R 1658 Elevado Ave. Arcadia Calif Harbison Refractories Co. PRINCE Alan T. BI Mines Branch Ottawa Ont Canada PRINDLE William R. G Hazel Glass Co. 15th & Jacob Sts Wheeling W. Va PRIOR Gordon M. M Box 101. Scotch Plains N. J. Whittaker Clark & Daniels Inc. - PRIOR Harold D. MI 025 Connecticut Ave. N.W. Washington 6. D. C. Titanium Alloy Mfg National Lead Co. Div PROCTOR Thomas M. Jr. Gj Corning Glass Works Corning 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. BJ Sprague Electric Co. North Adams Mass PROMAT DIVISION POOR & CO W. F. Stark 851 S. Market St. Waukegan III PRYOR Edward K. R 902 N. Acacia Whittier Calif Gigger Co. PUCKETT John P. Jr. G Leeds & 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 Castle Peak N.T Co. 1940 Ltd. Kowloon Hong Kong PULLIAM George R. B 6920 Morrison Pl Madeira Ohio Cincinnati Milling Machine Co. PULS George R Acme Brick Co. Box 425. Fort Worth Texas 1 LS Josef Austria United Enamel Works Wilhelminenstr 30 Vienna XVI Austria Vol 35 No. 10 1956 PUMPHREY William ( Murex Welding Processes Ltd. Hertford Rd Waltham Cross Herts England PUNTNEY L. E. RI 908 E. Jackson Mexico Mo. Mexico Refractories Co. PUPULIDY Alexander R 3531-85th St. Apr. 5K Jackson Heights 72 N. Arabian American Oil Y. Co. PURCELL Burnette S Northwestern Terra Cotta Corp. 1750 Wrightwood Ave. Chicago 14 III PURNELL Hugh J. R 761 Loretta St. Pittsburgh 17 Pa United States Steel Corp. PYRO REFRACTORIES CO O. E. Miller Box 488 Oak Hill Ohio Q QUIGLEY CO INC R. J. Demaison 415 Madison Ave New York 17. Y. QUIRK John F. W Battelle Memorial Institute 505 King Ave. Columbus Ohio QUIRK Virgil P. B 3002 Allen St. Owensboro Ky General Electric Co. R R Santiago E. Antunez de Mayolo Industria Nacional Ceramica y Anexos Casilla Postal 845 Lima Peru RABE N. A. W 10 W. Palmer Ave. Collingswood N. J. Universal Corp. RABIN William J. W 19A Redfield Village Metuchen N. J. Ferricore Inc. RADCZEWSKI Erast Institut fur Gesteinshuttenkunde Mauerstrasse 5. Aachen Germany RADIO MATERIALS CORP R. D. Bourgerie 3325 N. California Ave. Chicago 18. Ill RAGATZ Eugene C. M Bradley Co. 136 W. Greenfield Ave. Milwaukee 4. Wisc RAGGON Frank C. G 4202 Bowen Rd Toledo 13. Ohio Illinois RAHE Villem Box 233 Alfred Y. RAIBLE A. J. W Briggs Manufacturing 415 W. Seymour Ave. Cincinnati 16. Ohio Co. RAINE Frank F. RI 111 E. Vine St. Mexico Mo. Mexico Refractories Co. RAINEAR John F. S 73 Sharon Ave. Hamburg N. Y. Buffalo Brick Corp. RAIT J. R. Research Controller Hadfields Ltd. East Hecla Works Sheffield 9 England RALSTON O. C. MF 4333 Clagett Rd Hyattsville U. S. Bureau of Mines RALSTON Thomas E. R Harbison Refractories Md Co. 1800 Farmers Bank Bldg Pittsburgh 22 Pa RAMM Eric H. L. Brishane & Wunderlich Ltd. Lord St East Perth West Australia RAMSDELL John L. EJ 17 Ellicott Ave. Batavia N. Y. RAMSDEN C. E. C. E. Ramsden & Co. Ltd. Foley Colour & Chemical Works Fenton Trent England RAMSEY Thomas H Jr. BJ 1615 Homewood Pl Dallas Texas RAMTITE CO Louis J. Jacobs 2563 W. 18th St. Chicago 3 Ill RANDALL Theodore A. D State University of New York College of Ceramics Alfred Y. RANDOLPH Hal F. R Mexico Refractories Co Mexico Mo. RANDOLPH Rober L. Jr. BJ N. Parkdale Dr. Chattanooga American Lava Corp. RANKIN James E. Box 5021 State College Sta Raleigh N. Tenn RANKIN James J. M St. Joseph Lead Co. Box 97 Monaca Pa RANKINE Adam S. R Martinsville N. J. Manville Corp. RAPP Carl H. WI Union Inc. 900 E. Keefe Ave. Milwaukee 1 Wisc RAPP S. W. Jr. W Morton Pottery Co. 315 W. Jefferson St. Morton Ill RASMUSSEN R. K. G Mississippi Glass Co. Fullerton Calif RASMUSSEN Wayland G. S Mason City Brick & Tile Co. 200 Brick & 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 of Trenton Inc. RATCLIFFE Temple W. R 244 Buffalo St. Beaver Pa Babcock & Wilcox Co. RATHMANN Clyde L. G R. R. 3. Corning N. Y. Corning Glass Works RAUCH Harry W. G 342 Spring La Bridgeport Pa Foote Mineral Co. RAUSCHER Louis C. G 2374 Geneva Ave. Clenside Pa Philco Corp. RAY E. Haroid M B. F. Drakenfeld & Co. Inc. Box 519. Washington Pa RAY John G. G Sylvania Electric Products Inc. Cottage Place Mineola L. .. N. RAYTHEON MANUFACTURING CO Leo J. Cronin Foundry Ave. Waltham 54. Mass RAZEY Robert M. R 486 Ashland Ave. Detroit 15. Mich Great Lakes Steel Corp. REA Rober F. WI Stupakof Div Carborundum Latrobe Pa Co. REAGAN Cornelius J. S 532 Woodmont St. East McKeesport Pa - Van Ormer Brick Co. REAGAN Michael M. E Stamped & Enamelled Ware Ltd. Guelph Ave Hespeler Ont Canada REBCHOOK Gregory V. W Radio Materials Corp. 1708 W. Belmont Ave. Chicago Ill REDWINE Richard H. R. R. 1. Rural Hall N. RED WING POTTERIES C. INC Thomas M. Arnold Red Wing Minn REECE Charles W. XJ 10 S. Miller St. Greer C. REED A. J. S 521 Woodbine St. Willard Ohio National Clay Pipe Research Corp. REED Carl E. G 1410 E. Main St. Lancaster Ohio Schurtz Co. ROSTER 87 REED George C III BJ 413 25th St Apt B South Bend Ind Bendix Aviation Corp. REED Madison W. Jr. 801 Ave. G Austin Texas ... Paul H. R , pf, Fairmont Ave. New Castle Pa New Castle Refractories Co. REEVES Harold Sr. W Fitzpatrick Industries Inc. Fux 30 East Palestine Ohio REFRACTORIES INSTITUTE THE Avery C. Newton First National Bank Bldg Pittsburgh 22 Pa REFRACTORY & INSULATION CORP A. S. Arwine Port Kennedy Pa REGENBRECHT Albert Jr. G Sylvania Electric Products Inc. Burlington Iowa REGOUT Joseph F. E. N. V. de Sphinx Maastricht Holland REGOUT L. F. H. N. V. Porselein en Tegeifabriek Meerssenerweg 358 Maastricht Holland Mosa REID Frank P. American Ceramic Society 4055 N. High St. Columbus 14 Ohio REID Harry F. Jr. M McKay Co. 850 Grantly Rd York Pa REIMANN A. Gilbert W 114 Pinehurst Pl Schenectady 4 N. Y. General Electric Co. REIMER John J. WI Keystone Ridgeway Corp. Gettysburg Pa REIN Peter W 1746 W. Sycamore Kokomo Ind Kokomo Sanitary Pottery Corp. PINKER Arthur G. R Manville Sales Corp. 1530 Guildhall Bldg ' Cleveland 15. Obio REINKER Gerald E. G General Electric Co. Lamp Div 1133 E. 152nd St Cleveland 12 Ohio REISCHEL Frank W 2733 Mayflower Arcadia Dilectron Inc. Calif REISING Joseph A. M St. Joseph Lead Co. Zine Smelting Div Monaca Pa REISS Max S. E 85 Howell St Canandaigua N. Y. REMDE Harry F Jr. General Ceramics Corp. Keasbey N. J. REMINGTON Victor H. GI B. F. Drakenfeld & Co. Inc. Box 19 Washington Pa REMMEY G. Bickley RF Richard C. Remmey Son Co. Hedley St. & Delaware River Philadelphia 37. Pa REMMEY John G. R Richard C. Remmey Son Co. Hedley St. & Delaware River Philadelphia 37 Pa REMMEY RICHARD C. SON CO G. Bickley Remmey Hedley St. & Delaware River Philadelphia 37 Pa : REMPES Paul E Jr. BJI 5452 Mitchell Dr Page Manor Dayton 3. Ohio United States Air Force ENFREW J. Harvey S 31 Linden Park St. Roxbury 20 Mass Herman G. Protze _ RENOUF Leonard J. R 342 Church St. Youngstown N. Y. Titanium Alloy Mfg Div National Lead Co. VOL 35 No. 10 1956 RENSKERS Richard H. WD American Box 736 Kokomo Ind REPUBLIC STEEL CORP Burton Longwell 1423 Republic Bldg Cleveland 1. Ohio RESCHETZ Raymond R. 1615 W. Park Champaign Ill RESER Margie K. 977 Carlisie Ave. Columbus 11 Ohio American Ceramic Society REUNING Charles R. R 545 Boulevard Westfield N. J. National Refractories Co. REUNING George W. Jr. RI 279 E. Main St. Frostburg Md Big Savage Div Mexico Refractories Co. REUSCHE Frank L. W 60 Congressional Pky Livingston N. J. L. Reusche & Co. REUTER Raymond R National Aluminate Corp. 6216 W. 66 Pl Chicago 38. 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 Springside Dr. Lancaster Pa Radio Corp. of America RHODES Foster T. W Onondaga Pottery Co. Syracuse 4 N. Y. RHODES Fraser B. WFD 7134 Maple Ave Madeira Ohio Briggs Manufacturing Co. RHODES Ralph E Jr. M United Clay Mines Corp. 101 Oakland St Trenton 6 N. J. RHODES Ralth R. RFI 1729 Powell St. Norristown Pa E. J. Lavino & Co. RHODES William H. Box 827 Alfred Y. RICCI Edward Michaei RJI 817 Main St Dickson City Pa Harbison Refractories Co. RICE George A. W General Electric Co. Campbell Ave. Plant Rm 459 Schenectady N. Y. RICE Hal H. WI 451 Vinewood Ave Birmingham Mich General Motors Corp. RICE Murray J. B Box 155. Alfred N. Y. State University of New College of Ceramics RICE William H. G General Electric Co. York Glass Technology Laboratory 1133 E. 152nd St. Cleveland 10 Ohio RICH David C. G Pittsburgh Plate Glass Co. Creighton Pa RICHARD Giulio A. Via Cernuschi 1. Milano Italy Societa Ceramica Richard RICHARDS Robert W. S Richards Brick Co. 234 Springer Edwardsville Ill RICHARDS Thomas Z. R 80 Maple St. Greendale Sta West Boylston Mass Norton Co. RICHMAN Peter D. Box 746. Alfred N. Y. RICHMOND Joseph C. EFI 4822 Morgan Dr Chevy Chase 15 Md National Bureau of Standards RICHTER Charles J. G Box 275 Canfield Ohio RICK Clarence A. Ri Box 53. Columbiana Ohio Kaiser Aluminum & Chemical Corp. RICKER Richard W. El Aluminum Co. of America Alcoa Research Labs Box New Kensington Pa RICKEY Charles J. WE 3. F. Drakenfeld & Co. Inc. Washington Pa RICKEY J. H. Jr. K Ironton Fire Brick Co. Box 336. Ironton Chio RIDDLE Frank H. WFI 14 Upland Rd Colorado Springs Champion Spark Plug Co. Ceramic Div Colo RIDGEWAY Thomas J. Jr. R General Refractories Co. Morrisville Pa RIEGERT Richard P. I Box 995 Alfred N. Y. RIEPER Gerald 394 Pammel Ct Ames Iowa RIGBY James E. G Blue Ridge Glass Corp. Kingsport Tean RIGTERINK Merie D. BF Bell Telephone Labs Murray Hill N. J. RIIS Asgeir M Robeson Process Co. Box 960 Erie Pa RIKER Leon W. Jr. G 111 Rebecca St. Kittanning l'a Pittsburgh Plate Glass Co. RILEY Roger R. R ; 1774 Danesta Dr. Concord Calif Gladding McBean & Co. RINDONE Guy E. G Department of Ceramic Technology Pennsylvania State University University Park Pa RINGEN Robert E. M Paul O. Abbe Co 143 Center Ave. Little Fails N. J. RISPLER Z. W. Palestine Glass Works Phoenicia Ltd. Box 168 Haifa Israel RITLAND Harold N. G 14732 Eastgate Dr Bellevue Boeing Airplane Co. Wash RITT P. E. W 1325 S. George Mason Dr. Arlington Va Melpar Inc. RITTER Joseph S. G Adamston Flat Glass Div Rolland Glass Co. Box 631 Clarksburg W. Va RITTLER Hermann 12 N. Wayne St. Phelps Y. RITZ Joseph W. G Sylvania Electric Products 83-30 Kew Gardens Rd Inc. Kew Gardens L. I. Y. ROACH H. R American Radiator & Standard Sanitary Corp. 40 W. 40th St. New York 18 N. Y. ROBB Richard B. G 209 Vine St. Pittsburgh 18 United States Steel Corp. Pa ROBBINS Martin D. 86-15 Elmhurst Ave. Elmhurst Queens N. Y. ROBBINS Ross W. Jr. RJ 31 May St Worcester Mass Norton Co. ROBERSON Cletis L. G 350 Mouil St. Newark Ohio Corning Fiberglas Corp. ROBERTS Gerald J. S Mineral Weils Clay Products 205 N. W. Seventh St. Inc. Fort Worth Texas ROSTER 89 JBERTS John Taggart EFI 419 Park Blvd. Glen Ellyn III Crane Co. OBERTS John W. S 3204 Hawthorne Ave. Richmond 22 Va Southern Lightweight Aggregate Corp. OPERTS Mervin Francis E stwod Carpenter Ave. stwood Tuckahoe 7. N. de Lackner Helicopters Inc. BERTSON James A. R Westvaco Mineral Products Div Box 337. Newark Calif ROBERTSON john M. E 3008 Rosedale Blvd. Louisville 5. Ky American Radiator & Standard Sanitary Corp. ROBERTSON Leon F. G Brockway Glass Co. Inc. Brockway Pa ROBERTSON Randal K. S 906 University Tower Bldg Montreal Que Canada Laprairie Brick & Tile Inc. ROBERTSON R. Kenneth S 133 Thornton Ave. Mt. Royal Que Canada Laprairie Brick & Tile Inc. ROBESON PROCESS CO Asgeir Riis Box 960 Erie Pa ROBILLARD Harvey J. R Exolon Co. 1000 E. Niagara St. Tonawanda N. Y. ROBINETTE Oren Jr. Box 2284 Clemson College Clemson S. C. Sta ROBINSON CLAY PRODUCT CO W. E. Robinson Box 1070 65 W. State St. Akron 9. Ohio ROBINSON F. George S 500 S. Santa Fe Dr. Denver Robinson Brick & Tile Co. Colo ROBINSON Gilbert C. SF Box 91 Clemson S. C. Clemson College POBINSON Louis G. E Louis G. Robinson Labs Box 761. Cincinnati 1. Ohio ROBINSON Percy Burrili Diamond Clay Co. Ltd. Hartshill Trent England ROBINSON Phillip 23 Pymble Ave. Pymble N.S.W Australia Gallard & Robinson Pty Ltd. ROBINSON Richard E. RI Manville Zelienople Pa ROBINSON Richard R. SI 2232 Parkway Blvd. Alliance Ohio Alliance Clay Product Co. ROBINSON VENTILATING CO J. L. Henderson Jr. Zelienople Pa ROBINSON W. E. R Robinson Clay 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 Y. Olin Mathieson Chemical Corp. ROBSON James T. MFI Allied Engineering Division Ferro Corp. 4150 E. 56th St. Cleveland S. Obio 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 787 Alfred N. Y. VOL 35 No. 10 1956 ROCHOW W. F. RF Harbison Refractories Co. 1800 Farmers Bank Bldg - Pittsburgh 22 Pa ROCKFORD BRICK & TILE CO G. H. Galvin Jr. Rockford lowa ROCKWELL Dale L. Missouri School of Mines Jackling Gym Roila Mo. RODEFER Howard H. G Gleason Glass Co. Box 550 Bellaire Ohio RODEMOYER William E. Box 197. Alfred Y. RODMAN Clarence J. E Box 809 Alliance Ohio Alliance Ware Inc. RODRIGUEZ Alfonso F. G Vidriera Monterrey S. A. Apartado 162 Monterrey N. L. Mexico RODRIGUEZ A. R. BI 29 Pine St. Franklinville N. Hi Div Aerovox Corp. ROE Lawrence A. G 234 Sheridan Pl Lake Bluff Ill International Minerals & Chemical Corp. ROFF Robert W. M Bell Operations 433 Birch Pl Westfield N. J. ROFF W. Wallace M 14 Glenside Dr. West Orange N. J. Whittaker Clark & Daniels Inc. ROGATZ Alvin B ; Maida Development Co. 214 Academy St. Hampton Va ROGERS Edwin J. WI Scintilla Div Bendix Aviation Corp Sidney N. ROGERS Gregory L. R 9500 S. Norwalk Blvd. Los Nietos Calif Pacific Clay Products ROGERS Melvin F. GI 55 Goff St Corning N. Y. Corning Glass Works ROGERS Virzil L. 5 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 Emmalaan 11. Baarn Netherlands Anker Emaille 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. III R Empire Fire Brick Co. 219 Murray Fort Wayne Ind ROOT H. Dean WI Westinghouse Electric Corp. 70 Materials Engineering East Pittsburgh Pa Dept. ROOT Lawrence L. M Stanford Pottery Inc. 40 S. 15th St Sebring Ohio ROQUES Rodney A. W Coors Porcelain Co. Golden Colo ROSE Ralph RI E. J. Lavino & Co. Box 29 Norristown Pa ROSENDALE Robert H. W Dover Ceramic Co. Malvern Ohio ROSENTHAL E. K. W 234 Napoleon St. Playa Del Rey Calif Metlox Mfg Co. ROSENTHAL Ernst 246 Park West Marble Arch London W. 2. England Consultant 3789 Gold St. Apt S Los Alamos N. M. ROSENWINKEL George O. R North American Refractories 59 E. Van Buren Chicago 5. I. ROSICLARE LEAD & FLUORSPAR MINING CO J. Blecheisen Rosiciare ill ROSLUND J. A. R Globe Brick Co. Box 765 East Liverpool Ohio ROSS Donald W. RFI 5929A Oakhurst PL St. Louis 12 Mo. Consultant ROSS Howard II Ej R. R. 1. Kane Pa Ferro Corp. ROSS John A. G Corning Glass Works Corning N. Y. ROSS Stuart T. B 901 Brooklawn Rd Birmingham Mich Chrysler Corp. TACONY CRUCIBLE CO A. M. Johnson Robbins & Milnor Sts Philadelphia 35 Pa ROTH Harper D. M East River Rd Grand Island N. Y. Harper Electric Furnace Corp. ROTHERMEL Joseph J. G Corning Glass Works Research Lab Corning N. Y. ROUDABUSH Henry L. R General Refractories Co. 3201 Fruitland Ave. Los Angeles 58. Calif ROUDABUSH Ned W. R 311 Candlewood Rd Broomall General Refractories Co. Pa ; ROUP Roiland WFI Union Inc. 900 E. Keefe Ave. Milwaukee 1. Wisc ROWE Arnold E. E R. R Nebo N. ROWLAND Donald A. W 3 Maple St. Bath N. Y. Westinghouse Electric Corp. ROWLAND Richards A. B Exploration & Production Res Div Shell Development Co. 3737 Bellaire Blvd. Houston 25. Texas ROWLAND R. W. BF New Castle Refractories Co. New Castle Pa . ROWLANDS Robert R. WI Universal Corp. Box 300 Redlands Calif ROY H. N. Indian Ceramic Society Dept. of Ceramics Benares Hindu Univ Benares India ROY James W. B West St. Lenox Mass General Electric Co. ROY Rustum B Pennsylvania State University 221 Mineral Sciences Bldg University Park Pa ROYAL CHINA INC B. L. Miller Sebring Ohio ROYAL Herbert F. WF 845 Pilgrim Rd Birmingham Champion Spark Plug Co. Mich ROYAL COPENHAGEN PORCELAIN MANUFACTORY & THE FAIENCE MANUFACTORY ALUMINIA Chr Christensen Smallegade $ Copenhagen F. Denmark ROYER Rene Ingenieur E.C.P. 60. Rue D'Issy Vanves Seine France RUARK A. E. G Box 2041. University Ala University of Alabama ROSTER 91 RUBIO Diego P. 89 New York Cubao Quezon City Philippines RUDD Richard D. M Carborundum Co. 3335 W. 47th St. Chicago 9 Ill RUE Charles V. BI 143 Lindsay Ave. Tiffin Ohio - Sterling Grinding Wheel Co. RUECKEL Walter C. RF Koppers Co. Inc. Koppers Bldg Pittsburgh Pa RUGG Ormund I. G 13615 Meyers Rd Detroit 27 Mich Ford Motor Co. RUGH Kenneth A. R Garfield Refractories Co. Bolivar Pa RUH Edwin R 789 Fruithurst Dr. Pittsburgh 34 Pa Harbison Refractories Co. RUH Robert RJ 162 Diana Ln N. Fairborn Ohio Wright Air Development Center RUIZ Jorge Martin R Amerex Ingenieros S.A. Ixtaccihuatl 6 Insurgentes & Aguascalientes Mexico 11 D. F. RUIZ Robert A. R 114 W. Home St. Vandalia Mo. Walsh Refractories Corp. RULON Richard M. G Sylvania Electric Products Inc. 60 Boston St. Salem Mass RUSHMORE Murray Jr. M Moore & Munger 33 Rector St. New York 6 N. RUSO Felipe B. G Galiano 109 Habana Cuba General Glass Equipment Co. RUSOFF Basic Maple Samuel R Inc. Grove Fostoria Ohio RUSSELL Charles K. R 1 13 Mars St Mexico Mo. A. P. Green Fire Brick Co. RUSSELL Howard F. EI 3118 Woodworth Pl Pottowatomie Hills Hazelcrest Ill Ingersoil Products Div Warner Corp. RUSSELL Leslie A. G Hazel Glass Co. Washington Pa RUSSELL Lewis E. 20 Kirk Close Oxford Engiand U. K. Atomic Energy Authority RUSSELL Norman Keith RI 21 Longcorse Ln Paoli Pa Richard C. Remmey Son Co. RUSSELL Ralston Jr. XFI Dept. of Ceramic Engineering 126 Lord Hall Ohio State University Columbus 10. Ohio RUSSELL Robert G. R. R. 2. Granville Ohio Corning Fiberglas Corp. RUSTLESS IRON CO LTD H. Whitaker Lawkholme Ln Keighley Yorks England RYAN D. Edward Curran Engineering Ltd. Cardiff Wales RYAN Joseph D. G 3018 Middlesex Dr. Toledo 6 Ohio Libbey Glass Co. RYAN Larry D. Box E. Gig Harbor Wash RYCKMAN David A. Sr. W 40 S. Marion St. Bloomville Ohio PYDER 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 Geraid F. 81 National Bureau of Standards Div 9.1 Washington 25 D. C. RYSHKEWITCH Eugene R Kearfot Co. Inc. 142 Getty Ave. Clifton N. J. S SADA Patricio E Troqueles & Esmaltes S. A. Apartado Postal 371 Monterrey 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 Schenley Park Pittsburgh 13. Pa SAILER Edward BJ Radio Corp. of America RCA Bldg 5-2 Harrison N. J. SALEEBY Edward C. S J. C. Steele & Sons Inc. Box 951 Statesville N. SALINAS Mario G Montes Carpatos 625 Mexico 10. D. F. Mexico Vidriera Mexico S.A. SALISBURY Charles W. G R. R. , 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 Fruitland Ave. Los Angeles 58 Calif SAMPSON J. Leonard G Mahoning Glass Works General Electric Co. 403 N. Main St. Niles Ohio SAMPSON John W. M Lindberg Engineering Co. Box 813. East Longmeadow SAMSON A. William G B. F. Drakenfeld & Co. Inc. Mass Box 519 Washington Pa SAMUEL Donaid G. R E. J. Lavino & Co. Box 29. Norristown Pa SANBORN Paul H. W 2514-23rd St. Parkersburg W. Va SANDERS Clyde A. 3 American Colloid Co. Merchandise Mart Suite 813 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. Abrille 1112 Aviles Manila Philippines SANNER R. Dean R. R. 1. Argenta Ill SANT John W. W Universal Corp. Mt. Vernon & Orchard St. Camden N. J. SANTOMIERI S. Lewis Box 8. Botkins Ohio WI Botkins Engineering SARAKAUSKAS Raymond B National Carbon Co. Research Box 6116 Cleveland 1. Ohio SARGENT Edward C. R Zirconium Corp. of America Solon Ohio Labs SARRAF Edward M. R 20001 Laurel Ave. Rocky Rive 16. Ohio Harbison Refractories Co. SASAKI GLASS MFG CO LTD Seiichi Tabata Chome Yokokawa Sumida Tokyo Japan SASTRY B. R. Pennsylvania State University College of Mineral Industries University Park Pa SAUEREISEN C. Fred M Sauereisen Cements Co. Sharpsburg Sta Pittsburgh 15. Pa SAULS J. B. MI Funkhouser Co. 138 W. Washington St. Hagerstown Md SAUNDERS Alfred C. RI Eckhardt Rd Hamburg N. Y. Electro Refractories & Abrasives Corp. SAUNDERS Hollis S. E O. Hommel 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 Clay Products Co. SAVELL Fred H. M Western Talc Co. 1901 E. Slauson Ave. Los Angeles 58. Calif SAVIOLI Francesco Istituto Siderurgico Finsider Villa Brignole F. M. Perrone 24 Cornigliano Italia SAWAI Ikutaro Kyoto University Kyoto Japan SAWYER E. C. W Central Silica Co. 806 Market St. Zanesville Ohio SAXE Charles W. R 1 Wawecus Rd Worcester 5. Mass Norton Co. SAXONBURG George H. Saxonburg CERAMICS Aderhold Box Pa 100 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. Drakenfeld & Co. Inc Box 519 Washington Pa SCHABACKER H. Eric E Erie Ceramic Arts Co. 3120 W. 22nd St. Erie Pa SCHAEFER Cari F. W 327 Sheffield Ave. Flint A. C. Spark Plug Div General Motors Corp. Mich SCHAEFER Earl F. II 102 E. Chalmers Champaign Ill SCHAEFLE Max Thayngen Switzerland Tonwerke Thayngen A. G. SCHAFER C. B. G Libbey Glass Co. 1701 E. Broadway Toledo 5. Ohio ROSTER 93 SCHANER Burton E. BJ Westinghouse Electric Corp. Box 1468. Pittsburgh 30 Pa SCHATZKIN Harvey W Architectural Tiling Co. Inc. Jackson Sts Keyport N. J. SCHAUSS Edward P. G 1253 Eleanor Ave. Toledo 12. Ohio Illinois SCHELL Donald C. E 2227 S. Gunderson Berwyn Ill Armour Research Foundation SCHIEFFERLE James A. E 4501 Statton Rd Ashfield Acres Louisville 5 Ky General Electric Co. SCHIENE Quentin J. R 7614 Kingston Ave. Chicago 49 Ill United States Steel Corp. SCHIFFERLI Leo M. Jr. R 3001 Westmoor Dr Kokomo Ind Haynes Stellite Co. SCHLEGEL Roland F. Rua Inglaterra 283 Sao Paulo SCHLEHR W. Raymond GI Brockway Glass Co. Inc. Lapel Ind SCHLOEMER Hermann Brazil Mineralog Institution of Univ Tuebingen Bismarkstr SO Tuebingen Germany SCHLOTZHAUER Leon R. R R.R. 2. Painted Post Y. Corning Glass Works SCHMID Arthur W. G Arthur W. Schmid Co. 1414 Investment Bldg 239 Pittsburgh 22 Pa SCHMID Robert L. Jr. R 125 Croftley Rd Shetland Lutherville Md Fourth Hills Ave. Aluminum Co. of America SCHMIDT Beuther L. R Anchor Hocking Glass Corp. Lancaster Ohio SCHMIDT William G. S : Box 469 Altamont Y. General Electric Co. SCHMUNK Louis W 70 Dunedin Dr. Toronto 18 Ont Canada American Radiator & Standard Sanitary of Canada SCHNEIDER LaVoy H. E 5 Maple Ct Hamilton Ohio Ferro Corp. SCHNEIDER Matthew P. Jr. S 2548 Louisa St. Slidell La St. Joe Brick Works Inc. SCHNEIDER Samuel J. Jr. RJI 3336 Lancer Dr. West Hyattsville National Bureau of Standards SCHOELLKOPF Robert S. W Carborundum Co. of Puerto Rico Md Box 1147 Mayaguez Puerto Rico SCHOENINGER Irvin W. WI 250 N. Shoreland Ave. Milwaukee 17. Wisc Union Inc. SCHOENLAUB Robert A. R Harrop Ceramic Service Co. Box 5338. Shepard Sta Columbus 19. Ohio SCHOEPPEL Norman RI 10 Elm Tree Dr. Mexico Mo. A. P. Green Fire Brick Co. SCHOFIELD H. Zane 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 Matthey VOL 35 No. 10 1956 SCHOONOVER I. C. B National Bureau of Standards Washington 25. D. C. SCHOTSMAN J. Kruisstraat 31. Dieren Netherlands N. Enamel Works de Yssel SCHOTTLAND A. H. G Standard Ben Glass Co Butler Pa SCHOTTS Walter H. MFD 23 E. Southington Ave. Worthington Ohio Harrop Ceramic Service Co. SCHRADER David M. R 742 Rotch Ave. Massillon Republic Steel Corp. SCHRAMM Edward WF Onondaga Pottery Co. Syracuse 4 Y. Ohio SCHRECKENGOST Don DF 2617 St. Qair Ave. East Liverpool Ohio Homer Laughlin China Co. SCHRECKENGOST Viktor D 2265 Stillman Rd Cleveland Heights 18 Ohio Salem China Co. SCHREIBER Edward Box 948 Alfred N. Y. SCHRICKEL Herman H. Jr. G 178 E. Pulteney St. Corning N. Y. Corning 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 La Red Bank N. J. Carborundum Co. SCHROLL J. R. S Manufacturers Equipment Co. 218 Madeira Ave. Dayton 4. Ohio SCHUCK John F. Jr. WI R.R. I. Apple Creek Ohio Alite Div U. S. Stoneware Co. SCHUETZE Ervin W. R 23 Rock Springs Mexico Mo. A. P. Green Fire Brick Co. SCHUH Arthur E. R United States Pipe & Foundry Co. Burlington N. J. SCHULHOF Andres Lozadur Grandes Fabricas Argentinas de Ceramica S. A. Boulogne F.C.N.G.B. Buenos Aires Argentina SCHULTZ Donald G. S 3119 Woodworth Hazelcrest Ill Chicago Brick Co. SCHULTZ James B. G 1321 E. Robinson St. North Tonawanda N. Y. National Gypsum Co. SCHULTZ John Jr. EJ Battelle Memorial Institute 505 King Ave. Columbus 1. Ohio SCHULZE Robert H. X Advanced Vacuum Products Inc. 22 Liberty St. Stamford Conn SCHUMACHER William G. E 956 N. Glenwood Ave. Chicago 40 III National Cylinder Gas Co. SCHURECHT H. G. WFI Champion Spark Plug Co. 8525 Butler Ave. Detroit 11 Mich SCHURTZ D. D. GF Schurtz Co. 301-303 Lincoln Ave. Lancaster Ohio SCHWAB Leon B. R 214 E. Home St. Vandalia Mo. Harbison Refractories Co. SCHWARTZ Bernard BI 35 Dogwood Dr. R. R. 2 Downingtown Pa International Resistance Co. SCHWARTZ Jerome W. W Sascha Brastorf Products Inc. 11521 W. Olympic Blvd. Los Angeles 54 Calif SCHWARTZ M. A. BI WCRRL Aeronautical Research Lab W.A.D.C. Patterson AFB Ohio SCHWARTZWALDER Karl WFI A C Spark Plug Div General Motors Corp. Flint 2 Mich SCHWEICKHARDT William K. R Walsh Refractories Corp. 101 Ferry St. St. Louis 7 Mo. SCHWEITZER Howard V. M Schweitzer Equipment Co. 3764 Ridge Rd Cleveland 9 Ohio SCHWENKLER Edward P. 979 Grove St. Elmira Y. SCHWENKLER Theresa A. G 979 Grove St. Elmira Y. Corning Glass Works SCHWIETE Ernst Institut fur Gesteinshuttenkunde Mauerstrasse 5. Aachen SCOTT J. W. W Western Electric Co. Inc. Germany 7650 Hawthorne Station Chicago 23 II SCOTT Murray R. GFI Bausch & Lomb Optical Co. 635 St. Paul St. Rochester 2 Y. SCOTT Robert M. RI 4619 Druid Ln Dayton 9 Ohio Norton Co. SCOTT Roger F. GI 911 E. Main St. Millville N. J. Armstrong Cork Co. ' SCOTT Roland F. S Brazil Public Library Brazil Ind SCOTT W. J. W Western Electric Co. Inc. 2525 Shadeland Ave. Indianapolis 6. Ind SCOTT William D. 7707 Water St Olmstead Falls Ohic SEABRIGHT Clarence A. M . 2201 Wascana Ave. Lakewood 7. Ohio Harshaw Chemical Co. SEABRIGHT Edward C. E 171 Beuland Mt. Clemens Mich Philco Corp. Range SEANOR J. G. S 2300 W. Tuscarawas Div 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 soe Tt James Oakes & Co. Riddings Jacksdale Notts England Ltd. SEATON Max Y. RF Food Machinery & Chemical Corp. 161 E. 42nd St. New York 17 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 Square D Co. SECORD Robert N. W Godfrey L. Cabot Inc. Research & Development Dept. 38 Memorial Dr. Cambridge 42 Mass SEDENKA Anthony E 1086 Magnolia Dr Washington Pa B. F. Drakenfeld & Co. Inc. SEELEY E. L. W 800 Lotus Ave. Chester W. Va Harker Pottery Co. ROSTER 98 SEEMANN Wilhelm Pipersgatan 3 Stockholm Sweden SEGELER C. G. M American Gas Assn 420 Lexington Ave. New York 17 N. SEIDEL Joseph W 1255 E. Orange St Lancaster Pa Radio Corp. of America PEL Rober B. G Blue Ridge Glass Corp. Kingsport Tenn SEITZ Wolfram G Glass Containers Inc. 3601 Santa Fe Ave. Los Angeles 58 Calif SELLERS George A. RI . 315 E. Crescent Ave. Elmhurst Ill Plibrico Co. SELLERS John T. RI 52 Broadway Jackson Ohio Durex Refractories Co. SELSING Jorgen B 1316 Noble St. Barberton Ohio Ohio Brass Co. SEMMELMAN John O. WI Dentists Supply Co. of New York College & Grantley Ave. York Pa SEMPLE John Metal 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 Montreal Que Canada SENK Johann Vienna XVII Bldg Dornbacherstr 29 Austria Radio Fabrik IngeienPorzellan Fabrik SENTERS Walter S Washington Brick & Lime Co. Box 2198 Spokane Wash SENTRY SANITARY CORP Marvin E. Abrams Box 427 Mannington W. Va PHTON H. J. G Dominion Glass Co. Ltd. Chapple St. Hamilton Ont Canada SERVICE PORCELAIN ENAMEL INC Paul S. Cecil Brill & Christie Sts Newark 5 N. J. SERVIS Donald H. W Robertson Mfg Co. Box Trenton 5. N. J. 348 SESLER E. Clyde Jr. S 1529 Alexander Circle Pueblo Colo Summit Pressed Brick & Tile Co. SETCHEL Hayden Merritt G 105 Tenth St Streator Ill Illinois SEVERIN Harold Box 797 Alfred N. Y. SEVERSIKE Carroll L. W 23 Race St. Frenchtown N. J. Frenchtown Porcelain Co. SEYBERT Earl K. R Davison Chemical Co. Div W. R. Grace & 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 85 Chapel St Seneca Falls N. Y. Sylvania Electric Products Inc. SHAH Chunilal P. Bombay Potteries & Tiles Ltd. Pipe Rd Kurla Bombay 37 India ALEK Peter D. W 26 Lake St. Oak Park Ill SHAND Errol B. G 155 Reynolds Ave. Corning N. Y. Corning Giass Works Vol 35 No. 10 1956 SHAND Rodger L. E 230 Woodale Rd Oakville Ont Canada Ferro Enamels Canada Ltd. SHANDS Everett H. E 1930 Harlem Blvd. Rockford Ill O. Hommel Co. SHANER Herbert J. R Ramtite Co. 2563 W. 19th St. Chicago 3. Ili SHANKS Douglas Shanks & Co. Ltd. Victorian Pottery Barrhead Near Glasgow Scotland SHANNON Harry F. E United States Steel Corp. Applied Res Lab Monroeville Pa SHAPIRO Howard BI 1410 East Ave. New York 62 N. Y. Sylvania Electric Products Inc. SHARDLOW L. Russel BI Radio Corp. of America Harrison N. J. SHARP Donald E. GF Libbey Glass Co. 1701 E. Broadway Toledo 5 Ohio SHARP E. W. RI Pedro Ohio Lawrence Refractories Clay Co. SHARPE Edwin F. III 2255 Kennedy St. Philadelphia 37 Pa SHAVER Richard C. B 2 Hamilton St. Auburn Y. Cowles Chemical Co. SHAVER W. W. GF 130 E. Fourth St. Corning Y. Corning Glass Works SHAW Anthony E. S Natco Corp. 327 Fifth Pittsburgh 22 Pa Ave. SHAW Clarence F. WI R. R. 1 Trevor Wisc Pickard Inc. SHAW L. 1. XI Club DelMar Santa Monica Calif Consultant SHAW Myril C. MFI 563 Gates St. Philadelphia 28 Pa Asbestos Textile Institute SHAW Ronald H. S L. E. Shaw Ltd. Box 996 Halifax Nova Scotia SHAW Ronald 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 & Refractories 15 Muirhead Ave. Box 358 Inc. Trenton 3 N. J. SHEARER Wayne B. E 27 Fairview Rd Paoli Pa Foote Mineral Co. SHEAROUSE Lee A. W 326 Highland Ave. Wadsworth Ohio Brass Co. SHEEHAN Robert W. WJ Box 38 Saxonburg Pa Du Ceramics Co. Ohio SHEETS Herbert D. RI Battelle Memorial Institute 505 King Ave. Columbus , Ohio SHELDON John L. G 179 Dodge Ave. Corning N. Y. Corning Glass Works SHELDON R. S. E 2215 Wilson Ct St. Joseph Mich Whirlpool Corp. SHELL Haskiel R. B U. Bureau of Mines Electrotechnical Experiment Sta Norris Tenn SHELLEY C. B. RI General Refractories Co. 1520 Locust St. Philadelphia 2. Pa SHELTON Philo S. GJ 130 Burr St. Fairfield Conn SHENANDOAH SILICA CO INC Herreid D. Thropp 190 W. State St. Trenton N. J SHENANGO CHINA INC Geo B. Zahniser New Castle Pa SHEPHERD John F. EI Shepherd Chemical Co. 2803 Highland Ave. Norwood Cincinnati 12 Ohio SHERK Donald M 218 Dalton Dr. Bufalo 23. N. National Gypsum Co. SHERMER Herman F. G 740 Northampton Dr. Silver Spring Md United States Naval Ordnance SHERRILL Ernest M Westwood Ceramics Supply Co. 11250 W. Pico Blvd. Lab Los Angeles 64 Calif SHERRILL Robert R. EI 425 Canyon Dr. Glendale 6. Calif Bulwark Corp. SHERWOOD Robert F. WFI Ford Bacon & Davis United States Operations Mission A.P.O. 74. Box K. o P.M. San Francisco Calif SHEVLIN Thomas S. RI Engineering Experiment Ohio State University Columous 10. Ohio Station SHIELD Richard WJ 131 W. Harris Apt 7 San Angelo Texas SHIFF Tom R Villa Ridge Addition R. R. 2 Godfrey III Laclede Co Div H. K. Porter Co. SHIMADA Hachiro Shimada Glass Laboratory No. 2367. Chome Sanne Ota Tokyo Japan SHIMADA Kuro Toyo Glass Co. Ltd. No. 47 Chome Fukushimaku Osaka Japan SHIMER J. B. GI 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. SHIPE 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 7 - - Nateo Corp. 327 Fifth Ave. Pittsburgh 22. Pa SHIPPY Gordon D. E 2720 W. Chambers Milwaukee Wisc A. O. Smith Corp. SHIVELY R. R. GF 83 Woodland Dr. Pittsburgh 28 Pa Consultant SHIVELY Robert R. Jr. G 2416 Gulf Bldg Houston 2 Texas Olin Mathieson Chemical Corp. SHOEMAKER George W. S Arketex Ceramic Corp. 6 N. Walnut St. Brazil Ind SHOFFNER James E. Jr. G 118 Cherokee Rd Nashville Ford Motor Co. 5 Tenn SHOFSTALL N. F. M General Electric Co. 1811 LeMoyne Ave. Syracuse N. Y. ROSTER 97 SHONEBARGER F. J. G General Electric Co. Glass Technology Lab 1133 E. 152nd St. Cleveland Ohio SHONKWILER Francis P. R 2516 Milford Dr. Pittsburgh 34 Pa Harbison Refractories Co. OOK Thurston W. M 2569 McVey Blvd. W. Worthington Ohio Harrop Ceramic Service Co. SHOOK William B. 1 434 Chatham Rd Columbus 14 Ohio SHOOT Lyle E. WJ Box 491 State College Pa Erie Resistor Co. SHOPHER Sterling D. RI 1120 E. Jackson Mexico Mo. Mexico Refractories Co. SHORTER A. J. Bonnybridge Silica & Fireclay Co. Ltd. Bonnybridge Stirling Scotland SHORTER W. H. G Emhart Manufacturing Co. 333 Homestead Ave. Hartford 2 Conn SHREMP Raymond M. R 227 S. Clay St. Zelienople Pa Lava Refractories Co. SHUMAN Albert G Polarizing Instrument Co. Irvington New York N. Y. SICKER Richard 197 Park Ave. East Orange N. J. SIDDIQI Iftikhar A. 4238 12th N. E. Seattle 5 Wash SIDWELL John L. M H. Spinks Clay Co. Inc. 1000 First National Bank Bldg Cincinnati 2. Ohio SIEBACH Ralph E. 131 Rebecca St Kittanning Pa SIEBER Karl E. G Corning Glass Works Albion Mich SIEBERT Robert S Dennings Point Brick Works Inc. { Box 150. Beacon N. Y. EFERT A. GF Corning Fiberglas Corp. Newark Ohio SIEGWALD Clyde R. WI 4422 San Carlos Ave. Tampa Tiffany Tile Co. SIEKMANN John F. R Aluminum Co. of America Fla 20 N. Michigan Ave. Chicago 11 III SIEVERT Gu^fllio E. R 833 Oregon Ave. San Mateo Calif Gladding McBean & Co. SIGWART Harry J. G 732 Beechurst Ave. Morgantown W. Va Seneca Glass Co. SIKES James W. W Florida Tile Industries Inc. Box 451 608 Prospect St. Lakeland Fla SILK Kari Messrs Jury Holloware Ltd. Brierley Hill Star~s England SILVERMAN Alexander GFI University of Pittsburgh 2525 Cathedral of Learning Pittsburgh 13. Pa SILVERMAN William B. GFI Owens Technical Center 1700 N. Westwood Ave. Toledo I SIMAVILLA Juan M. Cristalerias Rigolleau S. A. Berazategui F.C.N.G.R. Buenos Aires Argentina SIMCOCK H. J. Cranford Lovatt Ave. Milehouse Newcastle Ohio Stafford England SIMISON A. L. GI Corning Fiberglas Corp. Toledo Ohio SIMMEN Fred G. W 964 Terrace Blvd. Trenton 8 N. J. Fairfacts Co. VOL 35 No. 10 1956 SIMMINGSKOLD Bo Glasinstitutet i Vaxjo Smedjegatan 3 Vaxjo Sweden SIMMONS E. E. Jr. M 455 S. Oakland Ave. Pasadena 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. 50th St. Cleveland S Ohio SIMON A. G. W 8530 Wentworth St. Sunland Calif Gladding McBean & Co. SIMONDS WORDEN WHITE CO F. R. Henry 1101 Negley Pl Dayton 7 Ohio SIMONS T. Mitchell Jr. WI 9186 E. Jaylee Dr. Temple City Calif B. F. Wagner & Co. SIMONSEN Eduardo C. Companhia Paulista de Minera^^o Caixa Postal 3008 Sao Paulo Brazil SIMONSEN Victor G. Ceramica Sao Caetano S. A. Caixa Postal 273. Sao Paulo Braz^... SIMONSON Robert B. Harvey Aluminum Co. 190th & Western Torrance Calif SIMPSON Frederick H. EJ 1521 W. 51st Seattle 7 Wash Boeing Airplane Co. SIMPSON Harold E. GFI State University of New York College of Ceramics Alfred Y. SIMPSON John A. S F. B. McFarren Ltd. Streetsville Ont Canada SIMPSON John D. Jr. S Statesville Brick Co. Box 471 Statesville N. SINCERE John F. Jr. EJ 3325 W. Henderson Ave. Chicago 41 Ill Industrial Publications Inc. SINCLAIR Robert R. RI 510 S. Osage Ave. Inglewood Missouri Refractories Co. Calif SINGER Felix F Keramos House 46. Castlemaine Ave. South Croydon Surrey Engiand Consultant SIQUEIRA Pedro M. Ceramica Sao Caetano S. A. Rua Boa Vista 84-6 Sao Paulo Brazil SIROVY George E Century Vitreous Enamel Co. 6641 S. Narragansett Ave. Chicago 38 Ill SISKA Albert H. EI 822 Ellis Ave. Ashland Ohio Ferro Corp. SISSONS Gordon H. S 320 First St. Medicine Hat Alta Canada Medicine Hat Brick & Tile Co. SIXT Lawrence F. W Cain St. East Liverpool Ohio Ltd. 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 Ill E. I. du Pont de Nemours & Co. SKURCENSKI Anton G H. I. Thompson Fiber Glass Co. 1733 Cordova St. Los Angeles 7 SKWARLO Edward G 706 S. Ioka Mount Prospect Vacuum Ceramics Inc. Calif III SLAUGHTER James A. G Pinsburgh Plate Glass Co. Box 15 Crystal City Mo. SLAUGHTER John 1. 3 Corning Glass Works Res & Development Div Corning N. Y. SLAYTER Games GF Corning Fiberglas Corp. Case Ave. Newark Ohio SLICK E. E. Jr. R Haws Refractories Co. 407 Main St. Johnstown Pa SLUSS Olen R. W Claiborne Towers Rm 1025 New Orleans La American SLYH John A. BF American Encaustic Lansdale Pa Tiling Co. Inc. SMALL Cariton F. Jr. RJ 9 Hawthorne Rd Cinnamon Hill Bridgeport Pa E. J. Lavino & Co. SMALLEY Howard F. E Pemco Corp. Research Div 255 Greenmount Ave. Baltimore 18 Md SMELT J. A. M. Bibliotheekcentrale N. V. Philips Gloeilampenfabrieken Eindhoven Holland SMITH Adrian F. G 86 E. Third St. Corning N. Y. Corning Glass Works SMITH Alden J. W R. R .. Carey Ohio Porcelain Products Co. SMITH Allen M. Box 70-105 Havelock N. C. SMITH A. O. CORP W. A. Deringer 3533 N. 27th St. Milwaukee , Wisc SMITH Arnold N. Pilkington's Tiles Ltd. Clifton junction Manchester England SMITH C. A. RFI Mexico Refractories Co. Better Refractories Bldg Mexico Mo. SMITH Dudley C. G Oakdale Dr. Millville N. J. Kimble Glass Div Illinois SMITH Earl R. G Pittsburgh Plate Glass Co. Works No. 25 Greensburg Pa SMITH Elis E. Jr. B 27 North St. East Aurora N. Y. Whittaker Clark & Daniels Inc. SMITH Gail G Corning Glass Works Corning N. Y. SMITH G. Sherwood Technology Department of Ceramic Technology Pennsylvania State University University Park Pa SMITH Harlan D. R Wellsville Fire Brick Wellsville Mo. Co. SMITH Harry W. W Old Town Rd Shelton American Lava Corp. Conn SMITH Herbert A. D Palm Fechteler & Co. Box 750 East Liverpool Ohio SMITH Hillard A. WI 28 Buchanan Rd Metuchen N. J. Rheem 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 & Supply Co. ROSTER 99 SMITH James United Fireclay Products Ltd. 140 W George St. Glasgow C. 2. Scotland SMITH James N Jr. D Arboriaen R. R. 5 New Bern New Bern High Schooli MITH J. Ernest X ' 233 Riveria Ave. Sarasota Fla N. Ceram Corp. SMITH John Jacob C 1404 Pacific Ave Brackenridge Pittsburgh Plate Glass Co. SMITH J. Ryan W Fairfacts 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. Box 8 Annex Sta Cincinnati 14. Ohio Pa SMITH Kenneth E. DFI American Art Clay Co. 4717 W. 16th St. Indianapolis 44 Ind SMITH Leland SI Box 294 Darlington Beaver Co. Pa Central Commercial Co. SMITH Peter W. W Gladding McBean & Co. 2901 Los Feliz Blvd. Los Angeles 39 Calif SMITH Ralph Ogden G 30 Chestnut St. Salem N. J. Gayner Glass Works SMITH Richard D. ( Ferro Corp Far East Div 130 Nathan Rd 205 Princess Bldg Kowloon Hong Kong SMITH Richard M. R 215 Seneca St. Corning Y. Corning Glass Works SMITH R. K. R 149 Reynolds Ave Corning N. Y. Corning Glass Works SMITH Ronald j Box 347. Alfred N. Y. SMITH Rowland D. G 12 Woodlawn Ave. Corning Corning Glass Works N. SMITH R. Thomas 206 W. Ninth St. Rolla Mo. SMITH Rufus J. Jr. S 306 S. Jefferson St. Goldsboro N. C. E. du Pont de Nemours & Co. SMITH Sidney L. 16 Munson St. Le Roy N. Y. SMITH & STONE LTD T. Wold Georgetown Ont Canada SMITH T. Sydney Brightwood Va SMITH Walter F. Jr. M United Clay Mines Corp. 101 Oakland St. Trento6n N. J. SMITH William E. G 5030 Janet Sylvania Ohio Illinois SMITH William L. M Harris Clay Co. Spruce Pine N. SMITH William R. 20 DeLancy Dr Geneva N. Y. SMOCK Alden W. G 41 Euclid Ave. Columbus North American Aviation 1. Ohio Inc. SMOKE Edward J. W 11 Edgewood Rd Metuchen 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 4123. Chattanooga American Lava Corp. Tenn VOL 35. No. 10 1956 SMYTH Haroid T. GI New Jersey Ceramic Research Station Rutgers University New Brunswick N. I. SNELL Richard Gi 1717 Calumet Ave. Toledo 7 Ohio LibbeFy ord Glass Co. SNIDER Carl A. Jr. G 4820 Girard Rd Pittsburgh 27 Pa Kaiser Aluminum & Chemical Sales Inc SNIDER Stuart M. S 325 Club Dr. Salisbury N. C. Taylor Clay Products Co. SNODDY John H. W Gladding McBean & Co. 2001 Los Feliz Blvd. Los Angeles 39. Calif SNOW L. James S Miminville Pa Alliance Clay Product Co. SNOW Roland B. RF United States Steel Corp. Applied Res Lab Monroeville Pa SNYDER Ernest B. RI Wheeling Steel Corp. Steubenville South Plant Steubenville Ohio SNYDER Nicholas H. W 531 Maple Ave. Trenton 3 N. J. Rutgers University SOBON Leon E. Box 787 Alfred N. SOCIETA ITALIANA REFRATTARI MARGHERA AZIONARIA Domenico Giacomelli Via Industrie 52 Casella Postale 308 Marghera Venice Italy SOCIETE FRANCAISE DE CERAMIQUE Y. Letort Service de Documentation 23 rue de Cronstadt Paris XV France SOCIETE PROFESSIONNELLE DES PRODUITS FRANCAIS DE TERRE CUITE M. Jacques Labansat 23 rue de Cronstadt Paris XV France SOCIETY OF GLASS TECHNOLOGY R. W. Douglas Thornton Hallam Gate Rd Shefeld 10. Engiand SOCONY MOBIL OIL CO W. B. Stevens 150 E. 42nd St New York 17. N. Y. SODERSTRUM William K. SI 374 Davis Rd Batavia Ill Structural Clay Products Research Foundation SOLOMON Earl RI 1657 Boston Ridge Rd Orchard Park N. Electro Refractories & Abrasives Corp. SOLVAY PROCESS DIV ALLIED CHEMICAL & DYE CORP Librarian Box 271 Syracuse 1 N. Y. SOMANY O. M. Hindusthan National Glass Mfg Co. Ltd. 2. Wellesley Pl Calcutta 1 SOMERS A. J. Borax Consolidated Ltd. Borax House Carlisle Pl London S.W.1 England India SOMMER Alfred W 89 Fairmount Ave. Kingston N. Y. Ferroxcube Co. of America SOMMERVILLE J. L. GI 283 Atlantic St. Bridgeton N. J. Illinois SONDLES Merrill C. W Paden City Pottery Co. Paden City W. Va SONENSHINE Lewis WJ 2141 Holland Ave. New York 64. Y. Mucon Inc. SONTZ Arthur RI 8054 S. Crandon Ave. Chicago 17 III United States Steel Corp. SOSMAN Rober B. Honorary BFI School of Ceramics Rutgers University New Brunswick N. J. SOUTH Furman Jr. R Crucible Refractories Co. First National Bank Bldg Pittsburgh 22. Pa SOUTHERN POTTERIES INC H. W. Kibler Box 279 Erwin Tenn SOWERS Robert M. G 8 Edgerton La Dearborn Mich Ford Motor Co. _ SOWMAN Harold G. R 1480 Grand Blvd. Schenectady N. Y. Knoils Atomic Power Lab General Electric Co. SOXMAN Edwin J. I Box 117. Alfred Y. SPAIN Richard W. G 2315 Drummond Rd Toledo Ohio Owens SPANGENBERG William C. MI 780 E. Fillmore Ave. East Aurora N. Y. Titanium Alloy Mfg National Lead Co. Div SPARKS Edgar W. W 406 Unaka Way Erwin Tenn Southern Potteries Inc. SPARROW Paul F. R 2447 Old Washington Rd Bridgeville Pa Norton Co. SPEIL Sidney GI Manville Research Manville N. J. Center SPENCE C. F. E 1005 Hartford St. Worthington Ohio Chicago Vitreous Corp. SPENCE Haroid I. Klabin Irmaos & Cia Av Suburbana 5472 Rio de Janeiro Brazil SPENCER Charles D. GF 2113 Taylor Rd Cleveland 12 Ohio Lamp Dept General Electric Co. SPENCER G. H. EFI 109 Witherspoon Rd Baltimore 12. Md Pemco Corp. SPENGLER H. H. G General Electric Co. Lamp Div Glass Technology Lab 1133 E. 152nd St Cleveland 10. Ohiu SPERRING Richard F. GJ 138 37th St. N. E. Cedar Rapids Iowa Pittsburgh Plate Glass Co. SPINKS H. .. CLAY CO INC R. B. Carothers Box 829 Paris Tenn SPINNER Sam G National Bureau of Washington D. C. Standards SPIRES Stephen T. RI North American Refractories Co. Mt. Union Pa SPIRKO Edward J. Box 827 Alfred N. Y. SPLANN Mary Theresa G Corning Glass Works Corning 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 Machlett Laboratories ROSTER 101 SPYCT Albert B. G Raytheon Manufacturing Co. 35 Chapel St. Newton Mass SQUARE D CO Ralph E. Hanna Molded Insulation Div Peru Ind SQUIER Arthur A. S 1616 Walnut St. Philadelphia 3 Pa Distributori AATLICHE PORZELLAN MANUFAKTUR BERLIN Gerhard Muller Hartmannstrasse 1-3 13a Oberfr U. S. Zone Germany STAATS Henry N. E Applied Research Inc. 135 S. LaSalle St Chicago 3. Ill STACH Otto R. R 90 W. Grimsby Rd Kenmore 23 N. Y. Carborundum Co. STADLER Lea E. G 1057 Plymouth St. Windsor Conn Hartford Co. Div Emhart Mfg Co. STAFFICKER Charles F. G 506 Grandview Ave. Vineland N. J. Kimble Glass Co. STAFFORD Ray M Southern Calif Minerals Co. 320 S. Mission Rd Los Angeles 33. Calif STAFFORD W. L. RFI Manville Research Center Box 159. Manville N. J. STAHMANN John A. B 4275 Verdugo Rd Los Angeles 55 Calif Gladding McBean & Co. STALEGO Charles J. G 227 N. Fifth St. Newark Ohio Corning Fiberglas Corp. STALTER Thomas L. I W. Norwich Ave Columbus , Ohio AMPS Murray R. W Canadian Porcelain Co. Ltd. Box 28. Hamilton Ont Canada STANDARD BRICK & TILE CORP Clifford A. Kleymeyer 123 N. W. Fourth St. Evansville 3. Ind STANDARD ULTRAMARINE & COLOR CO L. F. May Huntington 18 W. Va STANGL J. M. W Stangi Pottery Trenton 4. N. J. STANGL POTTERY J. M. Stangl _ Trenton 4 N. J. STANISLAW T. Staniey W Box 354 Centerport L. I. N. Y. Sylvania Electric Products Inc. STANLEY George V. E 2752 W. 90th Pl Evergreen Park 2 III Crane Co. STANLEY Robert J. G M. H. Detrick Co. 10600 Detroit 38 Mich Puritan Ave STANNARD Wilford T. D J. A. Dedouch Co. 608 Harrison St. Oak Park III STANSFIELD James R. D. S Streator Brick Co. Div Hydraulic Brick Co. Streator IlL STANWAY STANWAY Miss B. Elm Works Ltd Summerstown Tooting London S. W. 17 England STANWORTH John Edwin 74 Ashlawn Rd Rugby Warwick England British Thomson Co. STAPLETON Robert E. W 22 Chestnut St Franklinville Hi Q Div Aerovox Corp. Ltd. N. Y. VOL 35 No. 10 1956 STAPP John A. Jr. GI Union Carbide & Carbon Corp. Silicones Div E. Park Dr. & Woodward Ave. Tonawanda N. Y. STAR PORCELAIN CO Daniel W. Luks Muirhead Ave. Trenton 9 N. J. STARK CERAMICS INC J. H. Stewart Box 230 Canton 1 Ohio STARK R. E. W R. R. 5. Greensburg Pa Stupakoff Div Carborundum Co. STARK W. F. E Promat Division Poor & Co. 851 S. Market St. Waukegan Ill STARKEY Daryle D. M R. R. 1 Willard Ohio Starkey Engineering & Machinery Co. STARKEY Edward A. M 1068 Woodhill Rd Mansfeld Ohio Starkey Engineering & Machinery Co. STARKEY Elmer A. R 22397 Fairlawn Circle Apt 10 Fairview 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. STAVROLAKIS J. A. B 915 Leonard Dr. Rock Hill 19 Mo. Crucible Steel Co. STEARNS William E. E A. O. Smith Corp. 3533 N. 27th St Milwaukee Wisc STECK C. O. G F. J. Kress Box Co. One 28th St. Pittsburgh 22 Pa STEELE A. Preston Jr. S J. C. Steele & Sons Inc. Box 951. Statesville C. STEELE C. N. S J. C. Steele & Sons Inc. Box 951. Statesville N. C STEELE F. Montgomery S C. Steele & Sons Inc. Box 951. Statesville N. STEELE G. Allen R 101 MacGregor Dr. Trotwood Simonds Worden White Co. Ohio STEELE Harry L. Shorter & Son Ltd. Copeland St. Stoke Engiand STEELE Howard E. G Westinghouse Electric Corp. Hoult Rd Fairmont W. Va STEELE Hoyt P. E Benjamin Electric Mfg Co. Des Plaines Ill STEELE J. C. Jr. SF J. C. Steele & Sons Inc Statesville N. STEELE J. C. & SONS INC J. C. Steele Jr. Statesville N. STEELE Richard E. M Ram Inc. 1064 W. Fifth Ave. Columbus 8 Ohio STEELE William Perrin S Pine Hall Brick & Pipe Co. Winston N. C. STEFL Donald J. R Freeport Brick Co. Box 402 Freeport Pa STEILRoy C. G 3450 Garfield St. Denver S Calo Woodbury Chemical Co. STEIN Colin H. 7 Melville Terrace Stirling Scotland John G. Stein & Co. Ltd. STEIN Ronald C. Messrs John G Stein & Co. Ltd. Bonnybridge Scotland STEIN Sidney J. B International Resistance Co. 401 N. Broad St. Philadelphia 8 Pa STEINBOCK E. A. R Whip Corp. 411 W Avery St. Louisville 3 Ky STEINER Harry C. G General Electric Co. Power Tube Dept. Schenectady 8 N. STEINHOFF Fred L. WFI Brick & Clay Ceramic Industry 5 S. Wabash Chicago 3. III STEINROEDER Fritz Werke A. G. Lessingstr 16 Wiesbaden Germany STELLE John A. S Arketex Ceramic Corp. Brazil Ind STENQUIST Donald R. XJ Box 685 Redmond Wash Boeing Airplane Co. STEPHENS Dan E. R North State Pyrophyllite Co. Pomona N. C. STERLING CHINA CO William T. Pomeroy East Liverpool Obio GRINDING STERLING WHEEL CO W. R. Morgan Box 801 Tiffin Ohio STERLING Harry S. G Corning Glass Works Harrodsburg Ky STERN George B American Sinteel Corp. 320 Yonkers Ave. Yonkers 2 N. Y. STERRY J. Patrick 346 Macassar Dr. Pittsburgh 36. Pa STERRY W. Michael E 5124 Fifth N. E. Seattle 5 Wash Boeing Airplane Co. Corning STETSON STETSON Harold W. B R. R. 2. Painted Post N. Y. Glass Works STETSON William C. WI Box 44. Saxonburg Pa Saxonburg Ceramics STETTINIUS K. W Lapp Insulator Co. Inc. Le Roy STETTNER Donald H. EI 976 Center Ave. Lancaster Pa Y. Radio Corp. of America STEUBENVILLE POTTERY CO W. J. Mould Box 1030 Steubenville Ohio STEUERNAGLE J. H. G Brockway Glass Co. Inc. Wood St. Brockway Pa STEVENS E. G. 1420 N. Hermosa Ave. Hermosa Beach Calif STEVENS Frank J. WI 414 Prospect St. Nutley Isolantite Mfg Corp. STEVENS Joe R Murray Refractories Co. Murray Utah 10 N. J. Box 338 - STEVENS L. M. R 2907 Alabama St. La Crescenta Calif Gladding McBean & Co. STEVENS Robert P. RI Chicago Fire Brick Co. 1625 W. 104th Pl Chicago 43 III STEVENS W. B. W Socony Mobil Oil Co. 150 E. 42nd St New York 17 N. Y. STEVENSON James K. Jr. R. R. 2 Mundelein Ill Norton Co. RI STEVENSON Samuel W 1967 Grafton Rd Elyria Harshaw Chemical Co. Ohio STEVENTON Kenneth John Steventon & Sons Cledford Works Ltd. Middlewick Cheshire England ROSTER 103 STEWART Alex E National Lead Co. 111 Broadway New York 5 N. Y. STEWART Isaac G New York Testing Laboratories 47 West St. New York 6. Y. Inc. TEWART J. H. S ' Stark Ceramics Inc. Box 230 Canton 1 Ohio STEWART John A. GI 19 Locust Ave. Washington l'a B. F. Drakenfeld & Co. Inc. STEWART Malcolm M Commercial Minerais Co. 310 Irwin St. San Francisco 7 Calif STEWART Wilfred H. R United States Reduction Co. 4610 Meiville East Chicago STICKEL William C. R Aluminum Co. of America Ind 123 S. Broad St. Philadelphia Pa STIEF W. C. W Mt. Clemens Pottery Co. 158 S. Wilson Blvd. Mt. Clemens Mich STILL Henry P. Jr. 31 Stoneleigh Rd Worcester 6 Mass Norton Co. STILLWATER CLAY PRODUCTS CO J. P. Dufy Lock Drawer 32 Chrichsville Ohio STOCK Donald F. R 289 Maxwell Dr. Pittsburgh 36 Pa Harbison Refractories Co. STOCKDALE George F. G 49 Corning Blvd. Corning N. Y. Corning Glass Works STOCKSLAGER Theodore F. W Carborundum Co. 24800 Lakeland Blvd. Cleveland 32 Ohio STODDARD Stephen D. RI 2974 B Walnut Los Alamos N. M. Los Alamos Scientific Laboratory STOEN Roger C. SI Cannelton Sewer Pipe Co. Cannelton Ind STOHL STOHL Alfred A. W 374 North St. Sun Prairie Wisc Wisconsin Porcelain Co. STOHL L. A. W Wisconsin Porcelain Co. 120 Lincoin St. Sun Prairie Wisc STOIA Pfc John Z. WJI US 2373935 Btry 3663rd F.A. APO 331. San Francisco Calif Bn STOLLER Arthur I. WJ Radio Corp. of America Princeton N. J. STOLTE Norman H. EI 3974 Orchard Rd Cleveland Heights 21. Ohio Harshaw Chemical Co. STONE Benjamin W California Crafts 43340 N. Gratiot Mt. Clemens Mich STONE Conrad A. G 93 S. Remington Rd Bexley Columbus 9 Ohio Federal Glass Co. STONE C. P. Ferramic Industries Ltd. 25 Hydeway Welwyn Herts England STONE F. R. R Garden City - Canada Firebrick Co. Ltd. 4741 St. Ambroise St. Montreal Que Canada STONE Robert J. M John W. Higman Co. 24 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 Gay E. G 926 W. Water St Elmira N. Y. Corning Glass Works VOL 35 No. 10 1956 STOOKEY Stanley D. GF 145 Pritchard Ave. Corning N. Y. Corning Glass Works STOOPS Rober F. RI Metallurgical Products Dept. General Electric Co. Box 237 Roosevelt Park P. O. Detroit 32. Mich STORER John P. ( RJI 1 Beniamond Ave. Apt E. Toronto 13. Ont Canada Refractories Engineering & Supplies Ltd. STOTT A. E. Edward Johns & Co. Ltd. Armitage Sanitary Pottery New Rugeley Staford England STOUT John R. W 306 E. Murray St Macomb Ill Illinois Electric Porcelain Co. STOUT Joseph V. E 104 S. Fourth Ave. Highland Park N. J. Metal & 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 1088 Schenectady 8 N. Y. ST PIERRE Philippe D. S. B General Electric Co. Research Lab Metallurgy & Ceramics Div Box 1088. Schenectady N. Y. STRADLEY J. Grant I 1950 Korbel Ave. Lot 93 Columbus 11 Ohio STRADLEY Norman EI Minnesota Mining & Mfg Co. 2301 Hudson Rd St. Paul 6 Minn STRAIGHT Lee H. S Iowa Clay Products Co. Centerville lowa STRAIN R. E. E Alliance Ware Ltd. Box 50 Vancouver B. C. Canada STRATTON Warren 3711 15th N. E. Seattle 5. Wash STRATTON Mrs. W. B. D Pewabic Pottery 10125 Jefferson Detroit 14 Mich Ave. STREATOR BRICK CO DIV HYDRAULIC BRICK CO James R. D. Stans^-eid Streator Ill STRIMPLE J. H. B National Lead Co Titanium Box 58 South Amboy N. J. Div STRINGFELLOW Allen E. R 544 Woodland Ave. Haddonfield N. J. T Circuit Breaker Co. STROD Arvid J. EI Industrial Metals Improvement Co. The Park Bldg Pittsburgh 22 Pa STRONG Kenneth B. W 4624 Belmont Park Terrace Nashville 12 Tenn Titanium Alloy Mfg National Lead Co. Div STROTT Adolf J. R Kearfott Co. Inc. Ceramic Little Falls N. J. Dept. STROUD Harold L. M 2909 Bembridge Rd Royal Oak Champion Spark Plug Co. STROUP Philip T. R Aluminum Co. of America Box 772 New Kensington Pa Mich STROUPE Howard E. Jr. WI Wheeling Tile Co. Wheeling W. STRUCTURAL CLAY PRODUCTS INSTITUTE Harry C. Plummer 1520 18th St. N. W. Washington 6 D. C. Va STRUCTURAL CLAY PRODUCTS RESEARCH FOUNDATION Paul V. Johnson Geneva Ill STRUEBING Harold J. R 1215 Military Rd Buffalo 17 N. Y. Richard C. Remmey Son Co. STUART Deraid A. B Thurston Hall Cornell University Dept. of Engr Mat Ithaca Y. STUBBINS William J. W Rio Atoyac 25-14 Mexico 5 D. F. Consultant STUBBS John M. M National Gypsum Co. 3013 Boudinot Ave. Cincinnati 38 Ohio STUCKEY Jasper L. X 1911 Sunset Dr. Raleigh North Carolina Dept. of & Development STUNTZ Robert P. R Babcock & Wilcox Co. N. C. Conservation 105 S. LaSalle Chicago 3 III STUPAKOFF DIV CARBORUNDUM CO Semon H. Stupakoff Latrobe STUPAKOFF Semon H. W Stupako^- Div Carborundum Latrobe Pa STYER Charles A. R 11 Roxbury Rd Forest Hills Pittsburgh 21 Pa Vesuvius Crucible Co. STYHR Karsten H. Jr. 111 S. Fourth Ave. Pa Co. Highland Park N. J. SUBBARAO Eleswarapu C. Pennsylvania State University College of Mineral Industries Dept. of Ceramics University Park Pa SUBRAHMANYAM Sanga V. G H Arlene Village Millville N. J. T. C. Wheaton Glass Co. SUBRAMANIAN D. R. Burn & Co. Ltd. Refractory & Ceramic Group 12 Mission Row Calcutta 1. India SUCH CLAY CO M. M. McHose Jr. Box 47 Perth Amboy N. J. SULENS Henry A. M Ceramic Supply Co. Div Ferro Corp. Box 151. Crooksville Ohio SULLIVAN Eugene C. GF Corning Glass Works Corning N. Y. SULLIVAN John D. BFI Battelle Memorial Institute 505 King Ave. Columbus 1. Ohio SULLIVAN Joseph C. G 38 Fulton St. Corning N. Y. Corning Glass Works SULLIVAN Paul A. GI 624 Adeline Dr. Webster Y. Bausch & Lomb Optical Co. SUMMERS E. W. G 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 35 Pa Westinghouse Electric Corp. SUPAR Ceramic Institute Bandung Java Indonesia SUR ENAMEL & STAMPING WORKS M. M. Sur 24 Middle Calcutta 14 India LTD Rd Entally SUR M. M. Sur Enamel & Stamping Works Ltd. 24 Middle Rd Entally Calcutta 14 India SURFACE COMBUSTION Harvey C. Weller 2375 Toledo , Ohio CORP Dorr St. ROSTER 105 SURFLEET Harold Kaylene Laboratories Waterloo Rd London N. W. 2. England Kaylene Chemicals Ltd. SUTHERLAND Clark S Robinson Clay Produc Co. * W. State St. Akron 9. Ohio S ERLAND Frank R. RI ( Rainbow Dr. Kokomo Ind Haynes Stellite Co. SUTPHEN F. G. X 2505 Central Ave. Middletown Ohio SUTTON Paul M. G Corning Glass Works Corning N. Y. SUTTON Willard H. Pennsylvania State University Mineral Industries Bldg University Park Pa SUTTON W. J. RI 24 High St. Alfred Y. State University of New York College of Ceramics SVEC J. J. WI 3440 S. Euclid Ave. Berwyn Ill Industrial Publications Inc. SWAIN Richard S. 509 Kibler Ave. Newark Ohio SWALM Phaon H. W Box 178. Kingston Ont Canada Frontenac Floor & 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 & Glass Co. Box 90. Hayward Calif SWEITZER Mark W 747 N. Mentor Pasadena Calif S. Paul Ward Inc. SWENTZEL John P. RD 8960 Hennepin Ave. Niagara Falls N. Carborundum Co. CEO Benjamin J. EFI Ferro Corp. 4150 E. 56th St. Cleveland S Ohio SWICA Joseph j Box 165. Alfred N. SWICKER Victor C. GF 907 Floral Dr Whittier Calif Consultant SWIFT Howard R. GF Owens Glass Co. 1701 E. Broadway Toledo 5. Ohio SWIGART Joseph J. M 3014 Middletown Rd Pittsburgh 4. Pa Vitro Rare Metals Co. SWINDELL CORP Philip Dressler Box 1888 Pittsburgh 30. Pa SWINEHART David C. 808 E. 42nd Apt D. Seattle 5 Wash SWINNERTON Bertram B. W 157 Hampden Park Tiffin Ohio American Radiator & Standard Sanitary Mfg Corp. SWINNERTON George R. M 35 E. State St Alliance Ohio Moore & Munger SYLVANIA ELECTRIC PRODUCTS INC B. S. Ellefson 1740 Broadway New York 19 N. Y. SYLVESTER George R. MI Sylvester & 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 BATA Seiichi . ' Sasaki Glass Mfg Co. Ltd. Chome Yokokawa Bashi Sumida Tokyo Japan TAILBY Roland V. WI Styloa Corp. Milford Mass VOL 35 No. 10 1956 TAJKOWSKI Edward G. G General Electric Co. Silicone Products Dept. Waterford N. TAKAHASHI Kakuichiro F Nippon Glass Co. Ltd. 1. Ginza chome Chuo Tokyo Japan TALLAN Norman M. 95 E. 12 Ave. Columbus Ohio TALWALKAR T. W. 8 Bagmati Rd Jamshedpur India Tata Iron & Steel Co. Ltd. TANBERG Ragnar Drammens Glassverk Drammen Norway TAO Yung G 501 S. Gar^-eldSt. Burlington Iowa Sylvania Electric Products Inc. TARNACKI Walter J. WI 8417 Loch Raven Blvd. Towson 4 Md Friez Instrument Div Bendix Aviation Corp. TARNOPOL Milton S. B 943 Ninth Ave. Brackenridge Pa Pittsburgh Plate Glass Co. TASHIRO Megumi Institute for Chemical Research Kyoto University Yoshidahon machi Sakyoku Kyoto Japan TATE Frank E. WI 310 Tenth St. Lincoln III Stetson China Co. TATEM William A. RJ 7 Willow Ln Carle Place Y. U. Navy TATNALL R. Francis Box 827 Alfred N. Y. TAUBER Charles B. B 921 Signal Rd Signal Mountain American Lava Corp. TAUBER John A. RI 3190 Mayflower Rd Plymouth Meeting Pa E. J. Lavino & Co. TAYLER John B. W Louisville Pottery Co. Inc. 228 E. Bloom Louisville 8. Ky Tenn TAYLOR Fran D Gay Fad Studios Lancaster TAYLOR Hiram D. B Chio Shreve Manufacturing Co Shreve Ohio TAYLOR Howard U. WI Union Inc Ceramic Lab 900 E. Keefe Ave. Milwaukee 12 Wisc 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 & Mfg Co. Fluorochemicals Div 900 Fauquier Ave. St. Paul 6. Minn TAYLOR Robert B. S Structural Clay Products Research Foundation Geneva Ill TAYLOR SMITH & TAYLOR CO Phil Wright Chester W. Va TAYLOR Thomas J. R 816 Sterner Mill Rd Trevose R. C. Remmey Son Co. Pa TAYLOR William C. GF Corning Glass Works Corning N. Y. TEAGUE A. D. R Babcock & Wilcox Co. Box 923 Augusta Ga TEAGUE BRICK & TILE CO L. R. Boyd Jr. Box 329 Teague Texas TEAGUE Jo M. Jr. GI Illinois Technical Center 1700 N. Westwood Ave. Toledo 7 Ohio TEAGUE William T. 209 McCord St. Marietta Ga TEETER John N. E 677 Wilmo Rd Deerficid ill Thomas C. Thompson Co. TEETOR Paul SF 72 E. Main St. Somerville N. J. Central Commercial Co. TEFFT Gleen C. S Claycraft Co. Shawnee Ohio TEFFT Phillip W. SFI Claycraft Co. Box 856 Columbus 16. Ob TEFFT Willard H. S Claycraft Co. Upper Sandusky Ohio TEGELLABORATORIET Brick Laboratory Christer Drottning Kristinas vag 45 Stockholm O Sweden TEICHMANN Henry F. G Henry F. Teichmann Inc. Box 1705. Pittsburgh 30. Pa TEICHMANN Henry F. Jr. G 645 Elderwood Dr. R. R. 2 Enberg Bridgeville Pa Henry F. Teichmann Inc. TEICHMANN Newton N. G 316 Hardy Dr. Bridgeville Pa Henry F. Teichmann Inc. TENNERY Lt Victor J. BJ Signal Corps Eng Labs Chemical Physics Branch Ferroelectrics Unit Ft Monmouth N. J. TERMAN Mark J. R Babcock & Wucox Co. 161 E. 42nd St. New York 17. Y. TERRY Griffin E. E 602 E. Willow Wheaton Ill Hotpoint Co. . TERRY Jack H. E 4321 Fairfield Ave. Fort Wayne Ind General Electric Co. TEXAS BRICK CO W. T. Gill Jr. Box 510. Brownwood Texas TEXAS VITRIFIED PIPE CO Paul E. Hoey Box 117 Mineral Weils Texas THATCHER GLASS MFG CO INC Roy S. Arrandale 1901 Grand Central Ave. Elmira Y. THEOBALD Erwin F. S 1516-18th St. N. W. Canton 3 Ohio Metropolitan Brick Inc. THEWS Karl B. M 83-09 Taibot St. Kew Gardens L. I. Y. Titanium Alloy Mfg Div National Lead Co. THIELKE Norman R. 3 National Carbon Co. Research Box 6116 Cleveland 1. Ohio Labs THIEMANN John W. WI Alite Corp. Box 119 Orrville Ohio THIEMECKE Harry W. WFI Homer Laughlin China Co. Newell W. Va THIESS L. E. WF Insulator Dept General Electric Co. st Baltimore 30 Md THOMAS Charles A. G. E. J. & J. Pearson Ltd. Firebrick Works Stourbridge England THOMAS Charles W. Honorary Clifton House Old Swinford Stourbridge England E. J. & J. Pearson Firebrick Works Ltd. THOMAS David W. WI Tycer Pottery Inc. Armstrong St. Roseville Ohio THOMAS Everett A. R 2703 Shaffer Ave. Cincinnati 11 Ohio Chas Taylor Sons Co. THOMAS George L. G 11 Ideal Ave. R.R. , Cheswick Pa Pittsburgh Plate Glass Co. THOMAS H. H. M 35 Highboy Court Red Bank N. J. Pemco Corp. ROSTER 107 THOMAS Richard V. Ellendale Rd Chagrin Falls Ohio THOMAS Rober H. B 238 Arlington Rd Newton Falls Falls Welding & Mfg Co. Ohio THOMASON James F. 1 , 562 Roosevelt Rd Kohler OMPSON A. Paul RF Research Laboratories Wisc Picher Co. Joplin Mo. THOMPSON Charles W. R 216 Dell St Johnstown Pa Bethlehem Steel Co. THOMPSON Clyde L. RFI 4922 New Plymouth Rd Pittsburgh 27 Pa Harbison 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 . Borax & Chemicals Ltd. 229 High Holborn 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 San Juan Puerto Rico 4272 THOMPSON Noel M. R 721 Shady Lane Pirsburg 34 Pa Lumnite Div Universal Atlas Cement Co. THOMPSON Thomas E. E Box 252 Williams Bay Wisc Thomas C. Thompson Co. THOMPSON Lt. William M. Jr. BJI WADC Area 3 Box 8308 Patterson AFB Dayton Ohio HOMSON Homer G. R 12101 W. Howard St. Milwaukee 14 Wisc Allen Bradley Co. THOMSON James K. W 2 McMaster Pl Bath Y. Westinghouse Electric Corp. THOR Murner E. RI 318 Parkhurst Blvd. Buffalo 23 N. Y. Norton Co. THORNE James E. WJ Case Manufacturing Corp. Robinson Ill THORNGATE Bruce W. W Royal Tile Manufacturing Sylvania Sta Box 7292 Fort Worth 11 Texas Co. THORNTON George A. M Ottawa Silica Co. Box 437 Ottawa Ill THORNTON Paul E. WI 1708 La Taza Dr La Canada Calif Ferro Corp. THRASHER William R. D Model Ceramics Inc. 772 N. Main Akron 10. Ohio THROPP Herreid D. M Shenandoah Silica Co. Inc. 190 W. State St. Trenton 8. N. J. THUENER Everett E. W R. R. 5. Old State Rd Schenectady 6 N. Y. General Electric Co. THUNHORST Helen M. 2313 Saratoga Ave. Cleveland Ohio THURNAUER Hans BFI Minnesota Mining & Mfg Co. Central Research Inorganic Section Hudson Rd & East Ave. St. Paul 6 Minn THUT Walter W. A. G. Hunziker & Cie Lagerstrasse 1 Zurich Switzerland VOL 35 No. 10 1956 TIBBALS Harvey L. MI 542 Santa Barbara Rd Berkeley 7 Calif Minneapolis TICE Henry B. Jr. W Zenith Radio Corp. 1500 N. Kostner Ave. Regulator Co. Chicago 51 III TICKLE William H. F. Brown Stacks Caldy Nr West Kirby Cheshire England Manchester College of Technology TIDD Elbert D. W Bell Telephone Labs Inc. Rm 266 Whippany N. J. TIEDE Ralph L. G 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 Winburn Tile Mfg Co. 1709 E. Ninth St. Little Rock TILLOTSON Clifford R Tillotson Refractories Co. Ark Box 398 Corona Calif TILLOTSON E. Ward GF 505 S. Murtland Ave. Pittsburgh 8 Pa Mellon Institute TIMBERLAKE John J. G Teichmann 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 Y. TITANIUM ALLOY MFG DIV NATIONAL LEAD CO W. J. Baldwin Box C Bridge Station Niagara Falls Y. TITUS Heary B. R North American Refractories Co. 50 Church St. New York 7 Y. TOBERG John E Shepherd Chemical Co. 2803 Highland Ave. Cincinnati 12 Ohio TOBEY Henry M. S Dow Chemical Co. Midland Mich TOCKER Edwin 3917 Pinkney Rd Baltimore 15 Md TODD Henry W Dee Lane Queenston Canadian Ohio Brass Ont Co. Canada TOEPFER George W Canadian Potteries Ltd. 360 Blvd. Seminaire St. Johns Que Canada TOLER Herbert R. E R. R. 2. Box 544 West Chicago Ill Indiana Steel Prod Co. TOLLY Donald B. EJ 122 Hudson La Fern General Electric Co. Creek Ky TOM Elgin M. G 4208 Mariaine Dr. Toledo 6 Ohio Kimble Glass Co. TOMASEK A. J. R Walsh Refractories Corp. 101 Ferry St. St. Louis 7 Mo. TOMKINS David E. M R. R. 5 Eastbrook Rd New Castle Pa Shenango China Inc. TOOL Arthur Q. GF 7325 Carroll Ave. Takoma Park 12. Md TOOLEY F. V. GF 611 W. Oregon Urbana Ill University of Illinois TOOMEY James E. R Kaiser Aluminum & Chemical Corp. 1625 Eye St. N. W. Room 915 Washington 6 D. C. TOPPING John R United States Steel Corp. 325 William Penn Pl Pittsburgh 30. Pa TORGAL K. G. 1/108 Mannarpur^ m Tiruchirapalli S. India Jamal Mohamed Collegei 410 Front St. Berea Obio McGean Chemical Co. TOROK Julius J. G 3344 Gallatin Rd Toledo ^Ohio Illinois TOSTEVIN Edgar R. Jr. WI 2044 Westfield Ter Bethlehem Pa Western Electric Co. TOULOUSE Julian H. GFI 1817 Potomac Dr. Toledo 7 Ohio Owens 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. TREDENNICK William T. RI 14 Brookfield Rd Drexel Hill Pa Refractory Specialties Co. TREFFNER Walter S. R 440 W. Maple Rd Linthicum Heights Md General Refractories Co. TREISCHEL C. C. WFI R. T. Vanderbilt Co. 230 Park New York 17 N. Y. Ave. TREITLER Theodore L. G Corning Glass Works Corning N. Y. TRENTON POTTERIES CO Plants 1 & 2. 309 N. Clinton Ave. Box 141. Trenton N. J. TREPTOW Arnold W. E Bell Telephone Labs Murray Hill N. J. TREVOR John F. Moira Rd Woodville Nr Burton England John Knowles & Co. L TRIBE Harold G. Electricity Meter & Allied Ind Ltd. Box 4. Waterion 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. EI 3605 Winchester Rd Louisville 7 Ky General Electric Co. TROMPETER Bernard J. M Champion Spark Plug Co. 8525 Butler Ave. Detroit 11 Mich TROST Frank W. R Chas Taylor Sons Co. 5 Haddon Ave. Haddonfield 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 Illinois 1700 N. Westwood Ave. Toledo 7 Ohio TROY Walter J. E 888 Chili Ave. Rochester N. Y. Pfaudler Co. TRUESDALE Richard S. ) Box 275. Alfred N. Y. TRUMPLER Alfred L. M Harper Electric Furnace Corp. 39 River St. Buffalo 2 N. Y. ROSTER 109 TSE cheng WI 138 Main St Apt B Fairhaven Mass ( Aerovox Corp. TSUKADA Kenichi Box 257 Alfred Y. TUCKER Donald J. MT 2114 Winthrop Rd Huntingdon Valley Pa ( Precision Grinding Wheel Co. TUCKER Edward F. R Stebbins Engineering & Mfg Co. 363 Eastern Blvd. Watertown N. TUCKER Harvey C. WI Ferro Corp. 415E0. 56th St. Cleveland 5. Ohio TUCKER Roland E. WI Trenton Potteries Co. 309 N. Clinton Ave. Trenton N. J. TUNG Chi Fang E 1958 Nokomis Ave. St. Paul 6. Minn Minnesota Mining & Mfg Co. TURBETT Paul E. MI R. R. 1 Dresden Hwy Paris Tenn H. C. Spinks Clay Co. Inc. TURCK Raymond L. M . 48 Short St. Tiffin Ohio t Sterling Grinding Wheel Co. TURISSINI Robert GI Corning Glass Works Fallbrook Corning Y. TURK Richard H. EFI Perco Corp. 5601 Eastern Ave. Baltimore 24. Md Plant TURLEY Charles L. G B. F. Drakenfeld & Co. Inc. Box 19 Washington Pa TURNBAUGH Jerry E. 5310 33rd Ave. .. Seattle 8 Wash TURNBULL Edward D. W 500 Penn Ave. Scranton 3 Pa Euston Lead Co. Div Glidden Co. TURNBULL John C. G Radio Corp. of America Victor Div Lancaster Pa TURNER A. A. R : 153 Lake Ave. Metuchen N. J. Carborundum Co. TURNER Donaid Messrs Lodge Plugs Ltd. Rugby England TURNER Mort D. B Calle 12 de Octubre +14 Hato Rey Puerto Rico TURNER P. Jr. RI 46 Imbler Dr Cincinnati 18 Ohio General Electric Co. TURNER Robert C. SI One Jefferson Ave. Rockville Centre Y. 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 & N. W. Highway Des Plaines Ill TUTTLE Milton A. R Box 981 Alfred N. Y. State University of New College of Ceramics York TWELLS Robert WFI Electric Auto Co. Spark Plug Div Box 231 Fostoria Ohio TWELLS Robert G. GI 528 Isabella Ave. Lock 4 Pa Corning Glass Works TWYFORDS LTD Cliffe Vale Potteries Trent England TYGART VALLEY E. A. Hinkins Washington Pa GLASS CO Box 503 TYLER W. S. CO C. E. Jenks 3615 Superior Ave. N. E. Cleveland 14. Ohio VOL 35 No. 10 1956 TYRRELL Miles E. R Box 412 Norris Tenn U. Bureau of Mines TYSINGER Ted W. S R. R. 2. Thomasville C. Cunningham Brick Co. U UELTZ H. F. G. B 39 West St. Worcester Mass Norton Co. UHRMANN Carl J. GF Overlook C. Bellaire Ohio Arthur W. Schmid Co. Inc. ULEMAN Turrell G 109 Virginia Ave. Aspinwall Pa Pittsburgh Plate Glass Co. ULRICH Robert J. E American Radiator & Standard Sanitary Corp. 1541 S. Seventh St. Louisville 8. Ky UNION FRANCAISE DES PRODUITS REFRACTAIRES Louise Halm 15. Rue de Milan Paris 9e France UNITED CLAY MINES CORP K. E. Ward 101 Oakland St. Trenton 6. N. J. UNITED STATES GYPSUM CO Robert Hamilton 300 W. Adams St Chicago 6 Ill UNITED STATES STEEL CORP W. S. Debenham 25 William Penn Pl Pittsburgh 30. Pa UNIVERSAL CLAY PRODUCTS CO C. A. Bloor Sandusky Ohio UNIVERSAL DENTAL CO Joseph Kohn 48th & Brown Sts Philadelphia 39. Pa UNIVERSAL POTTERIES INC Harry E. Davis Cambridge Ohio UNIVERSAL CORP A. L. Johnson W Keith McAfee Lab Box 1268 Mahoningtown Pa UNIVERSAL CORP H. P. Wangelin 3305 W. Forest Home Ave. Milwaukee 15 Wisc UNUM Robert F. WI 311 Wilmington Ave. New Castle Pa Universal Corp. URBAN Stephen F. B 268 Hartford Ave Kenmore 23. N. Y. Titanium Alloy Div National Lead Co. UTAH FIRE CLAY CO C. H. Myers Box 127 Salt Lake City 10 Utah UTZ Donald R Kearfott Co. Inc. 142 Getty Ave. Clifton N. J. Vv VAIL Milford R. 4014 Spruce St Philadelphia 4. Pa VALDES Thomas H. W 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 3 Del Monte Properties Co. 620 Market St San Francisco 4 Calif VALYI Ilsabe E. B 20 S. Broadway Yonkers 1. N. Y. A. R. D. Corp. VAN AKEN Robert C. W Sperry Gyroscope Co. Div Sperry Corp. 1P39 1P39 Great Neck N. Y. VAN ALSTEN Roy L. RI 9168 Sarasota Detroit 39. Mich Ford Motor Co. VANCE Clarence E. 165 Milky Way Clemson C. VAN CLEAVE A. A. R 3100 McGroarty St. Sunland Calif VAN COTT Harrison C. B R.R. , Horseheads Y. Corning Glass Works VAN DER BECK Roland BI Research & Development Carborundum Co. Niagara Falls N. Y. VANDERBILT R. T. CO Ira E. Sproat 230 Park Ave. New York 17 N. VANDERMADE Richard J. R 489 Willow Dr. Pittsburgh 16 Pa Carborundum Co. VAN DRESER Merton L. G Corning Fiberglas Corp. Box 326 Kansas City Kans VAN DYKE Orien W. B Magnet Cove Barium Corp. Box 5504 Houston 5. Texas VAN GELDEREN L. P. N. V. Ramic Union Enschede Holland VAN GORDON Donald V. M Metal & Thermit Corp. Box 471 Rahway N. J. VAN HORN Harry T. M 741 Floral Park Rd Franklin Square N. Y. Socony Mobil Oil Co. Inc. VAN HOUTEN Louis A. Fabricacion 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. Y. VANNI Ralph J. 1713 Warren Ave. Seattle 9 Wash VAN NIEUWENBURG C. J. Laboratorium voor Analytische Scheikunde Microanalyse de Vries van Heystplein 2 Delft Netherlands VAN SCHOICK Emily C. XF State University of New York College of Ceramics at Alfred Alfred N. Univ VAN SCHOIK Dickson M. RI 5950 S. Lake Shore Dr. R. R. 2 Box 09 Whitehall Mich Misco Precision Casting Co. VAN TASSEL R. H. E 27 Green Tree Rd Kohler Wisc Kohler Co. VAN VLACK Lawrence H. BI Dept. of Chem & Metal Engineering University of Michigan Ann Arbor Mich VAN WASSENHOVE Pierre N. V. De Sphinx Maastricht Holland VAN WIGGEREN Charles G. Simonds Abrasive Co. WI Tacony & Fraley Sts Philadelphia 37 Pa ' VAN ZEE Arthur F. 3430 Inverness Ave. Toledo 7 Ohio Owens VARSHNEI Purshottam D. U. P. Glass Works Ltd. Bahjoi Dt Moradabad U. P. India VASILOS Thomas B 424 W. Fourth St. Elmira N. Y. Corning Glass Works VAUGHAN T. Carter SI 1522 Bedford Rd Charleston W. Va West Virginia Brick Co. VAUGHAN W. Harry XFI Cherokee Brick & Tile Co. Box 58 Waterville Rd Macon Ga VEALE Jack H. R 406 Reedwood Dr. Joliet Ill Illinois Clay Products Co. VEIGA Roberto A. Ceramica Santa Helena Ltda Rua 15 De Novembro 38 Paranagua Parana Brazil ROSTER 111 VENABLE Charles R. Jr. RI 1660 S. Oak Bartlesville Okla Phillips Petroleum Co. VENABLE Joe G. G Chattanooga Glass Co. Chattanooga 10. Tenn ERBA Richard J. M Schweitzer Equipment Co. 3764 Ridge Ru Cleveland 9. Ohio VESUVIUS CRUCIBLE CO Francis L. Arensberg Box 8275 Swissvale Pittsburgh 18 Pa VICKERS A. Eric J. Wynnstay Millfield Whickham Rd Newcastle England Thermal Syndicate Ltd. VICTOR INSULATORS DIV T CIRCUIT BREAKER CO H. Failmezger Maple Ave. Victor N. VIDANOFF Richard B. GJ 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. Rodriguez Apartado 162 Monterrey N. L. Mexico ; VIGER Burnett C. G 130 E. Third St. Corning N. Y. Corning Glass Works VILENSKY Michel B. R 1515 27th Ave. San Francisco 22 Calif Ampex Corp. VINAL Francis E. B Radio Corp. of America 64 A St Needham Heights 94 Mass VINCENT CLAY PRODUCTS CO O. J. Whittemore 615-19 State Bank Bldg Fort Dodge Iowa VINCENT George L. WI R. R. 2. Box 79 Robinson III Case Manufacturing Corp. HINTHER E. Heikel Porcelainfabriken Norden Valby Langgade 95 Copenhagen Denmark VISCONTI di MODRONE Raimondo Soc Ceramica Richard Ginori 1 via Bigli Milan Italy VITCLO Sylvester A. RI Gen. Del Long Valley N. J. ( Austenal Inc. VITREOUS STEEL PRODUCTS CO Edgar H. Weil Box 3991 Cleveland 20. Ohio VITRO MANUFACTURING CO Joseph Boyce 60 Greenway Dr. Pittsburgh 4 Pa VODICKA Albert L. E Aetna Porcelain Enameling Co. 4701 Augusta Blvd. Chicago 51 Ill 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 & Porcelain Co. VOSE Wilfred Winstones Roofing Tile Works Ltd. Box 2 Plimmerton New Zealand VOSS Raymond O. G - 26 Pershing St. Corning N. Y. Corning Glass Works VOSS Wendell G. 27814 Rexford Ferro Corp. E Rd Bay Village Ohio VRETOS Epaminondas Institute of Chemistry & Agriculture N. Caneilopoulos of the Hellenic Co. Piraeus Drapetsona Greece ; VUKOVICH Milan Jr. MI 9 Dix Rd Woburn Mass Godfrey L. Cabot Inc. VOL 35 No. 10 1956 W WACHTMAN John B. Jr. B National Bureau of Standards Div 9.1 Conn Ave. & Van Ness St. N. W. Washington 25 D. WAGGONER Jack H. GF 240 Quentin Rd N. Newark Fiber Glass Div Pittsburgh Plate Giass Co. Obio WAGNER Bruce F. W 186 N. Vernon Ave. Pasadena 3 Calif B. F. Wagner & Co. WAGNER Harold C. R 968 Yellowstone Rd Cleveiand Heights 21 Ohio Zirconium Corp. of America WAGNER Rio B. D 1398 Brice Rd Reynoldsburg Ohio Perma Flex Mold Co. WAHL Albert J. W A. J. Wahl nc 3 Brocton N. Y. Central Ave. WAHLGREN Wald A. B. Gustavsbergs Fabriker Gustavsberg Sweden WAINER Eugene W Horizons Inc. 2905 E. 79th St. Cleveland 4 Ohio WAITE Virgil H. E 433 Beech St. Berea Ohio McGean Chemical Co. WAIVER Gedert J. W 909 87th St. North Bergen N. J. B. G. Corp. WAKEFIELD Richard E. B. B Hetherington Inc. 1200 Elmwood Sharon Hill Pa Ave. WAKELY Wilbur T. GJ Sylvania Electric Products Inc. 825 Lexington Warren Pa WALDAL James C. 2425 Second Ave. W. Seattle 99 Wash WALDEN Albert S. R National Carbon Co. Cleveland Ohio WALDHAUER William O. Savannah Terrace Apts Apt 25 North Augusta S. C. WALKER Eugene E. W 220 W. Sheridan Ave. New Castle Pa Universal Corp. WALKER Henry E. G Harding Glass Co. Sta B. Box 38 Fort Smith Ark WALKER Herbert M. W Walker China Co. Solon Rd Bedford Ohio WALKER John Morgan Crucible Co. Ltd. Battersea Church Rd London S. W. 11 England WALKER Warren W. B 29 Laurel Pl Upper Montclair N. J. Graphite Metallizing Corp. WALKUP D. H. W Kilgore Ceramics Corp. Box 1619 Kilgore Texas WALLA Max R. W Box 1369 Little Rock Ark Winburn Tile Mfg Co. WALLACE Arthur B. W 410 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 & Chemical Corp. East Liverpool Ohio WALSH REFRACTORIES CORP A. J. Tomasek 101 Ferry St. St. Louis 7. Mo. WALTER Jake J. 131 Stanton Ave. Ames Iowa WALTON Jesse D Jr. E 330 Fairway Rd N. E. Atlanta 19 Ga Engineering Experiment Station Georgia Institute of Technology WALWORTH Chester A. G Libbey Glass Co. Box 273 Charleston 4. W. Va WAMBOLD Jack 3 Kennametal Inc. Lloyd Ave. Latrobe Pa WAMPLER Roy W. G Libbey Glass Co. Technical Bldg 1701 E. Broadway Toledo 5 Obio WANG Chan Tektronix Inc. Box 331. Portland 7. Ore WANG Franklin F. Y. Glascote Products Inc. ' 20900 St. Clair Cleveland 17 Ohio WANGELIN H. P. E Universal Corp. 3305 W. Forest Home Ave. Milwaukee 15 Wisc WARD George V. R McLain Fire Brick Co. Div of H. K. Porter Co. Inc. Wellsville Ohio WARD George W. G Gustin Mfg Co. 210 W. Tenth St. Kansas City Mo. WARD John B. X Corning 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. Ogdensburg N. Y. WARDE John M. R Union Carbide Ore Co. Carbide & Carbon Bldg 30 E. 42nd St. New York 17 Y. WARE Robert K. 1407 Brackenridge 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 EI Pfaudler Co Research Laboratory 1000 West Ave. Rochester 3 N. Y. WARREN William R. 153 Hillside Clemson C. WARSHAW Israel B Glass Research Div - Pittsburgh Plate Glass Co. Creighton Pa WARSHAW Stanley I. Georgia Tech Box 4873 Atlanta Ga WARYGA Casimer F. R 863 Colwyn Rd Jenkintown Pa Frank Samuel & Co. Inc. WASHABAUGH Grover C. Jr. New Castle Refractories Co. New Castle Pa . M WASHINGTON BRICK CO Muirkirk Md WASHINGTON BRICK & LIME CO Walter Senters Box 2198 Spokane Wash WASHINGTON PORCELAIN CO E. R. Miller Willow St. Washington N. J. WASMANN Russell K. R Gladding McBean & Co. 1275 Harrison San Francisco Calif ROSTER 113 WATERS Marun R. WI 22 Red Rose Way Levittown Wenczel Tile Co. WATKIN Robert W. W 2507 St. Clair Ave. Pa East Liverpool Ohio Edwin M. Knowles China Co. TKINS E. Charles ( WJI Chapel ... R.R. 3. Zanesville Ohio Mosaic Tile Co. WATKINS George B. G Libbey Glass Co. 1701 E. Broadway Toledo 5 Ohio WATKINS Ray T. S C. S. Tariff Commission Ceramic Div Eighth & E Sts N. W. Washington 25. D. C. WATKINS Ens Robert V. I BOQ 674 Room 275 NAS Pensacola Fla WATKINS William E. MI 6363 Alderwood Rd Cleveland 30 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. Crooksville Ohio WATT POTTERY CO Loren Watt Crooksville Ohio WATTS Arthur P. R | A C Spark Plug Div General Motors Corp. Dept. Flint Mich 3103 WATTS Arthur S. Honorary WFI Lord Hall Chio State University . Columbus 10 Ohio UFLE Harold E. Gen. Del Alfred Y. WAUGH J. Stanley Mass Inst of Tech Bldg 20 Rm 001 Cambridge 39 Mass WAXLER Roy M. G National Bureau of Standards Conn Ave. & Van Ness St. N. W. Washington 25. 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 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 Refractories Co. WEBBERT 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 Deister Concentrator Co. , 901 Glasgow Ave. Fort Wayne BER Kenneth E. M 2514 Thayer St. Evanston III O. Hommel Co. WEBER Thomas W. 454 West Ave. Sewaren N. J. Ind VOL 35 No. 10 1956 WEBSTER Charles E. R1 311 E. Beaver St Zelienople Pa Refractories Co. WEBSTER David S Polychemicals Div West Virginia Pulp & Paper Co. Box 832. Charleston C. WEDDELL George G. M 125 Beverly Rd Pittsburgh 16 Pa Westinghouse Atomic Power Div WEEDY Robert C. R Harbison Refractories Co. Box 957 Windham Ohio WEEKS Ben W. M Allied Trading Corp. 807 Commercial Bldg Raleigh N. WEHTJE Ernst J. Box 269 Malmo , Sweden AB foverken & Skanska Cement WEHTJE Karl Fredrik A Rorstrands Porslinsfabriker Lidkoping Sweden WEIDEL Robert A. G 497 Apple Orchard Lane Webster N. Bausc&h Lomb Optical Co. WEIDENBAUM Sherman S. G 9 W. Second St. Corning N. Y. Corning 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 Cieveland 20. Ohio WEIL Kurt E. Rua Batatais 472 Sao Paulo Brazil WEINSTEIN Alex G Ednalite Optical Co. Inc. 200 N. Water St. Peekskill Y. WEINTRITT Donald J. M 5122 Pine St. Bellaire Texas Baroid Div National Lead Co. WEISE Robert L. G 446 E. Second St. Logan General Electric Co. WEISENSEEL Charles W. Jackson Tile Mfg Co. Box 2006. Jackson Miss Ohio WEISS E. Joseph BI Dept. of Ceramic Engineering University of Texas Austin Texas WEISS W. Russell R Wellsville Mo. . Wellsville Fire Brick Co. WEISZ Robert S. B International Telemeter 2245 Pontius Ave. Corp. Los Angeles 64 Calif WELCH A. Philip BI 7018 Glade Ave. Canoga Atomics International Park Calif WELCH Archibald S Cooksville Co. Ltd. 10 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 Harvey 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 Bldg Rm 4201 Ann Arbor Mich WELSHANS L. T. Diamond Alkali Co. Cement 300 Union Commerce Bldg Cleveland 14 Ohio Div WELTE Ralph J. S Summit Pressed Brick & Tile Co. Box 533 Pueblo Colo WELTERLEN James D. RJ 4630 Zane St. Los Angeles 32 Calif Gladding McBean & Co. WENCZEL C. W Wenczel Tile Co. Box 908 Trenton N. J. WENCZEL TILE CO C. Wenczel Box 908. Trenton 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 Trent Stafford England WENNING W. F. E Ceramic Color & Chemical Mfg Box 297 New Brighton Pa Co. WENTZ B. B. S Belden Brick Co. 700 W. Tuscarawas . St. Canton , 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 Haslemere Greenlane Buxton Derby England Derbyshire Silica Fire Brick Co. WEST Howard F. R Illinois Clay Products Co. 68 N. Chicago St Joliet Ill WEST Richard R. B Box 493 Alfred Y. State University of New York College of Ceramics WESTBROOK J H. B General Electric Co. Rm 3124 Research Laboratory The Knoils Schenectady Y. WESTERN BRICK CO I. R. Cline Danville Ill WESTERN ELECTRIC CO INC J. W. Scott 7650 Hawthorne Station Chicago 23 Ill WESTERN ELECTRIC CO INC W. J. Scott 2525 Shadeland Ave. Indianapolis 6. Ind WESTERN FELDSPAR MILLING CO V. E. Magnuson Box 671 Salida Colo WESTINGHOUSE ELECTRIC CORP John D. Harnish 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 5. Ont Canada WESTMONT O. B. R Manville Products Lompoc Calif Corp. WESTON Ralph H. SI Arketex Ceramic Corp. Brazil Ind WEST VIRGINIA BRICK CO Claude F. Wiseman Box 1071 Charleston W. Va ROSTER 115 WEYL Woldemar A. GF Div of Mineral Technology Pennsylvania State University University Park Pa WHALEN Thomas J. Hilltop Park Box 5. State College Pa HALLON William P. Jr. M Globar Div Carborundum Co. 3702 W. Beverly Dr. Dallas Texas WHEELER D. D. W Titanium Alloy Mfg Div National Lead Co. 111 Broadway New York 6 N. Y. WHEELER William H. RI Martin Aircraft Co. Engr Lab Martin Mail 366 Baltimore 3. Md WHEELING STEEL CORP Ernest B. Snyder Steubenville South Plant Steubenville Ohio WHELAN Paul T. R 11 Florence Terr Watertown 72 Mass ( Watertown Aresenal WHERRY Allen P. EI 9652 Oakdale Rd Parma 29 Ohio Hunter Assoc WHITACRE D. D. R Whitacre Fireproofing Waynesburg Ohio WHITACRE Co. 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. Lawkholine Ln Keighley Yorks England WHITAKER L. R. SFI Carolina Ceramics Inc. R. R. 3 Columbia S. C. WHITE Frank L. G 12147 Manor Detroit 4 Mich ( Ford Motor Co. WHITE George D. B 225 E. Drive Oakridge Tenn Carbide & Carbon Chemical Co. WHITE Harold E. RFI R. R. 6. Windy Knoll Butler Pa Lava Refractories Co. WHITE J. F. B 2016 Arrowood Dr. Cincinnati 31. Ohio General Electric Co. WHITE Jonathan S. W 1302 Singer Pl Wilkinsburg Pittsburgh 21 Pa Stupakoff Div Carborundum Co. WHITE O'Mara G 642 Fairmont Westfield N. J. Carborundum Co. WHITEHEAD Leland E. Box 6122. Virginia Blacksburg Va WHITEHEAD Merlin Tech Sta H. E Columbian Enameling & Stamping Co. Terre Haute Ind WHITESELL Lysie E. R Wellsville Mo. Wellsville 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 Ky WHITFORD William G. DF Box 38. Olympia Fields Ill University of Chicago WHITNEY Earl J. 39 W. Fifth St. Corning N. Y. WHITNEY Eugene H. R Gladding McBean & Co. Seattle 14. Wash Box 3152 WHITNEY John B. E 317 N. Bonner Ave. St. General Electric Co. Matthews K WHITSON Ralph E. W Aluminum Co. of America Box 300 Bauxite Ark WHITSON Richard E. Jr. G Dominion Minerals Piney River WHITTAKER Clyde M. W Box 960 New Castle Pa Va Universal Corp. WHITTAKER G. Ward W Union Meeting Rd Gen. Del Bluebell Montgomery County Pa Pa Universal Corp. WHITTEMORE J. W. SFI Virginia Polytechnic Institute Blacksburg Virginia WHITTEMORE O. J. S Vincent Clay Products Co. 615-19 State Bank 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 Schenectady N. Y. River Rd WICKS John Simison E Fairground Rd R. R. Fern Creek Ky General Electric Co. WIEGAND Frank R. BJ Box 732 Ft Huachuca Ariz C. S. Army WIKER Richard M. G 206 Rand Ave. Painted Post N. Y. Corning Glass Works WILANSKY Harold G 67 Sterling St. Corning N. Y. Corning Glass Works WILCOX Herman G. R 800 Ross Ave. Pittsburgh 21 Harbison Walker Refractories WILCOX James W. S Alliance Clay Product Co. Alliance Ohio Pa Co. WILCOX Paul D. 59 S. Grant St Midvale Utah WILDER David R. 1212 S. Third St. Ames Iowa WILKE William P. III 31 Hammond Lead Products Inc. 5231 Hohman Ave. Box 912 Hammond Ind WILKERSON Robert L. W Crescent Concrete Products Corp. 2933 Dauphine St. New Orleans La 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 & Wall Tile Ltd. WILLARD Henry G. MJ General Electric Co. Plainville Conn WILLEMS H. W. V. G 1513 Pacific Ave. Brackenridge Pittsburgh Plate Glass Co. Pa WILLIAMMEE G. Darby R R. R. 6. York Pa J. E. Baker Co. WILLIAMS Alan B. RI 105 McCarthy Dr. Augusta Ga Babcock & Wilcox Co. WILLIAMS Arthur E. G 1214 Eighth St. Moundsville W. Fostoria Glass Co. WILLIAMS Charles E 131 North St. Auburn N. Y. Va U. Army VOL 35 No. 10 1956 WILLIAMS Clyde RF Battelle Memorial Institute 505 King Ave. Columbus 1. Ohio WILLIAMS George F. G Illinois Technical Center 1700 N. Westwood Ave. Toledo , Ohio WILLIAMS Gordon R. W Box 136 Florence Ala Stylon Southern Corp. WILLIAMS Harry M. WI Insulator Dept General Electric Co. Charles & Cromwell Sts Baltimore Md WILLIAMS John A. W Box 250 Trenton 2 N. J. Mitchell Co. WILLIAMS John C. W Mt. Vernon Way Whippany N. J. Beil Telephone Labs WILLIAMS Leroy L. Jr. EI 3006 Adams Ave. Evansville Ind Whirlpool Corp. WILLIAMS Lloyd D. G Corning Glass Works Fallbrook Plant Corning N. 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 American Lava Corp. WILLIAMS Robert E. 1800 Crosby 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 B. E 1355 Crofton Rd Baltimore 12 Md Pemco Corp. WILLMORE Tracy A. R 1118 W. Illinois St Urbana Ill University of Illinois WILLS Robert E. R Box 220 Coal City Illinois Illinois Clay Products WILLSON PRODUCTS INC Thomas A. Willson Box 622 Reading Pa WILLSON Thomas A. G Willson Products Inc. Box 622 Reading Pa WILSON Bonum S. Jr. Box 1105 Clemson S. C. WILSON Calvin S. G Libbey Glass Div Illinios Ash St. & Wheeling R.R. Toledo 1. Ohio WILSON Charles L. S 217 N. Meridian St Brazil American Vitrified Products Ind Co. WILSON George R 131 Edison Ave. New Castle Pa New Castle Refractories Co. WILSON Homer W. S Delaware Clay Co. Box 352. Delaware Ohio WILSON Hugh H. Jr. BI Clemson College Olin Hall Clemson S. C. WILSON Maurice S. R Reynolds Dr.R. R. 2 Box 261 Wallingford Conn American Refractories & 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 117 WINBURN H. L. S Box 1369 Little Rock Ark Winburn Tile Mfg Co. WINEMILLER William F. R 11 Ardmore Road Worcester 9 Mass Norton Co. i LER Beno eramica Winkler Rua I de Marco 119 2 andar Rio de Janeiro Brazil WINSHIP Lee C. G Syivania Electric Products Emporium Pa Inc. WINTER Aciuta Institut d'optique Theorique et Appliquee 3 Bid Pasteur Paris 15 France WIRTH David G. Jr. 618 E. Daniel St Champaign Ill WISCONSIN PORCELAIN CO L. A. Stohl 120 Lincoln St. Sun Prairie Wisc WISE L. G. B E. I. du Pont de Nemours & Co. Inc. Chemical Dept. Experimental Sta Wilmington Del WISEMAN Claude F. S West Virginia Brick Co. Box 1071 Charleston W. Va WISHOSKI I. Stanicy R Industrial Heating 1400 Union Trust Bldg Pittsburgh 19. Pa WISS J. E. MFI 1339 Lincoln Rd Columbus 12 Ohio Consultant WITMER Frank G 612 W. Main St. Woodville Ohio Ohio Lime Co. WITSCHEY Ray A. R A. P. Green Fire Brick Co. Mexico Mo. TER Raymond 3 dificio Galipan A Av Miranda Rosal Caracas Venezuela Fabrica de Productos Ceramicos WITUCKI Robert M. G 4 W. Fifth St Corning Y. Corning Glass Works WITZEMANN W. W 220 Allegheny Ave. Kittanning Pa Eljer Ca. WOLCOTT J. David 35 Washington St. Hornell Y. WOLD 7. W Smith & Stone Ltd. Georgetown Ont Canada WOLFENSPERGER R. E. R Carborundum Co. 2600 Neville Rd Pittsburgh 25 Pa WOLKODOFF Vladimir E. B Carborundum Co. Buffalo Ave. Niagara Falls N. Y. WOMELDORPH R. C. G 13 Taft Ave. Providence R. I. WONGSOREDJO Rasmadji Balai Penjelidikan Keramik Ceramic Institute Djl Raya Timur 340 Bandung Indonesia WOOD Clifton E. W 512 E. Ellen Fenton Mich A C Spark Plug Div General Motors Corp. WOOD Kenneth T. R 102 Grace Blvd Painted Post N. Y. Corning Glass Works WOOD Llewellyn Jr. S Carrington Woods R. R. 4. Box 209 _ Milledgeville Ga Oconee Clay Products Co. WOOD Russell K. WI 3900 E. California St. Pasadena 10 Calif Wallace China Co. Ltd. Vol 35. No. 10 1956 WOODBRIDGE Thomas C. 38 Stirling Rd Hayes Middlesex England British Bath Co. Ltd. WOODRUFF Calvert M. W American Nepheline Ltd. Nephton via Lake^-eldOnt Canada WOODRUFF Emmest W. R Refractory Products Co. 910 Custer Ave. Evanston III WOODS C. J. X North American Philips Co. Inc. Research & Control Instruments Div 750 S. Fulton Ave. Mt. Vernon Y. WOODS Hubert B Portland Cement Assn 33 W. Grand Ave. Chicago 10 III 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 ) 861 Euclid Ave. Elmira N. Y. WOODWARD Thomas R. S 2558 Oakwood Ave. Zanesville Ohio Elgee Potteries Inc. WOOLDRIDGE Morris L. R Corning Fiberglas Corp. Glass Research Newark Ohio WOOLEY Seward E. RI 18 E. Brown St Somerville X. J. Manville Research Center WOOTEN John H. S 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 Engiand WORCESTER W. G. XFI 720 Sask Crescent E. Saskatoon Sask Canada WORK Lincoln T. B 36 W. 44th St Rin 800 New York 36. Y. Consulting Engineer WRIGHT D. K. E American Smeiting & Refining Co. 120 Broadway New York 5. Y. WRIGHT Edward P. WI Box 387 East Liverpool Ohio Taylor Smith & Taylor Co. WRIGHT J. E. Messrs A. G. Hackney & Fairfield Pottery Hanley Trent Engiand Co. Ltd. WRIGHT John C. / Mrs. Surton Alfred Station N. WRIGHT J. W. GI 2703 Densmore Dr Toledo 6. Ohio Owens WRIGHT Roy E. X Philadelphia Quartz Co. of Calif Sixth & Grayson St. Berkeley 10 Calif WUELLNER Joseph F. E 1602 Galion Ave. Cleveland 9 Ohio Ferro Corp. WURTSBAUGH C. G. W Glostex Chemicals Inc. 3056 Bandini Blvd. Los Angeles 23 Calif WYATT Bradley W. S Pacific Clay Products 9500 S. Norwalk Blvd. Los Nietos Calif WYCKOFF W. R. R Joseph Dixon Crucible Co. 167 Wayne St Jersey City 3 N. J. WYGANT James F. RI Standard Oil Co. Indiana Engineering Research Dept. 2400 New York Ave. Whiting Ind WYNDHAM Francis H. Jr. R Box 305 Avonmore Pa General Refractories Co. WYSONG Charles F. B 425 Clay St. Marietta Ga Georgia Institute WYSOR D. R General Chemical of Technology Division Allied Chemical Dye Corp. 40 Rector St. New York 6. N. Y. Y YAMAGUCHI Mitsuo W 72 Oakwood Ave. Arlington N. J. Noritake Trading Corp. YAMAMOTO Hideo G 305 W. 89th 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 Daigaku Tokyo Institute of Technology Ookayama Meguro Tokyo Japan YAMIN Michael G Mellon Institute 4400 Fifth Ave. Pittsburgh 13 Pa YARTE Andrew A. W Productos Ceramicos S. A. Apartado 486 Monterrey N. 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 Schurman Corp. 70 Portman Rd New Rochelle N. Y. YEATER Roy G. G Fostoria Glass Co. Moundsville W. Va YOSHIKI Bumpei 304 Tsurumi Tsurumi 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 Demuth Glass Works Inc Box 629 Parkersburg W. Va YOUNG Howard S. B R. R. 1. Chadds Ford Pa E. I du Pont de Nemours & Co. Inc. YOUNG James John G. Stein & Co. Ltd. Manuel Works Linlithgow Scotland YOUNG James E. S Structural Clay Products Research Foundation Geneva III. III. YOUNG John C. G Portuguese Bend Club Portuguese Bend Calif Hayward Scientific Glass Corp. YOUNG Lloyd G. G Corning Glass Works Corning N. Y. YOUNG Robert W. G American Optical Co. Glass Research Lab Southbridge 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 & Lomb Optical Co. 635 St. Paul St. Rochester 2 N. Y. YOUNG Willard G. WI Case Manufacturing Corp. 1000 W. Pine St. Robinson Ill ROSTER 119 YOUNG W. O. WI 6 Livingston St. Honeoye Falls Y. : Victor Insulators Div T Circuit Breaker Co. YOUNGBLOOD Charles J. Jr. Mississippi Glass Co. 88 Angelica St. St. Louis 7 G Mo. PUNT Richard V. G ' C. Tennant Sons & Co. 100 Park Ave. New York 17 N. YUTZEY Marvin G. D Fostoria Glass Co. 1200 First St. Moundsville W. 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 Penfield St. Pomona Calif Pomona Tile Mfg Co. ZARBO George G 88 Melrose St. Vineland N. J. Kimble Glass Co. ZAVIS Lewis W 11012 S. Chanera Inglewood Calif H. F. Coors Co. Inc. ZEHRLAUT Herbert A. R. R Calcium Aluminate Cement Corp. 232 E. 86th St. New York 28 N. Y. ZEILLER Irwin F. M 150 Mason Dr. Manhasset Long Island N. Y. B. F. Drakenfeld & Co. Inc. ZELLER CORP R. E. Costello Fort Wayne Rd De^-anceOhio ZERFOSS Samuel BF Mineral Products Div National Bureau of Standards Washington 25 D. C. ZICKEFOOSE Ellis J. R Griffin Wheel Co. 445 N. Sacramento Blvd. Chicago 12 Ill ZIEGFELD Robert L. 3 Lead Industries Assn 60 E. 42nd St. New York 17 N. ZIEGLE Glenn D. 409 W. University Champaign III ZIMAR Frank G Corning Glass Works Main Lab Corning N. Y. . ZIMMER David C. WFI 513 Harding Rd Zanesville Ohio Nelson McCoy Pottery Co. ZIMMERMAN Philip D. 611 W. Fayette Ave. Effingham III ZIMMERMAN William F. B 3836 McNicholas St. Cincinnati 36 Ohio General Electric Co. Gas Turbine Div ZINK George H. EI A. O. Smith Corp. 3535 N. 27th Milwaukee 16 Wisc ZINK Harold F. G Illinois 1700 N. Westwood Ave. Toledo 1 Ohio ZLOCK Evan P. G E Circuit Breaker Co. 601 E. Erie Ave. Philadelphia 34 Pa ZLOTNICK Herbert BJ 7902 Bay Pky Brooklyn N. Y. ZNEIMER Joel E. BI 108 Duff St. Watertown Mass Raytheon Mfg Co. ZORZI Eugene R. M C. Tennant Sons & Co. 100 Park Ave. New York 17 N. Y. ZUDNAK Stephen J. W Box 1599 Trenton N. J. General Porcelain Co. ZUMWALT Donald A. E 6904 E. Slauson Ave. Los Angeles 22 Calif California Metal Enameling Co. ZVANUT Albert J. B Lincoln Electric Co. 22801 St. Clair Ave. Box 3115 Cleveland Ohio ZVANUT Frank J. MI 14533 Bayes Ave. Lakewood Ohio Godfrey L. Cabot Inc. ZWERMANN Carl H. BF 806 W. Main St. Robinson Ill ZWETSCH Artur Villeroy & Boch Mettlach Germany Addenda FEE FEE FEE FEE FEE FEE 30 FEE FEE FEE FEE FEE FEE FEE FEE 1321 Old FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE 503 W. FEE Champaign FEE FEE FEE FEE A. FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE 120 ROSTER FEE FEE R. Prather FEE FEE FEE FEE FEE FEE FEE FEE FEE 601 W. FEE FEE FEE FEE Merle FEE 406 FEE FEE FEE FEE Ave. FEE FEE FEE 1005 S. FEE FEE FEE FEE FEE FEE FEE FEE W. FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE N. Y. FEE Electric FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE Ohio FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE Ltd. FEE FEE FEE FEE FEE FEE FEE FEE FEE N. f FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE FEE CERAMIC BULLETIN