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AFFIDAVIT CITY OF PITTSBURGH STATE OF PENNSYLVANIA ) ss BEFORE ME, a Notary Public in and for the State of APennsylvania personally appeared CIW/V9 E. Bgb)c)<l who stated under due oath of law as follows: am a librarian for jrary in Pittsburgh, Pennsylvania. The Carnegie Library contains original volumes of the publications and proceedings of the Air Hygiene Foundation of America, Inc., the Industrial Hygiene Foundation of America, Inc., and the Industrial Health Foundation, Inc. Attached hereto are pages which are true and correct copies of the publications and proceedings of The attached pages are ^ ^S^>jss/?s . ____~7yz^ /'At' ^ These documents are in such condition as to raise no suspicion concerning their authenticity; these documents are presently in AFFIDAVIT - PAGE 1 OF 2 LEGAL\AFF7K - November 9, 1992 the archives of the Science and Technology Section of the Carnegie Library, Pittsburgh, Pennsylvania; these documents have been in existence for twenty (20) or more years. Affiant, being first duly sworn, deposes and says: That the foregoing statements are true. SUBSCRIBED AND SWORN TO BEFORE ME on this the of November, 1992. NOTARY PUBLIC My Commission Expires: NvVAriV *=*._ [ j \ day AFFIDAVIT - PAGE 2 OF 2 LEGAIAAFF714 - November 9, 1992 TRANSACTIONS of TWELFTH ANNUAL MEETING of INDUSTRIAL HYGIENE FOUNDATION OF AMERICA, INC. NOVEMBER 20, 1947 /! / 4'Z _ / n MEMBERS OF INDUSTRIAL HYGIENE FOUNDATION A -- Abingdon Potteries, Inc. Abrasive Division, II.S. Rubber Company Abrasive Drain Association Abrasive Products Company Allegheny l.udlum Steel Corporation Allegheny Pittsburgh Coal Company AIlis-Chalmers Manufacturing Company Aluminum Company of America Amalgamated Anthracite Collieries, Ltd. American Abrasive Company American Air Filter Company, Inc. American Brake Shoe Company American Can Company American Cynnaniid Company American Emery Wheel Works American Iron & Steel Institute American Mining Congress American Optical Company American Radiator & Standard Sanitnry Corporation American Refractories Institute American Smelting & Refining Company American Wheelabrator & Equipment Co Aniericnn Zinc Institute American Zinc, Lead & Smelting Company Anaconda Copper Mining Company Anthracite Institute* Arrow Mutunl Liability Insurance Company Assn, of Casualty & Surety Companies* Atlas Powder Company Austin Motor Company, Ltd. Automobile Manufacturers Association --c-- The Carborundum Company Caterpillar Tractor Company Central Silica Company Chicago Wheel & Manufacturing Company Robert F. Coleman, Inc. The Colorado Mining Association Consolidated Mining & Smelting Company of Canada, Ltd. Cooper-Bessemer Corporation Corhurt Refractories Company Corning Glass Works Cortland Grinding Wheels Corporation Crucible Steel Company --D-- Davison Chemical Corporation Deckers Creek Sand Company A. P. DeSanno & Son, Inc. Detroit-Star Grinding Wheel Division Diamond Alkali Company Dow Chemical Company B. F. Drakenfeld Company Dravo Corporation t -- E-- Eaglc-Picher Company Eastern Gas ami Fuel Associates Ebasco Services, Inc. Electro Refractories & Alloys Corporation Eljer Company Ethyl Corporation Eureka Flint & Spar Company, Inc. Exolon Company II Ball Brothers Company Bartlett-Collins Company Bay State Abrasive Products Company Bethlehem Steel Company, Inc. Bird & Son, Inc. Bituminous Casualty Corporation Bridgeport Safety Emery Wheel Company Brush Beryllium Company Bunker Hill & Sullivan Mining & Concentrating Company Mllltl|ll<a ' 'Itcislllp F The Falk Corporation Federal-Mogul Corporation Firestone Tire & Rubber Company Firth Sterling Steel Company II. E. Fletcher Company Foote Mineral Company Ford Motor Company Foundry Supply Manufacturers Assn. Frazier-Simplex, Inc. Fuller Merriam Company The Funkhouser Company 80 MEMBERS OF INDUSTRIAL HYGIENE FOUNDATION --G-- Garco Products, Inc. Gardner Machine Company General Abrasive Company, Inc. General Ceramics & Steatite Corporation General Electric Company General Grinding Wheel Corporation General Motors Corporation General Refractories Company Glenslmw Glass Company, Inc. The Glidden Company Godrej & Boyce Manufacturing Company B. F. Goodrich Company A. P. Green Fire Brick Company II -- The Hall Chinu Company Hamilton Emery & Corundum Company Hampden Grinding Wheel Company Hawley Products Company Hazel-Atlas Glass Company Hercules Powder Company John W. Iligman Company Mauricio llochschild S. A. M. I. ft. Ilnmmel Company --I Imperial Chemical Industries, Ltd. Industrial Silica Corporation Inland Steel Company Intcrrhemicnl Corporal ion International Business Machines Corporation International Nickel Company. Inc. .1 Jackson Emery Mills Jamison Coal Xi Coke Company Johns-ManvilIc Corporal ion .1..... . & Lnughlin Steel Corporation K Keasbey anil Mattison Company Kennerntt {'upper Corporation Keystone Emery Mills Company, Inc. Kimble Glass Company The Kirk & Blum Manufacturing Company Edwin M. Knowles China Company Knppcrs Company - L-- Homer Lnughlin China Company Lava Crucible Company of Pittsburgh E. J. Lavino & Company Lead Industries Association --M Mackintosh-Hemphill Company Macktin Company Magma Copper Company Maryland Self-Insurers' Association Mayer China Company I. S. McCormick Company Metropolitan Life Insurance Company Mexico Refractories Company Mill-West Abrasive Company Mine Safety Appliances Company Monsanto Chemical Company Mutual Chemical Company of America NNational Association of Fan Manufacturers National Association of Mutual Casualty ( ompamrs* National Crushed Stum* Ass,,(-i;il ion, Inc. National Grinding Wheel Company National Industrial Sand Association National Lead Company National Pulverizing Company National Sand Gra'i I As-orialinn National Slag Association National Steel Corporation National Supply Cmepany The Neville Company New Jersey Pulverizing < ompany New .leisey Zinc Company North American Itch at lories Company Norton Company Norton Pike Company n Ontario Mining Association Oriental Abrasive Company ( M tawa Silica Company Owcns-Cnrning Fiberglas Corporation Owens-Illinois Glass Company * Mnllinlr .'ll-mill i -nip 81 MEMBERS OF INDUSTRIAL HYGIENE FOUNDATION SPECIAL SUBSCRIBERS i* Peninsular Grinding Wheel Company Penn-Rillton Company Pennsylvania Glass Sand Corporation I'helps Dodgr Corporation Pittsburgh Coal Company Pittsburgh Coke & Chemical Company Pittsburgh Plate (.lass Company Portland Cement Association Posture Research Institute Powers X-Ray Products, Inc. Precision Grinding Wheel Company, Inc. The Pullman Company Pyrene Manufacturing Company --R Rayhestos-Manhattan, Inc. Republic Steel Corporation Revere Copper and Brass, Incorporated Rialto Mining Corporation II. II. Robertson Company Robertson Manufacturing Company --S-- Safety First Supply Company Sand Products Corporation Claude B. Schneihle Compnny Scott Aviation Corporation Sharon Steel Corporation Shenango Kurnnce Company Simonds Abrasive Company Simonds Worden White Company South West Box Company St. Joseph Lead Company Standard Lime & Stone Company The Standard Ultramarine Company Sterling China Company Sterling Crinding Wheel Division Sun Oil Company Sun Sand Company Sylvania Electric Products, Inc. * ||*|p UNITED STATES GOVERNMENT Tata Industries, Ltd. Taylor, Smith & Taylor Company Tennessee Copper Company Texas Oulf Sulphur Compnny Titan Abrasives Company Toledo Eilison Company Trenton Potteries Company Armed Forces Army Medical Library Bureau of Medicine & Surgery, Navy Dept. N'aval Air Station, Alameda, Calif. Naval Air Station, Pensacola, Florida I Naval Cun Factory, Washington, D.C. f Naval Radiation Lab., San Frnncisco. Calif. Navy Yard, Boston, Mass. Navy Yard, Bremerton, Wash. U-- Union Asbestos & Rubber Company Navy Yard, Brooklyn, N.Y. Navy Yard, Charleston, S.C. | Navy Yard, Mare Island, Calif. Union Carbide & Carbon Corporation ^ Navy Yard, Pearl Harbor, Hawaii United Stutes Potters Association 1 Navy Yard, Philadelphia, Pa. United States Smelting Refining & Mininr f Navy Yard, Portsmouth, N.ll. Company I Navy Yard, Portsmouth, Va. United Stntes Steel Corporation of Del. | Navy Yard, San Diego, Calif. Universal Sanitary Manufacturing Compin' Navy Yard, San Francisco, Calif. Utilities Research Commission* f Navy Yard, San Pedro, Calif. Office on Industrial Relations, Navy Dept. Valley Mould & Iron Corporation Van Cleef Bros. Vanadium Corporation of America Vesuvius Crucible Company Vitreous China Plumbing Fixtures Association Vitrified Wheel Company --W-- Waltham Grinding Wheel Company Washington Mills Abrasive Company Wedron Silicn Company Western Precipitation Corporation Westfielu Grinding Wheel Company Westinghouse Air Brake Company Wcstinghouse Electric Corporation Whitehead Brothers Company Willson Products, Inc. Winthrop-Stearns, Inc. Wisconsin Abrasive Company Wolf's New Process Abrasive Wheel, Inc. --Y-- Youngstown Sheet & Tube Company Other Federnl Agencies Tennessee Valley Authority t'.S. Civil Service Commission l\S. Public Health Service * '1ii npi Now Vnrk S;i li 1*'l .tin l-.* \\ STATE DEPARTMENTS OF HEALTH Alabama California Connecticut Georgia Idaho Illinois Indiana Iowa Kansas Kentucky Maryland Michigan Missouri Montana New Hampshire New Jersey Ohio Oregon Pennsylvania Tennessee Utah Vermont Virginia Washington West Virginia Wisconsin Other Stnte Agencies New Jersey Department of Labor New York Department of Lubor New York State Insurance Fund New York State Library Ohio Industrial Commission CITY DEPARTMENTS OF HEALTH Baltimore Detroit St. Louis SPIN I \I.IS I S Mr. T.J. Barry Mi .1 II Hold- Dr. Elston L. Belknap l*r It I John i Dr. Charles Kent in (innd I li I led w ig S K Dr. J. W. (i. Hannon In ( an y I' M. 1 Dr. E. It. Ilaybui-I Di.C < Sappm- INSTITUTIONS INII OIIII.lt organizations American Association of Industrial Physicians and Surgeons Argonnc National Laboratory Carnegie Library of Pittsburgh Health Institute of the UA W-CIO Jefferson Medical College Johns Hopkins University New York Academy of Medicine New York University Safety Research Institute University of California University of Colorado University of Rochester University of Texas FOREIGN COUNTRIES Atkiebidaget NoidUka Bokhamlelu. Sw llockhumlcl Kemiuk. Ilollaml I >*'|>;irt nirnt of N;itinh;il llraltli ami WrlfjiiT Lihntiy, Ollaua <; vv u.m - i:. pm.t. s.t* k.t * i It Knw. Halifax. N..\ , S. "t |;i 1 1 ' Wimlmh. 1 Mim >111 on Department of Health & Public W clf;ii Winnipeg Faculdade ile lligiene, Sao Paulo. lit; /1 Government Mining Engineer, Johannesburg. South Africa Health Department. Wellington, New Zealand I. C. I. of Australia & New Zealan .1, M* Industrial Health Research lioaid . 1 .mi International Labor Ollice Mooli :tl. I ':io:mI;i r,,, i . s it /. i Medical Research Council HimmIoii. l-'imlaml I'.tirlhl S \\ .1 Ministry of Health, Quebec Ministry of Labour & National So t v in , London Oslo Arbeidsncmd, Norway Eidanger Salpeterfabriker, Norw;;iy University of Sydney, Australia Workmen's Compensation Board. Vancouver. B.C. 82 HA AFFIDAVIT CITY OF PITTSBURGH STATE OF PENNSYLVANIA ) ss BEFORE ME, a Notary Public in and for the State of Thck'cM~Pennsylvania personally appeared rd&'HVS p. who stated under due oath of law as follows: I, am a librarian for the Carnegie Library in Pittsburgh, Pennsylvania. The Carnegie Library contains original volumes of the publications and proceedings of the Air Hygiene Foundation of America, Inc., the Industrial Hygiene Foundation of America, Inc., and the Industrial Health Foundation, Inc. A.Attached hereto are pages which are true and correct copies of the publications and proceedings of ./,____ /A37..__________________________________________________________________________ The attached pages are jTZypyty. ^ y?j*=r >5y These documents are in such condition as to raise no suspicion concerning their authenticity; these documents are presently in AFFIDAVIT - PAGE 1 OF 2 IEGAIAAFF714 - November 9, 1992 the archives of the Science and Technology Section of the Carnegie Library, Pittsburgh, Pennsylvania; these documents have been in existence for twenty (20) or more years. E(mv&z lobfc\<L Affiant, being first duly sworn, deposes and says: That the foregoing statements are true. S> SUBSCRIBED AND SWORN TO BEFORE ME on this the 11* day of November, 1992. ` 10__________ LOjLeiA^ NOTARY PUBLIC \-\ . My Commission Expires: 1i -- r - AFFIDAVIT - PACE 2 OF 2 LEGAL\AFF714 - November 9, 1992 AIR HYGIENE FOUNDATION OF AMERICA, Inc. PROCEEDINGS OF ANNUAL MEETING AND RESEARCH PROGRAM ,PITTSBURGH, PENNSYLVANIA APRIL 1 1937 FOREWORD This bulletin covers in outline the proceedings of the annual meeting of Air Hygiene Foundation, held at Mellon Institute, Pittsburgh, Pa., February 9, 1937. Appended are recommendations by the three major com mittees--Medical, Preventive Engineering, and Legal--for re searches which are agreed to be of immediate importance. Some of the projects can be completed in a few months, others will require several years. The Board of Trustees has approved the program, contingent upon the raising of the necessary funds. Dues from the pres ent membership, upon the modest scale in effect for 1937, will be insufficient to finance the work. It is hoped that enough additional industrial concerns will affiliate to make it possible to proceed with these studies which are of vital importance to industry. H. B. MELLER Managing Director 4400 Fifth Avenue Pittsburgh, Pa., April 1, 1937 AIR HYGIENE FOUNDATION OF AMERICA, INC. ANNUAL MEETING OF MEMBERS Pursuant to the provisions of the Code of Regulations and notice given to each member, the annual meeting of the mem bers of Air Hygiene Foundation of America, Incorporated, was held February 9, 1937, at Mellon Institute of Industrial Re search, Pittsburgh, Pennsylvania. Roger A. Hitchins, Chairman, presided, and Henry A. Middleton acted as Secretary. Seventy-one out of a total of one hundred forty-three mem ber companies were present, either by proxy or by personal representative authorized to vote. The following individual members also were present: Roger A. Hitchins C. E. Lesher H. A. Schultz R. R. Sayers, M.D. B. D. Saklatwalla V. P. Ahearn A. W. Sherwood W. P. Yarn The membership roll was called and all proxies presented were inspected and approved. The minutes of the special meeting of members, held No vember 24, 1936, were read and, on motion, approved. Reports from the Treasurer, the Managing Director, and the Research Committee were received and, on motion, approved. The Chairman then called for election of trustees and asked that, pursuant to the provisions of the Code of Regulations, the members first fix by vote the number of trustees who shall constitute the Board for the ensuing year. By unanimous vote of the members present, it was ordered that the Board for the ensuing year consist of twenty trustees. The Nominating Committee reported the nomination of the following for trustees : Roger A. Hitchins, Ch., National Refractories Company H. A. Schultz, V. Ch., United States Steel Corporation L. T. Williams, Sec.. Williams, Eversman and Morgan B. D. Saklatwalla, Tr,, U. S. Rustless Steel & Iron Corp'n V. P. Ahearn, National Industrial Sand Association Vandiver Brown, Johns-Manville Corporation C. E. Lesher, Pittsburgh Coal Company R. R. Savers. M.D., U. S. Public Health Service 1 A. \V. Sherwood, Owens-Illinois Glass Company W. P. Yant, Mine Safety Appliances Company Joseph Dilworth, Westinghouse Electric fit Manufacturing Co. Andrew Fletcher, St Joseph Lead Company D. Harrington, U. S. Bureau of Mines E. A. Hults, Mathieson Alkali Works, Inc. On motion, the above-named were elected to serve for the ensuing year, and were authorized to add to their number six additional members as desired. Roger A. Hitchins Chairman Henry A. Middleton Assistant Secretary 2 Researc The research program of designed to help combat o inhalation of various danger; forms of air pollution in indi based on the recommendatic Preventive Engineering, and the Board of Trustees. The recommendations on the findir were made last year. These what is known and what rerr cupational diseases under inv for the coming year follows: MEDICAL 1. Study of the mechanism upon the body. It still rema should be classified among t merely be called an irritant, had important medico-legal i' course of utmost importance i tissues. Experiments are nobiological action of all the k representative types of comb comparison might furnish a which must be investigated; it any types of silica can be d hazards. Other experiments designed to discover whether < to what extent. This basic knowledge is e. frevention of silicosis. 2. Possible effects of the silica for a short time. Can s to five years ordinarily refer (a) It is often asked wh cessive concentrations of silic deleterious effects upon the 1 answered by experimental me to produce disease in animals beings but the principle can i (b) Such experiments can i Air Hygiene Foundation of America, Inc. Roger A. Hitch!n, (Cb.) H. A. Schultr (V. Ch.) Lloyd T. William. (8ac.) B. b. Saklatwalla (Traae.) V. P. Ahe.ro Vandiver Brown Joeeph Dllworlh Andrew Fletcher Dan Harrington E. A. Hulta C. E. Leaber R. R. Bayern. M.D. A. W. Bnerwood W. P. Yen! BOARD OP TRU8TEES National Rclractoriea Company U. S. Steel Corporation Willlama. Eventnin A Morgan U. S. Ruatleea Steal A Iron Corp. National Induatrlal Sand Aaa'n Johne-Manvillt Corporation Weatinghouee Elec. A Mfg. Co. St. Joeeph Lead Co. U S Bureau of Mlnea Mathieeon Alkali Worka. Inc. Pittiburgh Coal Company U. S. Public Health 8enrlce Owena-Illlnola Glaaa Company Mina Safety Appliance. Co. Philadelphia. Pa. New York. N. Y. Toledo, Ohio Plttaburgh. Pa. Waahlngton, D- C. New York. N. Y. E. Plttaburgh. Pa. New York. N. Y. Waahlngton, D. C. New York. N. Y. Plttaburgh. Pa. Waahlngton, D. C. Toledo, Ohio Plttaburgh. Pa. H. B. Mailer 8. R. Haythora, M.D. Henry A. Middleton P. P. Rupert John P. McMahon EXECUTIVE 8TAPP Managing Director Medical Adviaor Aaaietant Secretary Aaaietaat Secretary Eaecutlva Aaaietant Plttaburgh, Pa. Plttaburgh. Pa. Toledo, Ohio Plttaburgh, Pa. Plttaburgh, Pa. A. J. Lanta. M.D. (Ch.) Leroy U. Gardner, M.D. 8. R. Haythom, M.D. T. Lyla Hailett, M.D. R. R. Jonee. M.D. E. P. Pendergreen, M.D. O. A. Sander, M.D. R. R. Bayern, M.D. MEDICAL COMMITTEE Metropolitan Lila Ioeurance Co. The Saranac Laboratory 8lnger Memorial Laboratory Weatlnghouaa Elec. A Mfg. Co. Bell Telephone Co. Univeralty Hoapltal Consultant U. 8. Public Health Service New York. N. Y. Saranac Lake, N. Y. Plttaburgh, Pa. B. Plttaburgh, Pa. Plttaburgh. Pa. Philadelphia, Pa. Milwaukee, Wia. Waahlngton, D. C. PREVENTIVE ENGINEERING COMMITTEE Philip Drinker (Ch.) Warren A. Cook J. M. DaUaVaUa T. P. Hatch H. M. Nichols 8. C. Veaay W. P. Ysut Harvard School ol Public Health Bur. Occ. Die., Dept, of Health U. 8. Public Health Service Dlv. Ind. Hyg., 8tate Dept. Labor B. P. Sturtevant Company W. W Sly Manulacturlng Co. Mine Safety Appliances Co. Boston, Maaa. Hartford, Conn. Waahlngton, D. C. New York. N. Y. Hyde Park, Maaa Cleveland, Ohio MmUiuhIi Pa A. C. Hlrtb (Ch.) Vandiver Brown Theodora C. Waters LEGAL COMMITTEE Owens-Illinois Glaaa Co. Johna-Manvllle Corporation Mullikln, Stockbrldgs A Waters Toledo, Ohio Haw York* N. Y. Baltimore, Md. H. T. Herr, Jr. (Ch.) Franklyn B. Cola P. C. Davidson Francis C. Frary Victor L. Hall A. C. Jackaon T. Tracy Lawson Harry B. Lindsay J. T. Ryan MEMBERSHIP COMMITTEE J. 8. McCormick Company Los Angeles Chamber ol Commerce Foundry Supply Mira. Aaa'n Aluminum Company of America Glass Containers Aaa'n Floridin Company Barra Oranlta Aaa'n Grinding Wheal Mira. Aaa'n Mina Safety Appliances Co. Plttaburgh, Pa. Los Angelce, Calif. New York. N. Y. Now Kensington, Pa. New York. N. Y. Warren. Pa. Barre, Vermont Worcester, Maas. Pittsburgh, Pa. 12 Members of Air Hygiene Foundation, as of April 1, 1937 Abingdon Sanitary Manufacturing Co. Abrasive Company Abrasive Mining A Manufacturing Co. Abraaiva Producta Company Allegheny 8tce! Company Aluminum Company of America American Abraaiva Company American Air Filter Company American Brake 8hoe and Foundry Co. American Emery Wheel Worka American Mining Congreaa American Refractories Institute American Smelting A Refining Co. American Zinc Institute American Zinc, Lead A Smelting Co. Anaconda Copper Mining Company Aabcetoa Fibre Spinning Company Aabury Graphite Mills, Inc. Attapulaua Clay Company Automobile Manufacturer* Association Bartiett-CotUna Co. B. F. Drakenfeld Company Frank Bancroft Company Barra Granite Association C. O. Bartlett A Snow Company Bay 8tate Abrasive Producta Company Bird Archer Company Black Producta Company Blew-Knox Company Bridgeport Safety Emery Wheel Company Brockway Glaaa Company, Inc. Buck Glass Company Buckeye Producta Company Bunker HU1 A Sullivan Mining A Con* ceotrating Company The Carborundum Company Central Silica Company Central Pa. Coal Producer* Aaao. Chicago Wheel A Manufacturing Company Climax Molybdenum Company Consolidated Pddspar Corporation Copperweld Steel Company Coming Glaaa Worka Cortland Grinding Wheels Corporation Denver Fire Clay Company A. P. deSanno A Son, Inc. Detrolt*8tar Grinding Wheel Company Diamond Alkali Company Dravo Corporation E. I. duPont deNemours A Company Eagle Pichcr Lead Company Ethyl Gasoline Corporation Eioton Company Feldspar Milling Company FUntkote Company Foundry Supply Manufacturers Association Gatke Corporation General Abrasive Company General Grinding Wheels Corporation General Refractories Company Genesee Feldspar Company Gladding, McKean Company Glass Container Association Golding-Kcene Company Goulda Pumps, lac. Gjrpaum Association A. P. Green Fire Brick Company Grinding Wheel Manufacturer! Association Hall Company, The Hamilton Emery A Corundum Company Hampden Grinding Wheel Company Hsrblson-Walker Refractories Company Heels Mining Company Hercules Mining Company John W. Higman Company Hill A Griffith Company, The Idaho-Maryland Mine* Corporation Illinois Clay Producta Company Induatrlal Silica Corporation Institute Boiler A Radiator Mira. Aaao. International Nickel Company Johna*Manville Corporation Keystone Emery Mills Edwin M. Knowles China Company, The Laclede-Christy Clay Products company Laughlin, Homer China Company Lava Crucible Company of Pittsburgh E. J. Lavino A Company Lead Industries Association Libbey-Owens-Ford Glaaa Company Los Angeles Chamber of Commerce MackUn Company Magma Copper Company Mathieaon Alkali Works, Inc. Mayer China Company, The J. S- McCormick Company Metals Refining Company Mexico Refractoriea Company Mid-West Abraaiva Company Mine Safety Appliances Company Monsanto Chemical Company National Feldspar Association National Grinding Wheel Company National Industrial Sand Association National Lead Company New Castle Refractories Company North American Refractoriea Company North Carolina Feldspar Corporation Norton Company S. Obermayer Company Ottawa Silica Company Owens-Illinois Glaaa Company Peninsular Grinding Wheel Company Prnn-Rillton Company Pennsylvania Glass Sand Corporation Charles E. Pettinot Phelpa* Dodge Corporation Pittsburgh Clay Pot Co. Pittsburgh Coal Company Pittsburgh Plate Glaaa Company Pittsburgh 8illca Sand Company Portsmouth Refractories Company Precision Grinding Wheel Co., Inc. Qui|ley Company Rialto Mining Company II. H. Robertson Company Safety Grinding Wheel A Machine Co. Claude B. Schneible Company Seaboard Feldspar Company Sebring Pottery Company Simonds Worden White Company Simplex Engineering Company Smith Facing A Supply Company 8olvay Process Company St. Joseph Lead Company Standard Abraaiva Wheel Company 13 Standard Sanitary Maaofactnriaf Ca. Sterbaf Grinding Wheel Company Frederick B. Stereo*, Inc. Stockton Fira Brick Company Superior Flake Onptaiu Company Chat. Taylor Sona Company Tha Taylor, Smith ft Taylor Company Titan Abraairee Company Tranton Pottariea, Inc. Tri-Smta Zinc t Land Or* Producer! Association Union Carbide Company Unread Faidapar Corporation Unitad Btataa Graphite Company United Seatea Pattern Aaaociatrog United Smtm Smahiac, Refining ft Hin> inf Company Uaitad Btataa Steal Corporation Uaivenal Sanitary Maanfacturing Co. Vitrified Wheel Company Vitraona China Plumbing Fixtures Aaso. Waltham Grinding Wheel Company Waabiagma Mill* Emery Manufacturing Company Wodron Silica Company Wail-McLain Company Waat Company WmtfiMd Grindin( Wheel Company Waatmphonaa Air Brake Company Waatmghouae Electric ft Manufacturing Company Whitabaad Brother! Company Wdaon Product*. Inc. Wiaconain Abrasive Company Welfa Now Procata Abrasive Wheal, Inc E. J. Woodiaon Company / / 14