Document em6KxY7BDb24Nq7416OJydLwp

Date Joined Company Date Joined 1967 ITT Abrasive Products Co. 167 1936 1936 1963 1967 1953 1965 1942 ' 1968 1966 1964 1936 1958 1961 1937 1937 1966 1966 1949 1937 1968 1936 1968 1966 1956 1963 ' 1966 1937 1947 19371937. 1966 ` 1937 1938 1962 .1967 . . 1963 1953 ;. 1936 Johns-Manvllle Corporation Jones h Laughlin Steel Corp. Jowitt b Rodgers Company 1968 1952 1937 Kasco Abrasives, Inc. Kennecott Copper Corporation Keystone Brass Works, Inc. Hoppers Company, Inc. 1937 1956 1966 1956 Homer Laughlin China Company 1962 Laundry and Cleaners Allied Trades Association 19oa Lave rack 6 Haines. Inc. Lead Industries Association London Transport Board Lord Corporation Hughson Chemical Co, Div. 19b7 1964 1965 1953 1968 J. S. McCormick Company Macklin Company Manufacturing Chemists' Assn. 1"45 1946 Marcona Mining Company Metropolitan Life Insurance Co. Mid-West Abrasive Company 1938 19o0 Midwestern Coating Corporation Mine Safety Appliance! Company Mobay Chemical Company Mobil Oil Corporation 1 c36 1936 1436 JesseS. Morie 6 Son. Inc. 1937 Nalco Chemical Company Treeport Division 1960 1935 National Coal Association National Crushed Stom Assn. ,lnc. lo7 National Class Sand Corporation 1937 National Grinding Wheel Co- i Inc. 3437 National Industrial Sand Assn. 1937 National Insulation Manufacturers 1962 Association 1037 National Lead Company 1967 -. National Sand and Gravel Assn. ,Inc. National Slag Association Nederland duPcr.t deNemours N. V., Pc 1 Norton Company Grinding Wheel Division . -oB Osbcrr. Manufacturing Company . Gwens-Ccrr.ir.g "iberg'.as -Corp.' Owens-Illinois, Inc. 1436 1954 1937 1956 . i9601964 1938 1937 Pacific Grinding Wheel Mfg. Co. Pennsylvania Glass Sand Corporation Pennsylvania Manufacturers' Assn. Insurance Company Petrobras/RPBC Pittsburgh Activated Carbon Co.. Div. of Calgon Corporation Portland Cement Association PPG Industries jJ . , w'f. V I A . Company Precision Grinding Wheel Company. Inc. Raybeetoe.Manhattan, Inc. Manhattan Rubber Division Red Hill Grinding Wheel Corporation H. H. Robertson Company St. Joseph Lead Company SauereUen Cements Company Sinclair-Koppers Company Soap and Detergent Association Sperry Rand Corporation Louisiana Army Ammunition Plant Sprayed Mineral Fiber Manufacturers Association, Inc. Standard Oil Company (Indiana) Standard Oil Company (New Jersey) Sturm. Ruger h Company, Inc. Sugar Beet Products Company SysteMed Corporation Tata Services Limited Tennessee Copper Company Div, of Tennessee Corporation Texas Gulf Sulphur Company Toms River Chemical Corporation Union Carbide Corporation United States Potters Association United States Steel Corporation Valley Mould and Iron Corporation Van Straaten Chemical Company Vesuvius Crucible Company Wallace-Murray Corporation Simonds Abrasive Division Waltham Grinding Wheel Company Washington Mills Abrasive Company Wedren Silica Company -Western Electric Company. Inc. Westfield Grinding Wheel Company Westinghouse Air Brake Company Westinghouse Air Brake Division Westinghouse Brake anc Signal Ci. . Ltd. Westinghouse Electric Corporation Arthur C. Withrow Company .. - Zinc Institute'. Inc.