Document OEG0Z2Qg0w4bMZDyBMY1D1Xbe
litr invAuucr* 19"6 Annual Reports
1
Dais Joiijrd
Camoany
19J7 1976 19)6 1956 19)6 1969 1947 1971 1918 1944 1917 19)7 1945 1944
967 976 9)6 969 976 976 976 976 966 979
?* 970
9 999 991 971 9 979 9SM 979 976 97a
97) 976 979 979 979 996 976 97'
976
917
977 9)6 966 97)
97.
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976
Abrasive Grata AssocUtioa
Allegheny County Sanitary Authority Allegheny Ludlam Industries, Ine. Allied Chemical Corp.
' Aluminum Company of America Aluminum Company of Canada, Ltd. American Can Co. American Foundrymea1* Society
American Insurance Association American Iron and Steel InetUute AMAX, 2nc. American Mining Congress
American Mutual Insurance AllUnea
A. O- Safety Products (Div. of
,
American Optical Corp.)
American Piiralnm lait ttut*
American Riiuunat China Council, Inc.
ASA RCO Incorporated
American Tuttle Mfrs. Institute, Inc.
American Welding 6 Manufacturing Ca.
American Wood Preserver* XnotUuta
Americhem Inc.
Anaconda Co. t Wire l> Cable Dlv.'
ARCO/Polytners, lac.
Ar|onaui laeuraneo Co.
BASF .Wyandotte Corp.
The Bahnaoa Co. Bruob Wellman, Inc. CPC international. Inc. Can Manufacturer* Institute, Inc. Cemeoted Carbide Produced* Aoaociatlon Certain.Teed St- Qobaln Ineulatioa Corp. Chryiltr Corp.
CibCol(fAO Coll Industries Iac. Columbia C Syitrm Service Carp.
Commercial Shearing, Inc. Cnmpsnbta Siderurgtca Naeional
Consolidated Edison Co. o( Hew York, Inc. Consolidated Nathrsl Css Service Co.
Consolidation Coal Co* Inc. O'Appoloni* Consulting Engineers. Inc.
DeSeie. Inc. Diamond Shsmreek Corp.
Dirk Corp. Duw Chemical IM A.
Dow Cormn| Corp* Orsaenleld Division. Herculee. Inc.
r
Dravo Corp. E. 1. du Pont do Hemourt 6 Co.
Eastman Kodak Co_. Minerals 6 Chemicals Division.
Eogslhard Minerals 6 Chemicals Corp.
Epic Metals CorpEquusble Lifs Assursne* Society of U- S.
Eason Corp. Esses Croup
Date Joined
Company
(
1977 1976
Falcon Foundry Co. Fort Pitt Steel Casting
1979 1976
..1936
FostorU CUs* Co.
Franklin Glue Co. . Foundry Supply Manufacturers Croup
1970 General Cigar Co., Inc.
1997 General Electric Co.
1951 General Mill*. Inc.
1992 1974 1989
Genual Motors Corp. General Refractories Co. Georgia Kaolin Co.
1937 ''Grinding Wheel Institute 1950 . Gulf on Corp.
1976 Halcon International. Inc.
19)0. Hall China Co. 1976 Harblson.Welker Refractories
1976 Hblns U.S.A. (Oiv. of H. J- Heins Co.)
1976 Hill 6 Griffith Co.
1973 ' Howell Industrial Clirpc
1937 Huntington Alloyu, inc.
1979 Industrial Cnskvi 6 Shim Co., Inc.
1973 IngsrsolWRand Co.
1997 InUod Stool Co,
1997. ISM* Corp.
1970 International Lead Zinc Research Org.
' (979 International Technical Information Inat.
19)9 Joha*Maoville Corp.
1939 1999
Janet 6 LAughlln Steel Corp. Kawockl Berylco Industrie*. Inc.
1979 Kopp Class. Ine.
1996 Hopper* Co., Inc.
1970 . 1962
Uclsde Stool Co. Lagevea, S.A.
1968 Homer Laughlln China Co.
1979 Lenoa Crystal. Inc.
1937 J. S.' McCormick On.
1976 Marathon Oil Co.
--
1966 Marcena MUinn Co.
**
1970 Marion Health o Safety. Inc.
1937 Metropolitan Ufe Insurance Oju-
1961 MU*e Laboratories, Inc.
1979 MlUikon Brick Co.
19)6 Mine Safety Appliances Co.
1974 Mobay Chemical Co-
1975 19)6
MonongaheU Iron 6 Metal Co., inc. Motor VuhUU- Mfrs. Aten, .-li'.S., Inc.
19)7 NL Industries, Inc.
1974 National Asmr*liny Dos Co.
197) National Forge Co.
1972 Organisation Ksscurrss Cciuiseiort. lr.c. I99J Owen*.Corning niwgiss Corp.
1937 PPG Indusirn-i.. .
19)7 Pennsylvania UU*. a-.no C.nry.
1972 Peoples Natural Css Co.
1975 Pittsburgh 6 Lake Erie Railr-.su
1970 pnsumalil Cr.rp.
1938 Portland Cement Association
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