Document X89qKLgdjaoLGa6zBOzJgn9JR

. l-cpi*r.y ; well industrial Clinic J bine d s : i . ; 1973 Company PPG Indus".ries, Inc, luntinrtor. A..oys, Inc. I.'.i Corp. Cl Americas, Inc. _____ . . 1937 ' 1947 1978 i7t.*Vv fc h f Tht Refr:'.ori*i Institute H. H. Root rucr, Co. Safety Firet Industries, Inc, vine Park Medical Clinic, lrtc. hns-Manville Cor, . ,.n All o' America Corp. . :-p Glass, Inc. i 980 S:. Joe Minerals Corp. 1936 i -`.sulreiscn Cerr>..c.-.ts Co. i1983 Schneider, Inc. 1974 Schiiylkil) Metals Corp. uppers Co. ,lhc, GOVEK, S. Af . 1942 7hi Standa.-c Oi: Co. 1962 j Kf r'.'Statt Electric Supply Co, J oinJ^ 193: 1976 1937 1972 1937 1 983 1 981 1977 1975 1982 e Homer Laughlin China Company vnox Crystal, Inc, 1 it T Chemicals, Inc. . H. Masiand k Sons . .McCormick Co, ctropolitar. Life Insurance Co. ic.tsch Refractories, Inc. Safety Appliances Co. '.r.erals It Chemicals Div. . Engelhard Corporation .ioay Chemical Corp; r.cr.al Annealing Box Co. Castle Pieiractories Co, tr.s-Cornir.c Piberglas Corp. ikaa/Inc, -.v.a, Glass Sand'Corp. --r_nsylvan:a Power Coi tries Narura'. GasCo, ^ 1968 Thermal Insulation Mfrs.Assr.. , Inc. 1974J w 'TIMA I 1978 j In 7, Tilt Cou.nr:.' of America, Inc. 1966 1978 1978 1937 j 1937 | 1981 ] 1,9 3Ej L:-7RV," 3eariny.s Division : L-.V: Incorporate *A*k* U ,S. Fid' elj:' v` it Guaranty .C-o, ------Vnited States Mineral Products Co. 'Reinstated) at!<.7he Vr.itec States Fetters Assr.. 1981 i 1976 1979 1980 1936 1973 ij united Tecbr.oiories Coro;ratter 1982 1974 1 >L.`r.ivt rsal-C" tiops Div., Cyclops Corp. 1983 1974 I 1979 j 1953 p Vesuvius.Crucible Co. W VcIV.swaps:. America. Ir.c. ffi *`'*Ar-CO Rail wav Products Grout 1938 1977 1976 1 978 1 1937;] 1-978 I gr V a*. : r,-Star.::-. rc Ca. 8 *"er.::.el Tilt Co. g Vests m Electric Co,, Inc. ' 1974 1977 1962 1972 jj |*5 V'esf.r.ghouie Electric Ccrp. 1937 : f bur eli Corning Corporation "i ourgh it Lake Erie Railroad '.i cur pit Railcar, Inc. ".land Gemer/. Assn. *:t rs Industries, Inc. 1980 jg 7he V,"nita:r: -Gre-.r Firecroofir.r Go, 1979 1 c75... i eS V.cVm-.re Sv?: .ms .t. ,Inc. 1979 1952 193B !1 70 6^ i i _______ ___ _____________ '------------