| TRI ID | facility name (reporting year) | Address |
| 26101MSCPL3801C | O. AMES CO. (1995) | 3801 CAMDEN AVE. PARKERSBURG , WV 26101 |
| 26101MSCPL3801C | O. AMES CO. PLANT 1 (1998) | 3801 CAMDEN AVE. PARKERSBURG , WV 26101 |
| 26101MSCPL3801C | O. AMES CO. PLANT #1 (1989) | 3801 CAMDEN AVE. PARKERSBURG , WV 26101 |
| 26101MSCPL3801C | O. AMES CO. PLANT ONE (1987) | 3801 CAMDEN AVE. PARKERSBURG , WV 26101 |
| 25015CCDNTDUPON | OCCIDENTAL CHEMICAL CORP. (1987) | DUPONT AVE. POST OFFICE BOX 615 BELLE , WV 25015 |
| 26003HVLLYCOMMU | OHIO VALLEY STEEL CO. BUMGARDNER FOUNDRY DIV. (1988) | COMMUNITY ST. WHEELING , WV 26003 |
| 26003HVLLY20THS | OHIO VALLEY STEEL CO. FABRICATION DIV. (1989) | 20TH ST. WHEELING , WV 26003 |
| 25303LNCRP95MAC | OLIN CORP. (1987) | 95 MACCORKLE AVENUE S. W. SOUTH CHARLESTON , WV 25303 |
| 25130MRMNNRTE85 | OMAR MINING CO (2004) | ROBINSON CREEK RD MADISON , WV 25130 |
| 25130MRMNNRTE85 | OMAR MINING CO. (1998) | RTE. 85 S. ROBINSON CREEK RD. MADISON , WV 25130 |
| 25130MRMNNRTE85 | OMAR MINING CO INC (2003) | ROBINSON CREEK RD UNEEDA , WV 25130 |
| 26135BNSRNSTATE | ORMET ALUMINUM MILL PRODS. (1995) | WV ST.RTE. 2 FRIENDLY , WV 26146 |
| 26135BNSRNSTATE | ORMET ALUMINUM MILL PRODS. BEN RUN FACILITY (1992) | WV ST.RTE. 2 FRIENDLY , WV 26146 |
| 26135BNSRNSTATE | ORMET ALUMINUM MILL PRODS. CORP. (1998) | 2203 S. STATE RTE. 2 FRIENDLY , WV 26146 |
| 26135BNSRNSTATE | ORMET ALUMINUM MILL PRODUCTS CORP (2003) | 4203 S STATE RT 2 FRIENDLY , WV 26146 |
| 26034RRNHF1100M | ORRAN HOFSTETTER INC. (1987) | 1100 MEMORIAL DR. CHESTER , WV 26034 |
| 26175NNCRBSTATE | OSI SPECIALTIES INC. (1993) | STATE RTE. 2 P.O. BOX 180 SISTERSVILLE , WV 26175 |
| 25701WNSLL8THAV | OWENS-BROCKWAY GLASS CONTAINER INC. (1992) | 8TH AVE. & 5TH ST. W. HUNTINGTON , WV 25711 |
| 25701WNSLL8THAV | OWENS-BROCKWAY GLASS CONTAINERS (1990) | 8TH AVE. & 5TH ST. W. HUNTINGTON , WV 25711 |
| 25701WNSLL8THAV | OWENS ILLINOIS GLASS CONTAINER INC. PLT.-02 (1988) | 8TH AVE. & 5TH ST. WEST HUNTINGTON , WV 25701 |