| Company Name: |
Location: |
| Aloe Coal Company | Imperial, PA |
| American Electric Power Company | Beach Bottom, VV |
| Bureau of Mines | Bruceton, PA |
| Carlin Gold Mining Company | Carlin, NV |
| Consolidation Coal Company | Blacksville, WV |
| | Granville, WV |
| | Moundsville, WV |
| | Osage, WV |
| | Powhattan, OH |
| | Wana, WV |
| Custom Coal, Inc | Central City, PA |
| Custom Coals International | Somerset, PA |
| Eastern Associated Coal Company | Keystone, WV |
| | Wharton, WV |
| Eastern Coal Company | McAndrews, KY |
| Energy West Mining Company | Castle Dale, UT |
| FMC Wyoming | Green River, WY |
| Inland Steel Mining Company | McLeansboro, IL |
| | Minorca, MN |
| Jones & Laughlin Steel Corp | Waynesburg, PA |
| Kennecott Utah Copper Corp | Bingham Canyon, UT |
| Labelle Processing Company | Labelle, PA |
| Leslie Mining Company | Sidney, KY |
| Magma Nevada Mining Company | Ely, NV |
| Marrowbone Development Company | Kermit, WV |
| Newmont Gold | Carlin, NV |
| Old Ben Coal Company | West Frankfort, IL |
| Omar Mining Company | Madison, WV |
| Peabody Coal Company | Meta, KY |
| Pyro Mining Company | Sturgis, KY |
| Ranger Fuel Corporation | Sabine, WV |
| Rochester & Pittsburgh Coal Company | Homer City, PA |
| Shannopin Mining Company | Bobtown, PA |
| U.S.Steel Mining Company Inc | Kirby, PA |
| | New Eagle, PA |
| | Waynesburg, PA |
| Ziegler Coal Company | Murdock, IL |
