| Business | Phone |
| Foundation Coal West Inc 2273 Bishop Rd, Gillette 82718 | (307) 687-3200 |
| Kiewit Mining Group Inc 9543 N Us Highway 14-16, Gillette 82716 | (307) 682-9144 |
| Western Fuels Wyoming Inc Dry 3629 N Garner Lake Rd, Gillette 82716 | (307) 682-2839 |
| Powder River Coal Co 12433 State Highway 59 N, Gillette 82716 | (307) 682-8081 |
| Powder River Coal Co 2298 Bishop Rd, Gillette 82718 | (307) 686-1991 |
| Powder River Coal Co 1013 E Boxelder Rd, Gillette 82718 | (307) 687-3900 |