| Business | Phone |
| Caza Equipment Yard 2100 7 Mile Rd, Casper 82604 | (307) 234-2299 |
| Elenburg Exploration Inc 1910 N Loop Ave, Casper 82601 | (307) 235-8609 |
| Fuller Petroleum Consulting 6672 Coal Rd, Casper 82604 | (307) 472-0988 |
| Grey Wolf Drilling Co 2136 Oil Dr, Casper 82604 | (307) 266-9861 |
| Nabors Drilling Usa 6500 W Zero Rd, Casper 82604 | (307) 472-4097 |
| Unit Drilling Co 2087 Piney Creek Rd, Casper 82604 | (307) 266-2428 |
| Sperry Drilling Svc/Halliburtn 7197 W Derick Dr, Casper 82604 | (307) 473-2332 |
| Sst Energy Corp 8901 W Yellowstne Hwy, Casper 82604 | (307) 235-3529 |
| Unit Drilling Co 5710 W Yellowstne Hwy, Casper 82604 | (307) 472-7020 |