| Business | Phone |
| Magnum Energy Inc 2806 Broce Dr, Norman 73072 | (405) 360-2784 |
| Maier Energy 2233 W Lindsey St, Norman 73069 | (405) 364-8141 |
| Maier Energy 330 W Gray St, Norman 73069 | (405) 364-8141 |
| Loftis Energy Inc 2400 Oak Forest Dr, Norman 73071 | (405) 447-6428 |