| Business | Phone |
| Hite Operating Co Inc 1112 S Villa Dr, Evansville 47714 | (812) 479-8946 |
| Hopper Exploration Inc Evansville 47720 | (812) 963-9431 |
| Orion Petro Corp 101 Plaza East Blvd # 101, Evansville 47715 | (812) 479-0853 |
| Mannon L Walters Inc 6015 Heckel Rd, Evansville 47725 | (812) 867-5956 |
| Mid-Central Land & Exploration 5011 Washington Ave, Evansville 47715 | (812) 476-9393 |