| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Mark Resources Corp | Pittsburgh, PA 15276 | Oil & Gas Operator | Dec 1993 |
| 2 | McComb Oil Inc | Stoneboro, PA 16153-3017 | Oil & Gas Operator | Dec 2023 |
| 3 | Millennium Oil & Gas Inc | Dexter, KS 67038 | Oil & Gas Operator | Dec 2023 |
| 4 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |