| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | M & R Investments Ohio LLC | Birmingham, AL 35238 | Oil & Gas Operator | Dec 2019 |
| 2 | Mark Resources Corp | Pittsburgh, PA 15276 | Oil & Gas Operator | Dec 1993 |
| 3 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 4 | Mihalik Paul | Madison, OH 44057 | Oil & Gas Operator | Dec 2023 |
| 5 | Milner Lake Energy LLC | Madison, OH 44057 | Oil & Gas Operator | Dec 2024 |
| 6 | Moreland Oil & Gas Inc | Dennison, OH 44621 | Oil & Gas Operator | Dec 1990 |
| 7 | Murtha Contracting Inc. | Conneaut, OH 44030 | Oil & Gas Operator | Dec 2009 |
| 8 | Mutual Oil & Gas Co | Akron, OH 44311 | Oil & Gas Operator | Dec 2001 |