| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Mack Oil Corp | Oil & Gas Operator | Nov 1998 | |
| 2 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 3 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 4 | Michigan Oil Co. | FT Worth, TX 76117 | Oil & Gas Operator | Feb 1998 |
| 5 | Michigan Petroleum Exploration Inc | Oil & Gas Operator | Oct 2005 | |
| 6 | Miller Brothers | Oil & Gas Operator | Nov 2000 | |
| 7 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Apr 2024 |
| 8 | Muskegon Operating Company LLC | Oil & Gas Operator | Mar 2024 | |
| 9 | Muzyl Oil Corp | Gas Operator | Mar 2024 |