| 1 | M & M Oil & Gas Exploration Inc | Abilene, TX 79601 | Oil & Gas Operator | Mar 2008 |
| 2 | M H W, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Jul 1996 |
| 3 | M. E. Operating & Services, Inc. | Fort Worth, TX 76104 | Oil & Gas Operator | Apr 2024 |
| 4 | M. Grace, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Apr 2024 |
| 5 | Magna Diversified Group, Inc. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2013 |
| 6 | Magnet Oil LP | Bronte, TX 76933 | Oil & Gas Operator | Apr 2024 |
| 7 | Marchman, J. E. | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 8 | Marjac Oil Company, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2024 |
| 9 | Marrow, N. S. | Austin, TX 78703 | Oil & Gas Operator | Aug 2012 |
| 10 | Masada Oil & Gas Company LTD. | Abilene, TX 79603 | Oil & Gas Operator | Apr 2024 |
| 11 | McClymond, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2001 |
| 12 | McClymond, LTD. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2009 |
| 13 | McIver, Inc | San Angelo, TX 76903 | Oil & Gas Operator | Apr 2024 |
| 14 | McMoran Oil & Gas LLC | New Orleans, LA 70160 | Oil & Gas Operator | Oct 2021 |
| 15 | McNallen Oil Co., Inc. | Keller, TX 76244 | Oil & Gas Operator | Apr 2024 |
| 16 | Meco IV, LLC | Lakewood, CO 80227 | Oil & Gas Operator | Jul 2021 |
| 17 | Mehaffey Investments, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2024 |
| 18 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 19 | Merenco | Midland, TX 79702 | Oil & Gas Operator | Dec 1996 |
| 20 | Merimac Investments, Inc. | Fort Worth, TX 76109 | Oil & Gas Operator | Jan 1997 |
| 21 | Mesa Energy, Inc. | Austin, TX 78755 | Oil & Gas Operator | Dec 2013 |
| 22 | Mid-Tex Energy Inc. | Costa Mesa, CA 92626 | Oil & Gas Operator | Jan 1999 |
| 23 | Midsco | Cross Plains, TX 76443 | Oil & Gas Operator | Apr 2024 |
| 24 | Miles Production Co. | Argyle, TX 76226 | Oil & Gas Operator | Mar 2008 |
| 25 | Miller Operating Company LLC | Lafayette, LA 70598 | Oil & Gas Operator | Apr 2024 |
| 26 | Miller, Donny | Cisco, TX 76437 | Oil & Gas Operator | Apr 2024 |
| 27 | Mineral Technologies, Inc. | Midland, TX 79704 | Oil & Gas Operator | Apr 2024 |
| 28 | Mingus Oil & Gas | Mingus, TX 76463 | Oil & Gas Operator | Apr 2024 |
| 29 | Minuteman Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Feb 2015 |
| 30 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 31 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 32 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 33 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Apr 2024 |
| 34 | MKS Consulting Corporation | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2005 |
| 35 | MKS Natural Gas Company | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2016 |
| 36 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Apr 2024 |
| 37 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 38 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
| 39 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Apr 2024 |
| 40 | Mogul Resources, LLC | Ranger, TX 76470 | Oil & Gas Operator | Apr 2024 |
| 41 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Apr 2024 |
| 42 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 43 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 44 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2024 |
| 45 | Morrell, W. R. | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 46 | Morris R. Greenhaw Oil&Gas, Inc | Desdemona, TX 76445 | Oil & Gas Operator | Apr 2024 |
| 47 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | Apr 2024 |
| 48 | Moylan, Jimmie C. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2024 |
| 49 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 50 | MWS Producing, Inc. | Stanton, TX 79782 | Oil & Gas Operator | Apr 2024 |