| 19301 | Mineral Development, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1996 |
| 19302 | Mineral Resource Management, L.L.C. | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 2021 |
| 19303 | Mineral Resources & Engineering | Aladdin, WY 82710 | Oil Operator | Jul 1991 |
| 19304 | Mineral Resources, Incorporated | Lewisville, TX 75029 | Oil & Gas Operator | Oct 2025 |
| 19305 | Mineral Technologies, Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 19306 | Mineral Ventures, Inc. | | Oil & Gas Operator | Dec 2024 |
| 19307 | Minerals MGMT Group, Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2020 |
| 19308 | Minerex Engineering Corp. | | Oil & Gas Operator | Mar 2004 |
| 19309 | Minerva Oil Company | Tulsa, OK 74152-0858 | Oil & Gas Operator | Mar 2015 |
| 19310 | Minexprod LLC | Katy, TX 77494 | Oil Operator | Oct 2025 |
| 19311 | Mingo Oil Producers | Salt Lake City, UT 84111 | Oil & Gas Operator | Nov 1987 |
| 19312 | Mingus Oil & Gas | Mingus, TX 76463 | Oil & Gas Operator | Oct 2025 |
| 19313 | Minihan Oil & Gas Corporation | Midland, TX 79704 | Oil & Gas Operator | Apr 2004 |
| 19314 | Minihan Oil & Gas LTD. | Denver, CO 80202 | Oil & Gas Operator | Jul 2006 |
| 19315 | Minihan Oil And Gas Company | Seminole, OK 74868-9790 | Oil & Gas Operator | Sep 2014 |
| 19316 | Minihan Production Co | Seminole, OK 74868 | Oil & Gas Operator | Jan 1997 |
| 19317 | Mink Oil Company | | Oil Operator | Nov 2003 |
| 19318 | Mink, Jay, Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Aug 2017 |
| 19319 | Minnelusa Oil LLC | Temecula, CA 92589 | Oil Operator | Feb 2002 |
| 19320 | Minner Oil Field Service | | Oil Operator | Jul 2008 |
| 19321 | Minor Jr W T | Wichita Falls, TX 76307 | Oil Operator | Nov 1998 |
| 19322 | Minor Mark | FT Worth, TX 76116-1003 | Oil Operator | Nov 2015 |
| 19323 | Minteer & Baker Gas Enterprise | Worthington, PA 16262-0739 | Gas Operator | Dec 2024 |
| 19324 | Minter Lee M | Bradford, PA 16701-3763 | Gas Operator | Dec 1991 |
| 19325 | Minuja Oil And Gas LLC | Corpus Christi, TX 78401 | Oil & Gas Operator | Sep 1996 |
| 19326 | Minute Hand LLC | Brenham, TX 77834 | Oil & Gas Operator | Oct 2025 |
| 19327 | Minuteman Drilling | | Gas Operator | Dec 2021 |
| 19328 | Minuteman Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Feb 2015 |
| 19329 | Minyak Producing Company, Inc. | Sabine Pass, TX 77655 | Oil & Gas Operator | Oct 2025 |
| 19330 | Miocene Oil & Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jul 1998 |
| 19331 | Miocene Oil & Gas, LTD. | Englewood, CO 80110 | Oil & Gas Operator | Oct 2025 |
| 19332 | Mir-Tex Energy Corp. | Mirando City, TX 78369 | Oil & Gas Operator | Aug 2003 |
| 19333 | Miracle Petroleum LLC | | Oil & Gas Operator | Oct 2018 |
| 19334 | Miracle Production Inc | Yukon, OK 73085-0680 | Oil & Gas Operator | Jun 2007 |
| 19335 | Mirage Energy Inc | Eunice, NM 88231 | Oil & Gas Operator | Apr 2011 |
| 19336 | Miramar Petroleum, Inc. | Corpus Chrsti, TX 78463 | Oil & Gas Operator | Sep 2017 |
| 19337 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 19338 | Mirando Crude Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jul 1994 |
| 19339 | Mirando Resource, L.L.C. | Freer, TX 78357 | Oil & Gas Operator | Oct 2025 |
| 19340 | Miresco, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jan 1995 |
| 19341 | Misahar Investments | Evergreen, CO 80439 | Oil Operator | Dec 1992 |
| 19342 | Misc Oil Co | Oilmont, MT 59466 | Oil Operator | Jul 2025 |
| 19343 | Misener Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2010 |
| 19344 | Mishler Oil | | Oil Operator | May 1989 |
| 19345 | Miss Basin Oil & Gas Company | | Oil Operator | Jan 1985 |
| 19346 | Miss Chub LLC | | Gas Operator | Dec 2024 |
| 19347 | Miss Lou Oil Producers, Inc. | | Oil & Gas Operator | Dec 1998 |
| 19348 | Miss-Lou Operating LLC | | Oil & Gas Operator | Jul 2025 |
| 19349 | Miss-Lou Petroleum LLC | | Oil & Gas Operator | Jun 2011 |
| 19350 | Missala Inc | | Oil & Gas Operator | Dec 1995 |
| 19351 | Missaukee Oil And Gas Company LLC | | Oil & Gas Operator | Jun 2025 |
| 19352 | Missing Moon Oil Inc | Knox, PA 16232-4507 | Oil & Gas Operator | Dec 2024 |
| 19353 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 19354 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 19355 | Mission Exploration, Inc. | Fate, TX 75132 | Oil & Gas Operator | Dec 1987 |
| 19356 | Mission Leasing LTD | Tulsa, OK 74136 | Oil Operator | Dec 2000 |
| 19357 | Mission Oil & Gas | Pawhuska, OK 74056 | Oil Operator | May 2013 |
| 19358 | Mission Oil Company | | Oil & Gas Operator | Jul 2025 |
| 19359 | Mission Resources | | Oil & Gas Operator | Dec 1991 |
| 19360 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 19361 | Mission River Systems, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Oct 2025 |
| 19362 | Mississippi Resources, LLC Dba MSR Operating, LLC | | Oil & Gas Operator | May 2021 |
| 19363 | Mississippi River Transm. Corp | | Oil & Gas Operator | Sep 2002 |
| 19364 | Mississippi Valley Gas Co | | Oil & Gas Operator | Aug 1984 |
| 19365 | Mississippi Ventures | | Gas Operator | Feb 1992 |
| 19366 | Mississippi Ventures, Inc. | Granbury, TX 76048 | Gas Operator | Jul 1997 |
| 19367 | Missouri Basin Well Service, Inc. | Belfield, ND 58622 | Oil & Gas Operator | Jan 2018 |
| 19368 | Missouri Breaks, LLC | | Oil & Gas Operator | Jun 2011 |
| 19369 | Missouri River R | | Gas Operator | Jun 1993 |
| 19370 | Missouri River Resources ND, LLC | | Oil & Gas Operator | Aug 2025 |
| 19371 | Missouri River Royalty Corporation | Bismarck, ND 58504 | Oil & Gas Operator | Aug 2025 |
| 19372 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 19373 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Oct 2025 |
| 19374 | Mitch Well Energy Inc | Waterford, PA 16441-8143 | Oil & Gas Operator | Dec 2012 |
| 19375 | Mitchell And R. E. Mitchel | | Oil Operator | Feb 2000 |
| 19376 | Mitchell Cecil D | Haskell, OK 74436-7667 | Oil & Gas Operator | Apr 2020 |
| 19377 | Mitchell Drilling Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19378 | Mitchell Ehrlich Oil & Gas, LLC | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 19379 | Mitchell Energy | | Oil & Gas Operator | Dec 1996 |
| 19380 | Mitchell Energy & Goodrich Oil | | Oil & Gas Operator | Feb 1985 |
| 19381 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 19382 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 19383 | Mitchell James D | Bartlesville, OK 74006-7610 | Oil Operator | Jun 2025 |
| 19384 | Mitchell M J | | Oil & Gas Operator | Jan 1983 |
| 19385 | Mitchell Martha | Henryetta, OK 74437-0488 | Oil & Gas Operator | Apr 2011 |
| 19386 | Mitchell Oil | | Oil Operator | Jul 2025 |
| 19387 | Mitchell Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 19388 | Mitchell Resources, Inc. | Addison, TX 75001 | Oil & Gas Operator | Aug 2003 |
| 19389 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 19390 | Mitchell, James - Operator | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2008 |
| 19391 | Mitchell-Grossu Oil Co. | | Oil & Gas Operator | Sep 2023 |
| 19392 | Mitchwil Investments LLC | | Oil & Gas Operator | Dec 2019 |
| 19393 | Miti-Mini Inc | Wetumka, OK 74883-6172 | Gas Operator | Jul 2016 |
| 19394 | Mito Resources LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 19395 | Mito Resources TX LLC | Edmond, OK 73013 | Oil & Gas Operator | Oct 2025 |
| 19396 | Mitsui E&P USA LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 19397 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 19398 | Miura Petroleum, Inc. | Topeka, KS 66603 | Oil & Gas Operator | May 2006 |
| 19399 | Miway Operations | Russell, KS 67665 | Oil Operator | Aug 1994 |
| 19400 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Oct 2025 |