| 1 | Anderman/Smith Operating Company | Shreveport, LA 71101 | Oil & Gas Operator | Jan 1999 |
| 2 | Armadillo Services Inc Of Alabama | Raymond, MS 39154 | Oil & Gas Operator | Mar 2012 |
| 3 | Artex Oil Company | Marietta, OH 45750 | Oil & Gas Operator | Jul 2018 |
| 4 | Atmos Energy Corp | Jackson, MS 39209 | Oil & Gas Operator | May 1993 |
| 5 | Browning & Welch, Inc | Jackson, MS 39216-4910 | Oil & Gas Operator | Mar 2005 |
| 6 | Continental Resources Of Illinois, Inc. | MT. Vernon, IL 62864 | Gas Operator | Dec 2012 |
| 7 | Countrymark Energy Resources L L C | Evansville, IN 47715 | Oil & Gas Operator | Nov 2017 |
| 8 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2018 |
| 9 | Energy Three, Inc. | Jackson, MS 39211 | Oil & Gas Operator | Jun 2018 |
| 10 | Ensource, Inc. | Houston, TX | Oil & Gas Operator | Feb 1990 |
| 11 | Gibraltar Energy Co | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2018 |
| 12 | Grace Petroleum Corp. | Oklahoma City, OK 73116 | Oil & Gas Operator | Mar 2007 |
| 13 | Gulf Pine Energy Operating, LLC | New Hebron, MS 39140 | Oil & Gas Operator | Jul 2018 |
| 14 | Gulf Pine Energy, L.P. | Columbus, MS 39705 | Oil & Gas Operator | Jun 2018 |
| 15 | Harkins And Co., Et Al | Jackson, MS | Oil & Gas Operator | Dec 1985 |
| 16 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jul 2018 |
| 17 | Justiss Oil Co Et Al | Jena, LA 71342 | Oil & Gas Operator | Mar 1993 |
| 18 | Mike Horton | Mantachie, MS 38855 | Oil & Gas Operator | Jul 2013 |
| 19 | Miller Exploration Company | Traverse City, MI 49684-0348 | Oil & Gas Operator | Mar 2015 |
| 20 | Missala Inc | Hamilton, MS 39746 | Oil & Gas Operator | Jul 2018 |
| 21 | Monroe Gas Storage Company, LLC | Ruston, LA 71270 | Oil & Gas Operator | Jan 2010 |
| 22 | Moon-Hines-Tigrett Operating Co., Inc. | Ridgeland, MS 39157 | Oil & Gas Operator | Jul 2018 |
| 23 | Munoco Company L. C. | El Dorado, AR 71730 | Oil & Gas Operator | Feb 2010 |
| 24 | Nason Production Co., Inc | Aberdeen, MS 39730 | Oil & Gas Operator | Dec 2007 |
| 25 | Nason, Howard G. | Aberdeen, MS 39730 | Oil & Gas Operator | Feb 2000 |
| 26 | Nason, Howard J. | Aberdeen, MS 39730 | Oil & Gas Operator | Oct 1994 |
| 27 | North MS Gas Storage Co., LLC | Jackson, MS 39205-0919 | Oil & Gas Operator | Aug 2000 |
| 28 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 29 | Parks Exploration | Houston, MS 38851 | Gas Operator | Jul 2018 |
| 30 | Petro Harvester Operating Company, LLC | Laurel, MS 39440 | Oil & Gas Operator | Aug 2018 |
| 31 | Philpot & Smith | Houston, MS 38851 | Oil Operator | Mar 1992 |
| 32 | Providence Operating LLC | | Oil & Gas Operator | Jul 2018 |
| 33 | Pruet Prod. Co. Et Al | Jackson, MS | Oil & Gas Operator | Feb 1989 |
| 34 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Jul 2018 |
| 35 | RDB Inc | Aberdeen, MS 39730 | Oil & Gas Operator | Sep 1984 |
| 36 | Recon Operating Inc | Nacogdoches, TX 75965-2955 | Oil & Gas Operator | Nov 1992 |
| 37 | S. Lavon Evans Jr Inc, Et Al | Laurel, MS 39442 | Oil & Gas Operator | Feb 2012 |
| 38 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2018 |
| 39 | Sierra Prod. Co. And | Jackson, MS 39201 | Oil & Gas Operator | Apr 1991 |
| 40 | Southern Natural Gas Co, LLC | Birmingham, AL 35202 | Oil & Gas Operator | Jun 1994 |
| 41 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Jun 2008 |
| 42 | T. K. Stanley, Inc. | Waynesboro, MS 39367 | Oil & Gas Operator | Jul 2009 |
| 43 | Tarpon Whitetail Gas Storage, LLC | Houston, TX 77042 | Oil & Gas Operator | Jan 2012 |
| 44 | Thompson Services Inc | Hamilton, MS 39746 | Oil & Gas Operator | Jul 2018 |
| 45 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Nov 2015 |
| 46 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Feb 2015 |
| 47 | Vernon E. Faulconer, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Aug 2018 |
| 48 | Vision Operating Co | Jackson, MS 39201 | Gas Operator | Sep 1990 |
| 49 | Whitley Operating Oil And Gas | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 1998 |