| 1 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2018 |
| 2 | A & W Drilling Co. | Waynesboro, MS 39367 | Oil Operator | Sep 1985 |
| 3 | A.D.A. Oil Co | Houston, TX | Oil Operator | Aug 2003 |
| 4 | Ada Oil Exploration Corp | | Oil & Gas Operator | Feb 1986 |
| 5 | Adams Resources Expl. Corp. | Houston, TX 77001 | Oil & Gas Operator | Jan 2018 |
| 6 | Adco Producing Co. | Natchez, MS 39120 | Oil & Gas Operator | Mar 1989 |
| 7 | Aegis Operating Co., Inc. | Puckett, MS 39151 | Oil & Gas Operator | Feb 2018 |
| 8 | Ainsworth, Otis | Taylorsville, MS | Oil & Gas Operator | Jun 1987 |
| 9 | Alamosa Operating Company | Fort Worth, TX 76102-430 | Oil & Gas Operator | May 2018 |
| 10 | Albert E. Smith Oil | Prairie, MS 39756 | Oil Operator | Feb 2018 |
| 11 | Albert M. Stall | New Orleans, LA | Oil Operator | Dec 1990 |
| 12 | Aldridge Operating Co., LLC | Natchez, MS 39121 | Oil & Gas Operator | Jan 2018 |
| 13 | Alex Oil Co. | Natchez, MS 39120 | Oil Operator | Jun 1996 |
| 14 | Allen Operating Company, LLC | Natchez, MS 39121 | Oil & Gas Operator | Feb 2018 |
| 15 | Allen Petroleum Services Inc. | Natchez, MS 39121 | Gas Operator | Aug 2000 |
| 16 | Allstar Oil And Gas Inc. | Tickfaw, LA 70466 | Oil & Gas Operator | Nov 1992 |
| 17 | Alpine Gas Operator, LLC | Dallas, TX 75201 | Oil & Gas Operator | Feb 2018 |
| 18 | Alpine Well Service, Inc. | Natchez, MS 39121 | Oil & Gas Operator | Feb 2018 |
| 19 | Amax Petroluem Corp. | Laurel, MS | Oil & Gas Operator | Nov 1983 |
| 20 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Feb 2016 |
| 21 | American Exploration Company | Houston, TX 77010-3088 | Oil & Gas Operator | Jan 2000 |
| 22 | American Quasar Petroleum Co. | Jackson, MS | Oil & Gas Operator | Jun 1987 |
| 23 | American Southwest Corp. | Jackson, MS | Oil & Gas Operator | Nov 1989 |
| 24 | Amoco Production Co. | Tulsa, OK 74102-0591 | Oil & Gas Operator | Jun 2015 |
| 25 | Amwar Expl. & Allen Petroleum | Natchez, MS 39121 | Oil & Gas Operator | Feb 2018 |
| 26 | Anadarko Petroleum Corporation | Houston, TX 77251-1330 | Oil & Gas Operator | Jan 2018 |
| 27 | Anderman/Smith Operating Company | Shreveport, LA 71101 | Oil & Gas Operator | Jan 1999 |
| 28 | Anderson Oil Company | Washington, MS 39190 | Oil & Gas Operator | Oct 2015 |
| 29 | Anderson Operating, LLC | Washington, MS 39190 | Oil & Gas Operator | Feb 2018 |
| 30 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Sep 2017 |
| 31 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | May 2018 |
| 32 | Arkla Exploration Co. | Shreveport, LA 71151 | Oil & Gas Operator | Sep 2006 |
| 33 | Armadillo Services Inc Of Alabama | Raymond, MS 39154 | Oil & Gas Operator | Mar 2012 |
| 34 | Array Operating, LLC | Vidalia, LA 71373 | Oil & Gas Operator | Mar 2017 |
| 35 | Artex Oil Company | Marietta, OH 45750 | Oil & Gas Operator | Feb 2018 |
| 36 | Atmos Energy Corp | Jackson, MS 39209 | Oil & Gas Operator | May 1993 |
| 37 | Austin Production Company, Inc. | Bolton, MS 39041 | Oil & Gas Operator | Apr 2009 |
| 38 | Australis TMS Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2018 |
| 39 | Aviara Energy Corporation | Houston, TX 77251 | Oil & Gas Operator | May 2013 |
| 40 | Axis Onshore, LP | | Oil & Gas Operator | Dec 2010 |
| 41 | B & B Oil Well Service Company, Inc | Laurel, MS 39443 | Oil & Gas Operator | Feb 2018 |
| 42 | B & M Resources, Inc. | Natchez, MS 39121 | Oil Operator | Apr 1997 |
| 43 | B & W Exploration, Inc. | Natchez, MS 39121 | Oil & Gas Operator | Dec 2000 |
| 44 | B. H. T. Production, LLC | Natchez, MS 39122 | Oil & Gas Operator | Apr 2010 |
| 45 | Backwater Energy Partners, LLC | Magnolia, TX 77354 | Oil & Gas Operator | Feb 2018 |
| 46 | Bailey, S. H. | Natchez, MS 39120 | Oil & Gas Operator | Jul 1995 |
| 47 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | May 2018 |
| 48 | Bass Enterprises Production Co | Metairie, LA 70002 | Oil & Gas Operator | Jun 2012 |
| 49 | Bean Resources, Inc | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2018 |
| 50 | Beard Oil Company | Natchez, MS 39121 | Oil & Gas Operator | Aug 2015 |
| 51 | Belden & Blake | Gilbertown, AL 36908 | Oil & Gas Operator | Feb 1988 |
| 52 | Belle Oil, Inc. | Natchez, MS 39121 | Oil & Gas Operator | Feb 2018 |
| 53 | Bellway, LLC. | Georgetown, MS 39078 | Oil Operator | Feb 2018 |
| 54 | Betsy Production Company, Inc. | Magnolia, AR 71753 | Oil & Gas Operator | Mar 2018 |
| 55 | Big River Oilfield Services, LLC | Vidalia, LA 71373 | Oil & Gas Operator | Feb 2018 |
| 56 | Big Run Production Company | Tyler, TX 75701 | Oil & Gas Operator | May 2018 |
| 57 | Big-Joe Operating, Co. | Natchez, MS 39120 | Oil & Gas Operator | Feb 2018 |
| 58 | Biglane Operating Company | Natchez, MS 39121 | Oil & Gas Operator | Mar 2018 |
| 59 | Billups Brothers Et Al | Rayne, LA | Oil & Gas Operator | Dec 1981 |
| 60 | Black Gold Prod Co., Inc. | Tickfaw, LA 70466-9734 | Oil & Gas Operator | Feb 1998 |
| 61 | Black Horse Resources, LLC | Yazoo City, MS 39194 | Oil Operator | Feb 2018 |
| 62 | Black Jack Oil Co Inc | Sibley, MS 39165 | Oil & Gas Operator | Feb 2018 |
| 63 | Blackburn Operating Co., Inc. | Jackson, MS 39225-2864 | Oil & Gas Operator | Jun 2008 |
| 64 | Block "T" Petroleum, Inc. | Tyler, TX 75710-2080 | Oil & Gas Operator | May 2018 |
| 65 | Blue Valley Petroleum, LTD. | El Dorado, AR 71730 | Oil Operator | Jun 1991 |
| 66 | Bluff City Pipe & Supply Co. | Natchez, MS 39122 | Oil Operator | Jan 1987 |
| 67 | Bob Bertolet | Natchez, MS 39121 | Oil & Gas Operator | Feb 2018 |
| 68 | Bob Bertolet Et Al | Natchez, MS 39121 | Oil Operator | Apr 2013 |
| 69 | Bogue Homa Oil Production LLC | Sandersville, MS 39477 | Oil & Gas Operator | Feb 2018 |
| 70 | BPS Operating Services LLC | Jackson, MS 39236 | Oil & Gas Operator | Nov 2016 |
| 71 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2018 |
| 72 | Breland, Leon | Natchez, MS 39120 | Oil & Gas Operator | Feb 1991 |
| 73 | Briggs Operating Co | Dallas, TX 75374-3486 | Oil & Gas Operator | Nov 1998 |
| 74 | Brighton Energy, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 75 | Bristol Resources Co. | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1989 |
| 76 | Broadhead & Stack | Meridian, MS | Oil Operator | Jan 2000 |
| 77 | Broadway Energy | Dallas, TX 75206 | Oil Operator | Apr 1983 |
| 78 | Brown, Edward L. | Fayetteville, AK | Oil Operator | Sep 1980 |
| 79 | Browning & Welch, Inc | Jackson, MS 39216-4910 | Oil & Gas Operator | Mar 2005 |
| 80 | Bruxoil, Inc. | Jackson, MS 39236 | Oil & Gas Operator | Feb 2018 |
| 81 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2018 |
| 82 | Buffco Production Inc | Longview, TX 75606 | Oil & Gas Operator | May 2018 |
| 83 | Bulldog Operating Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2016 |
| 84 | Burks Energy, LLC | Delphi, IN 46923 | Oil Operator | Feb 2018 |
| 85 | Burnsed Oil Co., Inc. | Natchez, MS 39121 | Oil & Gas Operator | Feb 2018 |
| 86 | Caledonia Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Mar 2007 |
| 87 | Callon Oil Co, Cambell | Vidalia, LA 71373 | Oil & Gas Operator | Oct 1984 |
| 88 | Callon Petroleum Co. | Natchez, MS 39120 | Oil & Gas Operator | Oct 2002 |
| 89 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2002 |
| 90 | Calto Oil Co. Et Al | Dallas, TX | Oil Operator | Feb 1991 |
| 91 | Calto Operating Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2004 |
| 92 | Cameron L. Cox Production | Houston, TX 77069 | Oil Operator | Jun 1985 |
| 93 | Campbell Co. Et Al | Vidalia, LA | Oil Operator | Apr 1986 |
| 94 | Camterra Resources, Inc. | Marshall, TX 75671-2069 | Oil & Gas Operator | May 2018 |
| 95 | Capstone Resources, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Feb 1986 |
| 96 | Cardneaux Inc | Natchez, MS 39122 | Oil & Gas Operator | Feb 2017 |
| 97 | Cardneaux, C. A. & Hudnall | Natchez, MS 39122 | Oil Operator | Jan 2000 |
| 98 | Cardneaux, C. A. & Hudnall & Weco | Natchez, MS 39122 | Oil Operator | Jun 1991 |
| 99 | Carl E. Gungoll Exploration LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2018 |
| 100 | Castor Exploration, Inc. | Natchez, MS 39120 | Oil & Gas Operator | Dec 1991 |