| 1 | Berea Oil & Gas Corp | Buffalo, NY 14202 | Oil & Gas Operator | Dec 2002 |
| 2 | Berry Energy, Inc. | Clarksburg, WV 26301-2252 | Oil & Gas Operator | Dec 2021 |
| 3 | Big Sand Drilling Company | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 4 | Blackrock Enterprises, LLC | Salem, WV 26426 | Oil & Gas Operator | Dec 2021 |
| 5 | Blazer Energy Corp. | Alexandria, VA 22314 | Oil & Gas Operator | Dec 2014 |
| 6 | Chesapeake Appalachia LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2024 |
| 7 | CNG Producing Company | New Orleans, LA 70112 | Oil & Gas Operator | Dec 2015 |
| 8 | Columbia Natural Resources, LLC | Charleston, WV 23502 | Oil & Gas Operator | Dec 2021 |
| 9 | Dominion Energy Transmission, Inc. | | Oil & Gas Operator | Dec 2019 |
| 10 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 11 | Dri Operating Company | West Chester, PA 19382-0000 | Gas Operator | Dec 2008 |
| 12 | Engler, Inc. | Harlingen, TX 78552-0000 | Gas Operator | Dec 2020 |
| 13 | Hope Gas, Inc. | Richmond, VA 23261 | Oil & Gas Operator | Dec 2010 |
| 14 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 15 | K. Petroleum, Inc. | Gahanna, OH 43230 | Oil & Gas Operator | Sep 2024 |
| 16 | Megaenergy Operating, Inc. | Edmond, OK 73034 | Oil & Gas Operator | Jul 2015 |
| 17 | Pillar Energy, LLC | Charleston, WV 25312-5987-5987 | Oil & Gas Operator | Dec 2023 |
| 18 | Ran Resources, Inc. | Beverly, WV 26253 | Gas Operator | Dec 2021 |
| 19 | Saga Petroleum LLC Of Colorado | Norman, OK 73072 | Oil & Gas Operator | Nov 2024 |
| 20 | T & F Exploration, LP | Pittsburgh, PA 15241-1375 | Oil & Gas Operator | Oct 2023 |