| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | C & D Gas Co | Apollo, PA 15613-9714 | Oil & Gas Operator | Dec 2025 |
| 2 | Casella Charles J | Avonmore, PA 15618-1028 | Oil & Gas Operator | Dec 2015 |
| 3 | Charlemagne Investment Corp | Valencia, PA 16059-0055 | Oil & Gas Operator | Dec 2007 |
| 4 | CNX Gas Company LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Dec 2025 |
| 5 | Columbia Natural Res Inc | Charleston, WV 25362-0070 | Gas Operator | Dec 2008 |
| 6 | Conerty Oil & Gas Co | Chicora, PA 16025-1823 | Oil & Gas Operator | Dec 2009 |
| 7 | Consol Gas Company | Canonsburg, PA 15317 | Oil & Gas Operator | Dec 2021 |