| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D&D Energy Company | N.Canton, OH 44721 | Oil & Gas Operator | Dec 2020 |
| 2 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | May 2026 |
| 3 | Dover Atwood Corp. | Massillon, OH 44646 | Oil & Gas Operator | Dec 2025 |
| 4 | Dupke Roger Oil Co Inc | Reno, OH 45773 | Oil & Gas Operator | Dec 2004 |