| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Delta Oil Co Inc And Great Lakes Niagaran | Oil & Gas Operator | Dec 1987 | |
| 2 | Dominion Midwest Energy Inc | Oil & Gas Operator | Dec 2007 | |
| 3 | Dominion Natural Resources LLC | Dallas, TX 75367 | Oil & Gas Operator | Oct 2025 |
| 4 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |