| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hanson Natural Resources Co. | Oil & Gas Operator | Nov 1991 | |
| 2 | Hogan Exploration, Inc. | Oil & Gas Operator | Mar 2000 | |
| 3 | Houston Oil Fields Company | Oil & Gas Operator | Apr 1987 | |
| 4 | Hyco Oil Inc | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2006 |