| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Halde Oil Inc | Oil & Gas Operator | Jul 2025 | |
| 2 | Helena Resources Inc | Lakewood, CO 80215 | Oil & Gas Operator | Jul 2025 |
| 3 | High Plains Energy LLC | Oil & Gas Operator | May 2017 | |
| 4 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |