| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | National Treasure Mines | San Marina, CA 91118 | Oil Operator | Dec 1998 |
| 2 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Mar 2024 |
| 3 | Nepeco | Byron, WY 82412 | Oil Operator | Feb 2024 |
| 4 | New Era Petroleum Inc | Sheridan, WY 82801 | Oil Operator | Feb 2024 |
| 5 | Newman Bros Drilling | Oil & Gas Operator | Apr 2004 | |
| 6 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 7 | Nielson Capital Partners LLC | Cody, WY 82414 | Oil & Gas Operator | Dec 2014 |
| 8 | Nor-Am Exploration | Oil Operator | Jun 1981 |