| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Union Oil Co | Danville, OH 43014 | Oil & Gas Operator | Dec 2014 |
| 2 | United O&G/Atlee Miller | Millersburg, OH 44654 | Oil & Gas Operator | Dec 1985 |
| 3 | Unity Petroleum | Howard, OH 43028 | Oil & Gas Operator | Dec 2021 |
| 4 | Unknown Owner | Columbus, OH 43229 | Oil & Gas Operator | Dec 2008 |