| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | U-N-I Exploratio | Oil & Gas Operator | Dec 1990 | |
| 2 | U-N-I Exploration & Development, Inc. | Yates Center, KS 66783 | Oil & Gas Operator | Jan 2003 |
| 3 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |