| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 601 | Cyanostar Energy Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Feb 1999 |
| 602 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Aug 2025 |
| 603 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |