| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 301 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 302 | Zilkha Energy Inc | Houston, TX 77002-5223-5223 | Oil & Gas Operator | Dec 2008 |
| 303 | Zink Petroleum Corp | Uniontown, OH 44685 | Oil & Gas Operator | Dec 1993 |