| Ananda Energy Inc. |
020573 |
| Barker Production Co., LP |
049453 |
| Caprock Engineering, Inc. |
130477 |
| Darrah Oil Company L.L.C. |
200848 |
| Hagler Oil & Gas Company |
342764 |
| Harvard Petroleum Company, LLC |
363060 |
| Lionheart Energy Corporation |
501830 |
| McDowell Ranch |
548192 |
| O'Ryan Oil And Gas |
617042 |
| Questa Energy Corporation |
684634 |
| Questa Operating Company, LLC |
684641 |
| Reneau, James Seed Co. |
701747 |
| Reneau Oil Co. |
701746 |
| Scout Energy Management LLC |
760218 |
| Shamrock Texas Partners L.P. |
769125 |
| Sidwell Operating Company, L.P. |
780000 |
| SLT Dakota Operating, Inc. |
740337 |
| Stine-Hawkins |
821850 |
| Supa Energy, Inc. |
830245 |
| Wischkaemper, James K. |
932957 |
| Wischkaemper, Kenneth |
932970 |