| 15 Feb 2008 | GRANT_AWARD | PRB Gas Transportation, Inc. | 150,000 | 0.45 USD | |
| 30 Jul 2007 | PURCHASE | PRB Gas Transportation, Inc. | 500 | 2.33 USD | |
| 30 Jul 2007 | PURCHASE | PRB Gas Transportation, Inc. | 7,200 | 2.35 USD | |
| 30 Jul 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,400 | 2.28 USD | |
| 30 Jul 2007 | PURCHASE | PRB Gas Transportation, Inc. | 900 | 2.29 USD | |
| 08 Jun 2007 | PURCHASE | PRB Gas Transportation, Inc. | 10,000 | 2.48 USD | |
| 17 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 800 | 2.88 USD | |
| 17 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 2,300 | 2.87 USD | |
| 17 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 6,900 | 2.88 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,000 | 2.84 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 400 | 2.84 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 800 | 2.84 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 200 | 2.85 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,700 | 2.89 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,000 | 2.99 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 500 | 2.90 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 200 | 2.89 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,000 | 2.94 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 300 | 2.95 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,900 | 2.97 USD | |
| 04 Apr 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,000 | 2.88 USD | |
| 16 Feb 2007 | PURCHASE | PRB Gas Transportation, Inc. | 11,000 | 3.27 USD | |
| 20 Feb 2007 | PURCHASE | PRB Gas Transportation, Inc. | 4,000 | 3.20 USD | |
| 20 Feb 2007 | PURCHASE | PRB Gas Transportation, Inc. | 1,000 | 3.19 USD | |
| 19 Jan 2007 | PURCHASE | PRB Gas Transportation, Inc. | 300 | 3.00 USD | |