| A | Amendment | M | Marked Up | |
| E | Engrossment | $ | Fiscal Note | |
| HJ | House Journal | SJ | Senate Journal |
| Date | Day | Committee | |
|---|---|---|---|
| 01/21/2011 | 13 | Senate Natural Resources | |
| 02/10/2011 | 27 | Senate Natural Resources | |
| 02/11/2011 | 28 | Senate Natural Resources | |
| 03/15/2011 | 46 | House Industry, Business and Labor | |
| 03/29/2011 | 56 | House Industry, Business and Labor | |
| 04/07/2011 | 63 | Conference Committee |