| Shares Underlying Warrants Outstanding | ||||
| Range of Exercise Price | Shares Underlying \Warrants Outstanding | Weighted Average Remaining Contractual Life | Weighted Average | |
|
| Exercise Price | |||
| $0.50 - $0.60 | 1,432,000 Shares \ 1,832,000 Warrants | 1.53 years | $ 0.46 | |
The following table is a summary of activity of outstanding stock warrants:
| Number of Warrants | Weighted Average Exercise Price | |
| Balance, August 31, 2012 | 5,357,206 | 0.58 |
| Warrants expired | (4,525,206) | 0 |
| Warrants cancelled | - | 0 |
| Warrants Granted | 1,000,000 | 0.42 |
| Warrants exercised | - | 0 |
| Balance, August 31, 2013 | 1,832,000 | 0.46 |