| Number of Warrants | Weighted Average Exercise Price | Expiry Dates | |||||||
| Warrants at April 30, 2011 | - | $ | - | n/a | |||||
| Granted | 2,145,961 | $ | 1.00 | February 2017 to March 2017 | |||||
| Expired | - | $ | - | n/a | |||||
| Warrants at April 30, 2012 | 2,145,961 | $ | 1.00 | February 2017 to March 2017 | |||||
| Granted | 4,420,833 | $ | 1.08 | April 2017 to January 30, 2018 | |||||
| Expired | (200,000 | ) | $ | 2.00 | August 20, 2017 | ||||
| Warrants at April 30, 2012 | 6,366,794 | $ | 1.02 | February 2017 to January 30, 2018 | |||||