| Mine A Face 1 | Mine A Face 2 | Mine A Face 3 | Mine A Face 4 | Mine B Face 1 | Mine B Face 2 | Mine C Face 3 | Mine D Face 1-3 |
Bench height (m) | 10 | 15 | 13 | 15 | 15 | 15 | 10 | 10 |
Bench angle (deg.) | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
Hole spacing (m) | 4.0 | 3.8 | 4.0 | 4.0 | 5.5 | 6.0 | 5.0 | 2.0 |
Burden (m) | 4.1 | 3.6 | 4.2 | 4.0 | 6.0 | 6.0 | 5.0 | 2.5 |
Hole diameter (mm) | 110 | 90 | 110 | 90 | 140 | 140 | 130 | 75 |
Powder factor (g/t) | 91.7 | 77.5 | 92.2 | 52.8 | 112 | 102 | 66.7 | 158 |