| |||
bench cutting | |||
bench sloping; bench working | |||
stepping; notching | |||
bench cutting (карьера или выемки) | |||
bench cutting (карьера, выемки) | |||
| |||
bench cutting; bench working |
разработка уступами : 12 phrases in 4 subjects |
Construction | 1 |
Geology | 1 |
Mining | 5 |
Technology | 5 |