 |
| |||
| sublevel slicing; topslicing with partial ore caving followed by cover caving | |||
| подэтажное обрушение с малой высотой подэтажа: 6 phrases in 2 subjects |
| Mining | 5 |
| Technology | 1 |
|
| |||
| sublevel slicing; topslicing with partial ore caving followed by cover caving | |||
| подэтажное обрушение с малой высотой подэтажа: 6 phrases in 2 subjects |
| Mining | 5 |
| Technology | 1 |