 |
| |||
| mining from bottom up; ascending mining | |||
| rise face (Stoß); roof work; working to the rise (Verhieb) | |||
|
schwebender Abbau : 2 a las frases, 1 temas |
| Minería | 2 |
|
| |||
| mining from bottom up; ascending mining | |||
| rise face (Stoß); roof work; working to the rise (Verhieb) | |||
|
schwebender Abbau : 2 a las frases, 1 temas |
| Minería | 2 |