 |
| |||
| mining from bottom up; ascending mining | |||
| rise face (Stoß); roof work; working to the rise (Verhieb) | |||
|
schwebender Abbau : 2 do fraz, 1 tematyki |
| Górnictwo | 2 |
|
| |||
| mining from bottom up; ascending mining | |||
| rise face (Stoß); roof work; working to the rise (Verhieb) | |||
|
schwebender Abbau : 2 do fraz, 1 tematyki |
| Górnictwo | 2 |