 |
| |||
| underground mining; underground winning; underground work | |||
|
exploitation en mine : 1 Phrase in 1 Thematik |
| Metallurgie | 1 |
|
| |||
| underground mining; underground winning; underground work | |||
|
exploitation en mine : 1 Phrase in 1 Thematik |
| Metallurgie | 1 |