| |||
| back-fill stoping; cut and fill stoping; cut-and-fill method | |||
|
exploitation par remblayage : 5 Phrasen in 1 Thematik |
| Metallurgie | 5 |
| |||
| back-fill stoping; cut and fill stoping; cut-and-fill method | |||
|
exploitation par remblayage : 5 Phrasen in 1 Thematik |
| Metallurgie | 5 |