 |
| |||
| rill cutting | |||
| rilling; rill cut stoping; overhand stoping in inclined floors; rill cut mining; rill stoping; rillcut stoping | |||
| выемка диагональными слоями: 3 a las frases, 1 temas |
| Minería | 3 |
|
| |||
| rill cutting | |||
| rilling; rill cut stoping; overhand stoping in inclined floors; rill cut mining; rill stoping; rillcut stoping | |||
| выемка диагональными слоями: 3 a las frases, 1 temas |
| Minería | 3 |