 |
| |||
| open-cast mine | |||
| |||
| opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore | |||
| minas a ceu aberto: 5 a las frases, 2 temas |
| Carbón | 4 |
| Ingeniería mecánica | 1 |
|
| |||
| open-cast mine | |||
| |||
| opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore | |||
| minas a ceu aberto: 5 a las frases, 2 temas |
| Carbón | 4 |
| Ingeniería mecánica | 1 |