 |
| |||
| open cast mining; opencast mining; strip mining; surface mining | |||
|
exploitation par couches : 2 a las frases, 2 temas |
| Ambiente | 1 |
| Carbón | 1 |
|
| |||
| open cast mining; opencast mining; strip mining; surface mining | |||
|
exploitation par couches : 2 a las frases, 2 temas |
| Ambiente | 1 |
| Carbón | 1 |