 |
| |||
| opencast mining; strip mining; surface mining; open cast mining | |||
| opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore | |||
| explotacion a cielo abierto: 3 do fraz, 2 tematyki |
| Ochrona środowiska | 1 |
| Węgiel | 2 |