 |
| |||
| open-cast mining; open-cast mine | |||
| open-pit mining | |||
| mining open cast; openwork; surface working | |||
| open-cut mine | |||
| opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore | |||
| open mining; open pit; stage working; surface winning | |||
| open cast mining; opencast mining; strip mining; surface mining | |||
| open cut; open cast; surface mining (oil shale production); open pit mining (oil shale production) | |||
| open-cast workings | |||
| |||
| strip pit | |||
| exploitation à ciel ouvert: 10 phrases in 6 subjects |
| Coal | 1 |
| Environment | 3 |
| General | 1 |
| Life sciences | 1 |
| Metallurgy | 3 |
| Natural resourses and wildlife conservation | 1 |