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| drift mining (подземная разработка близповерхностных угольных залежей или руд металлов наклонными штольнями (вместо строительства карьеров или шахт)) | |||
| drift mining | |||
| open-cast working with adits and raises | |||
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| adit-cut mining | |||
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| adit-cut mining | |||
| разработка штольнями: 4 phrases in 3 subjects |
| Cement | 1 |
| Makarov | 1 |
| Mining | 2 |
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