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pre-mining
| grade control drilling
| pre-mining | |
| geol. | опережающее |
| grade control drilling | |
| goldmin. | сопровождающая эксплуатационная разведка; СЭР |
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| опережающее (изучение vbadalov) | |||
| pre-mining: 8 phrases in 3 subjects |
| General | 1 |
| Gold mining | 4 |
| Mining | 3 |
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