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| opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore | |||
| opencast mining (Natalya Rovina); open-pit mining (Natalya Rovina) | |||
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| |||
| opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore | |||
| opencast mining (Natalya Rovina); open-pit mining (Natalya Rovina) | |||