1.1 PHASES OF A MINING PROJECT ... The Guidebook does not discuss the mining of ores that are extracted using strip mining ... Therefore, the next step in mining is
1. Mining – open pit and underground. To define the ore from the waste rock, samples are taken and assayed. Assay results are used to mark out areas of ore and ...
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7 Gold & Silver Gold has ... large sites by progressive extraction along steps ... 7.1.1.2 Underground Room-and-Pillar Mining Underground mining occurs if the ore ...
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شماره 1688، جادهجاده شرقی گائوک، منطقه جدید پودونگ، شانگهای، چین.
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