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Placer mining: Placer mining, ancient method of using water to excavate, transport, concentrate, and recover heavy minerals from alluvial or placer deposits. Examples ...
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A placer Mine is the use of water to excavate and transport minerals. It is the mining of alluvial deposits for minerals. Placer mining is used for delicate metal ...
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A placer Mine is the use of water to excavate and transport minerals. It is the mining of alluvial deposits for minerals. Placer mining is used for delicate metal ...
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