Placer mining Wikipedia
Placer mining /ˈplæsər/ is the mining of stream bed (alluvial) deposits for minerals. This may .. The simplest technique to extract gold from placer ore is panning. . deposit is located by gold panning, the miner usually shifts to equipment that can .. by John McPhee, published 1993 by Farrar, Straus and Giroux, New Jersey.
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