HyperDic: placer_mining

English > 1 sense of the expression placer mining:
NOUNactplacer miningmining valuable minerals from a placer by washing or dredging
English > placer mining: 1 sense > noun 1, act
Meaningmining valuable minerals from a placer by washing or dredging.
Broadermining, excavationThe act of extracting ores or coal etc from the earth

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