Placer mining, ancient method of using water to excavate, transport, concentrate, and recover heavy minerals from alluvial or placer deposits. Examples of deposits mined by means of this technique are the gold-bearing sands and gravel that settle out …
noun. : the process of extracting minerals from a placer especially by washing, dredging, or hydraulic mining.
placer mining. noun. /ˈpleɪsə maɪnɪŋ/. /ˈpleɪsər maɪnɪŋ/. [uncountable] (North American English) the process of getting gold or other valuable minerals, usually from a river …
Placer mining is a way to separate various mining materials from gravel, sand, or hard rock. It differs from other methods like hardrock mining in that it uses …
Unlike hardrock mining, which extracts veins of precious minerals from solid rock, placer mining is the practice of separating heavily eroded minerals like gold …