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placer mining with mini trommel

Placer mining (/ˈplæsər/ or /ˈpleɪsər/) is the mining of stream bed (alluvial) ... 4.1 Panning; 4.2 Rocker; 4.3 Sluice box; 4.4 Dry washing; 4.5 Trommel; 4.6 Underground mining .... The small specks are gold, the larger ones are merely pebbles

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