A trough usually 2 meters long, used for washing gold-bearing earth utilizing moving water and a series of riffles for trapping heavy particles. It is longer than a rocker or sluice
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Category: <span>L</span>
A rock body thick in the middle and tapered out at its ends
2,240 lbs. avoirdupois, compared to a short ton, which is 2,000 lbs.
Chemical collection of minerals dissolved from ore
Emitting light