Miners get money from the person for the gold they bring him or her. Where, Why, and How . A large rotating metal cylinder filled with steel ball bearings used to crush rocks into small pieces for further processing. See Fort Knox Gold Mine . Black Sand Substance found at the bottom of river beds containing iron.
Gold is found in black sand.
See Suction Dredging . The use of heavy equipment to lift and load dirt and rocks to be mined. See Cat Mining . Dredge A device used to scoop up and process gravel so that the gold may be separated from it. See Alaska Gold Dredges .