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  2. Rocker box - Wikipedia

    en.wikipedia.org/wiki/Rocker_box

    Like a sluice box, the rocker box has riffles and a carpet in it to trap gold. It was designed to be used in areas with less water than a sluice box. The mineral processing involves pouring water out of a small cup and then rocking the small sluice box like a cradle, thus the name rocker box or cradle.

  3. Mining methods of the Klondike Gold Rush - Wikipedia

    en.wikipedia.org/wiki/Mining_methods_of_the...

    Panning for gold was the simplest method of recovering gold, but mostly used for prospecting since it was slow. A faster way was by a rocker box or by sluicing. Dirt was filled into the box or sluice together with water and rocking movements or gravity would make the gold particle go to the bottom whereas sand and fine gold particles would flow ...

  4. Gold dredge - Wikipedia

    en.wikipedia.org/wiki/Gold_dredge

    Gold Dredge, Klondike River, Canada, 1915 The Yankee Fork dredge near Bonanza City, Idaho, which operated into the 1950s. A gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods. The original gold dredges were large, multi-story machines built in the first half of the 1900s.

  5. Sluice - Wikipedia

    en.wikipedia.org/wiki/Sluice

    A sluice gate. A sluice (/ s l u s / SLOOS) is a water channel containing a sluice gate, a type of lock to manage the water flow and water level. It can also be an open channel which processes material, such as a river sluice used in gold prospecting or fossicking. A mill race, leet, flume, penstock or lade is a sluice channeling water toward a ...

  6. Hydraulic mining - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_mining

    Gold miners excavate an eroded bluff with jets of water at a placer mine in Dutch Flat, California sometime between 1857 and 1870.. The modern form of hydraulic mining, using jets of water directed under very high pressure through hoses and nozzles at gold-bearing upland paleogravels, was first used by Edward Matteson near Nevada City, California in 1853 during the California Gold Rush. [3]

  7. Drywasher - Wikipedia

    en.wikipedia.org/wiki/Drywasher

    This is pumped to blow through the screening and thus blow away loose dirt while the heavy gold remains. Pinos Altos, New Mexico, 1940. A drywasher is a common desert mining tool for gold mining. A drywasher is like a highbanker, [clarification needed] since it uses a motor and a form of sluice, but it has no need for water.

  8. Recreational gold mining - Wikipedia

    en.wikipedia.org/wiki/Recreational_gold_mining

    Within Japan recreational gold fossicking can be carried out in Hokkaido, Yamanashi and Michinoku. [4] Within Hokkaido, placer gold can be found in the Usotan River, the Peichian River, the Yūbari River, and the Rekifune River. [5] The traditional gold pan used in Japan is a rectangular concave shaped pan called the Yuri-ita (揺り板). [6]

  9. Mining sludge - Wikipedia

    en.wikipedia.org/wiki/Mining_sludge

    It has been particularly prominent in gold fields in Australia and California in the nineteenth century. [1] In the 1840s in California and 1850s in Australia, methods for extracting alluvial gold were developed which involved washing soil and gravel through sluice boxes using diverted streams and other water sources. The waste or tailings were ...

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