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  2. Yuba Goldfields - Wikipedia

    en.wikipedia.org/wiki/Yuba_Goldfields

    The Yuba Goldfields, also known as the Hammonton dredge field, is the largest gold dredge field in California. Located along the Yuba River approximately 6–12 miles (10–20 km) upstream of the town of Marysville , in Yuba County , the Hammonton dredge field was actively dredged for gold from 1904 [ 1 ] to 1968. [ 2 ]

  3. 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.

  4. General Mining Act of 1872 - Wikipedia

    en.wikipedia.org/wiki/General_Mining_Act_of_1872

    This law, approved on May 10, 1872, codified the informal system of acquiring and protecting mining claims on public land, formed by prospectors in California and Nevada from the late 1840s through the 1860s, such as during the California Gold Rush. All citizens of the United States of America 18 years or older have the right under the 1872 ...

  5. Gold in California - Wikipedia

    en.wikipedia.org/wiki/Gold_in_California

    Because the gold in the California gravel beds was so richly concentrated, the early forty-niners simply panned for gold in California's rivers and streams, a form of placer mining. [ 10 ] [ 11 ] However, panning cannot take place on a large scale, and industrious miners and groups of miners graduated to placer mining " cradles " and "rockers ...

  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. Gold prospecting - Wikipedia

    en.wikipedia.org/wiki/Gold_prospecting

    A gold pan. Gold prospecting is the act of searching for new gold deposits. Methods used vary with the type of deposit sought and the resources of the prospector. Although traditionally a commercial activity, in some developed countries placer gold prospecting has also become a popular outdoor recreation. Gold prospecting has been popular since ...

  8. Recreational gold mining - Wikipedia

    en.wikipedia.org/wiki/Recreational_gold_mining

    Recreational gold mining and prospecting has become a popular outdoor activity several countries, including New Zealand (particularly in Otago), Australia, South Africa, Wales (at Dolaucothi and in Gwynedd), Canada and the United States especially. Recreational mining is typically small-scale placer mining but has been challenged for ...

  9. F. E. Company Dredge No. 4 - Wikipedia

    en.wikipedia.org/wiki/F._E._Company_Dredge_No._4

    The dredge commenced operations on lower Chicken Creek in September and worked for approximately five months every year thereafter until October 1967, when it produced its final cleanup. In 1998, the 500 ton dredge was moved overland to its current location at the Chicken Gold Camp.

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