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  2. Gold cyanidation ban - Wikipedia

    en.wikipedia.org/wiki/Gold_cyanidation_ban

    In 1998 Mono County in California effectively banned the usage of cyanide and other chemicals for mining or processing ore through a county ordinance., The US state of Montana banned open pit heap leaching and vat leaching using cyanide for gold mining following a citizen's initiative, Initiative 137, proposed by the Montana Environmental Information Center that was approved through a ...

  3. Gold panning - Wikipedia

    en.wikipedia.org/wiki/Gold_panning

    "Panning out" ~ Stereoscopic view of print taken by the U.S. Geological and Geographic Survey of the Territories ~ circa 1874–1879 Gold panning is a simple process. Once a suitable placer deposit is located, some alluvial deposits are scooped into a pan, where they are then wetted and loosed from attached soils by soaking, fingering, and aggressive agitation in water.

  4. Title 30 of the United States Code - Wikipedia

    en.wikipedia.org/wiki/Title_30_of_the_United...

    30 U.S.C. ch. 3A—Leases and Prospecting Permits; 30 U.S.C. ch. 4—Lease of Gold, Silver, or Quicksilver Deposits When Title Confirmed by Court of Private Land Claims; 30 U.S.C. ch. 5—Lease of Oil and Gas Deposits in or under Railroads and Other Rights-of-Way; 30 U.S.C. ch. 6—Synthetic Liquid Fuel Demonstration Plants

  5. 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 ...

  6. General Mining Act of 1872 - Wikipedia

    en.wikipedia.org/wiki/General_Mining_Act_of_1872

    The Chaffee law of 1869 and the placer law of 1871 were combined into the General Mining Act of 1872. The mining law of 1866 had given discoverers rights to stake mining claims to extract gold, silver, cinnabar (the principal ore of mercury) and copper. When Congress passed the General Mining Act of 1872, the wording was changed to "or other ...

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  8. Gold mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Gold_mining_in_the_United...

    US annual gold production (1840–2012) In the United States, gold mining has taken place continually since the discovery of gold at the Reed farm in North Carolina in 1799. The first documented occurrence of gold was in Virginia in 1782. [1] Some minor gold production took place in North Carolina as early as 1793, but created no excitement.

  9. Crandon mine - Wikipedia

    en.wikipedia.org/wiki/Crandon_mine

    Crandon mine was a mine proposed for northeastern Wisconsin, USA.It was to be situated near the town of Crandon and the Mole Lake Ojibwe Reservation in Forest County.The mine was the center of a multi-decade political and regulatory battle between environmentalists, American Indian tribes, sportfishing groups, and the State of Wisconsin and several large mining corporations.