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  2. Placer claim - Wikipedia

    en.wikipedia.org/wiki/Placer_claim

    Gold mining is one of the most common uses for the staking of mining claims. In Alaska, state mining claims may be up to 160 acres (0.65 km 2), and there is no distinction between lode or placer claims. The boundaries of the claim must follow the 4 cardinal directions, with an exception being adjustments for existing valid claims.

  3. General Mining Act of 1872 - Wikipedia

    en.wikipedia.org/wiki/General_Mining_Act_of_1872

    Mining claim posted: NO Prospecting, Panning, Sluicing ... South Yuba River, California 2011 photo. A mining claim is the right to explore for and extract minerals from a tract of land. [19] Claim staking is the required procedure of marking the boundaries of the mining claim, typically with wooden posts or substantial piles of rocks. [20]

  4. Mining district (North America) - Wikipedia

    en.wikipedia.org/wiki/Mining_district_(North...

    Mining districts are created when and where sufficient prospecting and mining activity has occurred to warrant the establishment of specific laws and agreements governing the mining of ores and the designation of claims. Thus, the establishment of a mining district occurs at the end of a period of pioneering and marks the beginning of serious ...

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  6. Thompson Creek Metals - Wikipedia

    en.wikipedia.org/wiki/Thompson_Creek_Metals

    The mine has been in operation since 1983 and uses conventional open-pit mining methods. The mine was sold in 1993 to Thompson Creek Metals Company (USA), which began mining at the site in April 1994. The company has claims on over 22,000 acres of land (includes waste dumps).

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  8. Land claim - Wikipedia

    en.wikipedia.org/wiki/Land_claim

    A mining claim is the claim of the right to extract minerals from a tract of public land. In the United States, the practice began with the California gold rush of 1849. In the absence of organized government, the miners in each new mining camp made up their own rules, and to a large extent adopted Mexican mining law.

  9. List of Copper Country mines - Wikipedia

    en.wikipedia.org/wiki/List_of_Copper_Country_mines

    Chippewa Mining Company Exploration - Ontonagon County; Cherokee mine - Twin Lakes, Houghton County; Chicago and Isle Royale mine - on the northwest shore of Isle Royale National Park; Clark mine - near Copper Harbor, Keweenaw County; Cliff mine - abandoned Clifton, Keweenaw County; operated from 1845 to 1878 Avery shaft