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  2. Gold mining in the United States - Wikipedia

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

    Arizona has produced more than 16 million troy ounces (498 tonnes) of gold. Gold mining in Arizona reportedly began in 1774 when Spanish priest Manuel Lopez directed Papago Indians to wash gold from gravel on the flanks of the Quijotoa Mountains, Pima County. Gold mining continued there until 1849, when the Mexican miners were lured away by the ...

  3. Mining district (North America) - Wikipedia

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

    According to a 1904 dictionary of U.S. statutory language, "a mining district is a section of country usually designated by name and described or understood as being confined in certain boundaries, in which gold or silver or both are found in paying quantities, and which is worked therefor, under rules and regulations prescribed by the miners."

  4. Recreational gold mining - Wikipedia

    en.wikipedia.org/wiki/Recreational_gold_mining

    Gold pans and shovels are commonly allowed, but sluice boxes and suction dredges may be prohibited in some areas. [12] [13] There are public mining areas in many states, and prospecting may allow one to stake a gold placer claim or other type of mining claim in certain areas. Some public lands have been set aside for recreational gold panning.

  5. Arizona Department of Mines and Mineral Resources - Wikipedia

    en.wikipedia.org/wiki/Arizona_Department_of...

    The ADMMR engages in technical research, field investigations, education, and information dissemination. As one of its educational activities, it operated the Arizona Mining and Mineral Museum until July 2010, when responsibility for the museum was transferred to the Arizona Historical Society pursuant to a state law enacted in May 2010. [2]

  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 ...

  7. List of Superfund sites in Idaho - Wikipedia

    en.wikipedia.org/wiki/List_of_Superfund_sites_in...

    Bunker Hill Mining & Metallurgical: Shoshone: The Coeur d'Alene River basin contains millions of tons of mine tailings, waste rock and ore concentrates. Soil, sediments, groundwater and surface water are contaminated with heavy metals including cadmium, lead and zinc from former mining and smelting operations. [12] [13] 12/30/1982: 09/08/1983

  8. Congress Mine - Wikipedia

    en.wikipedia.org/wiki/Congress_Mine

    The town of Congress with the mine in the background, c. 1914 The Congress Mine is a gold mine located at the ghost town of Congress, Arizona, on the southeastern slope of the Date Creek Mountains, approximately 18 miles north-northeast of Wickenburg, Arizona, at an elevation of about 3,000 feet (Lat. 34.216 – Long. -122.841).

  9. Copper mining in Arizona - Wikipedia

    en.wikipedia.org/wiki/Copper_mining_in_Arizona

    In Arizona, copper mining has been a major industry since the 19th century. In 2007, Arizona was the leading copper-producing state in the country, producing 750 thousand metric tons of copper, valued at $5.54 billion. Arizona's copper production was 60% of the total for the United States. Copper mining also produces gold and silver as ...