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  2. List of quarries in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_quarries_in_the...

    It began as an open pit quarry in 1886 due in part to its proximity to a railroad. Underground room and pillar mining began in 1936. Leased storage began in 1986. Used by the U.S. Department of Defense for storage of 10,000,000 MRE meals, by Bridgestone for storage of 400,000 tires, and by Controlled Pharming Ventures for growing tomatoes and corn.

  3. List of open-pit mines - Wikipedia

    en.wikipedia.org/wiki/List_of_open-pit_mines

    Hull–Rust–Mahoning Open Pit Iron Mine – largest open pit iron mine in the world, near Hibbing, Minnesota [7] Lavender Pit – copper mine in Cochise County, Arizona; Morenci Mine – copper mine in Greenlee County, Arizona; Mountain Iron Mine – iron mine in Mountain Iron, Minnesota; Robinson Mine – copper and gold mine in Ruth, Nevada [8]

  4. Quarry - Wikipedia

    en.wikipedia.org/wiki/Quarry

    A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.

  5. Category:Surface mines in the United States - Wikipedia

    en.wikipedia.org/wiki/Category:Surface_mines_in...

    Quarries in the United States (2 C, 94 P) ... Hull–Rust–Mahoning Open Pit Iron Mine; I. Iron Mountain Mine; L. ... Code of Conduct;

  6. Open-pit mining - Wikipedia

    en.wikipedia.org/wiki/Open-pit_mining

    Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, [1] is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin.

  7. NC DEQ agrees to permit RDU quarry over objections of ... - AOL

    www.aol.com/nc-deq-agrees-permit-rdu-152827181.html

    The Department of Environmental Quality reached a settlement with Wake Stone Corp. that will allow the company to mine stone on land adjacent to Umstead State Park.

  8. List of active gold mines in Nevada - Wikipedia

    en.wikipedia.org/wiki/List_of_active_gold_mines...

    ^[1] Carlin consists of three open pits and four underground mines: Gold Quarry, Emigrant/Rain, Chukar, Exodus, Pete Bajo & Leeville. ^[2] Rochester also produced 3.16 million oz of silver. [2] ^[3] Includes Pipeline and South Pipeline open pits and Cortez Hills open pit and underground mines.

  9. Surface mining - Wikipedia

    en.wikipedia.org/wiki/Surface_mining

    The Siilinjärvi carbonatite complex, [1] an open-pit mine owned by Yara International, in Siilinjärvi, Finland Coal strip mine in Wyoming. Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the ...