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  1. 1
    The porphyry coppers /
    Book
  2. 2
    The porphyry coppers in 1956.
    Book
  3. 3
    Romantic copper : its lure and lore /
    Book
  4. 4
    American copper mines.
    Book
  5. 5
    The U.S. copper mining industry : a perspective on financial health /
    by Tomimatsu, T. T.
    Published 1980
    Government Document Book
  6. 6
    In situ copper leaching in the United States : case histories of operations /
    by Ahlness, Jon K.
    Published 1983
    Government Document Book
  7. 7
    Copper /
    Book
  8. 8
    A plan with proposals for forming a company to work mines in the United States : and to smelt and refine the ores whether of copper, lead, tin, silver, or gold. /
    Evans Digital Edition
    eBook
  9. 9
    Agriculture Department Appropriation Bill for 1943 : REA Program as Related to the Copper Supply: hearings before the United States House Committee on Appropriations, Subcommittee on Agriculture Department Appropriations, Seventy-Seventh Congress, first session, on Nov. 19, 24-28, Dec. 4, 5, 1941.
    Published 1941
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    Government Document eBook
  10. 10
    National Minerals Resources Division : hearings before the United States House Committee on Public Lands, Subcommittee on Mines and Mining, Eightieth Congress, first session, on Mar. 28, Apr. 4, 8, 11, 1947.
    Published 1947
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    Government Document eBook
  11. 11
    Patent for Lands Containing Deposits of Copper and Associated Minerals : hearings before the United States House Committee on Public Lands, Sixty-Ninth Congress, second session, on Jan. 18, 1927.
    Published 1927
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    Government Document eBook
  12. 12
    Closure of underground copper mines : hearing before the Subcommittee on Minerals, Materials, and Fuels of the Committee on Interior and Insular Affairs, United States Senate, Ninety-third Congress, second session, to review the Anaconda Company's plans to close its underground copper mines in Butte, Montana, November 25, 1974.
    Published 1975
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    Government Document eBook
  13. 13
    Final environmental impact statement for the Rosemont copper project : a proposed mining operation, Coronado National Forest, Pima County, Arizona.
    Published 2013
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    Government Document eBook
  14. 14
    Undercut block-caving method of mining in western copper mines.
    Published 1930
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    Government Document eBook
  15. 15
    Technology, employment, and output per man in copper mining /
    by Leong, Yau Sing, 1899-
    Published 1940
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    Government Document eBook
  16. 16
    An open pit visible from the moon : the Wilderness Act and the fight to protect Miners Ridge and the public interest /
    by Sowards, Adam M.
    Published 2020
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    eBook
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