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  1. 1
    A simplified economic filter for open-pit gold-silver mining in the United States /
    by Singer, D. A.
    Published 1998
    Government Document Microform Book
  2. 2
    Geology, mineralogy, and paragenesis of the Pride of America Mine, Lake City, Hinsdale County, Colorado /
    by Sanford, Richard F.
    Published 1986
    Government Document Microform Book
  3. 3
    The relationship between the Porco, Bolivia, Ag-Zn-Pb-Sn deposit and the Porco caldera.
    Published 1994
    Government Document Book
  4. 4
    Mineral resources of Alaska : report on progress of investigations in 1924 /
    Government Document Book
  5. 5
    Silver.
    Get full text
    Government Document Serial
  6. 6
    Maps showing gold and silver potential of the Round Mountain and Manhattan quadrangles, Nye County, Nevada /
    by Shawe, Daniel R., 1925-
    Published 1982
    Government Document Map
  7. 7
    Atlas to accompany the monograph on the geology of the Comstock Lode and the Washoe district /
    Get full text
    Map
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