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  • Book cover of Investigation of the Fairview Hill Area Manganese Deposits, Leadville Lake County, Colo

    Investigation of the Fairview Hill Area Manganese Deposits, Leadville Lake County, Colo

    Norman E. Ebbley, John T. Schumacher

     · 1949

  • Book cover of Examination, Mapping, and Sampling of Mine Shafts and Underground Workings, Leadville, Lake County, Colo

    Examination, Mapping, and Sampling of Mine Shafts and Underground Workings, Leadville, Lake County, Colo

    Norman E. Ebbley

     · 1949

  • No image available

    Examination, Mapping, and Sampling of Mine Shafts and Underground Workings, Leadville, Lake County, Colo

    Norman E. Ebbley, John I. Schumacher

     · 1949

  • No image available

    Investigation of the McCormick Chromite Mine, Tuolumne County, Calif

    Clyde L. Holmberg, Abraham L. Engel, Albert J. Kauffman, Frank Joseph Wiebelt, John R. Shattuck, Kenneth L. Cook, Melden E. Volin, Norman E. Ebbley, Paul Zinner, Robert L. Jones, Walter T. Lewiecki, Edward J. Matson, Harold J. Heinen, John T. Schumacher, S. R. Wilson, Spangler Ricker, Wilbur I. Duvall, Owen W. Terry

     · 1949

  • No image available

    Concentration of Oxide Manganese Ores from Payday No. 1 and Newcomb Properties, Weber and Rich Counties, Utah

    Albert Louis Toenges, Edward J. Matson, Frank Joseph Wiebelt, Frank S. Wartman, J. A. McAllister, John Roy Thoenen, Norman E. Ebbley, Rethel L. Hubbard, Russell R. Trengove, Simeon A. Allen, Welton J. Wenger, J. D. Warne, John S. Ball, Kenneth Edison Stanfield, Theodore R. Jolley, Walter J. Long

     · 1949

  • No image available

    Report of Investigations 4578-4589

    United States. Bureau of Mines

     · 1949

  • No image available

    Report of Investigations 4508-4518

    United States. Bureau of Mines

     · 1949

Coded by Alvin Chou