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Time required in developing selected Arizona copper mines.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 8702, 1974 Jan; :1-144
This study by the Bureau of Mines documents the leadtime required for preliminary and detailed exploration, development of the mine, and construction of beneficiation and support facilities for selected copper deposits in Arizona. The time for major exploration ranged from 1 to 15 years, time for open pit development (or construction) was 1 to 4 years, and time for underground development was 4 to 8 years; one underground mine presently being developed may require 12 years to achieve production. Construction of the beneficiation plants required 8 months to just over 2 years. The data are supported by historical facts for each deposit during the leadtime stages from location of claims through exploration, construction, expansion, and leaching. The sequence of development and factors contributing to differences in the time spans are discussed. Histories are detailed for the Miami, Castle Dome, Copper Cities, San Manuel-Kalamazoo, and Twin Buttes properties; briefly summarized are the Pinto Valley, Miami East, Esperanza- Sierrita, Pima, and Mineral Park properties. Each mining operation had its own pattern of development, and together they present a source of planning information for the development of other properties.
Mining-industry; Metal-mining; Surface-mining; Underground-mining
IH; Information Circular
NTIS Accession No.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 8702
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division