Jacksonville Public Library
Copper mines and mining -- United States
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http://bibfra.me/vocab/lite/Concept
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Copper mines and mining -- United States
Name
Copper mines and mining
Focus
Copper mines and mining
Sub focus
United States
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Technology, employment, and output per man in copper mining, by Y. S. Leong [and five others]
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
Evaluation, lease sales, copper
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Copper mines and mining
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United States
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