Progress in size of, and need for, large equipment stressed; type of equipment used by Bagdad Copper Corp, Bagdad, Ariz; operating cost for various sizes of equipment including diesel and electric shovels, and trucks, are compared.
Larger equipment needed for open pit mining
Soc Automotive Engrs -- Paper
Society of Automotive Engineers -- Meeting ; 1953 Arizona
1953
2 pages
Conference paper
English
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LARGER EQUIPMENT NEEDED FOR OPEN PIT MINING
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