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Milling methods and costs at the Montana mine concentrator of the Eagle-Picher Lead Co., Ruby, Ariz.

Mining methods and practices at the Johnson Camp Copper-Zinc Mine, Coronado Copper & Zinc Co., Cochise County, Arizona.

Published Year

• 1930-1939 (1)
• 1950-1959 (1)

Subject

• Zinc mines and mining--Arizona (2) *
• Copper mines and mining--Arizona (1)
• Lead mines and mining--Arizona (1)
• Mines and mineral resources--Arizona (1)
• Silver mines and mining--Arizona (1)

Author

• Andrus, D. E. (1)
• Hardwick, W. R. (1)
• Sierakoski, Joe. (1)

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