Open-pit copper mining methods at New Cornelia Branch, Phelps Dodge Corp., Pima County, Ariz.

Author: Hardwick, W. R.
Year: 1960
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 7938
Subject: Copper mines and mining--Arizona--Pima County
Link: https://hdl.handle.net/2027/mdp.39015078454637

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