Milling and smelting operations of the Magma Copper Co., Superior, Ariz.

Author: Caldwell, Edward J.
Year: 1944
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7300
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 7300
Subject: Copper mines and mining--Arizona
Link: https://hdl.handle.net/2027/mdp.39015077571027

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