Trends in practice and costs of concentrating copper ores

Author: Chapman, T. G.
Year: 1934
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:6792
Series: Information circular / Bureau of Mines ;
Report Number: 6792
Subject: Copper mines and mining--United States
Link: https://hdl.handle.net/2027/mdp.39015086486092

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