Open-pit copper mining and concentrating methods and costs, Silver Bell Unit, American Smelting and Refining Co., Pima County, Ariz. / by W.R. Hardwick.

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Bibliographic Details
Online Access:	Search for the full-text version of this title in HathiTrust
Main Author:	Hardwick, W. R. (William R.)
Corporate Authors:	American Smelting and Refining Company, United States. Bureau of Mines
Format:	Government Document Book
Language:	English
Published:	[Washington] : U.S. Bureau of Mines, 1963.
Series:	Information circular (United States. Bureau of Mines) ; 8153.
Subjects:	Copper mines and mining > Arizona > Pima County. Copper mines and mining. Arizona > Pima County.

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Holdings details from PASCAL Offsite
Call Number:	I 28.27:8151-8164
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