Milling method and cost at conglomerate mill of Calumet & Hecla Consolidated Copper Co.

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Bibliographic Details
Online Access:	Full Text (via ProQuest)
Corporate Author:	Calumet and Hecla Consolidated Copper Company
Other Authors:	Benedict, C. Harry, 1876-1963
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [s.n.], 1930.
Series:	Mines Bur. Info. Circ. No. 6364.
Subjects:	Milling industry.

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Call Number:	C22.11-6364
C22.11-6364	Available