Possibilities of manganese production at Leadville, Colo. /
by J. H. Hedges.

Description

Main Author: Hedges, J. H.
Related Names: United States. Bureau of Mines.
Language(s): English
Published: Washington, D.C. : U.S. Dept of the Interior, Bureau of Mines, 1940.
Subjects: Manganese mines and mining > Manganese mines and mining / Colorado > Manganese mines and mining / Colorado / Leadville.
Manganese > Manganese / Colorado > Manganese / Colorado / Leadville.
Note: "July 1940".
Physical Description: 23 p. : ill. ; 26 cm.
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