Possibilities of manganese production at Leadville, Colo.

Author: Hedges, J. H.
Year: 1940
Document Type: USBI
Issuing Agency: U.S. Dept of the Interior, Bureau of Mines,
SUDOC: I 28.27:7125
Series: Information circular / Bureau of Mines ;
Report Number: 7125.
Subjects: Manganese mines and mining--Colorado--Leadville
Manganese--Colorado--Leadville
Link: https://hdl.handle.net/2027/mdp.39015078534065

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