Mining methods and costs at the Central-Eureka Mine, Amador County, Calif.

Author: Spiers, James.
Year: 1931
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: C 22.11:6512
Series: Information circular / Bureau of Mines ;
Report Number: 6512
Subject: Gold mines and mining--California--Amador County
Link: https://hdl.handle.net/2027/mdp.39015077576596

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