Method and cost of driving the Rock Creek Tunnel, Hecla Mining Co., Shoshone County, Idaho

Author: Butner, D. W.
Year: 1949
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7525
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 7525
Subjects: Silver mines and mining--Idaho--Shoshone County
Tunneling--Idaho--Shoshone County--Costs
Tunneling--Idaho--Shoshone County--Technique
Link: https://hdl.handle.net/2027/mdp.39015078463521

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