A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Leadville drainage tunnel, second project, lake County, Colo
Leadville mining history, particularly related to drainage efforts, and possibilities for future mine drainage; account of second project, including description of operating cycle, exploratory drilling done as safety measure, surveying procedures, geology, and cost data.
Leadville drainage tunnel, second project, lake County, Colo
Leadville mining history, particularly related to drainage efforts, and possibilities for future mine drainage; account of second project, including description of operating cycle, exploratory drilling done as safety measure, surveying procedures, geology, and cost data.
Leadville drainage tunnel, second project, lake County, Colo
U S Bur Mines -- Report Investigations
Salsbury, M.H. (author)
1956
50 pages
Report
English
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New Leadville drainage tunnel to boost zinc output
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