A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New Leadville drainage tunnel to boost zinc output
Outline of geology of Leadville district, in Lake County, Colo; history of mines and of early drainage tunnels and projects; features of new proposal; choice of route; special legislation; main tunnel; laterals; estimated total time for completion of project is 555 days; Congress included appropriation of $1,400,000 for this purpose, in funds allotted to Bureau of Mines.
New Leadville drainage tunnel to boost zinc output
Outline of geology of Leadville district, in Lake County, Colo; history of mines and of early drainage tunnels and projects; features of new proposal; choice of route; special legislation; main tunnel; laterals; estimated total time for completion of project is 555 days; Congress included appropriation of $1,400,000 for this purpose, in funds allotted to Bureau of Mines.
New Leadville drainage tunnel to boost zinc output
Eng Min J
1943
Article (Journal)
English
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