A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Colorado's Leadville Tunnel
Leadville tunnel is Bureau of Mines project, designed to unseal rich but flooded lead, zinc and manganese mines; plans provide for extending tunnel to total length of 17,300 ft; special timbering necessary; flows of water varied between 1650 and 2675 gpm; drill hole maintained 20 ft ahead of face. (See also Min Eng v 3 n 5 May 1951 p 416)
Colorado's Leadville Tunnel
Leadville tunnel is Bureau of Mines project, designed to unseal rich but flooded lead, zinc and manganese mines; plans provide for extending tunnel to total length of 17,300 ft; special timbering necessary; flows of water varied between 1650 and 2675 gpm; drill hole maintained 20 ft ahead of face. (See also Min Eng v 3 n 5 May 1951 p 416)
Colorado's Leadville Tunnel
Compressed Air Mag
1951
2 pages
Article (Journal)
English
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