A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Churn drilling practice in tri-state zinc-lead district
Brief history of district and development of method since 1890; outline of geology of district; details of present practice; sampling method; underground drilling; drilling tailing piles.
Churn drilling practice in tri-state zinc-lead district
Brief history of district and development of method since 1890; outline of geology of district; details of present practice; sampling method; underground drilling; drilling tailing piles.
Churn drilling practice in tri-state zinc-lead district
Min Congress J
Netzeband, W.F. (author)
1935
3 pages
Article (Journal)
English
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