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A platform for research: civil engineering, architecture and urbanism
Pipe scram drift supports resist blasting damage
Supplementing article by J. B. HUTTL on practice of National Tunnel and Mines Co, near Tooele, Utah, indexed from Aug 1945 issue under Drilling, Diamond -- Blast Holes, present item describes use of 10-in. pipe members tightly encasing turned wooden poles; sets are erected at finger entries and joints spot welded, with reinforcing angle irons connecting joints; method of repairing cracked cap.
Pipe scram drift supports resist blasting damage
Supplementing article by J. B. HUTTL on practice of National Tunnel and Mines Co, near Tooele, Utah, indexed from Aug 1945 issue under Drilling, Diamond -- Blast Holes, present item describes use of 10-in. pipe members tightly encasing turned wooden poles; sets are erected at finger entries and joints spot welded, with reinforcing angle irons connecting joints; method of repairing cracked cap.
Pipe scram drift supports resist blasting damage
Eng Min J
1945
2 pages
Article (Journal)
English
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