A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High speed hard-rock tunneling for California hydroelectric project
Driving of Pacific Gas and Electric Co 9 1/2 × 11 ft heading, 1060 ft long, in 75 shifts on job to eliminate old timber flume in Central California; distribution of direct costs; record of electric power consumption; mucking and hauling; rotation of crews.
High speed hard-rock tunneling for California hydroelectric project
Driving of Pacific Gas and Electric Co 9 1/2 × 11 ft heading, 1060 ft long, in 75 shifts on job to eliminate old timber flume in Central California; distribution of direct costs; record of electric power consumption; mucking and hauling; rotation of crews.
High speed hard-rock tunneling for California hydroelectric project
Western Construction News
1937
4 pages
Article (Journal)
English
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