A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Columbia basin -- Bacon tunnel construction progress
Driving of 1.9 mi-tunnel, major structure of main canal from Grand Coulee dam, is nearly completed with progress steady at 20 ft per 24 hr on full face operations; typical construction stages illustrated showing employment of mechanical equipment.
Columbia basin -- Bacon tunnel construction progress
Driving of 1.9 mi-tunnel, major structure of main canal from Grand Coulee dam, is nearly completed with progress steady at 20 ft per 24 hr on full face operations; typical construction stages illustrated showing employment of mechanical equipment.
Columbia basin -- Bacon tunnel construction progress
Western Construction News
1948
3 pages
Article (Journal)
English
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Construction begins on Columbia Basin canal system
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