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  • Bedrock Preparation
  • Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Civil engineering; Erosion protection works
  • Photograph shows a timber plug used to stem the flow the Columbia River for preparation of bedrock. The last downstream crib was placed on December 9, 1936 and the final closure of the main channel with the timber plug ended on December 15, 1936.
  • Frank A. Banks Collection
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  • Preparation for River Diversion
  • Dam construction; Dams; Power plants; Concrete; Trestles; Construction; Rivers
  • Activities in preparation for diversion of the Columbia River for construction of the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • Concrete Block Preparation
  • Construction employees; Concrete
  • Workers pressure washing a slab of concrete in preparation for another five foot slab of concrete. Notice the cooling pipes spaced 5 feet 9 inches apart, these pipes when flushed with water served to strengthen the concrete by maintaining a...
  • Frank A. Banks Collection
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  • Columbia Basin Project History; Text of Volume VI (1938)
  • Dam construction; Dams; Power plants; Reservoirs; Spillways; Hydroelectric power; Housing; Construction; Plans; Government officials; Excavation; Surveying; Irrigation; Rivers; Pedestrian bridges; Sewerage; Hydraulic facilities; Civil service
  • Entire text portion of Columbia Basin History Project, vol. 6 documenting the construction of the Grand Coulee Dam.
  • Frank A. Banks Collection

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