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  • Title
  • TGM Subject
  • Description
  • Collection
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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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  • Excavation Behind Cofferdam
  • Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Civil engineering; Erosion protection works
  • Photograph shows heavy construction and excavation activities occurring behind the protective wall of the Westside cofferdam. Shown here is the construction of the foundation of the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • Night Time Concrete Placement
  • Erosion protection works; Excavation; Hydraulic facilities; Concrete; Trestles
  • Construction occurred around the clock as workers poured the Grand Coulee dam in 3 shifts during all periods of the day.
  • Frank A. Banks Collection
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  • East Bank Construction Trestles
  • Cranes; Erosion protection works; Excavation; Hydraulic facilities; Concrete; Trestles
  • Construction Trestles Extending From the East Bank of the Columbia River.
  • Frank A. Banks Collection
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  • East Bank Construction Trestles
  • Cranes; Erosion protection works; Excavation; Hydraulic facilities; Concrete; Trestles
  • Building a construction trestle from the west bank that met the trestle coming from the E. bank of the Columbia River.
  • Frank A. Banks Collection
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  • East Bank Construction Trestles
  • Cranes; Erosion protection works; Excavation; Hydraulic facilities; Concrete; Trestles
  • Joining both east and west bank construction trestles.
  • Frank A. Banks Collection
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  • East Bank Construction Trestles
  • Erosion protection works; Excavation; Hydraulic facilities; Concrete; Trestles
  • Joining both east and west bank construction trestles.
  • Frank A. Banks Collection
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  • East Bank Construction Trestles
  • Erosion protection works; Excavation; Hydraulic facilities; Concrete; Trestles
  • Joining both east and west bank construction trestles.
  • Frank A. Banks Collection
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  • Working Bedrock Behind West Cofferdam
  • Excavation; Civil engineering; Erosion protection works; Concrete
  • Photograph of excavation activities behind west cofferdam.
  • Frank A. Banks Collection
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  • Excavation Behind Cofferdam
  • Hoisting machinery; Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Civil engineering
  • Photograph shows the steel cells of cluster "G" and "D" separated by the timber-crib plug. Excavation activities in progress on the river bedrock and the Westside bank area. Excavation of the west cofferdam area amounted to 10,000,000 cubic yards...
  • Frank A. Banks Collection
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  • Rock Excavation for Block 39
  • Hoisting machinery; Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Civil engineering; Construction employees
  • Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...
  • Frank A. Banks Collection
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  • West Bedrock Excavation
  • Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Construction employees
  • Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...
  • Frank A. Banks Collection
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  • Block 39 Excavation
  • Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Construction employees
  • Photograph demonstrates concentration of labor power required for excavation activities where men were the mass expenditure in lieu of machinery that was less efficient in the cramped excavation of the deeper crevices in the river bed.
  • Frank A. Banks Collection
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  • Aerial View Southeast of Block 40
  • Construction; Excavation; Civil engineering; Erosion protection works; Concrete; Construction employees
  • Large scale view of construction activities during the summer of 1936 with the construction of concrete placing trestles and other routine features clearly visible from the high vantage point.
  • Frank A. Banks Collection
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  • Diversion Channel Excavation
  • Construction; Excavation; Civil engineering; Erosion protection works; Concrete; Construction employees
  • Aerial Image of excavation activities to eventually divert the Columbia River behind the west side cofferdam.
  • Frank A. Banks Collection
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  • Drain Tile Manufacturing Plant
  • Erosion protection works
  • Workers fabricated these drainage pipes on site and embedded them into blocks of the Grand Coulee Dam to create an extensive drainage system.
  • Frank A. Banks Collection
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  • Drain Tile Manufacturing Plant
  • Erosion protection works
  • Workers fabricated these drainage pipes on site and embedded them into blocks of the Grand Coulee Dam to create an extensive drainage system.
  • Frank A. Banks Collection
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  • 1938 Columbia River Flood
  • Erosion protection works
  • Flood waters overtopped the diversion channels in 1938 causing delays and minimal damage to construction facilities.
  • Frank A. Banks Collection
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  • Penstock Trash Racks
  • Erosion protection works; Water tunnels--Grand Coulee Dam
  • Shown here are timber and steel racks that support the frames and pouring of the main unit penstocks
  • Frank A. Banks Collection

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