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  • TGM Subject
  • Description
  • Collection
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  • Timber Drainage Tunnel
  • Concrete; Dam construction; Dams; Construction; Excavation; Power plants
  • Laminated timber tunnel under plant stock piles at processing plant, Brett gravel pit.
  • Frank A. Banks Collection
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  • Snow Lakes Tunnel
  • Fish hatcheries--Washington (State)--Wenatchee
  • Opening portal of the Snow Lake tunnel.
  • Frank A. Banks Collection
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  • Penstock Tunnel
  • Penstocks--Washington (State)--Grand Coulee Dam; Spillways--Washington (State)--Grand Coulee Dam
  • The 24-foot octagonal penstock tunnel in which the 18-foot penstock liners are installed. The platform and track for handling the penstock sections will be removed when the installation is completed.
  • Frank A. Banks Collection
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  • Snow Lake Tunnel
  • Fish hatcheries--Washington (State)
  • US Department of the Interior Bureau of Reclamation Columbia Basin Project, Washington Migratory Fish Control Snow Lake Tunnel Inlet to Lake and Details for Final Shot into Lake
  • Frank A. Banks Collection
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  • Control Cable Tunnel
  • Employees--Washington (State)--Grand Coulee Dam; Railroads; Tunnels--Washington (State)--Grand Coulee Dam
  • Control cable tunnel, two-thirds of a mile long and 12 feet in diameter, for carrying the electrical lines that will someday join the dam's two powerhouses into a common network. Conduits have been embedded in the concrete floor, and cable trays,...
  • Frank A. Banks Collection
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  • Pumping Plant Discharge Tunnel Excavation
  • Excavation; Dam construction
  • Excavation continued into 1938 primarily in the upper areas of the Grand Coulee construction site that would support the upper portion of this monolithic structure and in supporting structures like the pumping plant that would eventually deliver...
  • Frank A. Banks Collection
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  • Columbia Basin Project History; Text of Volume X (1942)
  • 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
  • Table of Contents and selected material from volume ten of the Columbia Basin History Project for the Grand Coulee Dam
  • Frank A. Banks Collection
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  • Columbia Basin Project History; Text of Volume IX (1941)
  • 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
  • Table of Contents and selected material from volume nine of the Columbia Basin History Project for the Grand Coulee Dam
  • Frank A. Banks Collection
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  • Pumping Plant Discharge Tunnel Excavation
  • Excavation; Dam construction
  • Excavation continued into 1938 primarily in the upper areas of the Grand Coulee construction site that would support the upper portion of this monolithic structure and in supporting structures like the pumping plant that would eventually deliver...
  • Frank A. Banks Collection

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