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  • M.W.A.K. Columbian (Safety News letter); Volume Three Number Twenty Five
  • Bulldozers; Tourism; Rivers; Conveying systems--Washington (State)--Grand Coulee Dam; Dam construction; Excavation; Drilling & boring machinery; Grouting; Concrete; Rivers; Conveyors; Gravel
  • Third Volume, Twenty Fifth issue, of the Mason-Walsh-Atkinson-Kier CO. builders of Coulee Dam Safety Newsletter. Created by the Safety Department and issued to the residents of Mason City and contract workers at Grand Coulee Dam.
  • Frank A. Banks Collection
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  • Rock Grouting Hole
  • Grouting; Drilling & boring machinery; Pumping plants
  • Drilling a grout hole in the pumping plant foundation rock. This is a diamond drill rotated by compressed air and washed by a jet of water to keep the drill rod cool to remove the cuttings.
  • Frank A. Banks Collection
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  • Grouting Hole Drill Bits
  • Grouting; Drilling & boring machinery
  • Types of diamond drill bits used for drilling grout holes. From left to right: 1-7/8" core bit, 1-7/8" concave solid bit, and 1-3/8" concave solid bit. Black diamonds, the cutting agent, are partially visible in the metal of the bits.
  • Frank A. Banks Collection
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  • Grouting Holes
  • Grouting; Drilling & boring machinery; Pumping plants
  • A summary of drilling and grouting for the year 1939 and up to that date can be found on CBPH
  • Frank A. Banks Collection
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  • Niles Radial Drill Press in Work
  • Drilling & boring machinery; Employees--Washington (State)--Grand Coulee Dam
  • A six-foot Niles radial drill press, in the machine shop of the left powerhouse, was used to bore a re-babbited wear-ring in the stuffing-box of turbine L-3.
  • Frank A. Banks Collection
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  • East Bank Bedrock
  • Drilling & boring machinery; Cranes; Excavation; Diversion weirs
  • Shown here are workers drilling to expose sound bedrock for grouting and then construction of the foundation of the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • East Bank Bedrock
  • Drilling & boring machinery; Cranes; Excavation; Diversion weirs
  • East abutment with Construction Trestle emerging from bedrock. In the back are the beginnings of form construction and pouring of the East side blocks of the Grand Coulee Dam. In fore ground are workers drilling down to stable bedrock.
  • Frank A. Banks Collection
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  • Cleaning Drill Holes
  • Drilling & boring machinery; Excavation
  • These workers are clearing out the bore holes from the bedrock foundation of the Grand Coulee Dam with compressed air.
  • Frank A. Banks Collection
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  • Removing Unstable Bedrock
  • Drilling & boring machinery; Excavation
  • Workers removing unstable bedrock from east bank foundation area of the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • Removing Unstable Bedrock
  • Drilling & boring machinery; Excavation
  • Drilling off unstable bedrock from the top part of the foundation for the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • Removing Unstable Bedrock
  • Drilling & boring machinery; Excavation
  • Removing unstable bedrock on the side of the East bank excavation area.
  • Frank A. Banks Collection
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  • Grout Sealing Bedrock
  • Drilling & boring machinery; Excavation
  • Workers using pressurized grouting machines to grout the east bank bedrock foundation in preparation to pour the first blocks of the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • Drilling Blast Holes
  • Drilling & boring machinery; Excavation
  • Workers using jackhammers to drill holes in loose bedrock in preparation for blasting.
  • Frank A. Banks Collection
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  • Removing East Bank
  • Drilling & boring machinery; Excavation
  • Workers removing unstable bedrock material to expose clean and sound bedrock for pouring exposed portions. Notice depth rods laying around as workers remove them upon reaching the appropriate depth.
  • Frank A. Banks Collection
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  • "Concore" Drilling Machine
  • Drilling & boring machinery
  • Core samples told inspectors, engineers, and project planners information regarding foundation strength, excavation levels, and even the best sites suited for construction of Grand Coulee Dam, Power plant, and related facilities.
  • Frank A. Banks Collection
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  • Wall of Generator Pit
  • Power plants--dams--Washington (State)--Grand Coulee Dam; Drilling & boring machinery; Employees--Washington (State)--Grand Coulee Dam
  • West wall of L-8 generator pit, through which workmen are cutting an opening for the penstock of a Shasta turbine. The wall was first drilled, then the center section will be blasted. Photo of workmen operating chippings guns.
  • Frank A. Banks Collection
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  • Excavation at East End of Grand Coulee Dam
  • Drilling & boring machinery; Dam construction; Excavation
  • Photograph of excavation at the east end of the Grand Coulee Dam.
  • Frank A. Banks Collection
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  • East Pier for Highway Bridge
  • Bridges; Construction; Rivers; Drilling & boring machinery
  • Photograph of preparations for construction of the east pier highway bridge crossing the Columbia River at the Grand Coulee Dam site.
  • Frank A. Banks Collection
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  • Diamond Drilling
  • Drilling & boring machinery; Construction employees--Washington (State)--Grand Coulee Dam
  • A photograph showing a government worker drilling uplift pressure holes into the bedrock with a air-driven Sullivan Turbinair diamond drill.
  • Frank A. Banks Collection
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  • Drilling Rigs at Grand Coulee Dam Site.
  • Dam construction; Dams; Drilling & boring machinery; Construction
  • Diamond Drill rigs used to core sample the bottom of the Columbia River to plan for laying of Cofferdam and Grand Coulee Dam foundations.
  • Frank A. Banks Collection

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