The southeast corner of the immense 3,000 foot Grand Coulee cofferdam; Scope and content: Photograph from Volume Two of a series of photo albums documenting the construction of the Grand Coulee Dam and related work on the Columbia Basin Project. Full caption for this photograph reads: The southeast corner of the immense 3,000 foot Grand Coulee cofferdam; between the cell clusters will be seen the timber struts in the section now being excavated for placing the first concrete in the Grand Coulee Dam; overhead is a portion of the 3,500 foot suspension bridge for transporting sand and gravel fr
The southeast corner of the immense 3,000 foot Grand Coulee cofferdam; Scope and content: Photograph from Volume Two of a series of photo albums documenting the construction of the Grand Coulee Dam and related work on the Columbia Basin Project. Full caption for this photograph reads: The southeast corner of the immense 3,000 foot Grand Coulee cofferdam; between the cell clusters will be seen the timber struts in the section now being excavated for placing the first concrete in the Grand Coulee Dam; overhead is a portion of the 3,500 foot suspension bridge for transporting sand and gravel from the mixer stock piles to west side mixing plant; the trestle crossing the Columbia River carries the conveyor transporting excavated material from the east side; in the near right hand foreground is the bedrock on which the big dam will be built - a bed of dense, solid granite known to be over 800 ft. thick. The Grand Coulee Dam across the Columbia River has a width at the base of 500 feet; will be 550 feet high from its foundation and 4,300 feet long, containing over 11,000,000 cubic yards of concrete.
Size: 5041px × 3967px
Photo credit: © Alpha Stock / Alamy / Afripics
License: Licensed
Model Released: No
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