![](http://www.alamy.com/thumbs/6/0576C7A3-24A3-45B5-AB49-5357D4EEB11F/TY0HM8.jpg)
Deep hole in block 40-A. Note the small amount of seepage water with the pump sump located about 100 feet from the cofferdam and 113 feet below the surface of the river.; 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.
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Photo credit: © Tango Images / Alamy / Afripics
License: Licensed
Model Released: No
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