Hubert Blonk Papers. SPC-006-0628-5-9-2
Black and white photograph
Scanned at 600 ppi TIFF format, resized to 72 ppi JPEG format.
Using air drills to prepare the bedrock for the foundation of Grand Coulee Dam.
Archives & Special Collections, Eastern Washington University Libraries.
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Grand Coulee Dam (Wash.); Hydroelectric power plants -- Washington (State); Dams -- United States -- Design and construction