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Photograph album, Henry Wieking Collection, circa late 1920s-early 1930s, page 15
Date
1925 to 1935
1905 to 1935
Description
Captions: View showing a section of sheet piling in the upper cofferdam; Diversion tunnel #4 - a hole 50 ft. in dia. surrounded by 3 ft. of concrete - Hoover Dam, Oakes 229; Reclamation truck.
Image
Photograph of people standing inside a 30 foot penstock pipe, Hoover Dam, Nevada, circa 1930s
Date
1930 to 1939
Archival Collection
Description
Black and white photograph of people standing inside a 30 foot penstock pipe (These pipes were used in the diversion tunnels in the construction of Hoover Dam.)
Image
Postcard of Colorado river, 1931
Date
1931
Archival Collection
Description
Illustration on a postcard of giant tunnels creating diversions for the Colorado River during the construction of Hoover Dam. The caption reads: "Diverting the Colorado River through giant tunnels."
Image
