From the Morgan Sweeney Photograph Collection (PH-00228). Unit A-4 turbine at the Hoover Dam, the boring mill in operation boring for lower stationary seal on September 17, 1951.
Virginia "Teddy" Fenton Photograph Collection on the Hoover Dam and Boulder City, Nevada
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Collection Number: PH-00022 Collection Name: Virginia "Teddy" Fenton Photograph Collection on the Hoover Dam and Boulder City, Nevada Box/Folder: Folder 03