From the Morgan Sweeney Photograph Collection (PH-00228). Hoover Dam Powerplant by the States switchyard area. Blasting for removal of overburden. Stamp on the back reads, "Photograph by Bureau of Reclamation BCP # 8155 Boulder Canyon Project Boulder City, Nevada."
Black and white image of the Hoover Dam tunnel construction site. There are four visible bridges over the Colorado River. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the Hoover Dam tunnel construction site. There are four visible bridges over the Colorado River. Note: Boulder Dam was officially renamed Hoover Dam in 1947.