Gantry Crane transporting 4 cubic yard Rex motor mixers in pouring tunnel lining during the construction of Boulder Dam, now called Hoover Dam. Site Name: Hoover Dam (dam)
Black and white image of the construction phase of Hoover Dam. The metal framework seen at the base of the dam will later become the dam's powerhouse. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the construction phase of Hoover Dam. The metal framework seen at the base of the dam will later become the dam's powerhouse. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the construction phase of Hoover Dam. The metal framework seen at the base of the dam will later become the dam's powerhouse. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of an interior view of the Hoover Dam powerhouse under construction. Caption on bottom of image reads: "Interior of power house. Boulder Dam. Nevada." Boulder Dam was renamed Hoover Dam in 1947.
An image of a burro standing on rocks near Hoover Dam. Intake towers and the reservoir can be seen in the background. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of a burro standing on rocks near Hoover Dam. Intake towers and the reservoir can be seen in the background. Note: Boulder Dam was officially renamed Hoover Dam in 1947.