Black and white image of Black Canyon during the construction of Hoover Dam. Cable way elevators which transported the fathers of Hoover Dam to and from work can be seen, along with a pilot house on the Nevada side of the canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of excavation activities at the bed of Hoover Dam. High scalers can be seen displaying their clinging skills on the walls of the Black Canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image showing dynamite blasts being fired simultaneously for the locations of the Arizona (left) and Nevada (right) intake towers at Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image showing a downstream view of the Hoover Dam construction site from the lower slope of the upper cofferdam. The excavation for the base of the Nevada intake towers can be seen in the upper right. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Walker R. Young (right) and an unidentified individual standing beside a Department of the Interior/Bureau of Reclamation vehicle. Young was chief construction engineer on the Hoover Dam Project (Boulder Canyon Project) for the Bureau of Reclamation. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image showing an upstream view of Black Canyon from a point on its Nevada side, approximately a half mile below the Hoover Dam construction site. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the eight cubic yard capacity bucket discharging a load into the upstream face of Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.