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The Hoover Dam Project: 50 Years to the Day

July 7, 2010 / 6:48 PM EDT / CBS News

U.S. Dept. of the Interior

Depression-Hungry jJob Seekers Flocked to the Project

U.S. Dept. of the Interior

Thousands came looking for work,when it was announced that Hoover Dam construction was to begin.

High Scalers Drilling into Canyon

U.S. Dept. of the Interior

Early Construction in Black Canyon

U.S. Dept. of the Interior

Jumbo Rig Allowed for Multiple Drillers to Work Together

U.S. Dept. of the Interior

Tunnel Entrance

U.S. Dept. of the Interior

Concrete Lining for Tunnel

U.S. Dept. of the Interior

River Bed Excavation

U.S. Dept. of the Interior

Powerhouse Construction

U.S. Dept. of the Interior

Letting Things Settle

U.S. Dept. of the Interior

Upstream Face

U.S. Dept. of the Interior

Finished

U.S. Dept. of the Interior

Hoover Dam Today

U.S. Dept. of the Interior

Hoover Dam at Night

U.S. Dept. of the Interior

Jet Flow Gate Testing

U.S. Dept. of the Interior

Aerial View of the Dam