CSPAN3 American History TV October 4, 2014
Begin construction. Nine a contract awarded in 1931, a combine of six Major Construction firms. Men and machines went to work to build this dam of unprecedented size. This modern Civil Engineering wonder. Reclamation engineers rushed to completion specifications, and design drawings. Crews at the dam site completed their surveys and investigations. Sender of mans determination to conquer the colorado reverberated between the sheer cliffs of black canyon as construction got underway. The first major task was to divert the river around the dam site. To do this, for tunnels, two on each side, wer...