The High Scalers of Hoover Dam
Clip: Season 11 | 2m 33s
People came from across the country to witness the construction of Hoover Dam. One worker's daughter compared the scene to a hill of ants. "It was just fantastic to watch... It was a monument task," she said. During the dam's construction, the job of the high scaler was by far the most dangerous, as well as the most dramatic.