Both tours begin with a 10-minute introductory film and include visits to the original construction tunnels ... departs at 3:45 p.m. Where: Hoover Dam Access Road, Boulder City.

The Bureau of Reclamation opens bids for the construction of Boulder (Hoover) Dam and Power Plant ... builders and designers of dams, bridges, roads, and tunnels. The winning bid was $48,890,995.

Meanwhile, Harry Kaiser, an ambitious young road builder from Oakland ... Six Companies’ construction of Hoover Dam was also significant in that it forged a bond between government funding ...