The Bureau of Reclamation opens bids for the construction of Boulder (Hoover) Dam and Power Plant. The contract is awarded to Six Companies, a construction and engineering firm made up of some of ...

The most dangerous phase of Hoover Dam's construction was building the diversion tunnels, two on each side of the Colorado River. Blasting holes 56 feet in diameter, three-quarters of a mile ...

Only water is allowed inside the buildings at Hoover Dam. How to dress for the Hoover Dam Tour? When visiting the Hoover Dam, it's best to dress comfortably and appropriately for the weather.