Men go back to working on their tasks during the construction of the Hoover Dam. The large steel object behind them could possibly be a large train engine, evident by the tracks on the concrete floor.
A building full of construction trucks and equipment in Boulder City, Nevada. The men are working on the construction of the Hoover Dam. Site Name: Hoover Dam (dam)
Two men near a train in Boulder City, Nevada while the train is hauling construction vehicles to be used for the Hoover Dam. Site Name: Hoover Dam (dam)