Hoover Dam construction began in 1931 with non-union ... The Golden Gate Bridge employed union workers, because construction began after the New Deal had begun to offer such protection.

THE completion, just announced, of the great concrete structure originally known as the Boulder Dam, but afterwards officially designated the Hoover Dam, across the Colorado River in Black Canyon ...

If you're planning things to do in Las Vegas, you may be considering a day trip to the Hoover Dam – the National Historic Landmark that diverts water from the Colorado River to various corners ...