Today in History: Hoover Dam construction began in 1930
85 years ago today, construction of the Hoover Dam began. Between 1930 and 1935, a total of 21,000 men built the world’s largest dam of its time. The $49 million project was also one of the largest manmade structures in the world. Hoover Dam was dedicated on September 30, 1935 by President Franklin D. Roosevelt.