History: Hoover Dam goes online in 1936

History: Hoover Dam goes online in 1936
On this day in 1936, the Hoover Dam went fully online and began generating electricity. Construction began in 1930 and lasted almost 6 years. A total of 21,000 men were needed to build the world’s largest dam of its time. The $49 million project is one of the largest manmade structures in the world.
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