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Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).

Related Wikipedia articles
Henry J. Kaiser
American industrialist (1882–1967)
Henry John Kaiser was an American industrialist who became known for his shipbuilding and construction projects, then later for his involvement in fostering modern American health care. Prior to World War II, Kaiser was involved in the construction industry; his company was one…Source: Wikipedia (CC BY-SA)
Hoover Dam
Dam in Clark County, Nevada, and Mohave County, Arizona, US
The Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, during the Great Depression, it was dedicated on September 30, 1935, by President Franklin D.…Source: Wikipedia (CC BY-SA)