8780_hoover_dam

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8780_hoover_dam

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1990s

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Time-lapse of the sun rising over the Hoover dam.

1032

1930s

President Roosevelt dedicates Boulder Dam (Later Hoover Dam)

10883

1930s

Headline reads ‘Begins six- year work at the Hoover Dam’. Workers standing…

1940s

This clip shows imagery from World War 2 in the United States, Germany,…

1950s

1950s scientist talking about atomic energy. CU on a glass of water and LS…