On this day in 1930, construction of the Hoover Dam begins. Over the next
five years, a total of 21,000 men would work ceaselessly to produce what
would be the largest dam of its time, as well as one of the largest manmade structures in the world.

Although the dam would take only five years to build, its construction was
nearly 30 years in the making. Arthur Powell Davis, an engineer from the
Bureau of Reclamation, originally had his vision for the Hoover Dam back
in 1902, and his engineering report on the topic became the guiding
document when plans were finally made to begin the dam in 1922.

Arthur Powell Davis
(February 9, 1861 – August 7, 1933)

Construction Site for Hoover Dam – Black Canyon.

The "Superflag" (255ft x 505ft) once held the title of the largest flag
in the world and was displayed over Hoover Dam to commemorate
the 1996 Olympic Torch Relay.