Hoover Dam penstocks and outlet pipes such as this one were fabricated from 45,000 tons of steel and welded into nearly three miles of pipe varying from 8.5-30ft (2.6-9m) in diameter.

Hoover Dam penstocks and outlet pipes such as this one were fabricated from 45,000 tons of steel and welded into nearly three miles of pipe varying from 8.5-30ft (2.6-9m) in diameter.

Hoover Dam was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt.

Hoover Dam was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt.

 SMT does 4th of July  // Receive 20% off storewide + Free Detox Program (valued at $59) with all SkinnyMe Teatox purchases. At www.skinnymetea.c... // Just us the code ‘PINUSA’ at the checkout on the 4th of July

SMT does 4th of July // Receive 20% off storewide + Free Detox Program (valued at $59) with all SkinnyMe Teatox purchases. At www.skinnymetea.c... // Just us the code ‘PINUSA’ at the checkout on the 4th of July

1936 - View showing a Douglas DC-2 flying over Hoover Dam. Note the water level. From the collection of the San Diego Air and Space Museum  - Water and Power Associates

1936 - View showing a Douglas DC-2 flying over Hoover Dam. Note the water level. From the collection of the San Diego Air and Space Museum - Water and Power Associates

Hoover Dam. I flew over it going to Las Vegas, but we didn't visit. Next time.

Hoover Dam. I flew over it going to Las Vegas, but we didn't visit. Next time.

Hoover Dam VHS The Historic Construction ~Tour Of The Dam Today ~Lake Mead~ RARE

Hoover Dam VHS The Historic Construction ~Tour Of The Dam Today ~Lake Mead~ RARE

Interesting Dam Facts - History of Dams, Failure, Hoover Dam, Construction, Fun Trivia for Kids

Interesting Dam Facts - History of Dams, Failure, Hoover Dam, Construction, Fun Trivia for Kids

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