Wes Pollnow Hoover Dam Bridge clip #4
6:18
Added: 5 years ago
From: MUSTIE101
Views: 15,189
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  • this is so amazing im a geography and engineering nerd lol. do these men wear safety harnesses?

    Holly9108 3 years ago

  • Thanks so much for posting these-

    Shows the difficulties of working concrete in the canyon- imagine how the workers who built the dam must have felt...

    Asiirah 4 years ago 4

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