Wes Pollnow Hoover Dam Bridge Clip #4

  1. May 17, 2008 at 05:09 PM by Holly9108

    this is so amazing im a geography and engineering nerd lol. do these men wear safety harnesses?

  2. Sep 11, 2007 at 06:29 PM by Asiirah

    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...

  1. Rating: 16 ratings
    Views: 12,415
    Duration: 6:18
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