Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Hist 140 hoover dam

  • Login to see the comments

  • Be the first to like this

Hist 140 hoover dam

  1. 1. Hoover Dam Andrew Lelja History 140 70979
  2. 2. Hoover Dam <ul><li>Hoover dam, once known as Boulder Dam, is a concrete anti-gravity dam built in the Black Canyon of the Colorado River, on the border between Nevada and Arizona. </li></ul><ul><li>The construction took place during 1931-1936, and involved thousands of workers and cost over a hundred lives. </li></ul><ul><li>It was dedicated by President Franklin Roosevelt on September 30, 1935. </li></ul>
  3. 3. Hoover Dam <ul><li>As the United States developed the Southwest, the Colorado River was seen as a potential source of irrigation water. </li></ul><ul><li>They looked at many potential site in the Lower Colorado area starting in the early 1900s, but realized the site’s were not the best. </li></ul><ul><li>In 1922 The Reclamation Service researched the Black Canyon area and wrote a report stating how this area would be ideal for a dam to produce hydroelectric power. </li></ul><ul><li>There were many who opposed the dam, and fought for years to not let it be built. </li></ul>
  4. 4. Hoover Dam <ul><li>Even before Congress approved the Boulder Canyon Project, the Bureau of Reclamation was considering what kind of dam should be used. </li></ul><ul><li>They decided on an anti-gravity dam, that would be 660 feet thick at the bottom, and tapering to 45 feet thick at the top. </li></ul><ul><li>It would present a convex face towards the water above the dam, allowing the curving arch of the dam to transmit the waters force into the rock walls of the canyon. </li></ul><ul><li>On January 10, 1931, the Bureau made the bid documents available to interested parties, at five dollars a copy. </li></ul><ul><li>The government would provide the materials, but the contractor was to prepare the site and build the dam. </li></ul>
  5. 5. Hoover Dam <ul><li>The Joint Venture called Six Companies, Inc., were the ones to build the damn. </li></ul><ul><li>The companies consisted of The Wattis Brothers, Morrison-Knudsen, Pacific Bridge Company, Henry J. Kaiser & W. A. Betchel Company, MacDonald & Kahn Ltd, and the J.F. Shea Company. </li></ul><ul><li>Their bid of 48,890,955 dollars was the lowest of three bids. </li></ul><ul><li>They built a new city at the dam site called Boulder City, Nevada, and this would be the main headquarters for the project. </li></ul><ul><li>In September of 1930, they built a railroad line connecting Boulder City to Las Vegas. </li></ul>
  6. 6. Citations <ul><li>Hoover Dam - Wikipedia, the free encyclopedia. (n.d.). Wikipedia, the free encyclopedia . Retrieved December 2, 2011, from </li></ul><ul><li>Photos. (n.d.). Hoover Dam Review . Retrieved December 2, 2011, from http:// </li></ul>