Men in two special factories worked day and night to make the concrete building material for the dam.

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She wanted to tell the story of the people behind the industry: In this case, the people who were building the dam.

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In nineteen eighteen, a man named Arthur Davis proposed building a dam to control the Colorado River.

VOA: special.2010.10.27

They enter a special visitors' center to learn about the dam and the men who built it.

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It cannot be changed. The expression comes from the idea that water that has fallen over a dam cannot be brought back again.

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Bourke-White took pictures of those people C at the dam,in the rooms where they lived, and in the places where they had fun.

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Workers also used more than twenty million kilograms of steel to strengthen the concrete in the dam.

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Today,visitors can see a statue of the men who worked as high scalers to build Hoover Dam.

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The official name of the Hoover Dam bypass is the Mike O'Callaghan-Pat Tillman Memorial Bridge.

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It was agreed this could be more easily done with the aid of a dam.

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Many visitors say they thought the name of the huge structure was Boulder Dam.

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Visitors leave the great dam with an understanding of how difficult the project was.

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Workers built a town called Boulder City to house employees working on the dam.

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This had to be done so the floor of the dam could be built.

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Workers called "high scalers" were some of the first to begin building the dam.

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Visitors to Hoover Dam drive on a small road that passes Lake Mead.

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Many others were injured. The Hoover Dam is two hundred twenty-one meters tall.

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At the time, it was the largest and tallest dam in the world.

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She took pictures of the country's largest bridge, and the world's largest dam.

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A great deal of work was done before operations started on the dam.

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Slowly the great dam began to rise from the floor of the canyon.

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This provided electric power to the area where the dam was being built.

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Hoover Dam also created Lake Mead, the largest man-made lake in America.

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However,ninety-six men lost their lives during the building of the great dam.

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They are told that Hoover Dam is often called Boulder Dam.

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DAM hopes to teach young people about their history and rights.

VOA: special.2009.11.25