Men who worked at night on the dam suffered less, but the heat was still as high as thirty degrees Celsius.

VOA: special.2009.08.12

Before he was president, Mister Hoover worked for many years to make the construction of the dam possible.

VOA: special.2009.08.12

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

VOA: special.2009.08.12

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

VOA: special.2009.05.17

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.

VOA: special.2009.08.12

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

VOA: special.2009.05.10

He said the dam should be built in an area called Boulder Canyon on the border between the states of Arizona and Nevada.

VOA: special.2009.08.12

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.

VOA: special.2009.05.17

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

VOA: special.2009.08.12

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

VOA: special.2009.08.12

It was a picture of a new dam being built in the western state of Montana.

VOA: special.2009.05.17

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

VOA: special.2010.10.27

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

VOA: special.2009.08.12

Engineers decided the rock would provide a good strong support for the proposed dam.

VOA: special.2009.08.12

They built a large road from Boulder City to the area of the dam.

VOA: special.2009.08.12

The small shapes of two men at the bottom showed the dam's huge size.

VOA: special.2009.05.17

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

VOA: special.2009.08.12

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

VOA: special.2009.08.12

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

VOA: special.2009.08.12

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

VOA: special.2009.08.12

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

VOA: special.2009.08.12

They had used almost four million cubic meters of concrete in the dam.

VOA: special.2009.08.12

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

VOA: special.2009.08.12

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

VOA: special.2009.03.04

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

VOA: special.2009.03.04