Hoover Dam, once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. The dam was named after President Herbert Hoover.
Since about 1900, the Black Canyon and nearby Boulder Canyon had been investigated for their potential to support a dam that would control floods, provide irrigation water and produce hydroelectric power. In 1928, Congress authorized the project. The winning bid to build the dam was submitted by a consortium called Six Companies, Inc., which began construction on the dam in early 1931. Such a large concrete structure had never been built before, and some of the techniques were unproven. The torrid summer weather and lack of facilities near the site also presented difficulties. Nevertheless, Six Companies turned over the dam to the federal government on March 1, 1936, more than two years ahead of schedule.
Hoover Dam impounds Lake Mead, the largest reservoir in the United States by volume. The dam is located near Boulder City, Nevada, a municipality originally constructed for workers on the construction project, about 30 mi (48 km) southeast of Las Vegas, Nevada. The dam’s generators provide power for public and private utilities in Nevada, Arizona, and California. Hoover Dam is a major tourist attraction; nearly a million people tour the dam each year. The heavily travelled U.S. 93 ran along the dam’s crest until October 2010, when the Hoover Dam Bypass opened. Now know as Mike O’Callaghan–Pat Tillman Memorial Bridge.
Visiting Hoover Dam
The initial plans for the facade of the dam, the power plant, the outlet tunnels and ornaments clashed with the modern look of an arch dam. The Bureau of Reclamation, more concerned with the dam’s functionality, adorned it with a Gothic-inspired balustrade and eagle statues. This initial design was criticized by many as being too plain and unremarkable for a project of such immense scale, so Los Angeles-based architect Gordon B. Kaufmann, then the supervising architect to the Bureau of Reclamation, was brought in to redesign the exteriors. Kaufmann greatly streamlined the design, and applied an elegant Art Deco style to the entire project. He designed sculptured turrets rising seamlessly from the dam face.
At Kaufmann’s request, Denver artist Allen Tupper True was hired to handle the design and decoration of the walls and floors of the new dam. True’s design scheme incorporated motifs of the Navajo and Pueblo tribes of the region. Although some initially were opposed to these designs, True was given the go-ahead and was officially appointed consulting artist. With the assistance of the National Laboratory of Anthropology, True researched authentic decorative motifs from Indian sand paintings, textiles, baskets and ceramics. The images and colors are based on Native American visions of rain, lightning, water, clouds, and local animals -lizards, serpents, birds- and on the Southwestern landscape of stepped mesas. In these works, which are integrated into the walkways and interior halls of the dam.
Inside the Hoover dam where more than 7 million people walk and visit this massive structure, every year.
The Mike O’Callaghan–Pat Tillman Memorial Bridge is an arch bridge in the United States that spans the Colorado River between the states of Arizona and Nevada. The bridge is located within the Lake Mead National Recreation Area approximately 30 miles (48 km) southeast of Las Vegas, and carries U.S. Route 93 over the Colorado River. Opened in 2010, it was the key component of the Hoover Dam Bypass project, which rerouted US 93 from its previous routing along the top of Hoover Dam and removed several hairpin turns and blind curves from the route. It is jointly named for Mike O’Callaghan. Governor of Nevada from 1971–1979, and Pat Tillman, an American football player who left his career with the Arizona Cardinals to enlist in the United States Army and was later killed in Afghanistan by “friendly fire.”
The bridge was the first concrete-steel composite arch bridge built in the United States, and it incorporates the widest concrete arch in the Western Hemisphere. At 840 feet (260 m) above the Colorado River, it is the second-highest bridge in the United States, following the Royal Gorge Bridge. It is also the world’s highest concrete arch bridge. The Hoover Dam Bypass project was completed within budget at a cost of $240 million; the bridge portion cost $114 million (2010 prices).
It has been a lot of controversy on what happened to Pat Tillman who was kill in Afghanistan by a “friendly fire” for those who are more interested please follow the link bellow.
What Really Happened To Pat Tillman?
His Mother Tells 60 Minutes The Govt. Still Hasn’t Told The Whole Truth About Her Son’s Death
Aired May 1st 2008
Pat Tillman was a heroic face of the war on terror – an NFL star who left behind a $3.6 million contract and his new wife to fight for his country after the attacks of Sept. 11. When he died in Afghanistan on April 22, 2004, the Army told his family he’d been killed by enemy fire after courageously charging up a hill to protect his fellow Army Rangers.
But as Katie Couric reports, that story didn’t hold up. He had really been killed by friendly fire, shot accidentally by his fellow soldiers.
For the past four years, his family, led by his mother Mary, has been searching for answers about what really happened, beginning the day she heard the news from Pat Tillman’s wife Marie. You can read the full transcript at: