Cara konfigurasi tor browser download. The Hoover Dam is a historical and engineering wonder of America, so check out 21 rare photos from it's construction in 1936. Mike O'Callaghan - Pat Tillman Memorial Bridge (Hoover Dam Bypass) The Central Federal Lands Highway Division of the Federal Highway Administration awarded us a contract to provide design and construction support services for the landmark Mike O'Callaghan - Pat Tillman Memorial Bridge.
Hoover Dam Specifications
Close-up of a section of Hoover Dam, 1942, by Ansel Adams. (NWDNS-79-AA-B04)As the Great Depression deepened in the early 1930s, a monumental civil engineering project known as the Boulder Canyon Project captured the nation's attention and stirred its imagination.Coming amid widespread poverty and unemployment, the massive project not only provided jobs to thousands of unemployed men but offered some of the most complex engineering challenges ever tackled. Perhaps as important, it asserted America's ability to overcome extreme adversity with technical ingenuity, physical prowess, and unwavering resolve.The project's goal: Build a huge dam— the largest ever built— across the Colorado River on the Nevada-Arizona border to harness the power and riches of the mighty river. Completed in 1936, Hoover Dam, through the generation of electricity and the orderly dispersal of its waters, fueled the incredible growth of southern California— its large cities, its industrial base, its massive agricultural industry— and created Lake Mead, the world's largest man-made reservoir.The construction saga and tremendous impact of Hoover Dam have been chronicled countless times over the past seventy years. Few people are aware, however, of the measures taken during World War II to maintain the dam's safety and very existence.Tucked among the myriad official government documents housed in the National Archives and Records Administration are a series of plain brown files marked 'confidential.'