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 US states of Arizona and Nevada. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. The dam was controversially named in honor of 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 the 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.

Robert Arthur “Bob” Mould (born October 16, 1960) is an American musician, principally known for his work as guitarist, vocalist and songwriter for alternative rock bands Hüsker Dü in the 1980s and Sugar in the 1990s.

Born in Malone, New York, Mould lived in several places, including the Minneapolis-St. Paul area where he then attended Macalester College. There, he formed Hüsker Dü in the late 1970s, with drummer/singer Grant Hart and bass guitarist Greg Norton.

Hüsker Dü first gained notice as a punk rock group with a series of recordings on the independent label SST Records. One of the first 1980s underground bands to sign a contract with a major record label (Warner Bros. Records), Hüsker Dü found only moderate commercial success, but were later often cited as one of the key influences on 1990s alternative rock.

In the late 1980s, Hüsker Dü broke up acrimoniously amid members' drug abuse and personal problems. Mould and Grant Hart, the band's other songwriter and vocalist, still take occasional jabs at each other in the press, though the two revisited their Hüsker Dü back catalog together at a 2004 benefit concert for an ailing friend, the late Karl Mueller of Soul Asylum.