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This section provides an overview of the history of the Manhattan Project, the key organizations involved, the science behind the bomb, and more.
Fuller Lodge on the Los Alamos Site, 1942

Civilian Displacement: Los Alamos, NM

To build the Los Alamos Laboratory, the Army took over the land of two dozen homesteaders, the Los Alamos Ranch School, and the Anchor Ranch.
Early Road Conditions in Oak Ridge (1942)

Civilian Displacement: Oak Ridge, TN

During the Manhattan Project, about 3,000 families and farmers from rural Eastern Tennessee were displaced for new research and development sites.
Joe-1 nuclear test

Cold War

The Cold War began shortly after WWII and plunged the world into a series of conflicts that would last more than forty years.

Combined Development Trust

The Combined Development Trust (CDT) was an effort spearheaded by General Leslie Groves to control the world market of uranium ore.
J. Robert Oppenheimer, John Von Neumann, and the MANIAC computer. Courtesy of the Shelby White and Leon Levy Archives Center, Institute for Advanced Study (IAS). © Alan Richards.

Computing and the Manhattan Project

The development of early computing benefited enormously from the Manhattan Project’s innovation.
Enola Gay - Smithsonian Institute Archives

Controversy over the Enola Gay Exhibition

For the 50th anniversary of the end of World War II, the National Air and Space Museum proposed a controversial exhibition that displayed the Enola Gay.

Corporate Partners

Perhaps one of the most intriguing stories to come out of the Manhattan Project was the partnerships formed by the military, the scientific community, and some of America's foremost corporations.
Hiroshima's financial district after the bombing

Debate over the Bomb

One of the greatest controversies to come out of World War II was whether the atomic bomb was necessary to bring about its end.
The mushroom cloud over Nagasaki

Debate over the Bomb: An Annotated Bibliography

A list of books and articles provide a range of perspectives on the atomic bombings.