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The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the project was directed by Major General Leslie Groves of the U.S. Army Corps of Engineers. Nuclear physicist J. Robert Oppenheimer was the director of the Los ...
The Manhattan Project was a research and development project that produced the first atomic bombs during World War II. It was led by the United States with the support of the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the US Army Corps of Engineers. The Army component of the project was designated the Manhattan District ...
The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada.
The pre- Hiroshima nuclear history of the United States began with the Manhattan Project. This Manhattan Project was the nuclear program for warfare. Even before the first nuclear weapons had been developed, scientists involved with the Manhattan Project were divided over the use of the weapon. The role of the two atomic bombings of the country ...
The Manhattan Project was so secret that the Office of Censorship was not told about it until March 1943. Until the bombing of Hiroshima in August 1945, it helped keep the project secret by asking the press and broadcasters to voluntarily censor information they learned about atomic energy or the project.
British contribution to the Manhattan Project. James Chadwick (left), the head of the British Mission, confers with Major General Leslie R. Groves Jr. (right), the director of the Manhattan Project. Britain initiated the first research project to design an atomic bomb in 1941. Building on this work, Britain prompted the United States to ...
Szilárd petition. The Szilárd petition, drafted and circulated in July 1945 by scientist Leo Szilard, was signed by 70 scientists working on the Manhattan Project in Oak Ridge, Tennessee, and the Metallurgical Laboratory in Chicago, Illinois. It asked President Harry S. Truman to inform Japan of the terms of surrender demanded by the allies ...
Anti-nuclear movement. Anti-nuclear protests in the United States have occurred since the development of nuclear power plants in the United States. Examples include Clamshell Alliance protests at Seabrook Station Nuclear Power Plant, Abalone Alliance protests at Diablo Canyon Power Plant, and those following the Three Mile Island accident in 1979.