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But President Roosevelt did little based on this letter, and instead only allocated a tiny $6,000 for such a project. Over two years passed without progress. It was not until Dec. 6, 1941, the day before Pearl Harbor, that an all-out effort to build an atomic bomb began under the direction of General [[Leslie Groves]]. This was what became known as the Manhattan Project.
But President Roosevelt did little based on this letter, and instead only allocated a tiny $6,000 for such a project. Over two years passed without progress. It was not until Dec. 6, 1941, the day before Pearl Harbor, that an all-out effort to build an atomic bomb began under the direction of General [[Leslie Groves]]. This was what became known as the Manhattan Project.
Groves was bold and willing to spend money. When scientists and engineers were unable to decide which of three approaches to producing the fissile material needed to build the bomb, he decided that if nobody could tell which was best, the thing to do was try all three methods. Huge manufacturing facilities were built at Oak Ridge, Tennessee and Hanford, Washington. Assuming that fissile material would be ready, a full-scale effort to design and build the bombs themselves was begun at the remote desert location of Los Alamos. The scientific and engineering efforts at Los Alamos were led by the scientist [[Robert Oppenheimer]].
Groves was bold and willing to spend money. When scientists and engineers were unable to decide which of three approaches to producing the fissile material needed to build the bomb, he decided that if nobody could tell which was best, the thing to do was try all three methods. Huge manufacturing facilities were built at Oak Ridge, Tennessee and Hanford, Washington. Assuming that fissile material would be ready, a full-scale effort to design and build the bombs themselves was begun in spring 1943 at the remote desert location of Los Alamos. The scientific and engineering efforts at Los Alamos were managed by the [[J. Robert Oppenheimer]].
The first completed bomb was tested on July 16, 1946 at a location code-named "Trinity."
The first completed bomb was tested on July 16, 1945 at a location code-named "Trinity."
'''Sources:''' <references/>
'''Sources:''' <references/>