Einstein and several other scientists told Roosevelt of efforts in Nazi Germany to purify uranium-235, which could be used to build an atomic bomb. It was shortly thereafter that the United States Government began the serious undertaking known then only as "The Manhattan Project." Simply put, the Manhattan Project was committed to expediting research that would produce a viable atomic bomb.
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|Nuclear Chain Reaction||The first successful test of an atomic bomb||Little Boy - Atomic Bomb||B-29 Superfortress Enola Gay|
|Hiroshima in Ruins After Atomic Bomb||Model of Fat Man Atomic Bomb||Atomic Bomb Explosion over Nagasaki|
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