Groves, head of the Manhattan Engineer District, selects Oak Ridge, Tennessee, site for facilities to produce nuclear materials. Uranium isotope separation facilities are built at Oak Ridge, Tennessee plutonium production reactors are built at Hanford, Washington and a weapons laboratory is set up at Los Alamos, New Mexico.īrigadier General Leslie R. The Army Corps of Engineers establishes the Manhattan Engineer District to develop and build the atomic bomb. The Army delegates the task to the Corps of Engineers. President Roosevelt instructs the Army to take responsibility for construction of atomic weapons complex. President Roosevelt approves production of the atomic bomb following receipt of a National Academy of Sciences report determining that a bomb is feasible. Roosevelt establishes the Office of Petroleum Coordinator for National Defense, later the Petroleum Administration for War, to issue rules governing the production, transportation, and distribution of petroleum and petroleum products. Seaborg’s research group at the University of California in Berkeley discovers plutonium. Einstein notes that Germany has stopped the sale of uranium and German physicists are engaged in uranium research. Roosevelt, alerting the President to the importance of research on nuclear chain reactions and the possibility that research might lead to developing powerful bombs. The German radiochemists Otto Hahn and Fritz Strassmann discover the process of fission in uranium.Īlbert Einstein writes President Franklin D.
Continue to Timeline of Events: 1951 to 1970
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