Interim Committee

The Interim Committee was a secret high-level group created in May 1945 by United States Secretary of War, Henry L. Stimson at the urging of leaders of the Manhattan Project and with the approval of President Harry S. Truman to advise on matters pertaining to nuclear energy. Composed of prominent political, scientific and industrial figures, the Interim Committee had broad terms of reference which included advising the President on wartime controls and the release of information, and making recommendations on post-war controls and policies related to nuclear energy, including legislation. Its first duty was to advise on the manner in which nuclear weapons should be employed against Japan. Later, it advised on legislation for the control and regulation of nuclear energy. It was named "Interim" in anticipation of a permanent body that would later replace it after the war, where the development of nuclear technology would be placed firmly under civilian control. The Atomic Energy Commission was enacted in 1946 to serve this function.

Stimson himself was chairman. The other members were: James F. Byrnes, former US Senator and soon to be Secretary of State, as President Truman's personal representative; Ralph A. Bard, Under Secretary of the Navy; William L. Clayton, Assistant Secretary of State; Vannevar Bush, Director of the Office of Scientific Research and Development and president of the Carnegie Institution; Karl T. Compton, Chief of the Office of Field Service in the Office of Scientific Research and Development and president of Massachusetts Institute of Technology; James B. Conant, Chairman of the National Defense Research Committee and president of Harvard University; and George L. Harrison, an assistant to Stimson and president of the New York Life Insurance Company. Harrison chaired the committee when Stimson was absent, but Byrnes, as the President's personal representative, was probably its most influential member.

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