Sunday, November 7, 2010


The cover name applied to the joint Anglo-American plan to develop an atomic bomb, derived from the Manhattan District headquarters of the U.S. Army’s Corps of Engineering, which had responsibility for the project when Gen. Leslie Groves was placed in charge of it in 1942. Security within the project, exercised by the U.S. Army, was so tight that initially even the Federal Bureau of Investigation was unaware of it.