Arthur V. Peterson

Arthur Vincent (Pete) Peterson (31 October 1912 – 24 March 2008) was a United States Army colonel who served as the Manhattan District's Chicago Area Engineer. In this capacity he was responsible for the Metallurgical Laboratory, which developed the first nuclear reactors. Plutonium bred in these reactors was used in the Fat Man atomic bomb that was dropped on Nagasaki. He traveled to Europe before D-Day to warn General Dwight D. Eisenhower about the dangers of the Germans using radioactive weapons.

Arthur V. Peterson

Arthur Vincent (Pete) Peterson (31 October 1912 – 24 March 2008) was a United States Army colonel who served as the Manhattan District's Chicago Area Engineer. In this capacity he was responsible for the Metallurgical Laboratory, which developed the first nuclear reactors. Plutonium bred in these reactors was used in the Fat Man atomic bomb that was dropped on Nagasaki. He traveled to Europe before D-Day to warn General Dwight D. Eisenhower about the dangers of the Germans using radioactive weapons.