National Museum of Nuclear Science & History
Francis O’Sullivan worked for the United States Engineer District Office.
Harry Petcher's flat feet meant he couldn't be drafted, but still had an obligation to work for the war effort.
T. T. Metten worked for the United States Engineer District Office.
John P. McBride was a research assistant in the Chemistry Division at the Chicago Met Lab. He was later assigned to Oak Ridge, where he worked on plutonium purification and on isolating uranium-233 isotopes from thorium.
