National Museum of Nuclear Science & History
John Black worked for the J.A. Jones Construction Company.
Barger worked in the United States Engineer District Office.
Madeleine Sciofo was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Fred D. Butler served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Laggin’ Dragon.
