National Museum of Nuclear Science & History
Fred Sexton worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Irvin Mastin worked for the J.A. Jones Construction Company.
Irene Balawender was a stenographer in the Instrument Section at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Leon Leventhal was a nuclear chemist and radiation expert who worked at Oak Ridge, the University of Chicago’s Met Lab, and Los Alamos Laboratory during the Manhattan Project.
