National Museum of Nuclear Science & History
E. Berger worked for the Roane-Anderson Company.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Irene Balawender was a stenographer in the Instrument Section at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Dr. George Marshall Lyon was an American physician who assisted with radiation safety during the Manhattan Project.
