National Museum of Nuclear Science & History
W. T. Simpson worked for the Roane-Anderson Company.
Helen J. Arson was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
W. B. Savage worked for the H. K. Ferguson Company.
Robert J. Moon (1911-1989) was a physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project and a signer of the Szilard petition.
