National Museum of Nuclear Science & History
J. W. Rudd, Sr. worked for the Roane-Anderson Company.
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
R. F. Warren worked for the United States Engineer District Office.
Joseph (J.) Garrott Allen was a research associate in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
