National Museum of Nuclear Science & History
Jas Huff worked for the United States Engineer District Office.
C. J. Metzler worked for the Roane-Anderson Company.
T. A. Gamble worked for Clinton Laboratories at the X-10 Reactor.
Alfred Simon was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Malvena Gilman was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.