National Museum of Nuclear Science & History
H. T. worked for Clinton Laboratories at the X-10 Reactor.
H. G. Mullican worked for the J.A. Jones Construction Company.
Emma Tolmach was a technician in the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Carl C. Gamertsfelder was an American physicist who worked in the field of health physics during the Manhattan Project.