National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
Fred Atkinson worked for the H. E. Anning Company.
Warren Nyer (1921-2016) was an American physicist. Nyer was nineteen and studying physics at the University of Chicago when he was hired as a research assistant with the Office of Scientific Research and Development, an early part of the bomb-building program.
Malvena Gilman was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.