National Museum of Nuclear Science & History
F. I. Irwin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Paul J. Esterline was an engineer. He attended Ohio State University for two years, and then attended the Chicago Technical Institute in the late 1920s, learned engineering drafting there.
Beth Olds was a secretary at the University of Chicago Met Lab and at Oak Ridge, Tennessee. After the war, she became executive secretary for the Emergency Committee of Atomic Scientists and the Atomic Scientists of Chicago, publishers of the Bulletin of the Atomic Scientists.
Sue G. Norton was a junior physicist in the Health Division at the University of Chicago Met Lab.