National Museum of Nuclear Science & History
Collie worked in the United States Engineer District Office.
Pauline McGrath was a secretary at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
E. T. O'Conner worked for the Roane-Anderson Company.
Margaret M. Emmerson was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
