National Museum of Nuclear Science & History
Annen worked for Stone and Webster Engineering Corporation.
E. C. Harshbarger worked for the Roane-Anderson Company.
Marion Mandel was a laboratory technician in the Health Division at the University of Chicago Met Lab.
Gray worked at the 300 Area at Hanford during the Manhattan Project.
E. F. Hutchinson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
