National Museum of Nuclear Science & History
Howard Egan worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Mont J. Mickelson served in the 603rd Air Engineering Squadron.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Edna K. Marks was a junior biologist and technician in the Health Division at the University of Chicago Met Lab.
