National Museum of Nuclear Science & History
Thompson worked for Stone and Webster Engineering Corporation.
Marion Mandel was a laboratory technician in the Health Division at the University of Chicago Met Lab.
Lester Orlan Keen worked as an engineering draftsman at Hanford during the Manhattan Project. His son, Jack Keen, was a young boy at the time.
C. B. Foos worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Ralph A. James (1920-1973) was a research associate in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
