National Museum of Nuclear Science & History
Henry Fritz was a chemist in the Special Engineering Detachment assigned to the K-25 Plant in Oak Ridge, Tennesee.
William Hackman worked for the Tennessee Eastman Corporation at the Y-12 Plant.
C. Perry worked for the Roane-Anderson Company.
Richard Emanatian was with the military police detachment at Los Alamos during the war. He maintained secrecy through the rest of his life, and his family only found about his involvement long after his death.
