National Museum of Nuclear Science & History
Casimer J. Borkowski was the group leader of the Instruments and Physical Measurements Group for Clinton Laboratories at the X-10 Reactor.
Michael Cefola was an American chemist and a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Harold Hoover was a member of the Special Engineer Detachment during the Manhattan Project. He worked as a filter foreman at the Y-12 Plant, but his real job was in counterintelligence, to ensure no sabotage occurred.
