National Museum of Nuclear Science & History
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.
Brockman was at Los Alamos during the Manhattan Project.
Charles Shinpock worked for the Tennessee Eastman Corporation at the Y-12 Plant.
