National Museum of Nuclear Science & History
Asa Swain worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Marselis Powell worked for the Union Carbide & Carbon Corporation.
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.
