National Museum of Nuclear Science & History
Louis Olivas was a staff worker at Los Alamos during the Manhattan Project.
Jacob Epting worked as a carpenter in Oak Ridge, TN from November 1942 to October 1943. While Epting assumed he was building a hospital, he was never formally told about the project he was working on.
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.
Pasquale Baldasaro was a radio operator aboard Straight Flush, one of the B-29 Superfortress aircraft that participated in the atomic bombing of Hiroshima.