National Museum of Nuclear Science & History
H. C. Young worked for the Tennessee Eastman Corporation at the Y-12 Plant.
James Jensen was a machinist at Hanford, Washington from September 1944 to the end of the war. Jensen's security clearance allowed him to machine parts and complete various tasks for the maintenance of the nuclear piles.
Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.
Conce Vigil was a staff worker at Los Alamos during the Manhattan Project.
Thomas Mitchell worked for the Tennessee Eastman Corporation at the Y-12 Plant.