National Museum of Nuclear Science & History
Bonnie Pauline Hardwick Rogers worked at the Y-12 Plant, operating the machinery separating the uranium isotope U-235 from it's heavier counterpart U-238.
Robert H. Byrd served as a staff sergeant in the 393rd Bombardment Squadron. He was the radio operator regularly assigned to the B-29 Some Punkins.
W. J. Cunningham worked for the Roane-Anderson Company.
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.