National Museum of Nuclear Science & History
H. H. Denny worked for the H. K. Ferguson Company.
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.
Celia Ryan was a staff worker at Los Alamos during the Manhattan Project.
Donald Engelkemeior was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.