National Museum of Nuclear Science & History
H. D. Lanterman worked for the Union Carbide & Carbon Corporation.
Norene Mann was a secretary at the University of Chicago Met Lab. She worked for Nobel laureate James Franck, but often also acted as a secretary for Leo Szilard.
W. J. Strickland worked for the Poe Piping & Heating Company.
Donald Francis Mastick was an American chemist who worked at Los Alamos and on Tinian as part of Project Alberta.