National Museum of Nuclear Science & History
Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Ardis (Thomas) Monk was a research assistant and mathematician at the University of Chicago Met Lab, where she performed computations for Eugene Wigner’s theoretical physics group.
Queenabelle Syvester was a staff worker at Los Alamos during the Manhattan Project.
Donoghue worked in the United States Engineer District Office.