National Museum of Nuclear Science & History
George Riggenbach was a staff worker at Los Alamos during the Manhattan Project.
Sonia Weiner Katz was a secretary in the Chemistry Division of the Chicago Met Lab during the Manhattan Project.
Eldred C. “E.C.” Nelson (1917-2008) was an American physicist. Not long after arriving at the University of California, Berkeley to study physics, Nelson was recruited by his professor, J.
Fredrick “Fred” D. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.