National Museum of Nuclear Science & History
Rosalyn Thomas was a staff worker at Los Alamos during the Manhattan Project.
Attended the University of Illinois.
Helen R. Hughes was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
O. R. "Big" Simpson was a second lieutenant in military intelligence in charge of convoys carrying plutonium from Hanford to Fort Douglas, Utah.
