National Museum of Nuclear Science & History
Ethal Moonan was a staff worker at Los Alamos during the Manhattan Project.
Bruno Yurgaites was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Helene Smith was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Roy Greenlee was a chemist at the University of Chicago Metallurgical Lab and at Oak Ridge, Tennessee.
Wright Langham was an American biochemist and one of the foremost experts on plutonium. After completing his Ph.
