National Museum of Nuclear Science & History
L. R. Zumwalt worked for the United States Engineer District Office.
Smith worked at the 100-D Area at Hanford during the Manhattan Project.
Helen Pellock (1926-1957) was a technician in the Chemistry Division of the Chicago Met Lab, working under Glenn Seaborg.
Waldo F. Christy was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
