National Museum of Nuclear Science & History
Hardleben worked at the 100-F Area at Hanford during the Manhattan Project.
Martha G. Johnson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Addie Saunders was a laboratory assistant in the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
R. N. Jernigan worked for the J.A. Jones Construction Company.
