National Museum of Nuclear Science & History
H. R. Chapman worked for the H. K. Ferguson Company.
Wayne Marshall was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
E.J. Reagan joined Mound Laboratory in August 1948, where he worked as a doctor. He was responsible for monitoring the health and safety of Mound's employees, and he remained there until he retired in 1988.
Ole G. Landsverk was a member of the health physics team at the University of Chicago Metallurgical Laboratory during the Manhattan Project.