National Museum of Nuclear Science & History
J. H. Marsh worked for the Kellex Corporation at the K-25 Plant.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.
Betsy Stuart worked as a secretary for the electrical engineering department at Hanford. Her husband, Charles F.
H. B. Malter worked for the Edenfield Electric Company.
