National Museum of Nuclear Science & History
R. H. Martin worked for the United States Engineer District Office.
John H. Harrington, Jr. served as a sergeant in the 393rd Bombardment Squadron.
Robert O. Nohr was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Bumpus worked at the 100-B Area at Hanford during the Manhattan Project.
