National Museum of Nuclear Science & History
H. A. Killebrew worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Frank R. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Robert E. Krug, Jr. served in the 393rd Bombardment Squadron.
Thomas Waling was a staff worker at Los Alamos during the Manhattan Project.