Frederick H. Nelson

K. Langosch

K. Langosch worked in the Instrument Section at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.

Daniel J. Keefe

Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

S. Kuehn

Edward M. Rauh

Edward Rauh worked for the Kellex Corporation at the K-25 Plant.