K. L. Mallory

Arthur S. Olson

Arthur S. Olson was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J. C. Poole

H. R. Koonce

H. R. Koonce worked for the J.A. Jones Construction Company.

Lawrence B. Magnusson

Lawrence B. Magnusson was a research associate at the Metallurgical Laboratory at the University of Chicago.