H. S. Strandholm

E. H. Geil

Morton David

Morton David was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Jack L. Callan

Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Lawrence Sperry

Lawrence Sperry worked for the United States Engineer District Office.