John J. Keyes

L. E. Johnston

L. E. Johnston worked for the United States Engineer District Office.

Earl J. Schaedig

V. Alexander Nedzel

V. Alexander Nedzel was a research assistant at the University of Chicago Met Lab. After the Manhattan Project, he worked at the Institute for Nuclear Studies and was head of the Aerospace Division at MIT Lincoln Laboratory.

Daniel J. Keefe

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