Carroll E. Brown

Ruth M. Rottman

Ruth Rottman was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.

John H. Rogers

John Rogers worked for the Tennessee Eastman Corporation at the Y-12 Plant.

E. S. Whittaker

Mathias A. Klinger

Mathias A. Klinger was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.