Thomas L. Heddy

J. E. Travis

J. E. Travis worked for the United States Engineer District Office.

Thomas V. Warnick

John J. Norton

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

Karl Walther

Karl Walther was a glassblower for Columbia University and Brookhaven National Laboratory. During the Manhattan Project, Walther worked as a senior glassblower at the Nash Garage Building at Columbia, where scientists developed the gaseous diffusion process.