J. C. Hecker

Marie Cardwell

Marie Cardwell arrived in Oak Ridge in February, 1945. She was hired as the Document Librarian for the Y-12 Plant and held for the remainder of the Manhattan Project, and for several decades afterwards.

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.

Eugene Kraft

Robert S. Cole

Robert S. Coles was a research associate at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.