Matthew A. Guszak

W. O. Nelson

W. O. Nelson worked for the J.A. Jones Construction Company.

Melvin L. Dietrich

Melvin L. Dietrich worked as a welder and electrician in a number of facilities across the Oak Ridge, Tennessee facility.

Helen E. Krinek

Helen E. Krinek was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Jessie L. Thompson