Otto C. Block, Jr.

Melvin L. Dietrich

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

Casmer Lesnioski

Casmer Lesnioski worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J. L. Williams

C. K. Jensen

Jensen worked for Stone and Webster Engineering Corporation.