George W. Campbell

A. T. Helgerson

A. T. Helgerson worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Paul Laulotta

Paul Laulotta was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Harry Penninger

Henry Penninger served in the 393rd Bombardment Squadron.

L. Y. Henderson