J.E. Irwin

T. Meadows

T. Meadows worked for the Midwest Piping and Supply Company.

L.R. Riggs

Richard Sullivan

Richard Sullivan worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Fredrick “Fred” D. Johnson

Fredrick “Fred” D. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.