William J. McGraw

H. L. Smith

H. L. Smith worked for the Roane-Anderson Company.

H. A. Ramsey

H. A. Ramsey worked for the Tennessee Eastman Corporation at the Y-12 Plant.

W.A. Noehren

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.