Truman F. Browder

Wills T. Brady

Frank R. Johnson

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

R. W. Beachley

Beachley worked for Stone and Webster Engineering Corporation.

J. C. Groom

Groom worked at the 300 Area at Hanford during the Manhattan Project.