John L. Sherwood

G. C. Chappell

Chappell worked in the United States Engineer District Office.

J. S. McMahon

William “Bill” J. Knox

William “Bill” J. Knox was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

A. C. Crymble

A. C. Crymble worked for the Tennessee Eastman Corporation at the Y-12 Plant.