J. C. Pack

Royal J. Richards

Francis L. Friedman

Francis L. Friedman was a theoretical physicist and group leader at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

H. A. McFadden

H. A. McFadden worked for the Roane-Anderson Company.

J. C. McLaughlin

McLaughlin worked in the 100 D Area at Hanford during the Manhattan Project.