Joseph F. Coleman Jr.

E. W. Seckendorff

Seckendorff worked for Stone and Webster Engineering Corporation.

Leroy H. Jackson

Leroy Jackson was transferred into the Manhattan District, the branch of the United States Army Corps of Engineers tasked with overseeing the construction of critical Manhattan Project sites, shortly after its formation in 1942.

John W. Burr

John W. Burr was a research assistant in the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.

Jack Wendell