John P. Wittemore

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.

R. McKeon

E. D. Petty

Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.  

Margaret E. Swank

Margaret Swank served in the Women’s Army Corps at Los Alamos during the Manhattan Project.