John H. Noble

Earl F. Spring

Earl Spring was a staff worker at Los Alamos during the Manhattan Project.

Ernest A. Wende

Ernest Wende 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.

Robert Cramer

Walter J. Grundhauser

Walter J. Grundhauser was a research assistant the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.