National Museum of Nuclear Science & History
DeRenzis worked in the United States Engineer District.
Robert Prunty (1921-2008) served in the Army at Los Alamos during the Manhattan Project, working as a machinist.
Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Gordon Smith was a chemical engineer in the 9812th Technical Service Unit of the U. S. Army Corps of Engineers Special Engineer Detacment at the Clinton Engineer Works in Oak Ridge.
