National Museum of Nuclear Science & History
Ira Carpenter worked for the Edenfield Electric Company.
Howard “Howie” Wilcox was an American physicist. He studied at the University of Minnesota and was a teaching fellow at Harvard when he was recruited to work on the Manhattan Project at Los Alamos.
W. B. Caldwell worked for Clinton Laboratories at the X-10 Reactor.
Edward F. “Ed” Hammel was an American chemist. Hammel had just completed his Ph.D. at Princeton University when he joined a Canadian heavy water project sponsored by the school in 1941.
A. P. Schreiber worked for the United States Engineer District Office.