National Museum of Nuclear Science & History
C. H. Pearson worked for the Kellex Corporation at the K-25 Plant.
Ingri Prestbo worked for the United States Engineer District Office.
Hays worked in the United States Engineer District Office
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.