National Museum of Nuclear Science & History
R. R. Manganielo served in the 509th Headquarters and Base Services Squadron.
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.
Cunningham worked in the United States Engineer District Office.
Krazel worked in the 100 D Area at Hanford during the Manhattan Project.
