National Museum of Nuclear Science & History
D. Chelnik served in the 390th Air Service Group.
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.
R.C. Houlton was the Personnel Director at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.