National Museum of Nuclear Science & History
E. Lander worked for the Roane-Anderson Company.
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.
William S. Johnston was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
F. M. Tench worked for the Tennessee Eastman Corporation at the Y-12 Plant.