National Museum of Nuclear Science & History
E. F. Allen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Gastkill worked at the 100-D Area at Hanford during the Manhattan Project.
J. Robert Oppenheimer (1904-1967) was an American theoretical physicist. During the Manhattan Project, Oppenheimer was director of the Los Alamos Laboratory and responsible for the research and design of an atomic bomb.