National Museum of Nuclear Science & History
C. E. Bettis worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Lew Kowarski was a Russian-born French physicist. He worked as part of the team that discovered that neutrons were emitted in the fission of uranium-235 in the 1930s, setting the groundwork for the use of nuclear chain reactions in the design of the atomic bomb.
R. L. Kirk worked for the United States Engineer District Office.
Leon Cooper served as a 2nd lieutenant in the 393rd Bombardment Squadron. He was the bombardier regularly assigned to the B-29 Next Objective.