National Museum of Nuclear Science & History
H. R. Grady worked for the Tennessee Eastman Corporation at the Y-12 Plant.
L. D. Percival King was an American physicist. After receiving his Ph.D. in Physics from the University of Chicago, King became an instructor in the Physics Department at Purdue University.
John Arthur "Jack" Robinson was a machinist and instrument maker at the Clinton Engineering Works in Oak Ridge, Tennesse in 1943.
John Roberts was a staff worker at Los Alamos during the Manhattan Project.
