National Museum of Nuclear Science & History
George Riggenbach was a staff worker at Los Alamos during the Manhattan Project.
E. F. Allen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Jens Thornton, or “Jim” (as he went by at Berkeley) was an electrical engineer employed by Stone & Webster engineering firm during the Manhattan Project.
Herschel Warren was a staff worker at Los Alamos during the Manhattan Project.