National Museum of Nuclear Science & History
Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.
J. D. Renfroe worked for Clinton Laboratories at the X-10 Reactor.
Raymond Ledford worked for the Tennessee Eastman Corporation at the Y-12 Plant.
W. T. Sergeant worked for the United States Engineer District Office.