National Museum of Nuclear Science & History
Philipp Klein was a part-time switchboard operator in the SAM Lab while studying chemical engineering at Columbia University.
Hoyt Nelson worked for Clinton Laboratories at the X-10 Reactor.
Harvey Grove worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.
