National Museum of Nuclear Science & History
Arnold Grubbe (1904-2002) was an engineer working for the civilian contractor Crane Company in Oak Ridge, Tennessee.
George Kehl was a metallurgist and professor at Columbia University’s School of Mines. He worked at Los Alamos on the Manhattan Project.
Charles Blanchard worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Jim Johnson was an ordnanceman at Los Alamos from 1944 to 1945. He was born on January 8, 1926, and started work at the Naval Ordnance Test Station at China Lake, Califiornia in 1944.