National Museum of Nuclear Science & History
Harvey Grove worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Roy D. Kuhner served in the 1st Ordnance Squadron.
O. R. "Big" Simpson was a second lieutenant in military intelligence in charge of convoys carrying plutonium from Hanford to Fort Douglas, Utah.
