National Museum of Nuclear Science & History
Donald Mueller (1907-2004) was an American physicist. Mueller was born in Cincinnati. He earned a B.S.
Harvey Matthioson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Arnold joined the Manhattan Project in 1943 when the MED tasked his employer, the Kellogg Corporation, with developing a special barrier for the gaseous diffusion plant in Oak Ridge.