National Museum of Nuclear Science & History
M. W. Mills worked for the Union Carbide & Carbon Corporation.
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.
Thomas Trevena worked for the Kellex Corporation at the K-25 Plant.
C. H. Smith worked for the J.A. Jones Construction Company.