National Museum of Nuclear Science & History
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
R. A. Coster worked for the Union Carbide & Carbon Corporation.
Dimas Chavez was a young child when he moved to Los Alamos with his family in August 1943. Chavez’s father, Trinidad, joined the Zia Company at Los Alamos, where he helped construct and maintain the laboratories and facilities there.
C. D. Cowan worked for the Tennessee Eastman Corporation at the Y-12 Plant.
