National Museum of Nuclear Science & History
A. J. MacDonald worked for the Union Carbide & Carbon Corporation.
Melvin S. Friedman was an associate chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Henry Jarrell, Jr. worked for the Kellex Corporation at the K-25 Plant.
W. O. Nelson worked for the J.A. Jones Construction Company.
