National Museum of Nuclear Science & History
Herbert Silverstone was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
W. G. Chmielewski was a carpenter at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
L. H. Roberts worked for the H. K. Ferguson Company.
Campbell worked at the 200 East Area at Hanford during the Manhattan Project.
