National Museum of Nuclear Science & History
H. J. Mack worked for the Edenfield Electric Company.
Waverly Smith was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Irwin Phillips worked for the United States Engineer District Office.
Norman Elliott was a research associate in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Duffer Crawford worked for the civilian contractor Kellex Coroporation in New York under the supervision of Judson Swearingen.
