National Museum of Nuclear Science & History
A. J. MacDonald worked for the Union Carbide & Carbon Corporation.
Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Evelyn O. Gaston was a laboratory technician in the Health Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Lennie Morrison served in the 1395th Military Police Company, Aviation.
