National Museum of Nuclear Science & History
R. H. Duncan worked for the Comstock-Bryant Electric Company.
Severn A. Jackson served in the 1st Ordnance Squadron.
John Butler worked for the H. K. Ferguson Company.
Grace R. Harvey was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Attended Carnegie Techical Institute.
