National Museum of Nuclear Science & History
Barnes worked in the United States Engineer District Office.
Russell E. Gackenbach served as a 2nd Lieutenant in the 393rd Bombardment Squadron and in the 509th Composite Group.
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.
J. H. Leppert worked for the Tennessee Eastman Corporation at the Y-12 Plant.
