National Museum of Nuclear Science & History
Robert Parks worked for the United States Engineer District Office.
Henry Jarrell, Jr. worked for the Kellex Corporation at the K-25 Plant.
Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. R. Van Wazer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
