National Museum of Nuclear Science & History
R. O. Irwin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Sara Sackron worked for the United States Engineer District Office.
H. L. Ray worked for the Kellex Corporation at the K-25 Plant.
John P. Hove was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
