National Museum of Nuclear Science & History
Warren Watrous worked for the United States Engineer District Office.
Colonel Arthur “Pete” V. Peterson was the Army’s area engineer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Walter Morris worked for the Oak Ridge Recreation and Welfare Association.
