National Museum of Nuclear Science & History
Hartman worked for Stone and Webster Engineering Corporation.
Raymond Lowrey worked at the Hanford, Washington site for the Manhattan Project from 1943 to 1948. Lowrey began his career in the Oklahoma Ordnance Works before moving to Hanford and settling in Richland, Washington after the war.
Lawrence B. Magnusson was a research associate at the Metallurgical Laboratory at the University of Chicago.
N. D. Woodall worked for the United States Engineer District Office.