National Museum of Nuclear Science & History
S. C. Welliever worked for the United States Engineer District Office.
Cronholm worked at the 100-F Area at Hanford during the Manhattan Project.
John Mihalkanin was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
L. M. Leach worked for the Tennessee Eastman Corporation at the Y-12 Plant.
