National Museum of Nuclear Science & History
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Attended the Ohio State University.
Visger worked at the 300 Area at Hanford during the Manhattan Project.
Anna Cox worked out of the DuPont Chambers Works plant in Carneys Point, New Jersey. Her contribution to the Manhattan Project included administrative work in the plant's transportation department, ensuring that tank cars had the proper bills of lading and ran in and out of the plant efficiently.
