National Museum of Nuclear Science & History
Jas Hoff worked for the United States Engineer District Office.
A. F. Tyra worked for the Union Carbide & Carbon Corporation.
Raymond Dujack was a young lab technician at the Special Alloyed Materials (SAM) Laboratories at Columbia University.
Lt. Col. James C. Stowers was an engineer in the Army Corps of Engineers and became the unit chief for the K-25 Gaseous Diffusion Plant.