National Museum of Nuclear Science & History
P. D. Simpson worked for the Poe Piping & Heating Company.
Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.
Annibale Muscolo served in the 1st Ordnance Squadron.
Johnston worked at the 300 Area at Hanford during the Manhattan Project.
