National Museum of Nuclear Science & History
P. D. Simpson worked for the Poe Piping & Heating Company.
Lawrence H. Johnston was an American physicist. After receiving his bachelor’s degree in physics from the University of California, Berkeley in 1940, Johnston followed his mentor Luis Alvarez to MIT.
Ned McWherter served in the 1st Ordnance Squadron.
Otto Hillig was a Danish machinist who helped work on various projects in the early days of the Manhattan Project.
