National Museum of Nuclear Science & History
P. D. Simpson worked for the Poe Piping & Heating Company.
R. F. Maness worked for the Tennessee Eastman Corporation at the Y-12 Plant.
James Jensen was a machinist at Hanford, Washington from September 1944 to the end of the war. Jensen's security clearance allowed him to machine parts and complete various tasks for the maintenance of the nuclear piles.
