National Museum of Nuclear Science & History
Julian N. Bernacchi had three main assignments in the Manhattan Project. The most significant was as the Security Officer of Dr.
Leighton B. Ewell served in the 393rd Bombardment Squadron.
Harold Riley was an American chemical engineer. After graduating from North Carolina State College, Riley began his career working as a rayon technician at the DuPont Company.
Stanley G. Thompson was an American chemist responsible for the bismuth phosphate separation process used in the production of plutonium at the Hanford site during the Manhattan Project.
