National Museum of Nuclear Science & History
Stanley Robertson was a mechanical engineer in the Special Engineer Detachment serving at Oak Ridge, Tennessee.
Spofford G. English was an American chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) and Oak Ridge during the Manhattan Project.
John P. McBride was a research assistant in the Chemistry Division at the Chicago Met Lab. He was later assigned to Oak Ridge, where he worked on plutonium purification and on isolating uranium-233 isotopes from thorium.