National Museum of Nuclear Science & History
Kenney worked for Stone and Webster Engineering Corporation.
O'Brien worked for Stone and Webster Engineering Corporation.
Raymond C. Grills is an American physical chemist who worked at the University of Chicago’s Metallurgical Laboratory and at Hanford during the Manhattan Project.
Harold B. Nilling was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
