National Museum of Nuclear Science & History
Haigh worked at the 100-F Area at Hanford during the Manhattan Project.
Groom worked at the 300 Area at Hanford during the Manhattan Project.
George Mallinckrodt was a physicist at the Manhattan Project’s Los Alamos, NM facility. He also worked at Argonne National Laboratory, the successor of the University of Chicago’s Metallurgical Laboratory (“Met Lab”).