National Museum of Nuclear Science & History
Pierce worked in the 200 West Area at Hanford during the Manhattan Project.
P. S. Wilcox worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Barrett worked for Stone and Webster Engineering Corporation.
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”).