National Museum of Nuclear Science & History
Irvin Mastin worked for the J.A. Jones Construction Company.
Robert Williams was a staff worker at Los Alamos during the Manhattan Project.
Smith worked at the 100-D Area at Hanford during the Manhattan Project.
Ralph Alexander Gardner-Chavis (1922-) is a chemist and pioneer of hard plastics who worked at the University of Chicago’s Met Lab during the Manhattan Project.
