National Museum of Nuclear Science & History
Marilyn Williams was a staff worker at Los Alamos during the Manhattan Project.
Mann worked in the 200 West Area at Hanford during the Manhattan Project.
Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.
Robert E. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Attended the University of Minnesota.
