National Museum of Nuclear Science & History
Osterloh worked in the 100 F Area at Hanford during the Manhattan Project.
Magdaline Penny worked for the United States Engineer District Office.
Klaus Fuchs (1911-1988) was a German theoretical physicist and spy who worked at Los Alamos during the Manhattan Project and passed atomic secrets to the Soviet Union.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.