National Museum of Nuclear Science & History
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Rolf Landshoff (1911-1999) was a German-American physicist. Soon after receiving a Ph.D. in engineering from the Institute of Technology in his native Berlin, Landshoff began to feel nervous about his place in his home country.
Joseph Murray was a staff worker at Los Alamos during the Manhattan Project.
