National Museum of Nuclear Science & History
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”).
W. N. Sparke worked for the J.A. Jones Construction Company.
Milton Levenson (1923-2018) was an American chemical and nuclear engineer. Levenson was born in St. Paul, Minnesota in 1923 to Harry and Fanny Levenson.