National Museum of Nuclear Science & History
John Leahy worked for the United States Engineer District Office.
Graf worked at the 300 Area at Hanford during the Manhattan Project.
Leonard Motichko worked as a part of Project Alberta, the team that transported and assembled the two atomic bombs in August 1945.
Julius “Osty” Ostspowicz was a glassblower in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
