National Museum of Nuclear Science & History
Stephen Lawroski was an American chemical engineer who worked on the Manhattan Project at the University of Chicago’s Metallurgical Laboratory from 1944-1946.
Mathias A. Klinger was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
H. B. Hansard, Jr. worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John W. Porter served as a lieutenant colonel in the 390th Air Service Group.
