National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
William Johnson worked for the United States Engineer District Office.
H. L. Patterson worked for the Union Carbide & Carbon Corporation.
Mary Karraker worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Walter Selander served in the 1395th Military Police Aviation.