National Museum of Nuclear Science & History
Wendell Countiss worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Benton worked at the 200 West Area at Hanford during the Manhattan Project.
Harold Tebo worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.