National Museum of Nuclear Science & History
Ralph McElroy worked for the Kellex Corporation at the K-25 Plant.
Leonard Orr served in the 1395th Military Police Company, Aviation.
R. G. Hester worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Edward F. Kolley was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
