National Museum of Nuclear Science & History
Ray Mettelka worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Mildred Summers was a chemical technician at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Leo J. Czaja served in the 603rd Air Engineering Squadron.
Morris S. Kaplan was a Chemical Engineer for the Houdaille-Hershey Company in Decatur, Illinois. Kaplan was born in Massachusetts in 1921 and grew up in Chicago, Illinois.
Joe Muskin worked for the Roane-Anderson Company.
