National Museum of Nuclear Science & History
L. A. Castellanos worked for the J.A. Jones Construction Company.
Ruth Rottman was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
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.
G. H. Killips worked for the Tennessee Eastman Corporation at the Y-12 Plant.
