National Museum of Nuclear Science & History
H. H. May worked for the J.A. Jones Construction Company.
Gray worked at the 300 Area at Hanford during the Manhattan Project.
David L. Hill was an associate experimental physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) 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.
A. H. Barrett worked for the Kellex Corporation at the K-25 Plant.
