National Museum of Nuclear Science & History
Irvin Mastin worked for the J.A. Jones Construction Company.
J. H. Graham worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Michael H. Sylvia served in the 393rd Bombardment Squadron.
Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Myers worked for the Roane-Anderson Company.
