National Museum of Nuclear Science & History
H. W. Ross worked for the Tennessee Eastman Corporation at the Y-12 Plant.
H. V. Appen worked for the J.A. Jones Construction Company.
Mathis worked for Stone and Webster Engineering Corporation.
Richard McNamara served as a 2nd lieutenant in the 393rd Bombardment Squadron of the 509th Composite Group.
Philip C. McKenna was a laboratory assistant the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
