National Museum of Nuclear Science & History
H. V. Appen worked for the J.A. Jones Construction Company.
Brooks worked at Los Alamos during the Manhattan Project.
Robert M. Haider served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
