Curt J. Havekotte

S. J. Helfman

S. J. Helfman worked for the J.A. Jones Construction Company.

John Carroll

R. H. O’Brien

O'Brien worked for Stone and Webster Engineering Corporation.

Stephen Kasunic

Stephen Kasunic was a mechanical engineer. He worked on the Manhattan Project at Los Alamos, as a design engineer in the Weapons Experimental Experimental Physics (W-1) group on the steering committee for the gun-type bomb assembly.