National Museum of Nuclear Science & History
S. J. Helfman worked for the J.A. Jones Construction Company.
George Tom Fike was a corporal in charge of recreation at Los Alamos. As part of the Army Recreation Department, he also operated the radio station at Los Alamos with Bob Porton.
O'Brien worked for Stone and Webster Engineering Corporation.
J. J. Haynie worked for the J.A. Jones Construction Company.