George A. Porter

Frank Tartaglia

Frank Tartaglia was a staff worker at Los Alamos during the Manhattan Project.

E. B. Gundberg

Gundberg worked for Stone and Webster Engineering Corporation.

Sadelle T. Greenblatt

Sadelle T. Greenblatt was a research assistant in the Instruments Division of the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.

Russell L. Arnold