Edwin M. Bell

Paul J. Cummings

Cummings worked for Stone and Webster Engineering Corporation.

Seymour Calvert

Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.

J. Arthur Widmer

Arthur Widmer worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Edward G. McAndrew