Marvin D. Martin

Frances S. Dubberly

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.

H. E. Ostdahl

Ostdahl worked in the 200 West Area at Hanford during the Manhattan Project.  

E. H. Halbrook

E. H. Halbrook worked for the J.A. Jones Construction Company.