John L. Armstrong

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.

Mary Jean Weingart

J. K. Hill

Hill worked at the 100-D Area at Hanford during the Manhattan Project.

R. V. Pierce

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