National Museum of Nuclear Science & History
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.
Francis Birch (1903-1992) was an American geophysicist. In 1942, Birch worked at the MIT Radiation Lab, which was tasked with radar development.
Willingham worked at the 200 West Area at Hanford during the Manhattan Project.
