National Museum of Nuclear Science & History
Attended Wayne University.
Sadler worked at the 100-B Area at Hanford during the Manhattan Project.
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.
Leon J. Vrana served in the 320th Troop Carrier Squadron.