National Museum of Nuclear Science & History
Attended Carnegie Technical Institute.
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.
Garner worked for Stone and Webster Engineering Corporation.
Jesse Kupferberg was a Technical Sargeant in the US Army who participated in Project Alberta, the group tasked with transporting and assembling the two atomic bombs in 1945.