National Museum of Nuclear Science & History
Lew Kowarski was a Russian-born French physicist. He worked as part of the team that discovered that neutrons were emitted in the fission of uranium-235 in the 1930s, setting the groundwork for the use of nuclear chain reactions in the design of the atomic bomb.
Francis Durham served in the 1st Ordnance Squadron.
Spear worked at the 200 East Area at Hanford during the Manhattan Project.
Bucko worked in the United States Engineer District Office.