National Museum of Nuclear Science & History
Pfeiff worked in the 200 West Area at Hanford during the Manhattan Project.
Thaddeus Wysocki served in the 603rd Air Engineering Squadron.
Marvin Davis was a part of the Military Police at Los Alamos. He was a mounted MP at the Trinity site before, during and after the famous test.
Charles J. Spiegl was a civilian scientist employed by the Manhattan Project. He was involved in radiation toxicology, studying the effects of radiation on animals at the Trinity Site near Alamogordo, New Mexico.