National Museum of Nuclear Science & History
Haines worked at the 100-B Area at Hanford during the Manhattan Project.
Mason worked in the 300 Area at Hanford during the Manhattan Project.
Crawford Greenewalt (1902-1993) was an American chemical engineer. He was one of the managers of the Manhattan Project for DuPont.
A. E. Cameron worked for the Tennessee Eastman Corporation at the Y-12 Plant.