National Museum of Nuclear Science & History
Johnstone worked at the 300 Area at Hanford during the Manhattan Project.
Julian Mack was an American physicist. Mack was the leader of Group G-11 (Optics), the photography group, in the Weapons Physics Division at Los Alamos during the Manhattan Project.
Britton worked at the 100-B and 100-F Area at Hanford during the Manhattan Project.
