The Baker shot of Operation Crossroads, Bikini Atoll, July 25, 1946.  As the spray column collapses a 900-foot-tall "base surge" of radioactive mist envelops the target ships.  Ship in the foreground (left) is the Japanese battleship Nagato.
Anonymous military photographer
1946-07-25
W.A.Schurcliff, Historian, Joint Task Force One,<i>Bombs at Bikini: the Official Report of Operation Crossroads</i>, 1947, plate 28.