Atomic Bomb Cloud over Nagasaki
On August 9, 1945, the American B-29 bomber, Bock's Car left Tinian carrying Fat Man, a plutonium implosion-type bomb. The primary target was the Kokura Arsenal, but upon reaching the target, they found that it was covered by a heavy ground haze and smoke, pilot Charles Sweeney turned to the secondary target of the Mitsubishi Torpedo Plant at Nagasaki.
Of the 286,00 people living in Nagasaki at the time of the blast, 74,000 were killed and another 75,000 sustained severe injuries.
Source: National Archives