Pacific · United States vs Japan
Atomic Bombing of Nagasaki
9 August 1945
The B-29 Bockscar, diverted from its primary target Kokura by cloud and smoke, dropped the plutonium bomb Fat Man on Nagasaki at 11:02. The hills confined the blast to the Urakami valley but some 40,000 people died immediately and about 70,000 by the end of the year. The Soviet declaration of war had come into effect a few hours earlier.
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Day by day
— 11:02
Bockscar made three runs over its primary target, Kokura, without sighting the aiming point through smoke and haze, and turned for its secondary with fuel for one pass. The plutonium bomb Fat Man, about 21 kilotons, was dropped through a break in the cloud at 11:02 and burst some 500 metres above Matsuyama-machi in the Urakami valley, three kilometres north-west of the planned aiming point over the harbour. The ridges confined the destruction to the valley, where the Mitsubishi works and the cathedral stood; about 40,000 people were killed at once and some 70,000 by the end of the year.