Tsutomu Yamaguchi

Tsutomu Yamaguchi (山口 彊, Yamaguchi Tsutomu) (16 March 1916 – 4 January 2010) was a Japanese marine engineer who survived and witnessed both the Hiroshima and Nagasaki atomic bombings during World War II. Although at least 160 people are known to have been affected by both bombings, he is the only person to have been officially recognized by the government of Japan as surviving both explosions.

A resident of Nagasaki, Yamaguchi was in Hiroshima on business for his employer Mitsubishi Heavy Industries when the city was bombed at 8:15 AM, on 6 August 1945. He returned to Nagasaki the following day and, despite his wounds, returned to work on 9 August, the day of the second atomic bombing. That morning, while he was being told by his supervisor that he was "crazy" after describing how one bomb had destroyed the city, the Nagasaki bomb detonated. In 1957, he was recognized as a hibakusha ("explosion-affected person") of the Nagasaki bombing, but was not officially recognized as a survivor of Hiroshima by the Japanese government until 24 March 2009. He died of stomach cancer on 4 January 2010, at the age of 93.