Senji Yamaguchi, a survivor of the atomic bombing of Nagasaki and a leading figure in Japan's anti-nuclear movement, died at a hospital in Nagasaki Prefecture on Saturday, his family said. He was 82.

Yamaguchi, who sustained keloid scars at age 14 when the U.S. A-bombed the city on Aug. 9, 1945. He was working as a member of a student corps at a Nagasaki weapons factory at the time of the bombing.

He joined the anti-nuclear arms movement in 1955. Yamaguchi later served as one of three chairmen of the Japan Confederation of A- and H-Bomb Sufferers Organizations for 29 years through 2010.

Speaking at the United Nations second special session on disarmament in 1982, he appealed to the international community to ensure that nuclear attacks never occur again.

"No more Hiroshimas, no more Nagasakis, no more war, no more hibakusha (A-bomb survivors)," he told the session.