The atomic bombing of Hiroshima is being remembered in Oak Ridge, the once secret city that fueled that first nuclear weapon used in war.

Today marks the 63rd anniversary of the destruction of the Japanese city, a pivotal event that helped end World War II.

Peace activists from several states planned a morning ceremony to read names of some of the 60,000 to 100,000 people who died in the blast or from the radiation.

Their ceremony will be near the high-security gates of the Y-12 nuclear weapons plant, which supplied highly enriched uranium for the Little Boy bomb dropped on Hiroshima in 1945.