Japan marked the 65th anniversary of the US atomic bombing of Hiroshima today with the United States represented at the ceremony for the first time. A peace bell tolled at 8:15 a.m., the time the bomb was dropped by the US B-29 warplane Enola Gay on August 6, 1945. Thousands of elderly survivors, children and dignitaries held a minute of silence under the burning summer sun. Hiroshima Mayor Tadatoshi Akiba said in a speech that the urgency of abolition of nuclear weapons is permeating our global conscience. White doves were released marking the ocassion.