Code-named "Little Boy", the bomb was dropped over Hiroshima, Japan, on August 6, 1945, shortly before the end of the war.
Japan yesterday marked 72 years since the nuclear bombing of Hiroshima, with the nation's traditional contradictions over atomic weapons again coming into focus.
Traditionally, the minute of silence was announced exactly at 8:15 am local time at the moment when the first atomic bombing in the world was carried out on August 6, 1945.More news: Toyota's big future bets include robots, M&A and self-driving cars
In a speech delivered at an annual memorial ceremony, Matsui noted that 122 countries last month adopted a treaty banning nuclear weapons to demonstrate "their unequivocal determination to achieve abolition". Japan is the only country to have suffered atomic attacks, in 1945.
The Lord Mayor of Bradford, Councillor Abid Hussain, read a peace declaration from the Mayor of Hiroshima, Kazumi Matsui, at today's ceremony in Norfolk Gardens.
Guterres urged United Nations member states to intensify their efforts in the shared pursuit of a nuclear-weapons-free world.More news: Finding a Realistic Middle Way for the United States in Afghanistan
In his message to Hiroshima, UN Secretary-General Antonio Guterres said the presence of some 15,000 nuclear weapons, along with "dangerous rhetoric regarding their use", has exacerbated the threat they pose.
None of the nine countries that possess nuclear weapons took part in the negotiations or voted on the treaty.
In light of the Constitution, Hiroshima calls on the government to do all it can to bridge the gap between the nuclear weapon states and those that do not have such weapons to facilitate the treaty's ratification.More news: Google Updates Play Store Algorithms To Reward App Quality
Otherwise, the day passed off peacefully without the usual controversy of political leaders visiting the Yasukuni shrine where World War II military leaders of Japan are enshrined.