IT was 67 years ago this week when the first uranium bomb was exploded above Hiroshima with the force of 15,000 tons of TNT.

Tens of thousands were killed by the blast and fireball that engulfed the city. A similar number died of radiation sickness and injuries in the days and months that followed. In total, 140,000 died by the end of 1945. Three days later, Nagasaki was destroyed by a plutonium bomb.

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