On 9th August, 1945, American pilot Charles W Sweeney threw a nuclear bomb over the Japanese city of Nagasaki. 43 seconds later, his deadly cargo exploded in the air over the port city and turned the thriving city centre into a molten ruin. Up to 70,000 people lost their lives. The atomic bombs which were dropped on the two Japanese cities of Hiroshima and Nagasaki were the culmination of six years of horror.