--80,000 people were killed instantly

--Out of the city's 55 hospitals, only 3 were usable after the blast.

--90% of all doctors and nurses in Hiroshima were killed or injured

--Radiation claimed many more lives after the bomb was dropped.

--48,000 out of 76,000 buildings were destroyed.

--The initial heat blast was 900 times hotter than the sun.

--Bodies were vapourised underneath the bomb blast.

--By 1950, 200,000 people had died as a result of the bomb.

--Between 1950 and 1980, a further 97,000 people died from cancers associated with the radiation caused by "Little Boy".