A team from the University of Sheffield has calculated the strength of the blast based on the videos and photographs which have emerged since the disaster.
This is about a tenth of the intensity of the Hiroshima nuclear bomb but far bigger than any blast from a conventional weapon.
“If correct, that would mean this explosion had perhaps 10 per cent of the intensity of the Hiroshima bomb.
“Whatever the precise charge size, this is unquestionably one of the largest non-nuclear explosions in history – far bigger than any conventional weapon.”.
Thousands of people were injured by the blast, which damaged or destroyed an undetermined number of buildings.
The European Union was activating its civil protection system to round up emergency workers and equipment from across the 27-nation bloc.
The Czech Republic, Germany, Greece, Poland and the Netherlands were taking part in the effort, with other countries expected to join. »