To put this in perspective, the U.S. Department of Energy estimates that the country has 187 trillion cubic ft of natural gas reserves.

FORBES

The United Downs tip is 15m (49ft) deep and has a volume of 250, 000 cubic metres (8.8m cubic ft) - the equivalent of 125 Olympic-sized swimming pools - but the council predicts it will be full by 2010.

BBC: NEWS | UK | England | Cornwall | Waste disposal restrictions start

Around 150 people were injured, with many receiving burns, by the spill of up to 700, 000 cubic metres (24.7m cu ft) of red toxic sludge.

BBC: Hungary builds wall to slow possible new sludge wave

Around 150 people were injured by the spill of up to 700, 000 cubic metres (24.7m cu ft) of red toxic sludge - many receiving burns.

BBC: Hungary fears new leak from toxic sludge reservoir