Mount St Helens eruption FEARS: Volcano expert warns ‘I have never seen ANYTHING like it’

On May 18, 1980, Mount St Helens blew in the US state of Washington. The eruption, which measured 5 on the Volcanic Explosively Index, has been declared as the most disastrous volcanic eruption in modern US history. A huge column rose 80,000 feet into the atmosphere and deposited ash in 11 states, killing at least 57 people and causing more than $1billion (£770million) in damage.