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Six people hurt in gas explosion Six people hurt in gas explosion
(20 minutes later)
A gas canister has exploded at an industrial site in Hertfordshire, leaving six people injured.A gas canister has exploded at an industrial site in Hertfordshire, leaving six people injured.
Ten fire crews, along with police and ambulances, were called to an area near the Mundells in Welwyn Garden City at 1500 GMT. Fire crews, ambulance and police were called to a building believed to be the Herts Data Centre at the Mundells in Welwyn Garden City at 1500 GMT.
A Hertfordshire Fire Service spokesman said crews are tackling a building fire and there are gas canisters inside A Hertfordshire Fire Service spokesman said 10 crews are tackling the fire and there are gas canisters inside.
Six people, one with life-threatening injuries, have been taken to the Queen Elizabeth II Hospital in the city.Six people, one with life-threatening injuries, have been taken to the Queen Elizabeth II Hospital in the city.
The Mundell one way system has been closed.The Mundell one way system has been closed.
An East of England Ambulance Services spokesman said one of the people taken to hospital had non-threatening injuries and four were described as "walking wounded".
One person is believed to be unaccounted for.