4 dead in UK sewage treatment works explosion

A photo showing the damage to a silo following an explosion

Source: © Ben Stansall/AFP/Getty Images

One person injured as biosolids silo explodes at Avonmouth

An explosion at a wastewater treatment works in Avonmouth, UK, has left four workers dead and one more injured. Three of the dead were employees of Wessex, water, which runs the site, and the fourth was a contractor.