Firefighters spent a third day at the scene of a huge blaze which ripped through an industrial estate - sending a mile high plume of smoke billowing into the sky.
Crew members continued to drench the Sheffield Reclaim recycling plant with water yesterday to try to ensure that hidden hotspots did not reignite.
The blaze on Sunday could be seen from as far away as Leeds and Doncaster at its height.
A mechanical digger was also brought onto the site to plough through the mountain of plastic which went up in flames, to ensure smouldering material underneath got soaked.
A fire service investigation into the cause of the blaze is still under way.
Yesterday police and fire service cordons blocking off Lumley Street and surrounding roads were lifted, allowing neighbouring businesses to re-open.
Two of them - City Wholesalers and White’s waste management and skip hire company - suffered severe damage in the blaze.
A third business, which firefighters initially feared had been damaged - Lynne’s Cafe - survived.
Until yesterday the only firm allowed to trade while the firefighting operation was in place was Veolia, which carries out the city’s bin collection service.
Gavin Waite, Veolia’s operations manager said: “Thanks to the actions of South Yorkshire Fire and Rescue Service, no damage occurred to either our properties or our fleet, which has meant only a minor disruption to the service.”
Station manager Simon Dunker, of South Yorkshire Fire and Rescue, said: “The investigation into what caused the fire is likely to take days - because of the extent of the fire damage. It is meticulous work and will involve the taking of lots of witness statements.
“We are working closely with South Yorkshire Police and the Environment Agency, which has a lot of information on the site.”