Crews are still at the scene of a fire at a County Durham warehouse three days after it started.
The fire started at the Stiller warehouse, which contained aerosol cans, in Newton Aycliffe on Friday.
Firefighters said there were still pockets of fire in the building after the roof collapsed and they were hoping to tackle them from aerial platforms.
Dozens of bags of sand will be used to prevent contaminated water running off into drains or watercourses.
Staff at the warehousing and distribution site were evacuated on Friday but no one was injured.
People living nearby were advised to stay indoors.
County Durham and Darlington Fire and Rescue Service said two crews and an aerial ladder were still at the scene on Sunday.
At the height of the fire, eight fire engines were there and the smoke could be seen for miles around.
The area around the factory was cordoned off over fears about exploding aerosol cans.
Once the fire is fully extinguished, Durham and Darlington Fire and Rescue Service said it would start investigating how it started.