Homes near a huge tyre dump fire have been evacuated over fears of asbestos contaminated smoke.
Three asbestos sheds at Kirton near Boston have been alight since just after 1200BST on Thursday.
Emergency services evacuated 30 homes near the Wash Road site after tests found that 60% of the smoke contained asbestos particles.
Fire crews have said the fire is so fierce they will have to let it burn itself out, a process which could take two or three days.
Emergency advice
Eight engines, a chemical incident unit, the civil protection unit and the Environment Agency decontamination unit were at the scene.
About 60 firefighters have tackled the flames, which caused much of the warehouse site to collapse.
The nearby A16 was closed as flames leapt hundreds of feet into the sky, with smoke visible for 30 miles.
Fire officers advised those living in the area to stay indoors and keep their windows closed.
Those whose homes have been evacuated have been taken to the Kirton Town Hall.