Smoke billows from a secondary blaze at a recycling centre in Worksop, nearly three weeks after firefighters were first called.
Firefighters are still in attendance at Nottinghamshire Recycling Limited, on Shireoaks Road.
The material currently burning is mostly wood chippings. It is in a different location to the original fire and they are not thought to be linked.
Residents in the area are advised to keep all doors and windows closed due to smoke.