6 fire appliances are still working to extinguish a blaze at a woodyard in Derby. Specialist equipment is also on scene.
The call was originally received at 10.30pm on Saturday evening.
A large plume of smoke is being blown, by the wind, into Nottinghamshire and it's expected to linger for several days.
The smoke fumes aren't thought to be dangerous.
Nottinghamshire Fire and Rescue have warned people to be aware of the smoke.
Fire crews have spent a fourth night tackling a blaze at a woodyard in Stanton-by-Dale, Derbyshire.
Fire Fighters continue to fight a fire that started at a recycling plant on Lows Lane in Stanton-by-Dale in Derbyshire.
7000 tonnes of wood have been burning at the site of the Old Iron Works in Stanton since around 10.00 last night (15 September).