Firefighters have spent the night tackling a large fire at the Horwich Loco Industrial Estate, off Chorley New Road.
The fire involved a recycling plant, used for manufacturing bottle tops, and a large amount of plastic.
Station Manager Wayne Guffogg said: "Firefighters worked hard to contain the fire to the building involved and stop it spreading to neighbouring businesses.
"We worked with local businesses to re-open the roads on the industrial estate and allow workers to go about their day to day business."
Firefighters are dealing with a large fire at a recycling plant that broke out in Horwich.
Greater Manchester Fire and Rescue Service received a call at 12.26am on Thursday, February 27, 2014 to report the blaze on Chorley New Road.
Around forty fire fighters are tackling a large fire at a recycling plant near Bolton. Crews were called to Chorley New Road at half past midnight. People in the area are being asked to keep their windows and doors closed.