Firefighters worked into the early hours to save a recycling plant from going up in flames in Sheffield.
The blaze at Monkton Rubber Technologies, Stevenson Road, Attercliffe, was discovered by workers at 10pm on Thursday.
A machine which crushes old tyres into rubber pellets overheated and caught fire.
Flames then spread upwards to an air filtration unit.
Firefighters wearing breathing apparatus entered the smoke-filled factory and extinguished the blaze – preventing flames from spreading to other areas.
At the height of the blaze there were around 40 firefighters at the scene, five engines and an aerial ladder platform.
A total of 10 employees were evacuated while the firefighting operation was under way but most of the factory was up and running again yesterday.
Station manager Stewart Nicholson said: “Due to the quick actions of the firefighters we prevented the fire from spreading to other parts of the unit, the roof and to surrounding buildings.
“Employees were back at work in the majority of the building within a matter of hours.
“There were a large number of firefighters involved because access was difficult and there was a large amount of smoke.
“They acted quickly and professionally to contain it.”