Quick actions by fire crews prevented a fire at a Sudbury ink factory from getting out of control on Saturday morning.
A total of nine crews from Suffolk and Essex fire and rescue services tackled the blaze at Rockwood Pigments in Milner Road on the Chilton Industrial Estate, which started shortly after 7am.
The fire was under control by 9.30am but crews remained on the scene to dampen down the fire for several hours.
Will Tel, station commander for Suffolk Fire and Rescue Service, said: “The fire was initially outside the building and it did spread, but at no point was the inside of the structure affected as crews managed to contain it.
“It was a good job they did as otherwise it could have been really dangerous.
“There were seven tonnes of red oxide pigments inside and it would have caused a lot of trouble as it is flammable.”
Rockwood Pigments manufactures liquid, powder and granulated iron oxide as well as a wide range of other pigments used in products including paint, plastics, rubber and industrial uses.
Mr Tel said: “The quick actions of the crews meant the fire was contained.
“There were pockets of scorching inside the building but it didn’t cause any lasting damage.”
The fire is not being treated as suspicious but further investigations into how it was started are being carried out.