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A major blaze at a quarry is believed to have been caused by products overheating in a silo, firefighters have said.

Four fire engines helped to bring the blaze under control at Pant quarry in Halkyn, Flintshire, on Tuesday evening.

Residents, posting on social media, reported sounds of large blasts from the quarry.

But North Wales Fire and Rescue Service said there had been no significant explosions.

The fire was reported at around 16:20 BST with the last crew leaving the scene shortly before midnight.

Firefighters from Deeside, Flint, Wrexham and Cheshire said they dealt with the blaze using four engines, an aerial ladder platform, a foam carrier and a high volume pump.