South Wales Fire and Rescue service will investigate what caused a blaze at a recycling plant on Newtown Industrial Estate in Cross Keys, Caerphilly.
The blaze broke out at GLJ Recycling. A spokesperson from the fire service said 700 tonnes of scrap metal and tyres are well alight.
4 pumps and a water bowser were in attendance at the scene, along with representatives from the Environment Agency.
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A wet Wednesday with plenty of cloud around