South Wales Fire and Rescue Service say the location of the fire is different from the blaze at the SiteServ Recycling Centre earlier this month.
86 firefighters are currently on site dealing with the fire and preventing any spread to the surrounding properties.
As a precaution, we ask the public and local businesses to be vigilant, as we move the necessary resources we require, around the site and utilise the water supplies we need.
It has been confirmed that there is no asbestos within the building but we also ask that people keep their windows and doors closed.
More top news
The Pride of Britain Awards are less than a month away, and today we find out who'll represent Wales in the Fundraiser of the Year category.
Police are appealing for information following a sexual assault on a 29 year old woman that took place in Pontllanfraith.
The personal tragedies and triumphs that have shaped his life. Terry Yorath: Life on the Edge, ITV Cymru Wales on Monday, 23 October (8pm).