Anglesey Aluminium Metal has confirmed it will close within the next two months, resulting in 60 jobs being lost.
It says there are "substantial losses" facing the business, from increased competition, material cost increases and a drop in demand for its products.
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Showers expected throughout the day especially in the north. Drier and brighter elsewhere but cooler than in recent days.
Most places will become dry overnight, although it will remain generally cloudy with patches of hill fog.
Police have told people in Pontypridd that the cordon around the rugby club could be in place until next week.