Discussions between mine owners and union representatives are taking place today to discuss the number of redundancies to be made at the Unity Mine in Cwmgwrach.
ITV News has been told as many as 150 miners could lose their jobs.
An announcement is expected this afternoon.
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Aaron Ramsey has told his English team-mates at Arsenal to beware Wales overtaking them in the FIFA rankings.
Plenty of fine dry weather to come today and prolonged spells of sunshine. A cool easterly breeze will take the edge off the temperatures.
The three-day event in the Welsh capital is expected to attract more than 20,000 visitors.