No decision has been reached on the future of the Unity Mine at Cwmgwrach in the Neath Valley - despite a second day of talks.
There are fears that as many as 150 jobs are under threat - that's three quarters of the total workforce.
Wayne Thomas, from the National Union of Mineworkers, told ITV News talks will remain 'ongoing' with senior management figures over the next few days.
More top news
This evening will stay cloudy but dry and the night will be mild and humid across the country.
An ITV News investigation has revealed the worrying scale of contamination and pollution in our rivers from farm waste.
Workers at Bridgend's Ford factory will take strike action over concerns for the plant's future.