Abandoned coal mines of North Wales could heat homes once again dailypost.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailypost.co.uk Daily Mail and Mail on Sunday newspapers.
Floodwater from disused Welsh mines could be used to heat homes walesonline.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from walesonline.co.uk Daily Mail and Mail on Sunday newspapers.