Hudbay, Vale and the Tantalum Mining Corporation will field teams and the fourth will consist of a mix of mine rescue personnel from the three mining operations.
This four-part documentary series profiles an existence in which the Virgin boss has repeatedly gambled his financial security – and even his life. But is it worth celebrating?
Mercilessly bullied as a boy and blown up by a car bomb as a man - Neil Spencer s biggest battle was still yet to come 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.