The development of clean energy technologies is driving up demand for metals such as copper, nickel and cobalt that mining companies say can be extracted from more than 600 feet below sea level.
Environmental groups call for moratorium on deep sea mining witneygazette.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from witneygazette.co.uk Daily Mail and Mail on Sunday newspapers.