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Gold once lured prospectors to the American west – but now it’s cobalt that is sparking a rush.
Cobalt mining has not happened at any sort of scale in the United States for decades.
But a handful of mining companies are now staking claims at sites in Idaho, Montana and Alaska in search of the silvery blue mineral.
They are striking
This post was originally posted on BBC News. Read the rest of the story at https://www.bbc.co.uk/news/business-44732847.