$93bn a year needed for Africa infrastructure

A group of 21 Tanzanian nationals had alleged that Barrick was complicit in extrajudicial killings by police guarding its North Mara mine.

Greenland contains large deposits of most of the minerals considered critical by the US Geological Survey.

Employees of the Loulo-Gounkoto mine were detained amid the government's push for higher mining taxes.

McKinsey & Co. consultants say current downturn presents significant challenges, but it also offers a chance for reinvention.