The Mineração Rio do Norte (MRN) mine in Porto Trombetas, northern Brazil opened in 1979.

It is the country’s largest bauxite mine, with an installed capacity of 18 million tonnes of bauxite per year, currently producing 12.5 mtpy.

MRN is a joint venture owned by Rio Tinto (22%), South32 (33%), and Glencore (45%).

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