Rio Tinto Group - Wikipedia, the free encyclopediaRio Tinto is a British-Australian multinational and one of the world's largest metals and mining corporations. The company was founded in 1873, when a.rio tinto largest mining company,Rio Tinto, World's Second Biggest Mining Company, Warns Of Big .Feb 11, 2016 . Rio Tinto, the world's second biggest mining company, has reported a 51% fall in profit for 2015 and warned that continued low prices for most.Our business - Rio TintoBoyne Smelters Limited (BSL) is the largest aluminium smelter in Australia. Located . In Queensland, the company operates the Hail Creek and Kestrel mines.
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