Rio Tinto officially opened its Silvergrass mine in Western Australia on August 30. The $338 million Silvergrass project is the 16th mine at Rio Tinto’s iron ore operations and will produce low-phosphorous ore crucial to maintaining Rio Tinto’s premium Pilbara Blend product. Full commissioning is scheduled before the end of the year and the mine will add 10 million metric tons of annual production capacity to the company’s portfolio.

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