Rio tinto changes to mineral resources and ore reserves

Melbourne, australia--(business wire)--rio tinto today announced to the australian securities exchange (asx) the following changes to estimates of mineral resources and ore reserves: mineral resources and ore reserves at rio tinto's pilbara iron ore deposits in western australia; mineral resources and ore reserves at rio tinto aluminium (rta) pacific operations' weipa and gove assets in australia; and mineral resources at the kennecott copper operation in utah. the updated estimates will be inc
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