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Rio Tinto's quarterly copper production amounted to 139,300 tons
Rio Tinto’s production report showed that copper production was 139,300 tons in the first quarter of this year, an increase of 65% year-on-year, and a 6% decrease from the previous quarter; refined copper production in the first quarter was 56.10 million tons, an increase of 48% year-on-year, and 25% month-on-month.