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Rio dampens copper output expectations

Rio Tinto (LN:RIO) has revised down its full-year copper guidance for the second time this year, due to lower grades, ramp-up delays and mine changes.

Rio dampens copper output expectations Rio dampens copper output expectations Rio dampens copper output expectations Rio dampens copper output expectations Rio dampens copper output expectations

Copper output dropped due to lower head grades at Oyu Tolgoi (pictured) and Kennecott

Lower head grades at its Kennecott and Oyu Tolgoi operations led to a drop in September quarter mined copper production to 120,600 tonnes.