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Rio dampens copper output expectations

Second copper guidance revision this year for major miner

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

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. Production for the first nine months of the year was down by...

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