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Rio makes logical half-a-billion investment at century-old copper operation

Second underground mine investment at Kennecott in past nine months

Michael Quinn
Rio makes logical half-a-billion investment at century-old copper operation

The US$498 million investment is targeting an initial reserve of three million tonnes grading 2.4% copper, 1.8 grams per tonne gold (plus silver and moly) at an area called North Rim Skarn, and follows...

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