Capstone Copper (ASX:CSC) announced the sanctioning of the Mantoverde Optimized project in Chile for construction following all required board approval, according to a Monday Australian bourse filing.
The firm advanced the level of detailed engineering to around 40% completion, de-risking the project and increasing the degree of certainty in timelines and expansionary capital estimates, the filing said.
The company estimated that the Mantoverde Optimized sulfide concentrator expansion construction will require around one year, followed by a ramp-up period in the fourth quarter of 2026. The expanded sulfide throughput capacity of around 45,000 ore tonnes per day is expected to be sustained starting in early 2027.
Higher cathode production is expected to start in the second quarter of 2027.
Capstone Copper's shares rose nearly 5% in recent trading on Monday.
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