Namesake project in the Antofagasta region now has measured and indicated oxide resources totalling 200 million tonnes grading 0.45% copper for 900,000 tonnes of metal.

Zeta Resources, which owns 9.96% of Copper Mountain, and Mitsubishi Materials, which owns 25%, have signalled their approval.

On-warrant copper stocks in LME registered warehouses climbed to a six-month peak.

Proceeds will help advance La Plata copper-silver-gold-PGE project in Colorado.

Asian smelters ramped up capacity amid a lack of matching mining projects in the pipeline.

The company can verify four more viable mining pits in its flagship Sierra Gorda copper and molybdenum mine.

The miner, whose shares collapsed this week on the closure of its Minto copper-gold mine in Canada, has engaged insolvency advisers.

Colombia-focused explorer has made four notable discoveries, including the Apollo high-grade porphyry system.