Tunneling Begins for Access to Chuquicamata Underground
The principal access tunnel to the Chuquicamata underground mine will be 7.5 km long. Development will include five ventilation intake ramps and two exhaust ramps. Horizontal and vertical develop-ment will total 121 km.
With production scheduled to begin in 2018, Chuquicamata underground will produce 140,000 mt/d of ore and yield 340,000 mt/y of fine copper and 18,000 mt/y of fine molybdenum. Development is based on reserves of 1.7 billion mt grad-ing 0.7% copper and 502 ppm molybde-num. Along with Codelco’s El Teniente mine, Chuquicamata underground will be one of the world’s largest underground mining operations.