Cochilco lowered its average copper price prediction for this year by $0.03 to $2.97 per pound on Thursday in its second negative projection in six months.
The company said the expansion, to start in early 2019, would add an average 60,000 tonnes of copper a year to its production over the first 15 years of operation.
While the project known as S11D isn’t scheduled to hit its 90-million-ton capacity until 2020, China’s appetite for the mine’s low-cost, high-grade ore continues to grow.
Cavalcanti joins Samarco as it attempts to renegotiate billions of dollars in debt with creditors and restart operations after a tailing dam burst in 2015, killing 19 people.
Canada’s largest diversified miner has been looking for a development partner for the $4.8-billion extension of Quebrada Blanca copper mine in northern Chile.