According to Mining News Pro - Cochilco said output at Chile state miner, the world’s top copper miner, rose 1.2% in the month versus the same period a year earlier, hitting 187,600 tonnes. That came after a steep drop in November impacted by riots in the country.

Production at BHP’s massive Escondida rose a steep 16% to 105,600 tonnes against a weak December a year earlier.

The Collahuasi copper mine in northern Chile, a joint-venture between Anglo American and Glencore , produced 56,500 tonnes in December, down 0.2%, the agency said.

Chile is the world’s top copper producer.