Total production reached 483,800 tonnes of copper content during September, up from 478,200 tonnes a year earlier.
Output during the January-September period came to 4.24 million tonnes, slightly down from 4.25 million tonnes in the corresponding period last year.
Codelco produced 145,300 tonnes of copper content in September, up 7.5% year-on-year, according to Cochilco figures.
Growth...