Chile’s copper production declined 12.9% year-on-year to 423,623 metric tons in May 2026, following a 13.8% drop in April. The Mining Production Index fell 10.6% from a year earlier, weighed down by a 13.0% contraction in metallic mining, largely reflecting reduced copper extraction and processing. The downturn in output from Chile, the world’s largest copper producer, has heightened concerns about a tightening global copper supply.