Indonesia's circle on the map above stands for a single plant: the Manyar refinery in East Java, operated by PT Freeport Indonesia, with 480,000 tonnes a year of capacity, according to the International Copper Study Group. It has been shut since the fourth quarter of 2025, after a mudflow at the Grasberg mine cut off its concentrate supply, and is due to restart this month at below 30% of capacity.

Copper has spent 2026 setting records, touching an intraday COMEX high of $6.71 per pound on May 13 amid AI-driven demand and supply shocks, against a backdrop where the ICSG now forecasts a 150,000-tonne deficit for 2026. In a market this tight, where the deficit thesis turns on lost tonnes, the question of where the world's copper actually comes from carries unusual weight.

Copper has spent most of 2026 doing something it had not done in a quarter century: setting fresh records every few weeks. The COMEX contract printed an intraday all-time high of $6.71 per pound on May 13, and the May monthly close looks set to land at the top of the historical chart. In London, copper traded above $14,000 per tonne in mid-May, touching $14,196.50, within reach of the LME's January 29 record of $14,527.50.

Copper futures touched an all-time high above $6.58 per pound on May 12, 2026, capping a 40.86% gain over the prior twelve months as supply tightness collided with structural demand from grid build-out, electric vehicles, and AI data centers. Earlier in the year, the LME benchmark rallied 22% to a record $13,387 per tonne on January 6, 2026. Behind the price action lies a less-discussed story: what it actually costs the world's largest miners to pull a pound of copper out of the ground.