The copper market has been jolted by disruptions at Indonesia’s Grasberg mine, with ripple effects spreading across supply forecasts and price expectations. With the mine operator declaring force majeure, Goldman Sachs slashed its mine supply outlook for 2025 and 2026, turning a projected surplus into deficit territory.“A prolonged disruption at the Grasberg mine could drive copper prices even higher, while intensifying supply challenges for smelters already facing feedstock shortages,” analysts at ING said ...