Mumbai, June 25 -- The International Copper Study Group (ICSG) has stated in a latest update that Preliminary world copper mine production declined by 1.4% in the first four months of 2026, with a decline in concentrate production of -2.7% more than offsetting an increase in solvent extraction-electrowinning (SX-EW) of 3.5%. Although global mine production benefited from additional output from projects ramping up to capacity in a number of countries, global growth was offset by important declines in concentrate production in Chile, D.R. Congo (DRC) and Indonesia.
In Indonesia, concentrate production declined by 40% as output at the Grasberg mine remains constrained by the impact of a severe mud rush incident that occurred last September. C...