Copper miners gain as China smelting curbs add to supply fears

** U.S.-listed shares of copper miners rise premarket, tracking higher prices of the red metal

** Benchmark three-month copper CMCU3 on the London Metal Exchange up 0.9% at $10,431.50 a metric ton

** Prices of copper, used in power and construction, touched $10,485 earlier in the session, the highest since May 2024

** Copper extends recent gains as proposed controls on smelting capacity in China exacerbated fears over supply after Freeport-McMoran FCX.N slashed its Indonesia mine production forecast

** Global mining giants Rio Tinto RIO.N up ~3% and BHP Group BHP.N up 4.5%

** Miners Southern Copper SCCO.N up marginally and FCX up 1.7%

** Canada's Hudbay Minerals HBM.TO, HBM.N up 1.5%, Ero Copper ERO.TO, ERO.N up ~2% and Teck Resources TECKb.TO, TECK.N up 1.9%