Shanghai copper hit its highest in nearly 25 months on Monday, while London copper scaled a 24-month high, on supply worries from top producer Chile due to a potential strike at a mine.
Copper raced to its highest levels since January this week as speculators piled into the market, betting on further disruptions in top producer Chile and firm demand from the biggest consumer China.
Chile's Codelco has halted work on a multibillion-dollar project to extend the life of its El Teniente mine as the copper producer strives to slow the spread of the coronavirus disease through its workforce, the state-owned mining company said.
Chilean copper miner Codelco said on Thursday it was suspending refinery and foundry operations at its sprawling Chuquicamata division to prevent further spread of the new coronavirus.
Chilean copper miners' unions called on Sunday for a re-evaluation of the operational continuity plans of the country's biggest miners during what they said was an alarming increase in coronavirus cases among workers.
The global copper market is headed for a surplus of between 200,000-300,000 tons in 2020, the head of the miner Antofagasta told Chilean media, with operation halts at some mines offsetting depressed demand due to the coronavirus pandemic.
The copper price is unlikely to rebound in 2020 even if trade tensions between the United States and China subside, the head of Chile mining trade union Sonami said on Tuesday.
Chile's gross domestic product grew 3.3 percent in the third quarter of 2019 compared with a year earlier, the central bank said on Monday. The market had predicted relatively strong growth during the July through September period, citing improving prospects for the country's all-important mining industry.
Chile's production of both copper and lithium jumped in August, even as the country's manufacturing production dropped 1.5% compared with the same month the previous year, government data showed on Monday.
Chile’s central bank slashed the benchmark interest rate by 50 basis points to 2% on Tuesday, the lowest in 9 years, citing a sputtering economy hurt by global trade tensions.