Jul 16, 2026 – 9.47amBHP’s copper production will slide by up to 15 per cent in the year ahead, challenging an investment narrative that has driven its shares to record highs this year.The global miner revealed on Thursday that an unexpected mechanical failure at one of its South Australian mines would compound an expected decline in the quality of ore it produces in Chile.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles