Anglo American said its merger with Teck Resources to form a copper-focused global metals and minerals champion is progressing, with China's antitrust approval the only remaining regulatory obstacle.
The FTSE 100 miner expects completion by March 2027, unchanged from previous guidance, with integration planning described as advanced.
Third-quarter copper production fell 5% to 174,900 tonnes, driven by record snowfall in Chile and lower ore grades at the Collahuasi joint venture.
Despite the weather disruption, Anglo trimmed its Copper Peru unit cost guidance sharply, to around 50 cents per pound from 65 cents, reflecting strong by-product credits and tight cost management.
Full-year copper production guidance is unchanged at 700,000 to 760,000 tonnes.
Premium iron ore output fell 4% to 13.8 million tonnes, as a planned shutdown at Kumba in South Africa more than offset improved plant availability at Minas-Rio in Brazil.
Anglo revised De Beers' diamond production guidance upward to 25-28 million carats from 21-26 million carats, after assuming full ownership of the Gahcho Kué mine in Canada.
De Beers unit cost guidance improved to around $70 per carat from around $80 per carat, reflecting the increased contribution from Gahcho Kué.
The sale of Anglo's Australian steelmaking coal assets to Dhilmar for up to $3.875 billion remains on track to complete by the first quarter of 2027.
Anglo continues to work through European Commission approval for the sale of its nickel business to MMG Singapore Resources.
Chief executive Duncan Wanblad said operational performance was resilient across the business and the company remains on track to meet its full-year guidance.