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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Escondida is a major open-cut copper mine in Chile’s Atacama Desert, about 170 km southeast of Antofagasta. BHP operates the mine and describes it as the world’s largest copper mine; Rio Tinto, a co-owner, uses the same characterization. BHP reported that production rose 16% in FY2025 to its highest level in 17 years, while its published FY2026 production figures are forecasts, not actual results.
Where is Escondida and who owns it?
Escondida lies in northern Chile’s Atacama Desert, about 170 km southeast of Antofagasta. BHP says the name means “hidden” in Spanish: the porphyry orebody does not outcrop and is covered by hundreds of metres of overburden.
| Owner | Interest |
|---|---|
| BHP (operator) | 57.5% |
| Rio Tinto | 30% |
| JECO interests | 12.5%: JECO Corporation 10% and JECO 2 Ltd 2.5% |
BHP’s mine profile summarizes the JECO interest as 12.5%; its SEC-filed FY2026 Form 20-F breaks it down between the two JECO entities. The filing says construction was completed and production began in 1990.
Why is Escondida called the world’s largest copper mine?
BHP and Rio Tinto describe Escondida as the world’s largest copper mine. These are company characterizations; the sources reviewed do not provide a common, independently ranked table for the current year. Rio Tinto’s mine page gives a rounded estimate of around 1 million tonnes of copper per year and 6% of global production, but its retrieved text does not state a reference year, so those figures should not be read as a precisely dated current-year result.
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BHP’s FY2025 Annual Report says mine production reached its highest level in 17 years, increasing 16% year on year. It attributes the rise to record concentrator throughput, improved recoveries, higher feed grade, and first production from Full Sal Leaching in Q4 FY2025.
| Measure | Figure | Period and status |
|---|---|---|
| Production change | Up 16%; highest in 17 years | FY2025 reported result, BHP Annual Report 2025 |
| Concentrator feed grade | 1.02%, compared with 0.88% | FY2025 and FY2024 reported figures, BHP Annual Report 2025 |
| Production expectation | 1,150–1,250 kt | FY2026 guidance published in 2025, not an actual result |
| Expected feed grade | Approximately 0.85% | FY2026 guidance published in 2025, not an actual result |
How does the mine operate?
Escondida’s two open-cut pits feed three concentrator plants and two leaching operations. These routes produce different saleable forms of copper, so not every tonne follows the same processing path.
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- Ore is mined from the open-cut pits and sent for processing.
- Sulphide ore is processed through concentrators; oxide ore and other suitable material can be treated through leaching operations.
- Copper concentrate is moved through Escondida-owned pipelines to Coloso port facilities.
- Copper cathode is transported by rail to ports near Antofagasta and Mejillones.
BHP reported that Full Sal Leaching achieved first production in Q4 FY2025. Its FY2025 Annual Report also says Escondida Norte had its first full autonomous haulage, with 33 trucks operating at the end of June 2025.
What do the resource figures mean?
BHP reported a resource base of over 26 billion tonnes in a January 2026 article. This is a company-reported resource figure, not annual copper production and not a claim that all material is an economically recoverable reserve. The research sources reviewed do not establish the article’s former claim of 3,900 Mt in reserves or support its estimate of more than 30 years of mine life.
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FAQ
Where is the Escondida copper mine?
It is in Chile’s Atacama Desert, about 170 km southeast of Antofagasta, according to BHP.
Who owns Escondida mine?
BHP operates and owns 57.5%. Rio Tinto owns 30%, and JECO interests hold the remaining 12.5%.
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How much copper does Escondida produce?
BHP reported a 16% year-on-year production increase in FY2025, reaching its highest production level in 17 years. Rio Tinto’s mine page gives a rounded estimate of around 1 million tonnes per year and 6% of global production, but does not identify the reference year in the retrieved text.
Why is Escondida the world’s largest copper mine?
BHP and Rio Tinto call it the world’s largest copper mine. The sources reviewed do not provide an independently ranked, like-for-like current-year league table, so the ranking should be understood as the companies’ characterization.
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