Rio Tinto’s strong Pilbara performance in early 2026 highlights the continued strength of its core iron ore operations, while the ramp-up of Simandou in Guinea signals the next phase of the company’s long-term growth strategy.
The miner reported a near-10 per cent year-on-year increase in copper-equivalent production in the March quarter, supported by a nine per cent lift in both copper and copper-equivalent output.
While much of this uplift has been attributed to the ramp-up of the Oyu Tolgoi underground operation in Mongolia, Rio’s Pilbara iron ore system remains central to its overall performance.
In Western Australia, Rio delivered its second-highest first-quarter iron ore production since 2018, up 13 per cent year-on-year. This came despite tropical cyclones disrupting shipments by approximately eight million tonnes, around half of which is expected to be recovered.
“Our Pilbara iron ore mines performed strongly, while shipments were impacted by two cyclones in the quarter,” Rio Tinto chief executive Simon Trott said.
The result reflects the resilience of what is widely regarded as one of the world’s most mature and optimised mining systems, with continued gains in the Pilbara supported by replacement mine developments, including the Western Range project, as well as a broader focus on operational efficiency and cost discipline.
Rio has also signalled a willingness to extract additional value from its Pilbara footprint through industry collaboration. A recently announced partnership with BHP will explore the potential to unlock up to 200 million tonnes (Mt) of iron ore from neighbouring deposits by leveraging existing infrastructure, extending mine life while minimising capital intensity.
While the Pilbara continues to underpin Rio’s current output, the company is progressing a major expansion of its iron ore portfolio through the Simandou project in Guinea. The joint venture, described as Africa’s largest greenfield integrated mine and infrastructure development, has begun operations, with first shipments of high-grade ore already delivered to China.
Simandou is being developed with a capacity of up to 120Mt per year and includes more than 600km of new rail infrastructure, alongside port, barge and transhipment facilities. The scale of the project positions it as a long-life addition to Rio’s global supply base.
“This outstanding achievement has been made possible through the dedicated hard work of thousands of our colleagues, and the complementary strengths and expertise of Rio Tinto, our SimFer partners, the Government of Guinea and Winning Consortium Simandou,” Trott said.
The development has also been framed by local stakeholders as a broader economic catalyst, with Guinea positioning the project as a driver of national transformation and long-term economic growth.
Rio’s Pilbara operations and Simandou development point to a two-track iron ore strategy.
The Pilbara remains a highly productive, cash-generating system, delivering incremental gains through optimisation and infrastructure efficiency. Simandou, by contrast, represents a new phase of growth, underpinned by large-scale, integrated infrastructure and a high-grade resource base.
This dual approach is occurring alongside increased capital investment across Rio’s broader portfolio. The company reported $12.3 billion in capital expenditure in 2025, contributing to a 28 per cent decline in free cash flow to $4 billion, as it continues to invest in iron ore, copper and lithium projects globally.
Iron ore nonetheless remains central to Rio’s earnings profile, supported by strong output in Western Australia and new supply emerging from Guinea. At the same time, developments in copper and lithium, including the completion of Oyu Tolgoi’s underground expansion and progress at Argentinean projects such as Fenix 1B and Sal de Vida, highlight a broader diversification strategy.
As Rio continues to balance performance in established regions with investment in new supply corridors, its evolving iron ore strategy reflects the strength of its existing systems and the scale of its long-term growth ambitions.
