Rio Tinto commits US$1.9 billion to Kangwinan bauxite mine in Queensland
The brownfield project is planned to add 20 million tonnes of annual capacity at Weipa, with first output targeted in 2029 and full production expected by 2032.
- Publish date: 2026-10-23
- Category: Mining & Minerals
- Original source: Rio Tinto
- Reading time: 3 min read
Investment and production plan
Rio Tinto announced on 23 October 2026 that it would invest US$1.9 billion in the Kangwinan bauxite project on Western Cape York Peninsula in Queensland. The company describes it as a brownfield investment that will use some existing infrastructure and add 20 million tonnes of annual bauxite production capacity at its Weipa operations. First output is targeted for 2029, with full production expected by 2032. The capital estimate includes US$150 million of early works that Rio pre-approved in 2025 and says the replacement expenditure is incorporated in its medium-term capital guidance. Early works began in 2025; construction is expected to ramp up in 2027.
Replacing mines and expanding logistics
Rio says Kangwinan will replace production from the Andoom mine near Weipa as that operation reaches the end of its life this decade. It expects Weipa Operations annual capacity to rise from about 38 million tonnes at current production levels to approximately 44 million tonnes. The new production centre is planned about 15 kilometres south-east of Amrun. A 15-kilometre conveyor is intended to move ore to expanded stockyard facilities and the existing Amrun wharf. Rio also plans to expand the wharf so it can handle larger capesize vessels, which it says should improve supply-chain efficiency and lower freight costs. The announcement says the project will help compensate for the planned end of production at the Gove mine in the Northern Territory in 2029.
Workforce and Traditional Owner engagement
Rio expects construction to support more than 1,300 jobs and says the project will help sustain its residential workforce of about 1,500 people in Western Cape York over the longer term. The company says environmental permits for Kangwinan were secured through the previously approved South of Embley Environmental Impact Statement. The project name was selected at the request of Wik Waya Traditional Owners. Rio says it will continue working with Traditional Owners to minimize effects on cultural heritage, waterways and important access routes, and that relationships with local communities will be critical to long-term success. These are commitments and estimates in the company announcement; the release does not provide an independent employment assessment or detailed construction schedule by work package.
Analysis and limits
Kangwinan is a replacement-and-expansion project: it is intended to maintain output as Andoom winds down while raising capacity at Weipa and using existing mine-to-port infrastructure. Its contribution to future supply depends on construction delivery, approvals already secured for the described project, operational ramp-up and the planned wharf and conveyor work. Rio’s announcement also notes its planned acquisition of the adjacent Aurukun Bauxite Project, which remains subject to government approvals; that acquisition should not be treated as part of Kangwinan’s committed capacity. The company forecasts approximately 22% internal rate of return using third-party market forecasts as of Q4 2026, which is a modelled corporate estimate rather than a guaranteed return. Monitoring should separate Kangwinan’s build milestones from the Aurukun transaction and later production outcomes.