# Rio Tinto and Sumitomo Metal Mining sign joint venture for Winu copper-gold project

Rio Tinto and Sumitomo Metal Mining signed final joint venture agreements for the Winu copper-gold project in Western Australia. Sumitomo will pay Rio Tinto up to $430.4 million for a 30% equity share, including $195 million upfront.

- Type: Partnership
- Announced: 2025-05-12
- Where: Great Sandy Desert, Western Australia, Australia
- Value: $430.4M
- Status: announced
- Products: copper, gold

## Companies

- [Rio Tinto](https://endata.com/companies/4215.md) (partner)
- [Sumitomo Metal Mining](https://endata.com/companies/24717.md) (partner)

## Sources

- [stocks.observer-reporter.com](https://stocks.observer-reporter.com/observerreporter/article/bizwire-2025-5-12-rio-tinto-and-sumitomo-metal-mining-sign-definitive-agreement-for-winu-project-joint-venture), 2025-05-12: "This partnership is an excellent fit for Rio Tinto and will strengthen the project."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.