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

Rio Tinto and Sumitomo Metal Mining signed a definitive joint venture agreement for the Winu copper-gold project in Western Australia. Sumitomo will pay up to $430.4 million for a 30% stake.

- Type: Partnership
- Announced: 2025-05-12
- Where: Western Australia, Australia
- Value: $430.4M
- Status: announced
- Products: copper, gold
- Sectors: [Mining Equipment](https://endata.com/sectors/mining-equipment.md)

## Companies

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

## Sources

- [news.metal.com](https://news.metal.com/newscontent/103320541-rio-tinto-and-sumitomo-metal-mining-sign-final-joint-venture-agreement-for-winu-copper-gold-project-in-western-australia), 2025-05-12: "Our partnership with SMM began in 2000 when we collaborated at the Northparkes mine in New South Wales, and we look forward to bringing our combined experience and expertise to the Winu 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.