Sumitomo Metal Mining Signs Agreement with Nyangumarta Warrarn Aboriginal Corporation to Advance the Winu Copper-Gold Project

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September 10, 2026
Sumitomo Metal Mining Co., Ltd.

Sumitomo Metal Mining Co., Ltd. (Head Office: Minato-ku, Tokyo, TSE: 5713) announces that SMM Perth Pty Ltd, a wholly-owned subsidiary of Sumitomo Metal Mining, together with its joint venture partner, Rio Tinto Winu Pty Limited, have signed a Project Agreement with the Nyangumarta Warrarn Aboriginal Corporation RNTBC (NWAC), to advance the proposed Winu copper-gold project located on Nyangumarta Country in Western Australia. This marks a major milestone in the development of a long-term relationship with the Nyangumarta People and advances the project towards development of the mine.

Please check the below PDF file for details.

Sumitomo Metal Mining Signs Agreement with Nyangumarta Warrarn Aboriginal Corporation to Advance the Winu Copper-Gold Project