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Sumitomo Metal buys 30% stake in Rio Tinto's Winu copper and gold project in Australia

Sumitomo Metal Mining, a Japanese company, announced on Monday that it had agreed to purchase a 30% stake from Rio Tinto in the Winu Copper-Gold Project in Western Australia.

The move is part of efforts by the Japanese miner to expand its assets in copper and gold, and comes after the two miners agreed last December to create a joint venture for the development and operation of the project.

As part of the agreement, SMM is required to pay Rio Tinto $195 million in cash upfront as a consideration for its acquired interest. This payment will be made to Rio Tinto when the transaction closes, which is expected to occur in 2025.

SMM also agreed to pay deferred payment of up $235.4 millions, contingent on the achievement of certain milestones, based upon a potential future expansion of mill throughput.

Rio Tinto discovered a mineralized zone of copper and gold in 2017 in the Great Sandy Desert in Western Australia.

SMM stated that the estimated indicated and implied resources of the project totaled 741 million metric tonnes by the end of 2024. This includes approximately 3 million tons copper and 250 tones of gold.

Rio Tinto has begun the environmental permit processes for a mill that will have a throughput of 10 million tonnes per year.

SMM's spokesperson said that it is still unclear when the production will begin, and how much total cost of development there will be.

SMM, which produced 230 tons of copper via equity holdings during the fiscal year that ended on March 31, plans to increase its copper production to 300,000 tonnes over the long-term. (Reporting and editing by David Evans; Yuka Obayashi)

(source: Reuters)