{"id":"9b447efa-5fb5-463a-b669-86d44c53fe1f","slug":"sumitomo-metal-mining-x-rio-tinto","name":"Sumitomo Metal Mining x Rio Tinto","partnershipType":"joint_venture","status":"announced","announcedDate":null,"startDate":null,"endDate":null,"summary":"Rio Tinto and Sumitomo Metal Mining signed a Term Sheet for a joint venture on the Winu copper-gold project in Western Australia. SMM will pay 399 million USD for a 30 percent equity share with Rio Tinto as managing partner and operator.","sources":[{"url":"https://www.riotinto.com/en/news/releases/2024/rio-tinto-and-sumitomo-metal-mining-to-partner-on-winu-copper-gold-project","title":"Rio Tinto and Sumitomo Metal Mining to partner on Winu copper-gold project","sourceName":"Rio Tinto"}],"verificationPosture":"verified","reviewStatus":"reviewed","createdAt":"2026-08-22T19:17:15.934Z","updatedAt":"2026-08-22T19:21:48.102Z","parties":[{"id":"602c290b-b37f-4f29-80ee-01875e7817d6","partnershipId":"9b447efa-5fb5-463a-b669-86d44c53fe1f","companyId":"eaba45b7-4535-4cb7-8eac-54d21ea0ff98","externalName":null,"role":"co_developer","createdAt":"2026-08-22T19:17:16.313Z","company":{"id":"eaba45b7-4535-4cb7-8eac-54d21ea0ff98","slug":"sumitomo-metal","name":"Sumitomo Metal Mining"}},{"id":"ebab198b-5f00-4bdb-b11f-bac431cc8e7d","partnershipId":"9b447efa-5fb5-463a-b669-86d44c53fe1f","companyId":null,"externalName":"Rio Tinto","role":"co_developer","createdAt":"2026-08-22T19:17:16.688Z","company":null}]}