Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 421

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 421
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 the Group’s 100% interest in Jonquière (Vaudreuil), Yarwun, 80% interest in Queensland Alumina and 10% interest in São Luis (Alumar). (f) North American Aluminium represents the Group’s 100% interest in Alma, Arvida, Arvida AP60, Grande-Baie, ISAL, Kitimat, Laterrière, 40% interest in Alouette, 25.1% interest in Bécancour, 20% interest in Sohar and 50% interest in Matalco. (g) Pacific Aluminium represents the Group’s 100% interest in Bell Bay, 73.5% interest in Boyne Island, 100% interest in Tiwai Point and 51.6% interest in Tomago. On 30 September 2024 , our interest in Boyne Island was increased from 59.4% to 71.05% following our acquisition of Mitsubishi Corporation’s 11.65% interest in Boyne Smelters Limited (BSL). On 1 November 2024 , our interest was further increased to 73.5% following our acquisition of Sumitomo Chemical Company’s (SCC) 2.46% interest in BSL. On 1 November 2024 , we also acquired SCC’s 20.64% interest in New Zealand Aluminium Smelters, increasing our interest from 79.36% to 100% . (h) Until 16 December 2022, our interest in Oyu Tolgoi (OT) was held indirectly through our 50.8% investment in Turquoise Hill Resources Ltd (TRQ), where TRQ’s principal asset was its 66% investment in Oyu Tolgoi LLC, which owned the OT copper-gold mine. Following the purchase of TRQ we now directly hold a 66% investment in Oyu Tolgoi LLC. (i) I ncludes our interests in Rio Tinto Iron and Titanium Quebec Operations ( 100% ), QIT Madagascar Minerals (QMM, economic interest of 85% ) and Richards Bay Minerals (attributable interest of 74% ). (j) Relates to our 100% interest in the Diavik diamond mine and diamond marketing operations. (k) Rio Tinto SimFer UK Limited (which is wholly owned by the Group) holds a 53% interest in SimFer Jersey Limited (SimFer Jersey) which in turn,