Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 459

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 459
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 claims, permits, and leases are subject to annual renewalfilings and associated rental fees. A property tax is paid forowned lands. Grants are held not subject to fees or taxes.Key permit conditionsResolution is in the permitting and study stage of the project. It iscurrently at the end of a multi-year process to complete itsEnvironmental Impact Statement under the NationalEnvironmental Protection Act. Future permits will be required foroperations such as air quality permits and aquiferprotection permits. |     | HistoryThe Magma Vein (formerly Silver Queen) was discovered in the1870s and underground mining continued at the Magma Mineuntil 1998. In 1996, the Resolution deposit was discovered viaan underground drillhole directed south from the Magma Mineworkings. Kennecott Exploration (Rio Tinto) entered the projectin 2001 and through an exploration “earn-in” agreementbecame operator in 2004.Property description/type of mineBlock cave underground mining method.This Property is considered an exploration stage property forSK-1300 reporting purposes.Type of mineralisationPorphyry copper and molybdenum deposit.Processing plants and other available facilitiesWater treatment and reverse osmosis plant, historic tailingsimpoundments from the Magma Mine No. 9 and No. 10ventilation shafts.Power source115kV power lines to East and West Plant sites with supplycontract with Salt River Project (SRP). |
| PropertyWinuOwnership100% Rio TintoOperatorRio TintoLocationGreat Sandy Desert,Western Australia,Australia  |     | Access and infrastructureAir and road.Title/lease/acreageExploration License E45/4833 hosts the deposit. SeveralMiscellaneous Licenses cover the road access route,associated facilities, camp accommodation, airstrip and theregional borefields. A Mining Lease Application (M45/1288;7,500ha) has been made and is awaiting formal approval.Key permit conditionsAnnual rental payments for licences are required under theWestern Australian Mining Act 1978, along with other standardreporting obligations relating to expenditure and worksundertaken on the exploration licence.HistoryThe exploration licence was granted to Rio Tinto in October2017 and Winu was discovered in December 2017. The firstInferred Mineral Resource was announced in July 2020 andupdated to an Indicated and Inferred Mineral Resource inFebruary 2022.In December 2024, we announced a new partnership withSumitomo Metal Mining (SMM) to deliver the Win