Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 466

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 466
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 This followed the completion of a transaction forRio Tinto’s acquisition of the 40% share held by DominionDiamond Mines in Diavik, with the Court of Queen’s Bench ofAlberta’s approval. |     | Property description/type of mineOpen pit and underground operations (blast-hole stoping andsub-level cave methods).This Property is considered a production stage property forSK-1300 reporting purposes.Type of mineralisationDiamondiferous kimberlite deposit.Processing plants and other available facilitiesIncludes processing plant and accommodation facilities on-site.Power sourceOn-site diesel generators, installed capacity 44MW, 9.2MW ofwind capacity and 3.5MW solar farm. |

| Annual Report on Form 20-F 2024 | 313 | riotinto.com |

Production, Mineral Reserves, Mineral Resources and operations | Mines and production facilities

Minerals Projects

| PropertyRinconOwnership100% Rio TintoOperatorRio TintoLocationRincon Salar, Salta,Argentina |     | Access and infrastructureRoad and air.Title/lease/acreageTwo separate mineral leases for a total of 82,905ha, the largestone being the Grupo Minero Proyecto Rincon with 80,032ha.Mining concessions are issued by the Provincial Mining Courtand have lifelong exploitation rights.Key permit conditionsKey permit conditions are environmental compliance andreporting, including independent authorisations for industrialwater and brine extraction, spent brine disposal facilities,processing plant and ancillary infrastructure.HistoryRincon Salar was initially explored by Admiralty Resources NL,who acquired mining leases covering approximately 85% of theSalar in 2001. Admiralty demerged the project into a separateAustralian Securities Exchange (ASX) listed entity called RinconLithium Ltd in October 2007, and sold the company to the privateequity group Sentient Equity Partners in December 2008. Theproject was under evaluation by Sentient until the acquisition ofthe property by Rio Tinto in March 2022.The Rincon 3000 starter plant achieved first lithium in November2024 and is scheduled for completion in the first half of 2025.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |     | Property description/type of mineMining will comprise brine extracted from a production wellfieldand fed to a central processing facility for lithium recovery andbattery grade lithium carbonate production.This Property is considered a production stage property forSK-1300 reporting purposes.Type of mineralisationLithium mineralisation occurs as a brine within a