Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 458

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 458
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 capacity toaccommodate current operations and the undergroundconstruction project. Underground infrastructure in place includesseveral shafts for ore haulage, personnel haulage and ventilationplus a conveyor decline to surface and associated surfaceinfrastructure.Power sourceOyu Tolgoi obtains its electricity from the Western Grid of theInner Mongolia Autonomous Region (IMAR) in the People'sRepublic of China. This power is delivered through a cross-border220kV double-circuit transmission line. The electricity is providedby Inner Mongolia Power International Cooperation Co., Ltd(IMPIC), a subsidiary of Inner Mongolia Power (Group) Co., Ltd.This company is responsible for the ownership and operation ofIMAR's Western Grid. The current power supply agreement is acollaborative arrangement involving IMPIC and the NationalPower Transmission Grid SOSC (NPTG) of Mongolia, whichholds the necessary import license. Additionally, Oyu Tolgoimaintains an on-site diesel generator that functions as a 24/7standby emergency power source. |

| Annual Report on Form 20-F 2024 | 308 | riotinto.com |

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

Group mines as at 31 December 2024 Copper continued Projects

| PropertyResolutionOwnership55% Rio Tinto,45% BHPOperatorRio TintoLocationSuperior, Arizona,Pinal County, US |     | Access and infrastructureRoad, rail and water pipeline.Title/lease/acreageLand ownership: 192 parcels, including 185 fee simple parcelsand 7 split estate parcels wherein mineral rights are secured bymining claims. Land ownership totals 16,544 acres.Federal Mining Claims: 2,286 (2,285 lode claims and 1 placer)covering 42,053 acres.State of Arizona Mineral Exploration Permits: 62 permits, 8permits with a total of 4,163 acres in exploration areas and 54permits with a total of 26,801 acres in tailings, tailings corridorsand tailings buffer areas.State of Arizona Special Land Use Permits: 11 permits covering8,360 acres in stream monitoring, groundwater monitoring, andtailings surface investigation areas.Federal and State Grazing Permits and Leases: 7 leasescovering 80,270 acres.Rights of Way, for rail line and stations, roads, and pipelines,and utilities granted by both the United States and the State ofArizona through a combination of grants, leases, and permitstotalling 696 acres.All