Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 509

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 509
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-1300 under Securities Act of 1933 Rio Tinto tested each of its properties to determine which are material to the Group based on the previous financial year reporting based on the following guidelines: Short term value – where underlying earnings for the current and next year constitute >~10% of Group underlying earnings. Medium term value – where underlying earnings over the remainder of the 10-year plan are anticipated to constitute >~10% of Group underlying earnings on average; and the Mineral Reserves constitute >~10% of Group Mineral Reserves (on a CuEq basis). Long term value – where the Mineral Reserves constitute >~20% of Group Mineral Reserves (on a CuEq basis). Qualitative value – where the company takes a qualitative view on the importance of the project based on criteria including but not limited to planned expenditure, strategic importance, or media coverage. Based on these tests, the Pilbara Operations, Escondida, Oyu Tolgoi and Simandou are considered material to the Group and hence require individual property disclosure and the submission of a Technical Report Summary for each pursuant to Items 1302 and 1304 of SK-1300, respectively. Managed and non-managed operations

| Annual Report on Form 20-F 2024 | 341 | riotinto.com |

Additional information | US Disclosure The following disclosure provides a brief description of the individual properties which Rio Tinto considers material to its business and financial condition. Pilbara operations Property overview Rio Tinto owns and operates an integrated portfolio of iron ore assets in the Pilbara region of Western Australia comprising a network of 17 iron ore mines, four port terminals, a nearly 2,000km rail network and other infrastructure (Pilbara Property). The Pilbara Property includes Mineral Resources and Mineral Reserves which are dispersed across the Pilbara region over an area of approximately 70,000 square km across the Hamersley Province of Western Australia, located on the southern margin of the Pilbara Craton. The Pilbara Property lies within the volcanic and sedimentary rock sequence of the Mount Bruce Supergroup, which contains the 2,500m thick Hamersley Group, the main host to iron ore deposits, characterised by around 1,000 m of laterally extensive Banded Iron Formation (BIF). Mineralisation at the Pilbara Property may be grouped into three categories by genesis. BIF Derived Iron Deposits (BIDs) (Boolgeeda, Brockman, and Marra Mamba), Channel Iron Deposits