Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 439

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 439
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 analysts (CRU and Woodmac). 4. Bingham Canyon Open Pit molybdenum grades interpolated from exploration drilling assays have been factored based on a long reconciliation history to blast hole and mill samples. 5. Escondida Mineral Resources valuations are based on a copper price of USc429/lb supplied by the JV partner. 6. Oyu Tolgoi Minera l Resources valuations are based on commodity prices of USc390.00/lb for copper, US$1,649.00/oz for gold, US$22.10/oz for silver and US$14.20/lb for molybdenum. These are based on January 2024 consensus prices sourced from the average forecasts from ten brokers/banks (Barclays, BoAML, Citigroup, Credit Suisse, Deutsche Bank, Goldman Sachs, JP Morgan, Macquarie, Morgan Stanley and UBS) and two analysts (CRU and Woodmac). 7. The Hugo Dummett North Mineral Resources include approximately 0.9 million tonnes of stockpiled material at a grade of 0.35% copper, 0.11g/t gold and 0.85g/t silver.

| Annual Report on Form 20-F 2024 | 295 | riotinto.com |

Production, Mineral Reserves, Mineral Resources and operations | Mineral Resources

| Total Measured and Indicated MineralResources as at 31 December 2024 |       |        |        |       | Inferred Mineral Resourcesas at 31 December 2024 |       |        |        |       | Rio Tintointerest |
| Tonnage                                                              | Grade |        |        |       |                                          Tonnage | Grade |        |        |       |                   |
| Mt                                                                   |  % Cu | g/t Au | g/t Ag |  % Mo |                                               Mt |  % Cu | g/t Au | g/t Ag |  % Mo |                 % |
| 464                                                                  |  0.39 |   0.32 |   2.24 |     – |                                              277 |  0.41 |   0.36 |   2.12 |     – |             100.0 |
| 63                                                                   |  0.41 |   0.17 |   2.55 | 0.019 |                                               13 |  0.19 |   0.28 |