Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 73

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 73
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 air quality monitoring network at IOC’s mine in Labrador City and at our Rio Tinto Iron & Titanium Quebec Operations Sorel-Tracy plant. In some instances, we exceeded permissible dust levels at nearby air quality monitoring stations. We investigated all high dust concentration events. Most resulted from unusual forest fires, such as those close to our operations in Labrador City, Canada, where exceedances were observed over a large region. Where IOC was found to have caused the reporting exceedance, it was due to calm winds and atmospheric inversions when contaminants from the induration stacks cannot disperse in the atmosphere and remain close to ground level. Improving our air quality monitoring network over the coming years will help us to prevent dust incidents in the future.

| Annual Report on Form 20-F 2024 | 39 | riotinto.com |

Strategic report | Our approach to ESG | Environment

Operational environment overview

|                                                               |  2024 |  2023 |  2022 |  2021 |  2020 |
| Significant environmental incidents1                          |     0 |     1 |     1 |     2 |     0 |
| Fines and prosecutions – environment ($’000)2                 | 604.8 | 987.0 | 109.8 |   7.4 |  27.4 |
| Land footprint – disturbed (cumulative square kilometres)3    | 1,762 | 1,813 | 1,775 | 1,700 | 1,595 |
| Land footprint – rehabilitated (cumulative square kilometres) |   587 |   552 |   522 |   494 |   490 |
| Mineral waste disposed or stored (million tonnes)             |   979 |   983 |   978 | 1,005 |   987 |
| Non-mineral waste disposed or stored (million tonnes)         |  0.66 |  0.73 |  0.75 |  0.65 |  0.47 |
| SOx emissions (thousand tonnes)                               |  74.3 |  72.8 |  66.2 |  70.2 |  75.7 |
| NOx emissions (thousand tonnes)                               |  64.9 |  67.2 |  64.6 |  62.3 |  65.2 |
| Flu