Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 74

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 74
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oride emissions (thousand tonnes)                          |  2.26 |  2.61 |  2.36 |  2.36 |  2.27 |
| Particulate (PM10) emissions (thousand tonnes)                | 169.0 | 169.5 | 146.3 | 142.3 | 143.2 |

1. Significant environmental incident is an incident with an actual consequence rating of high or very high. We measure and rate incidents according to their actual environmental and compliance impacts using 5 severity categories: very low, low, moderate, high and very high. Very high and high environmental incidents are usually reported to the relevant product group head and the Rio Tinto Chief Executive as soon as possible. 2. In 2024, we paid environmental fines from damage to water resources and pollution caused by using sub-standard seepage water for dust suppression on roads at Oyu Tolgoi, Mongolia; penalty infringement notices associated with maintenance of a failed coke unloader, maintenance of a failed roof manifold, and release of a prescribed water contaminant at Boyne Smelters Limited, Australia; contaminants release at an unauthorized point and failure to install and maintain required equipment, leading to non-compliance with environmental authority conditions at Yarwun, Australia; facility acquired equipment without obtaining the required air permit approval at Boron operations, USA; discharge of pollutants into storm drains and surface waters at Wilmington operations, USA; release of a contaminant into the environment exceeding the legal limit at Havre-Saint-Pierre, Canada; non-compliance with Environmental Quality Act at Vaudreuil plant, Canada. 3. A reduction in cumulative disturbance from 2023-2024 is a result of the sale of Dampier Salt Limited’s Lake MacLeod operation. Note: The numbers may change year to year and retrospectively due to reconciliations of data.

Mining and metals practices Tailings We engage with stakeholders throughout the life cycle of our tailings storage facilities, from design to closure. We also collaborate closely with external bodies to improve the way tailings are managed across our industry. We operate 104 tailings storage facilities (TSFs) across our global assets. Th i rty-eight are active TSFs, 24 are inactive and 42 are closed. We work through technical committees and joint venture relationships to support leading practice in tailings management. Our full tailings disclosure is available on our website. We periodically update the list of TSFs to