The closure of Tailings Storage Facilities (TSFs) can be one of most challenging aspects in the mining sector due to the intricate environmental, social and economic risks they present. Addressing these risks in a sustainable manner necessitates not merely adhering to regulatory norms but envisioning a future where these landscapes can potentially regenerate and rejuvenate local ecosystems and communities.
This paper delves into the innovative approach of reverse engineering TSFs to ensure they meet sustainable closure objectives. Instead of treating closure planning as a final step, it is proposed to rather integrate it into the TSF lifecycle as early as possible. The critical question we explore is: can we design a TSF that not only minimises its environmental footprint but is even regenerative?
The framework for success in TSF closure is multifaceted, with each stakeholder defining it differently. For tailings engineers, it probably means maintaining physical stability; for owners, it may be about achieving a rehabilitated facility which visually integrates into the environment without any latent liabilities; for regulators, the focus is likely to be on clear liability management and risk assessment; for local communities, it involves transforming TSFs into assets that do not harm, and possibly even benefit the environment; and for the receiving environment, it entails fostering biodiversity and regeneration.
By leveraging advanced tools like Rain-On-Grid (RoG) modelling, Landform Evolution Modelling (LEM), rendered images, videos, and Dam Breach Assessments (DBAs), we can bridge the gap between technical complexity and stakeholder understanding. These tools enable us to validate design assumptions, predict long-term performance, and visually communicate potential outcomes to non-technical audiences.
In this context, engineering professionals must evolve to seamlessly integrate ecological and sociocultural considerations into their designs, ensuring alignment with broader ESGS (Environmental, Social, Governance, and Sustainability) goals. By doing so, we enable a more holistic and successful approach to TSF closure — one that respects and revitalizes the environment while delivering tangible benefits to local communities.
Click on the link: Technical Presentation
