1036 Rather than representing an incremental improvement to conventional systems, In-Pit TSFs constitute a paradigm shift in tailings management—one that addresses risk at its source and responds directly to increasing societal and regulatory expectations for safer mining practices. 9. RECOMMENDATIONS AND FUTURE DEVELOPMENTS 9.1 Engineering and Operational Recommendations Based on the findings of this study, the following recommendations are proposed for the implementation of In-Pit TSFs: • Integrate In-Pit TSF evaluations at the earliest stages of mine planning, rather than as late-life closure alternatives • Apply conservative geotechnical and hydrogeological design criteria reflecting the permanent nature of tailings storage • Prioritize hydraulic containment through robust water balance management and monitoring systems • Adopt staged deposition strategies to promote consolidation and pore pressure dissipation • Implement comprehensive instrumentation programs to verify long-term performance These measures are essential to ensure that the inherent advantages of In-Pit TSFs are fully realized throughout the facility life cycle. 9.2 Strategic and Industry-Level Recommendations At an industry level, broader adoption of In-Pit TSFs can be supported through: • Clear regulatory guidance recognizing In-Pit TSFs as distinct systems from surface TSFs • Standardized risk-based assessment frameworks tailored to pit-based storage • Systematic documentation and dissemination of operational case studies • Integration of In-Pit TSFs into corporate tailings governance and assurance programs Such actions would facilitate informed decision-making and encourage consistent, transparent implementation across jurisdictions. 9.3 Future Research and Development Opportunities Future advancements in In-Pit TSF performance may be achieved through: • Expanded use of thickened, paste, and filtered tailings to enhance consolidation behavior • Advanced coupled hydro-mechanical numerical modeling for long-term performance prediction • Digital monitoring systems linked to predictive analytics and real-time risk management • Climate-resilient water balance design under extreme precipitation scenarios Continued research and innovation in these areas will further strengthen the role of In-Pit TSFs as a cornerstone of safe and sustainable tailings management in modern mining. REFERENCES ANCOLD (2019). Guidelines on Tailings Dams. Australian National Committee on Large Dams, Australia. Davies, M. P., & Martin, T. E. (2020). Tailings dam safety: Essential elements and risk-based management. Mining Engineering, 72(2), 38–45. Fourie, A. B. (2012). Preventing catastrophic failures of tailings storage facilities. Geotechnical News, 30(2), 33–39. Fourie, A. B., & Blight, G. E. (2015). In-pit tailings storage facilities: A viable alternative to conventional tailings dams. In Proceedings of the Tailings and Mine Waste Conference. Freeze, R. A., & Cherry, J. A. (1979). Groundwater. Prentice Hall. Global Industry Standard on Tailings Management (GISTM) (2020). Global Industry Standard on Tailings
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