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Tailings pose significant environmental challenges, including land degradation, water contamination, and dust pollution. To mitigate these impacts, the mining industry has increasingly adopted tailings re-mining and filter-pressed tailings stacks as preferred alternatives to conventional tailings storage facilities (TSFs). Knight Piésold has supported the design, operation, and closure of TSFs, advising on cost-effective, environmentally responsible methodologies. Progressive restoration has emerged as a sustainable strategy to reduce the impact of tailings stacks. It involves rehabilitating sections of tailings deposits during active operations, rather than waiting until closure, allowing for real-time assessment and adjustment of restoration techniques. This approach is suitable for both small and very large-scale projects. Studies have also assessed the feasibility of re-mining tailings from facilities originally designed for permanent closure as forms or reducing tailings impact. However, tailings re-mining introduces technical risks that may challenge projects viability. A case study is presented to illustrate the outcomes and implications of such an analysis.