the material in modern, engineered structures, the industry effectively eliminates a latent risk of catastrophic failure. This proactive elimination of hazard is imperative, as the reputational fallout from a tailings failure is devastating to the entire sector. Thus, reprocessing serves as the ultimate mechanism to safeguard the social license to operate. As demonstrated through the proposed viability framework, profitability and safety are not guaranteed outcomes but the result of systematic uncertainty reduction. This requires the integration of three critical engineering pillars: rigorous resource definition to account for spatial variability, advanced geotechnical assessment to ensure stability during the extraction process, and robust metallurgical piloting to validate recovery from oxidized feedstocks. The application of a stage-gate execution model, specifically the Integrated De-Risking Matrix, is essential to prevent the creation of secondary liabilities and ensure bankability. Ultimately, while the technical challenges are significant, the primary barrier to widespread adoption remains strategic. Unlocking the value of Peru’s mining legacy requires a modernized regulatory framework that actively incentivizes remediation through reprocessing. By fostering collaboration among government, industry, and academia to mitigate these projects’ risk, Peru can transform the environmental burden of its past into a sustainable engine for its future.
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