The remediation project of the former Pushaquilca mining unit, located in Ancash and led by AMSAC, included in its first phase the closure of 33 environmental liabilities distributed along the margins of the Pelagatos River and the Urupay ravine, including waste dumps, tailings, and adits.

In this intervention, approximately 525,900 m² of geosynthetics were installed as part of the waterproofing system to ensure the geochemical stability of these liabilities.

The use of geosynthetic-based solutions enabled a highly efficient cover system, contributing to a reduction in carbon footprint by eliminating material transport from quarries, while ensuring long-term stability on sloped areas.

In one of the most representative closure processes in high-Andean regions, the Pierina mining unit, located in the Cordillera Negra (Ancash), developed interventions aimed at ensuring the physical, hydrological, and geochemical stability of its main components.

For the closure of the heap leach pad, a multilayer solution was implemented over more than 30,000 m², consisting of drainage geocomposites, geocells, and geogrids. This system reinforced the structure, optimized water management, and adapted to slopes with varying inclinations.

The solution reduced the extraction of selected low-permeability and drainage materials and minimized carbon footprint by avoiding quarry material transport, achieving a technically efficient, environmentally sustainable closure adapted to challenging geographical conditions.

The remediation project of the former Pushaquilca mining unit, located in Ancash and led by AMSAC, included in its first phase the closure of 33 environmental liabilities distributed along the margins of the Pelagatos River and the Urupay ravine, including waste dumps, tailings, and adits.

In this intervention, approximately 525,900 m² of geosynthetics were installed as part of the waterproofing system to ensure the geochemical stability of these liabilities.

The use of geosynthetic-based solutions enabled a highly efficient cover system, contributing to a reduction in carbon footprint by eliminating material transport from quarries, while ensuring long-term stability on sloped areas.

In one of the most representative closure processes in high-Andean regions, the Pierina mining unit, located in the Cordillera Negra (Ancash), developed interventions aimed at ensuring the physical, hydrological, and geochemical stability of its main components.

For the closure of the heap leach pad, a multilayer solution was implemented over more than 30,000 m², consisting of drainage geocomposites, geocells, and geogrids. This system reinforced the structure, optimized water management, and adapted to slopes with varying inclinations.

The solution reduced the extraction of selected low-permeability and drainage materials and minimized carbon footprint by avoiding quarry material transport, achieving a technically efficient, environmentally sustainable closure adapted to challenging geographical conditions.