La Arena

La Arena is located in the La Libertad region in northern Peru, approximately 480 km from Lima. It is an open-pit mining operation focused on gold production through heap leaching of oxidized ores, in operation since 2011 and currently operated by Zijin Mining Group. The deposit is characterized by high-sulfidation gold mineralization associated with the Chimú Formation.

As part of its growth strategy, the La Arena II project involves the development of a copper-gold porphyry system, expanding its polymetallic potential and extending mine life through exploration and resource optimization.

In this context, a range of specialized services and studies were carried out to ensure the safety, efficiency, and sustainability of the operation, as outlined below:

• Geotechnical and geomechanical studies: Studies for foundations, slope stability, leach pads, waste dumps, open pits, and mining infrastructure, including 2D and 3D static and dynamic analyses, as well as laboratory testing.
• Heap leach pads, waste dumps, and storage facilities engineering: Conceptual, basic, and detailed engineering for leach pads, waste rock dumps, and associated facilities, optimizing capacity and operational safety.
• Stacking planning and optimization: Development of ore and waste placement strategies to optimize space utilization and extend mine life.
• Water management and drainage: Design and update of surface drainage systems, water balance, water management, and sediment control, including hydraulic infrastructure design.
• Construction supervision and quality assurance (CQA/CQC/MQA): Supervision of earthworks and geosynthetics installation, ensuring compliance with technical standards.
• Engineer of Record (EoR): Ongoing monitoring, geotechnical analysis, instrumentation review, and continuous technical support during operations.
• Environmental studies and permitting: Preparation of studies and documentation for environmental management instruments (MEIA, ITS, among others), as well as support in modification and expansion processes.
• Complementary infrastructure design: Studies and designs for civil, road, electrical, and operational support infrastructure, including community-related projects.