Shahuindo

1. Project Overview

The Shahuindo Project is an open-pit gold operation located at approximately 2,900 m.a.s.l., utilizing heap leaching as its primary metallurgical process.

2. Project Challenges

• Development of multiple heap leach phases (Pad 1, Pad 2A, Pad 2B).

• Stability of pit slopes and containment systems.

• Infiltration modeling and solution level prediction.

• Geomembrane integrity verification in PLS ponds.

• Surface and subsurface drainage system design.

• Adaptation to Environmental Impact Assessment Modification (MEIA) requirements.

3. Our Approach and Solutions

• Sequential basic and detail engineering of leach pad expansions.

• Geotechnical evaluation of slopes, platforms, and structures.

• Infiltration simulation modeling for pad performance optimization.

• Dry-lance geoelectrical methods for liner verification.

• Design of sedimentation ponds, sub-drains, conveyance systems, and pumping infrastructure.

• Implementation of CQA/CQC programs for earthworks and geosynthetics.

• Conceptual design of sub-vertical drains to enhance drainage performance.

4. Results Achieved

• Phased pad development optimizing metallurgical performance.

• Verified stability of slopes and containment structures.

• Environmental protection through continuous liner verification.

• Efficient water management systems.

• Infrastructure development supporting crushing and agglomeration improvements.