Pellet Plant, El Trigo, Los Corralillos and El Romeral

1. Project Overview

The framework agreement between CMP and our consultancy establishes comprehensive technical support in tailings management and applied geotechnics across multiple company facilities. Services have been primarily focused on the Filtered Tailings Deposits at Planta Pellets, El Trigo, Los Corralillos, and El Romeral—critical infrastructure assets that support CMP’s operational continuity in the Atacama Region.

2. Project Challenges

Tailings management at these facilities presented several key technical and operational challenges:

• Maintaining the physical stability of active filtered tailings deposits.

• Optimizing the efficiency of thickening and filtration processes.

• Ensuring compliance with international best practices and industry standards.

• Aligning day-to-day operational requirements with long-term engineering design criteria.

• Continuously updating geotechnical parameters, verifying field performance, and adapting solutions to variability in tailings characteristics and site conditions.

• Strengthening emergency management through coordinated and robust preparedness and response plans.

3. Our Approach and Solutions

To address these challenges, Anddes implemented an integrated technical and operational approach that included:

Technical Tools, Methods, and Innovations

• Integration of specialized engineering studies with ongoing operational advisory services.

• Execution of field investigation campaigns for detailed geotechnical characterization.

• Technical audits of thickening and filtration systems.

• Modeling and evaluation of growth alternatives and optimization strategies for filtered tailings deposits.

• Development of conceptual engineering solutions for water management and control.

• Preparation and periodic updates of Emergency Preparedness and Response Plans (EPRPs).

• Definition of Trigger Action Response Plans (TARPs) for critical operational scenarios.

• Implementation of monitoring and control systems to support the safe management of tailings facilities.

Sustainable Practices

• Integration of engineering and operational criteria to ensure technically sound and sustainable solutions.

• Application of continuous monitoring methodologies to strengthen preventive risk management.

• Optimization of thickening and filtration processes to reduce water consumption.

• Reinforcement of safety and resilience culture through updated response protocols.

• Promotion of tailings management practices aligned with international standards and environmental best practices.

4. Results Achieved

Key Achievements

• Development of comprehensive diagnostics of CMP’s tailings systems, encompassing technical, operational, and environmental aspects.

• Formulation of targeted recommendations to optimize thickening and filtration performance and enhance physical stability.

• Validation of existing designs and updating of geotechnical parameters based on field data.

• Identification and development of safer and more efficient tailings management alternatives.

• Strengthening of Emergency Preparedness and Response Plans in accordance with corporate and regulatory standards.

Project Contribution

• Generation of reliable technical information to support strategic decision-making in tailings management and geotechnics.

• Effective integration of engineering, operations, and environmental teams under a unified technical framework.

• Contribution to operational continuity and compliance with regulatory and corporate commitments.

• Consolidation of a management model that integrates applied engineering, operational control, and environmental sustainability.

• Reinforcement of a preventive culture and continuous improvement approach within CMP operations.