Carlos Barrena Torres

Senior Mechanical Designer with responsibility for multidisciplinary BIM model coordination, model quality control, and detailed design integration for major mining projects. Functions as the lead checker for all discipline models and coordinates the execution of mechanical, piping, civil, structural, electrical, and instrumentation design deliverables within the 3D environment. Oversees BIM model progress, design compliance, constructability reviews, interdisciplinary coordination, and client-facing model presentations, while leading the mechanical and piping design team to ensure successful project delivery. Key projects include: Coroccohuayco Project – Antapaccay / Glencore (Peru) Large-scale copper expansion project (~USD 1.8 billion), with a production capacity of 300,000–350,000 t/y of copper, involving complex plant layout development and multidisciplinary design coordination. Mina Justa Underground Expansion – Marcobre / Minsur (Peru) Major underground mining expansion (~USD 1.8 billion), supporting approximately 6.8 Mt/y of sulfide ore, with strong focus on integrated mechanical, piping, and layout design across multiple project areas.

Performed as Lead Mechanical Designer on large-scale mining EPCM projects, with strong focus on mechanical and piping design, plant layouts, P&IDs, and multidisciplinary design coordination, supporting integrated and constructible design solutions. Extensive use of MicroStation and advanced CAD tools in compliance with project and company standards. Key projects include: Bomboré Gold Project – Orezone / Lycopodium EPCM project (~USD 200 million) with a processing capacity of 5.2 Mt/y, involving detailed mechanical and piping design, layout development, and coordination across multiple engineering disciplines. Yanqul Copper-Gold Project – Mazoon Mining / Lycopodium EPCM project (~USD 200 million) with a capacity of 3 Mt/y, supporting multidisciplinary design integration and delivery of mechanical and piping design packages.

Responsible for mechanical and piping design, with strong emphasis on plant layouts and mechanical arrangements, as well as process deliverables including PFDs and P&IDs developed in SmartPlant P&ID. Actively involved in interdisciplinary coordination to ensure consistency between process, mechanical, piping, and layout design across project stages. Demonstrated advanced use of SmartPlant, AutoCAD, MicroStation, and Plant 3D for the development of integrated design deliverables supporting both study and detailed engineering phases. Key projects include: Yanacocha AWT Pilot Plant – Newmont / Yanacocha (Peru) Water treatment facility (~USD 400 million), covering design, construction, and operation stages, with 1.2 years of direct involvement in layout development, mechanical arrangements, and process documentation. Magistral Project – Nexa / Milpo (Peru) Large-scale mining project (~USD 500 million; 10.8 Mt/y), supporting mechanical, piping, and layout design activities. Escondida – BHP (Chile) Pumping system upgrade project (~USD 5 million) for a high-capacity operation (150 Mt/y), focused on mechanical and piping arrangements. Sal de Oro – POSCO (Argentina) Lithium project with estimated investment > USD 4.0 billion (25,000 t/y), contributing to process layouts and mechanical design development. Shalipayco – Nexa / Pan American Silver (Peru) Exploration-stage project (zinc, lead, silver), supporting early-stage layout and process design activities. FullSaL – BHP (Chile) Technology development and pilot-scale project aimed at optimizing leaching processes and improving copper recovery, with focus on process and mechanical design integration.

Provided engineering services and technical support for various industrial and mining projects, participating in feasibility, detailed engineering, supervision, and construction assistance. Preparation of drawings, plant layouts, and 3D modeling for industrial facilities. Technical support for mining projects including piping, mechanical, and instrumentation. Coordination of multidisciplinary deliverables and assistance to contractors on site.

Involved in conceptual, feasibility, and detailed engineering for mining projects. Fast Project – Barrick (Lagunas Norte Operation) – feasibility engineering for water treatment ponds – operational improvement project in a gold mine.

Performed as Field Lead Designer for As-Built engineering activities across four fish processing plants (Callao, Pisco, and Huacho), coordinating field and office-based design teams to ensure accurate, high-quality engineering deliverables. Led a team of approximately 15 designers (Mechanical, Piping, Process, Instrumentation) managing task assignment, field verification activities, and office drafting efforts, while ensuring alignment between site conditions and final As-Built documentation. Key responsibilities and deliverables included: Development and update of As-Built P&IDs based on field surveys and operational data. Coordination and review of power cable megger testing results, instrumentation data sheets, and electrical equipment records. Close coordination with operations and maintenance teams to validate design information. Preparation of process improvement recommendations aimed at enhancing plant reliability and operational performance.

Worked on large-scale mining projects at both conceptual and detailed engineering levels, responsible for piping design, plant layouts, P&ID´s. Isometrics and 3D modeling, and technical coordination. Third Mill – Las Bambas (MMG) – ~USD 400 million – ~50 Mt/year Optimization and third pumping line – Chungar (Volcan Compañía Minera) – ~USD 30 million – ~2 Mt/year

Responsible for engineering, planning, execution coordination, contractor management, and progress control of investment and improvement projects. Led multidisciplinary teams ensuring compliance with schedule, cost, and quality standards. Key projects: Industrial plant replacement and modernization – ~USD 20 million. Minor improvement projects – individual budgets < USD 1 million (process optimization, assets, and facilities).

Responsible for the full engineering lifecycle (external and in-house), including planning, control, execution, and commissioning of the company’s main industrial projects. Led in-house multidisciplinary engineering activities covering mechanical, piping, electrical, instrumentation, and civil disciplines, ensuring technical consistency, constructability, and alignment with operational requirements. Supervised a multidisciplinary team composed of 4 engineering professionals and 15 designers/drafters, coordinating design development, field supervision support, and execution interfaces, while managing national and international contractors. Oversaw a total investment portfolio of approximately USD 20 million, providing technical leadership from early engineering through commissioning and handover. Key Projects: MP3 Upgrade – mechanical body modification and drying hood system implementation. Effluent Treatment Plant, fuel facilities, and gas systems engineering and execution. Construction of 8,000 m² industrial buildings for process conversion. Installation of a new De-inking Plant. Engineering and procurement of a new MP1 production line.

Contracted senior technical office role responsible for field engineering, take-offs, site tasks, and supervision of piping fabrication and installation for a major mine expansion. I worked on new crusher, crushing building, overland conveyors, and dust collection systems. Toquepala Concentrator Expansion Project – Southern Peru – ~USD 1.2 billion – capacity increased from 60,000 to 120,000 metric tons/day, yielding ~100,000 extra metric tons of refined copper/year.