Antofagasta Celebrates 25 Years of Los Pelambres: A Milestone in Chilean Copper Mining

Antofagasta plc, the UK-based Chilean mining giant, has marked a major milestone with the 25th anniversary of its flagship Los Pelambres copper mine, located in the Coquimbo region of Chile. The celebration recognizes not only a quarter-century of successful operations but also the mine’s central role in positioning Chile as a global leader in copper production.

Los Pelambres: The Crown Jewel of Antofagasta

Commissioned in 1999, Los Pelambres is one of the largest copper mines in the world. It is renowned for its consistent output, operational efficiency, and strategic importance within Chile’s mining sector. The mine contributes significantly to Chile’s copper exports and forms a key part of Antofagasta’s asset portfolio.

Over the past 25 years, the mine has evolved from a large-scale copper producer into a model for technologically advanced and environmentally conscious mining practices. Its long-term production stability and community integration have made it a benchmark operation not only in Chile but globally.

Production and Expansion

Los Pelambres has a design capacity of over 370,000 tonnes of copper per year, making it one of Antofagasta’s most productive assets. The mine also produces molybdenum and gold as byproducts.

In recent years, Antofagasta has invested heavily in infrastructure and expansion projects at Los Pelambres, including:

• Desalination plant: To reduce freshwater use in a region prone to drought

• Tailing thickening systems: For sustainable waste management

• Phase 1 expansion: Increasing throughput and extending the mine life

These developments reflect the company’s commitment to sustainable and climate-resilient mining operations.

Community and Sustainability

The 25-year journey has been marked by significant investment in local communities, education, and infrastructure. Antofagasta has collaborated closely with regional stakeholders to ensure that the mine’s success benefits the residents of the Coquimbo region, especially the communities of Salamanca and Illapel.

The company has also been at the forefront of green mining practices, incorporating renewable energy sources and adopting water reuse technologies, aligning with Chile’s national goals for carbon neutrality and resource conservation.

Statements from Leadership

Company executives highlighted the importance of this milestone. CEO Iván Arriagada remarked that the 25th anniversary is “a moment of pride and reflection,” emphasizing the company’s commitment to long-term value creation, safety, and environmental stewardship.

Local authorities and employees echoed the sentiment, noting that Los Pelambres has not only brought economic growth but has become “an integral part of the region’s identity.”

Looking Ahead

With an eye on the future, Antofagasta is focusing on:

• Extending mine life through exploration and operational innovation

• Increasing renewable energy use in mining operations

• Enhancing digital technologies for safety and efficiency

• Ensuring continued community engagement and inclusion

The 25-year milestone is a testament to the enduring value of Los Pelambres in a rapidly changing global mining landscape.

Los Pelambres’ 25th anniversary marks a proud chapter in the history of Chilean mining. As the demand for copper continues to rise—driven by global electrification, green energy transitions, and digital infrastructure—Antofagasta’s flagship mine remains a vital player in ensuring sustainable supply, economic contribution, and regional development for decades to come.