El Soldado enters a new era of copper mining through Anglo American’s $295 million investment

Across the global copper mining industry, a major strategic shift is underway. Instead of focusing solely on developing new greenfield deposits—projects that are increasingly expensive, slow to permit, and often socially contested—major producers are turning inward to unlock more value from existing mines.

This shift is redefining how mining companies think about aging assets. The key question is no longer simply how much ore remains in the ground, but whether new [[PRRS_LINK_1]] can fundamentally extend mine life, improve efficiency, and reduce environmental impact at the same time. A clear example of this transformation is [[PRRS_LINK_2]] US$295 million investment in the El Soldado copper mine in [[PRRS_LINK_3]], one of the most important recent modernization projects in South American mining.

El Soldado: A Mature Copper Mine With Strategic Importance

Located in Chile’s Valparaíso Region, El Soldado is a mid-sized open-pit copper operation with additional underground development potential. Annual production has recently ranged between 39,500 and 40,200 tonnes of [[PRRS_LINK_4]], placing it well below Chile’s giant operations such as Escondida or Collahuasi, but still strategically relevant within Anglo American’s portfolio. The mine employs over 600 permanent workers and more than 1,000 contractors, making it an important economic pillar in the local community.

Anglo American holds a 50.1% controlling stake, with the remainder split between a Codelco–Mitsui joint venture (29.5%) and Mitsubishi Corporation.

Importantly, El Soldado also holds Copper Mark certification, a globally recognized standard for responsible mining practices covering environmental, social, and governance performance. This certification is becoming increasingly valuable as downstream industries such as electric vehicles and[[PRRS_LINK_5]] manufacturing demand more transparent and sustainable supply chains.

The Core Challenge: Declining Ore Grades

Like many mature copper mines worldwide, El Soldado faces a structural challenge: declining ore grades.

As higher-quality mineral zones are depleted, mining companies must process larger volumes of lower-grade material to maintain output. This leads to:

• higher energy consumption
• increased water usage
• rising operating costs
• greater environmental footprint

Without intervention, this natural decline eventually pushes mines toward closure. For El Soldado, that trajectory pointed toward an expected end of operations around 2027. Anglo American’s investment is designed to fundamentally change that timeline.

A $295 Million Strategy to Extend Mine Life to 2037

The Anglo American investment is not a single expansion project. It is a technology-driven transformation program aimed at extending the mine’s life by approximately 10 years, pushing operations out to 2037.

At its core, the strategy combines three major technological pillars:

• operational life extension infrastructure
• advanced ore sorting systems
• water-efficient tailings management

Early results already suggest strong performance. During pilot phases, copper output increased by 83% year-on-year in Q2, reaching approximately 13,700 tonnes, demonstrating the potential of the new systems even before full deployment.

Bulk Ore Sorting: Extracting More Value From Every Tonne

One of the most important innovations at El Soldado is bulk ore sorting technology, designed to separate higher-grade ore from waste material earlier in the production process. Instead of processing all mined material through energy-intensive grinding and flotation circuits, ore sorting allows the mine to pre-select economically viable material before it reaches the plant.

This delivers several major advantages:

• reduced water consumption
• lower energy usage
• decreased carbon emissions
• reduced processing waste

A pilot ore sorting facility is currently being developed as part of the broader investment program, marking a shift toward more selective and efficient mineral processing.

Hydraulic Dewatered Stacking: Solving Water Constraints in Chile

Water scarcity is one of the most pressing operational challenges for mining in central Chile, including the Valparaíso region. To address this, Anglo American has implemented Hydraulic Dewatered Stacking (HDS) technology, which was commissioned in 2022 and demonstrated at full scale in 2024.

This system is designed to recover more than 80% of water from tailings, significantly reducing water loss in processing operations.

Key benefits include:

• improved water recycling efficiency
• reduced environmental risk from tailings storage
• greater structural stability of tailings facilities
• lower long-term environmental liability

In a region facing persistent drought conditions, high water recovery is not just an operational advantage—it is essential for maintaining the mine’s long-term [[PRRS_LINK_6]] license to operate.

Coarse Particle Recovery: Unlocking Hidden Copper Value

The third major technological upgrade is Coarse Particle Recovery (CPR) flotation, which is already fully operational at El Soldado. This system improves copper recovery by processing coarser particles that traditional flotation systems would normally reject as waste.

The results are significant:

• approximately 16% improvement in copper recovery
• around 600 additional tonnes of copper per month
• no increase in energy consumption

This type of efficiency-driven production gain is increasingly important in the global copper industry, where new discoveries are rare and existing mines must become more productive without expanding physical footprint.

Environmental Performance Becomes a Competitive Advantage

The environmental implications of the El Soldado modernization go beyond regulatory compliance. The combination of ore sorting, water-efficient tailings [[PRRS_LINK_7]], and recovery optimization significantly reduces the mine’s overall environmental footprint.

For example:

• reduced energy use lowers emissions intensity
• improved water recycling reduces freshwater demand
• higher recovery rates reduce waste generation

These improvements are increasingly important as global copper buyers—especially in electric vehicle and clean [[PRRS_LINK_8]] chains—demand more sustainable sourcing standards. El Soldado’s Copper Mark certification further strengthens its position as a responsibly produced copper supplier in a tightening global market.

What El Soldado Reveals About the Future of Copper Mining

The significance of Anglo American’s investment extends far beyond a single mine in Chile. It reflects a broader structural reality in the global copper market: new large-scale deposits are becoming harder to discover, more expensive to develop, and increasingly delayed by permitting and social constraints.

At the same time, global demand for copper continues to rise due to:

• electric vehicles (EVs)
• renewable energy systems
• grid expansion
• data infrastructure growth
• industrial electrification

An electric vehicle alone requires significantly more copper than a traditional combustion-engine vehicle, while renewable energy systems such as wind and solar demand substantial copper inputs for infrastructure and transmission. This creates a long-term supply challenge that new mines alone may struggle to solve.

Technology Is Now Extending the Life of Existing Mines

El Soldado demonstrates a growing industry trend: [[PRRS_LINK_9]] is becoming the key tool for extending mine life rather than discovering new deposits.

Instead of relying solely on exploration, companies are now investing in:

• advanced processing technologies
• ore sorting systems
• water-efficient tailings solutions
• recovery optimization tools

This approach allows mature mines to remain productive for longer while improving both economic returns and environmental performance.

A Blueprint for the Future of Copper Production

Anglo American’s $295 million investment in El Soldado represents more than a mine upgrade—it is a blueprint for how the copper industry may evolve over the next decade. By combining technology [[PRRS_LINK_10]] with operational efficiency, the project shows that aging mines can still play a critical role in global supply, especially in a market where new discoveries are increasingly rare.

As copper demand continues to rise, the industry may depend less on finding new deposits and more on maximizing the value of existing resources through innovation, efficiency, and smarter processing systems. In that sense, El Soldado is not just extending its own life—it is helping redefine the future of copper mining itself.