Codelco

Codelco, formally the National Copper Corporation of Chile, is a state-owned mining company responsible for operating some of Chile’s most important copper assets. Its principal business is the exploration, extraction, processing, refining and sale of copper, with associated production of molybdenum and smaller quantities of other metals recovered during processing. The company is headquartered in Santiago and sells into international commodity markets, making it a strategically important supplier to the global copper industry and a major contributor to Chilean public finances. The organization emerged from the nationalization of Chile’s large copper industry. A government Copper Office was established in 1955, and in 1966 it was transformed into the Copper Corporation of Chile. Chile nationalized the country’s copper mines through a constitutional reform enacted in 1971 under President Salvador Allende. The present corporate entity was formally created by decree in 1976. Codelco consequently inherited a portfolio that included operations previously controlled by foreign mining companies, including the historic Chuquicamata complex and El Teniente. Codelco’s principal commercial product is refined cathode copper, although its operations also produce copper concentrates, anode copper, molybdenum concentrates and by-products such as rhenium, gold and silver. Its major mining centers have included Chuquicamata and Radomiro Tomic in the north, Ministro Hales, Salvador, Andina and El Teniente, together with the company’s interest in El Abra. Ventanas has also been associated with the company’s processing and refining activities. Codelco operates across the mining value chain, from geological research and project development to concentration, smelting, electrorefining and marketing. The company has historically ranked among the leading copper producers worldwide. Production reached approximately 1.66 million tonnes of copper in 2007, according to the cited reference material. More recent output has been affected by declining ore grades, aging infrastructure, geomechanical difficulties and the technical complexity of extending mature mines. Problems affecting El Teniente, Chuquicamata and Ministro Hales contributed substantially to production declines between 2021 and 2023. The reference material identifies Radomiro Tomic and El Teniente as Codelco’s most productive mines in 2025 and reports 1.332 million tonnes of copper production for that year. Codelco’s long-term strategy has included major modernization projects. Chuquicamata has been transitioned from a historic open-pit operation toward underground block-caving, while other investments seek to maintain mill feed, manage declining grades and develop deeper or more technically challenging resources. The company has also participated in Chile’s lithium policy. In 2025 it established Nova Andino Litio with SQM in connection with lithium-brine operations in the Salar de Atacama, and it partnered with Rio Tinto on lithium-brine development in the Salar de Maricunga, according to the supplied reference material. As a wholly state-owned enterprise, Codelco’s profits and governance are closely connected to the Chilean state. Its board is appointed through the state’s institutional framework and includes senior government representation. Codelco has historically transferred substantial resources to the national treasury, while also carrying responsibility for financing capital-intensive mine extensions, environmental controls, worker safety and technological upgrades. Its public role gives it an importance that extends beyond ordinary corporate performance: production, investment, labor relations, environmental management and governance at Codelco all have national economic and political significance. Corporación Nacional del Cobre de Chile, widely known as Codelco, is Chile's state-owned copper mining company. It owns and operates a portfolio of major deposits and processing facilities in Chile and sells refined copper, copper concentrates, molybdenum and other associated products to customers in international markets. The company is not a commercial bank or a financial-services business; its core industry is mining and metals production. Codelco's institutional origins lie in Chile's nationalization of large-scale copper mining during the early 1970s. Constitutional and legislative measures transferred the country's principal foreign-owned copper operations to the Chilean state. In 1976, Decree Law 1,350 established Codelco as a separate state enterprise to manage the nationalized assets and commercialize their output. The company subsequently became the operating vehicle for the state's principal copper holdings, including the historically important Chuquicamata and El Teniente mining districts. The company's operating base is concentrated in Chile's central and northern mining regions. Its assets include the Chuquicamata underground and open-pit operations, Radomiro Tomic, Ministro Hales, Gabriela Mistral, Salvador, Andina and El Teniente. These sites use different combinations of open-pit mining, underground mining, concentration, smelting, refining and hydrometallurgical processing. Codelco therefore participates across much of the copper value chain, from extraction to the production of saleable concentrates, anodes and cathodes. El Teniente is among the world's largest underground copper mines, while Chuquicamata is one of the industry's best-known long-lived mining districts. Copper is Codelco's principal business and the central source of its revenue and strategic importance. Molybdenum, a by-product of some copper operations, is also commercially significant, and the company has reported other recoverable by-products depending on the mine and processing route. Its customers and trading counterparties are distributed across global industrial markets, including manufacturers and processors serving electrical equipment, construction, transport, machinery and renewable-energy supply chains. As a state-owned enterprise, Codelco has a dual role. It must operate as a large-scale mining company while generating fiscal contributions for Chile and maintaining long-term stewardship of nationally owned mineral resources. Its governance, capital spending, labor relations, environmental performance and production plans are consequently matters of public policy as well as corporate management. The company has invested in mine-life extension, underground conversion, replacement infrastructure, water management, decarbonization and other projects intended to sustain production from aging deposits. Codelco's principal challenges include declining ore grades at mature mines, technically complex expansion projects, rising capital requirements, water and energy constraints, environmental obligations, labor negotiations and volatility in global copper prices. Its future performance depends heavily on the execution of structural projects such as Chuquicamata Underground, the Andina Transfer project, El Teniente's New Mine Level and other replacement or expansion programs. Codelco remains active and strategically important, but its production outlook and finances are sensitive to project delivery, operating conditions and the international copper market. Codelco's long-term strategy includes major modernization projects. Chuquicamata has shifted from historic open-pit mining to underground block-cave mining, while other investments aim to sustain concentrator feed, manage declining grades and develop deeper or more technically demanding resources. The company is also involved in Chile's lithium policy. In 2025 it formed Nova Andino Litio with SQM, involving lithium-brine operations in the Salar de Atacama, and partnered with Rio Tinto on lithium brine in the Salar de Maricunga.

Codelco’s institutional history began with Chilean efforts to create a stronger public role in the copper industry. Law 11,828, enacted on May 5, 1955, established the government’s Copper Office. In 1966, Law 16,425 transformed that body into the Copper Corporation of Chile, commonly known as Codelco. These reforms preceded full nationalization and gave the state increasing authority over the country’s strategically important copper resources. A constitutional reform approved on July 11, 1971 transferred ownership of Chile’s copper mines and deposits to the state. The measure was adopted during Salvador Allende’s presidency and nationalized assets that had previously been controlled by foreign mining companies. The corporate structure of the modern National Copper Corporation of Chile was formalized by decree on April 1, 1976. Codelco therefore became the institutional vehicle through which the Chilean state owned and operated the nationalized copper industry. Several of Codelco’s assets have much older histories. Copper extraction at Chuquicamata predates modern industrial mining; archaeological evidence includes a miner’s remains known as the “Copper Man,” dated to approximately the sixth century. Large-scale modern development began in the early twentieth century after engineers developed methods for treating the district’s extensive low-grade oxidized ores. The Chile Exploration Company, organized by the Guggenheim interests, began industrial production in 1915. Anaconda Copper later acquired control, and the mine was ultimately transferred to the Chilean state through the 1971 nationalization before becoming part of Codelco in 1976. Chuquicamata initially relied heavily on acid leaching and electrolysis of oxidized ore. As those resources were depleted, Codelco and its predecessors expanded milling and flotation capacity to process deeper secondary sulfides. The operation became one of the world’s largest open-pit copper mines, but declining grades and increasing depth eventually made continued open-pit production less attractive. Codelco developed an underground block-caving project to access ore beneath the pit and extend the life of the complex. Radomiro Tomic, north of Chuquicamata, was identified during earlier exploration but became commercially viable with advances in solvent extraction and electrowinning. Mining began in 1997, using open-pit extraction followed by leaching and production of copper cathodes. The broader Codelco Norte area also includes other northern deposits and processing facilities. Ministro Hales was developed as a technically demanding source of sulfide ore; its high arsenic content required specialized treatment and made the project important both as a production source and as a test of processing technology. Codelco’s portfolio also includes the Salvador and Andina operations and the El Teniente complex. El Teniente is one of the company’s major long-life underground assets and has required substantial investment as mining progresses deeper into a geologically complex orebody. Andina is another significant central Chilean mining division. The company has also held a 49 percent interest in the El Abra mine, while undertaking exploration and development work on additional prospects. Environmental management has been a persistent part of Codelco’s history. Earlier operations, particularly around Chuquicamata, were associated with dust, arsenic exposure, sulfur dioxide emissions and impacts on nearby communities and waterways. The Chuquicamata settlement was eventually closed and residents were relocated to Calama. Modern processing controls, sulfuric-acid plants and emission-reduction programs have improved sulfur capture, although environmental concerns remain relevant to the company’s social license and regulatory obligations. From the 2000s onward, Codelco confronted a combination of mature assets, declining grades, rising costs, operational disruptions and a large investment requirement. Production was high in 2007 but later stagnated or declined. The supplied reference attributes a significant portion of the decline between 2021 and 2023 to geomechanical problems at El Teniente, Chuquicamata and Ministro Hales. In response, the company has pursued structural mine projects, processing upgrades, underground development and new resource opportunities. Codelco’s role expanded beyond copper following Chile’s National Lithium Strategy, launched in 2023. In 2025 the company formed Nova Andino Litio with SQM in relation to Salar de Atacama lithium-brine operations and partnered with Rio Tinto on the Salar de Maricunga. These initiatives represent a diversification of Codelco’s resource portfolio while preserving copper as its core business. Governance remains closely linked to the Chilean state. The board is appointed through government channels and includes the mining and finance ministers as well as labor representatives. Codelco is permitted to dispose of assets only with approval from the Chilean Copper Commission. Its profits have historically been transferred to the treasury, while the company must simultaneously fund mine replacement, safety, environmental compliance and modernization. This combination of commercial, fiscal and political responsibilities defines Codelco’s distinctive position in the global mining industry. Chile's modern copper industry was shaped by the nationalization of large-scale copper operations in the early 1970s. Before nationalization, several of the country's most important mines were controlled by United States-based companies. The Chilean state progressively acquired control, and a 1971 constitutional reform nationalized the principal foreign-owned copper mines. The nationalized properties included the major mining districts that later formed the foundation of Codelco's operating portfolio. Decree Law 1,350, enacted in 1976, created Corporación Nacional del Cobre de Chile as a separate state enterprise. Its purpose was to administer, operate and market the nationalized copper assets. Codelco inherited a geographically diverse system of mines, concentrators, smelters and refineries, including Chuquicamata in the north and El Teniente near Rancagua. These assets had long production histories but required continuing investment, modernization and geological development. During the late twentieth century, Codelco consolidated its role as Chile's principal copper producer and a major source of public revenue. The company developed and expanded deposits across the country's mining belt, including Salvador, Andina and Radomiro Tomic. It also increased its participation in downstream processing and international marketing. Copper remained the company's dominant product, while molybdenum and other by-products added value to selected ore streams. Codelco's twentieth- and early twenty-first-century history has been defined by the need to replace or extend mature mines. Chuquicamata, one of the world's most famous open-pit copper mines, faced declining ore grades and increasing depth. Codelco responded with the Chuquicamata Underground project, which converted the district to underground block-cave mining and was inaugurated in 2019. At El Teniente, the company developed the New Mine Level project to maintain access to deeper resources. Other structural programs have targeted Andina, Salvador, Radomiro Tomic and processing infrastructure. The company has also faced changing expectations around governance, environmental performance and sustainability. As a state enterprise, it is expected to contribute to the Chilean treasury while funding the large capital projects needed to preserve future production. Water scarcity in northern Chile, energy consumption, tailings management, emissions, community relations and worker safety have become central operating concerns. Codelco has therefore pursued water-efficiency programs, renewable-energy procurement, emissions reduction and modernization of its processing facilities, although implementation has involved technical, financial and social challenges. In the 2020s, Codelco remained a leading global copper producer but confronted production pressure from aging assets, lower grades, project delays and increased investment requirements. At the same time, Chile's policy emphasis on strategic minerals expanded Codelco's prospective role into lithium. In 2024, the company announced an agreement with SQM intended to continue lithium operations in the Atacama salt flat under a partnership structure, subject to regulatory and other conditions. This initiative represented a strategic broadening of the state mining company's role while copper continued to define its identity and economic importance. In 2011, Codelco exercised an option associated with a minority interest in Anglo American Sur, a major Chilean copper operation, and pursued legal and commercial remedies after Anglo American announced a transaction affecting the ownership structure. The dispute was eventually resolved through a negotiated restructuring that left Codelco with an indirect minority position in Anglo American Sur alongside a partner.

• 2025

  Codelco expands into lithium

  [1]Codelcoen.wikipedia.org

  Codelco created Nova Andino Litio with SQM and partnered with Rio Tinto on projects involving Chilean lithium brines.

• 2024

  Codelco agrees a lithium partnership framework with SQM

  [6]https://www.codelco.com/codelco.com

  Codelco and SQM announced an arrangement intended to continue Atacama lithium production through a partnership with state participation.

• 2023

  Chile launches National Lithium Strategy

  [1]Codelcoen.wikipedia.org

  The national strategy provided the policy context for Codelco's subsequent expansion into lithium.

• 2019

  Chuquicamata underground operation is inaugurated

  [6]https://www.codelco.com/codelco.com

  Codelco inaugurated the underground transformation of Chuquicamata, a major mine-life extension project for the historic district.

• 2011

  Anglo American ownership dispute begins

  [7]Anglo American ownership dispute beginsreuters.com

  Codelco exercised an option connected with a minority interest in Anglo American Sur, beginning a protracted legal and commercial dispute over the ownership structure of the Chilean assets.

• 1997

  Radomiro Tomic begins mining

  [1]Codelcoen.wikipedia.org

  Codelco commenced mining at Radomiro Tomic, using leaching and solvent extraction/electrowinning to produce cathode copper.

• 1976

  Modern Codelco formally established

  [1]Codelcoen.wikipedia.org

  Decree Law 1,350, dated April 1, formalized the present National Copper Corporation of Chile as a state enterprise responsible for operating and marketing Chile's nationalized copper assets.

• 1971

  Copper industry nationalized

  [1]Codelcoen.wikipedia.org

  A constitutional reform transferred ownership of Chile's copper mines and deposits to the state, nationalizing the principal foreign-owned copper mines and creating the asset base later administered by Codelco.

• 1971

  Large-scale copper mining is nationalized

  [5]Library of the National Congress of Chile: constitutional historybcn.cl

  Chile nationalizes the principal foreign-owned copper mines, creating the asset base later administered by Codelco.

• 1966

  Copper Corporation of Chile created

  [1]Codelcoen.wikipedia.org

  Law 16,425 transformed the Copper Office into the Copper Corporation of Chile.

• 1955

  Government Copper Office established

  [1]Codelcoen.wikipedia.org

  Law 11,828 created Chile's Copper Office, an early institutional foundation for state participation in the copper sector.

A state-owned, vertically integrated Chilean mining group centered on large-scale copper production, with national strategic importance and a growing role in lithium development. A nationally strategic, vertically integrated copper producer whose scale, mineral reserves and fiscal role make it one of Chile's most important state enterprises and one of the leading companies in the global copper industry.

• Refined copper

  Copper cathode

  Electrolytic copper cathode is Codelco's principal commercial product. It is produced through refining routes that can include solvent extraction and electrowinning for oxide ores, as well as smelting and electrorefining for concentrates. Cathode is sold to industrial customers and commodity-market participants worldwide, including fabricators that use high-purity copper in wire rod, electrical components, construction products and machinery.

• Copper intermediate

  Copper concentrate

  Copper concentrate is produced by crushing, grinding and flotation of sulfide ore. Codelco's concentrators recover copper minerals and commonly separate molybdenum-bearing material as a further product stream. Concentrate is supplied for smelting and refining within Codelco's network or through external commercial arrangements.

• Mining by-product

  Molybdenum

  Molybdenum is recovered from several of Codelco's copper deposits and is an important secondary business. It is generally separated from copper flotation streams and marketed as concentrate or processed material for industrial uses including alloying and catalysts.

• Lithium · 2025

  Lithium brine

  Through its 2025 arrangements with SQM and Rio Tinto, Codelco entered lithium-brine development in the Salar de Atacama and Salar de Maricunga. These activities broaden the company beyond its historic copper focus.

• Refined copper

  Copper cathodes

  Electrorefined or electrowon copper cathodes are among Codelco's principal saleable products. They are shipped to industrial customers and fabricators that use high-purity copper in wire rod, electrical components, construction products, machinery and other applications.

• Copper mining

  Copper concentrates

  Concentrates are produced by crushing, grinding and flotation of sulfide ores at Codelco's mining complexes. They are supplied to smelters, where copper and associated metals are recovered through further processing.

• Smelted copper

  Copper anodes

  Copper anodes are an intermediate output from smelting. Codelco's smelting and refining chain converts mineral concentrates into anodes that can be electrolytically refined into high-purity cathodes.

• Mining by-products

  Molybdenum products

  Molybdenum recovered from selected copper ores is an important by-product of Codelco's operations. It is marketed for uses including alloying, catalysts and other industrial applications.

• Lithium · 2024

  Lithium partnership activities

  Through its agreement with SQM, Codelco is positioned to participate in the continuation of lithium production in the Atacama salt flat. This is a strategic activity associated with the company rather than its historic core product line.

• Smelted copper

  Copper anode

  Copper anodes are an intermediate output from smelting. Codelco's smelting and refining chain converts mineral concentrates into anodes that can be electrolytically refined into high-purity cathodes.

• 2026

  Alleged inflation of 2025 production figures

  According to the supplied reference material, Codelco was suspected of inflating reported 2025 production figures. The company ordered 6,322 workers to repay performance bonuses linked to that year and commissioned KPMG to conduct a large-scale audit.

  Source

Read more

• 2025

  Diversification into lithiumStrategy

  Background

  Chile's National Lithium Strategy encouraged greater state participation in lithium development.

  Action taken

  Codelco formed Nova Andino Litio with SQM and partnered with Rio Tinto on lithium-brine opportunities.

  Aftermath

  The company expanded its strategic resource portfolio beyond copper while retaining copper mining as its core activity.

  Source

• 2024

  Expand into a state-participated lithium partnershipStrategy

  Background

  Chile sought to strengthen state participation in lithium while maintaining production and attracting technical and commercial capabilities for the Atacama operation.

  Action taken

  Codelco and SQM announced an agreement intended to continue lithium production through a partnership structure, subject to required approvals and conditions.

  Aftermath

  The agreement broadened Codelco's strategic scope beyond copper and made the company a central participant in Chile's lithium policy.

  Source

• 2019

  Convert Chuquicamata from open-pit to underground miningGeneration change

  Background

  The historic open pit had become deeper and more costly to operate, while the district still contained substantial underground resources.

  Action taken

  Codelco brought the Chuquicamata Underground project into operation, using underground block-cave mining to extend the productive life of the district.

  Aftermath

  Chuquicamata entered a new operating phase, although ramp-up, construction complexity and production performance remained important management issues.

  Source

• 2011

  Exercise the Anglo American Sur purchase optionM&A

  Background

  Codelco held an option associated with a minority interest in Anglo American Sur, a major Chilean copper operation, and sought to exercise it before the asset's ownership changed.

  Action taken

  Codelco exercised the option and pursued legal and commercial remedies after Anglo American announced a transaction affecting the ownership structure.

  Aftermath

  The dispute was eventually resolved through a negotiated restructuring that left Codelco with an indirect minority position in Anglo American Sur alongside a partner.

  Source

• 2010

  Transition of Chuquicamata toward underground miningGeneration change

  Background

  The historic open pit faced declining grades and increasing economic and technical challenges as mining progressed deeper.

  Action taken

  Codelco developed an underground block-caving project to access ore beneath the open pit and extend the complex's productive life.

  Aftermath

  The project became a central part of Codelco's strategy for maintaining northern Chilean copper production.

  Source

• 1976

  Create a dedicated state copper enterpriseStrategy

  Background

  After nationalization of Chile's principal copper mines, the state needed a single institutional structure to operate the assets, market production and manage the industry's fiscal contribution.

  Action taken

  Chile established Codelco by Decree Law 1,350 as a state enterprise responsible for the nationalized copper operations.

  Aftermath

  Codelco became the long-term operating and commercial vehicle for Chile's principal state-owned copper assets.

  Source

• 1971

  Acceptance of state nationalizationStrategy

  Background

  Chile's constitutional reform transferred ownership of the country's copper mines and deposits to the state.

  Action taken

  The nationalized assets were placed within the state copper framework that later became Codelco.

  Aftermath

  Codelco became the central state vehicle for owning and operating Chile's major copper mines.

  Source

• 2019-10-11

  SNC-Lavalin and Codelco reach settlement[8]SNC-Lavalin与Codelco达成和解toronto.citynews.ca

  Reported: 2019-10-11

  SNC-Lavalin said it reached a settlement with Chilean state-owned copper mining company Codelco over Codelco’s decision to terminate a mining and metallurgy contract. The settlement ended all arbitration procedures; no financial details were provided.

1. 1Codelcoen.wikipedia.org
2. 2Codelco official websitecodelco.com
3. 3Codelco annual reports and corporate memorycodelco.com
4. 4Chile Law 1,350 establishing Codelcoleychile.cl
5. 5Library of the National Congress of Chile: constitutional historybcn.cl
6. 6https://www.codelco.com/codelco.com
7. 7Anglo American ownership dispute beginsreuters.com
8. 8SNC-Lavalin与Codelco达成和解toronto.citynews.ca
9. 9SNC-Lavalin reaches settlement over Chile mining contract terminationhalifax.citynews.ca