SUBSIDIA- RIES & ASSOCIATED COMPANIES

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RIES &

ASSOCIATED

COMPANIES

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Page Page

SUBSIDIARIES AND

ASSOCIATED COMPANIES

MINING

Agua de La Falda S.A. 3

Codelco do Brasil Mineração Ltda. 3 Compañía Contractual Minera Los Andes 3

Compañía Minera Picacho 4

Exploraciones Mineras Andinas S.A. 5

Inca de Oro S.A. 5

Minera Gaby SpA 6

Sociedad Contractual Minera El Abra 6 Sociedad Contractual Minera Purén 7 Santiago de Río Grande S.A. 7

Promoly Ltda. 8

TRADING

Chile Copper Limited 8

Codelco Services Limited 8

Codelco Group (USA) Inc. 9

Codelco Metals Inc. 9

Codelco USA Inc. 10

Codelco Küpferhandel Gmbh 10

Deutsche Giessdraht Gmbh 10

Ck Metall Agentur Gmbh 11

Copper Partners Investment Limited 11 Codelco Shanghai Company Limited 11

ELECTRICITY

Geotérmica del Norte S.A. 12

Sociedad Gnl Mejillones S.A. 12

Energía Minera S.A. 13

RESEARCH & TECHNOLOGY

Biosigma S.A. 13

Instituto de Innovación en Minería y Metalurgia S.A. 14

Kairos Mining S.A. 14

Mining Information, Communication

and Monitoring S.A. (Micomo S.A.) 15 Mining Industry Robotic Solutions S.A. (Mirs S.A.) 15

Ecometales Limited 16

INVESTMENT

Codelco International Limited 16 Codelco Technologies Limited 17 Sociedad de Inversiones Copperfield Ltda. 17 Innovaciones en Cobre S.A. 18 Inversiones Mejillones 2 S.A. 18 Inversiones Tocopilla 2B S.A. 19 Inversiones Mineras Acrux SpA 19 Inversiones Mineras Becrux Ltda. 20

Inversiones Gacrux SpA 20

NEW USES OF COPPER & MOLYBDENUM

Ecosea Farming S.A. 20

Comotech S.A. 21

C4E S.A. 21

REAL ESTATE

Complejo Portuario Mejillones S.A. 21 Ejecutora Proyecto Hospital del Cobre Calama S.A. 22

HEALTH & PENSIONS

Asociación Garantizadora de Pensiones 22 Centro de Especialidades Médicas Río Blanco Ltda. 23

Clínica Río Blanco S.A. 23

Isapre Chuquicamata Ltda. 24

Isapre Río Blanco Ltda. 24

San Lorenzo Isapre Ltda. 25

Fusat 26

Isapre Fusat Ltda. 26

Centro de Especialidades Médicas 26

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AGUA DE LA FALDA S.A.

As at 31 December 2011

Legal Status RUT: 96.801.450-1

Incorporation: 25 July 1996.

Partners: Codelco 43.28% and Minera Meridian Limita-da 56.72%

Capital subscribed and paid by Codelco US$ 17,052,000.

Corporate Purpose

Prospecting, exploring and extracting from mining pro-perties that contain gold, precious metals and other metals, and subsequent marketing activities. Directors

Roberto Alarcón Bittner, Chairman Ricardo Palma

Charles Bruce Main Carlos Huete Lira (*) Nicolás Saric Rendic (*) Alternate Directors Sergio Orrego Flory Alejandro Gordon Farfán Jacqueline Francois Fuentes Jorge Skármeta Magri (*) Eduardo Foix Iñíguez (*) General Manager Felipe Núñez Cordero

Codelco’s Interest and Changes during 2011 Codelco holds a 43.28% interest and there were no changes in shareholding structure during the period under review.

Business Relations with Codelco

There were no sales or purchases of goods and services, except for contracts with Codelco.

Contracts with Codelco

The company has the following service contracts with Codelco: Freshwater, industrial water and power supply, and a lease contract.

Total Investment Ratio of Head Office 2011: US$ 5,768,000

2010: US$ 5,810,000

Total Asset Investment Ratio of Head Office 2011: 0.028%

2010: 0.029%

*Codelco directors or executive directors

CODELCO DO BRASIL MINERAÇÃO

LIMITADA

Legal Status

Incorporation: Brazil, 14 September 2001. Partners: Codelco International Limited: 90% Codelco Technologies Limited: 10%.

Series No. 33.2.0708361-1. Board of Trade R.J.

Corporate Purpose

Ownership interest in mining companies or ventures, of any kind in Brazil and/or overseas, as well as ma-naging own or third-parties assets; carrying out any activity related to mining, including but not limited to, research, exploration and extracting economic resou-rces and/or ore deposits in Brazil; in general, perfor-ming any other civil or commercial activity, directly or indirectly related to research, exploration, economic extraction, production or marketing mineral products or by-products.

Director

Marcos Goncalves General Manager Marcos Goncalves

Codelco International Ltda and Codelco Technologies Ltda. Interest and Changes during 2010

Codelco International Limited and Codelco Technolo-gies Limited have a 90% and 10% interest, respectively. There were no changes during the period under review. Business Relations with Codelco

There were no business relations between the com-panies, except as a dependant company of a Codelco subsidiary.

There were no contracts or acts with Codelco that subs-tantially influenced Codelco’s operations or results. *Codelco directors or executive directors.

COMPAÑÍA CONTRACTUAL MINERA

LOS ANDES, CCMLA

Trade Name: Compañía Contractual Minera Los Andes (CCMLA)

Incorporation: 16 May 1996, Series No. 273. Partners: Codelco 99.97% and CM Picacho 0.03% Notary’s Office: M. Gloria Acharán Toledo. Registered on page 117, in 1996, in the Property Registry and on page 9550, in the Shareholders’ Book of the Santiago Mining Registrar.

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Capital subscribed and paid by Codelco US$ 17,650

Corporate Purpose

Geological exploration and other kinds of exploration to find and survey ore bodies in Chile or overseas. Board of Directors

Francisca Castro Fones, Chairman (*) Eduardo Foix Iñíguez (*)

Carlos Huete Lira (*) Nicolás Saric Rendic (*) María de los Ángeles Pérez (*) General Manager

Nicolás Saric Rendic (*)

Codelco’s Interest and Changes during 2011 Codelco holds a 99.97% interest. The interest contri-buted in March 2009, equivalent to US$ 1,550,000, to exercise the option to buy Porteñas mining properties, changed from 99.966% to 99.97% during 2009.

Its exploration activities are temporarily at a stands-till, its properties are being explored under options contract that in the future may become public limited companies. Durin the year, Codelco paid, on behalf of the company, mine maintenance work, expenses that are recognised under the accounts between the Companies.

Properties: Los Lobos and Desierto are respectively being explored by Sociedad Minera El Águila Limitada, Minera MMX de Chile S.A., while Antofagasta Minerals S.A. will commence work at Sierra Jardín deposit during the first half of 2012. During the year, Rio Tinto Mining and Exploration Limited/Agencia in Chile completed activities at Exploradora and Esteli properties, termi-nating the respective option contracts.

In February 2011, CCM Los Andes sold to Minera PanAust IDO Ltda., its stake in Inca de Oro S.A., which represents a 16.78% interest.

There were no contracts that significantly influenced Codelco’s operations.

2010: US$ 303,000

2010: 0.001%

COMPAÑÍA MINERA PICACHO

Trade Name: Compañía Minera Picacho. Incorporated on 26 September 1994.

Partners: Codelco 99.99% and Sociedad de Inversiones-Copperfield Ltda. 0.01%

Notary’s Office: Andrés Rubio Flores, under Series No. 6552/94.

Capital subscribed and paid by Codelco US$ 1,213,000

Corporate Purpose

It was originally incorporated in 1994 by Codelco and Sociedad Minera Mount ISA Chile S.A. to carry out geological exploration on property owned by Codelco and Mount ISA. In 1997, Codelco bought Mount ISA’s shares and expanded the company’s business activities in order to apply for water exploration permits and obtain water use rights, recently becoming its main business activity.

Board of Directors

Carlos Huete Lira, Chairman (*) Nicolás Saric Rendic (*)

Hernán Sepúlveda Astorga (*) General Manager

Álvaro Puig Godoy (*)

Codelco’s Interest and Changes during 2011 Codelco directly and indirectly holds 100% interest. The Board of Directors of the principal shareholder, Codelco Chile, agreed on 23 December 2009 (Agree-ment 53/2009, 26 November 2009), that its subsidiary Santiago de Río Grande would sell its stake (1 share in Cía. Minera Picacho) to its other subsidiary Sociedad Inversiones Copperfield Ltda., changing the sharehol-der structure.

Business Relations with Codelco None.

Mandate to Codelco that authorises exploration acti-vities in areas where Picacho has exploration requests approved and/or undergoing approval effective until December 2010.

Total Investment Ratio of Head Office 2011: US$ 126,000

2010: US$ 127,000

2010: 0.001%

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EXPLORACIONES

MINERAS ANDINAS S.A.

Exploraciones Mineras Andinas S.A. Incorporation: 29 July 2004.

Partners: Codelco 99.9% and Sociedad de Inversiones Copperfield Ltda. 0.1%

Capital subscribed and paid by Codelco US$ 235,000.

Corporate Purpose

Provide planning, management and implementation services for mining exploration and water resources exploration programmes, providing services in: drilling, chemical analysis, sampling, lab analysis, geological and geophysical mapping, physical property measu-rement, material characterisation, support and other services required to implement such programmes; consulting services in geology and related fields; staff training in areas related to mining exploration; semi-nars, workshops and courses; publications.

Board of Directors

Carlos Huete Lira, Chairman (*) Nicolás Saric Rendic (*)

Humberto Fernandois Olivares (*) General Manager

Jorge Camacho Vidakovic

Codelco’s Interest and Changes during 2011:

As at 31 December 2011, Codelco held a 99.9% interest. There were no changes during the period under review. Business Relations with Codelco

The company provides geological exploration services. Contracts with Codelco

Since 15 October 2004, the company has entered into several contracts with Codelco in order to implement and execute Codelco’s exploration programmes in Chile. The contract currently in force is “Integral Mining Exploration Services for 2010-2011 Programmes”. It is now renewing for the period 2012-2013, the service contract for mining concession database maintenance. Total Investment Ratio of Head Office

2011: US$ 1,146,000 2010: US$ 1,058,000

2010: 0.005%

INCA DE ORO S.A.

Incorporation: 11 June 2009

Partners: Codelco 34% and PanAust 66%

Notary’s Office: Osvaldo Pereira Gonzales, series N° 7.565.09, Abstract page 30101 N1 20730 in the Registry of Commerce of the Santiago Property Registrar. Capital subscribed and paid by Codelco

US$ 25,415,000 Corporate Purpose

Mineral resource exploration and mining, and mineral processing plants. Incorporate or form part of other partnerships in similar, related or complementary activities; or acquire or transfer rights or ownership. Acquisition, incorporation and sale of properties, ore deposits, concessions and mining rights in general, immovable or movable assets, and also securities and any other kind of financial instrument. Provide services in Chile and overseas for the mining industry.

Board of Directors Gary Stafford, Chairman Francisca Castro Fones (*) Iván Valenzuela (*) Francisco Tomic Robert McDonald General Manager Francisco Tomic

Codelco’s Interest and Changes during 2011 During the period under review, Codelco Chile held a 34% interest and PanAust held the remaining interest: 66%.

The company did not perform any business activities during 2011 with Codelco.

The company did not have any contracts with Codelco in 2011.

2010: US$ 2,959,000

2010: 0.015%

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SOCIEDAD CONTRACTUAL

MINERA EL ABRA

Incorporated by public deed on 28 June 1994.

Partners: Codelco 49% and Freeport-McMoRan Copper & Gold 51%

Notary’s Office de Santiago: Víctor Manuel Correa Valenzuela. Registered in the Santiago Registry of Commerce on page 149, No.40 in 1994. Shareholder Register no. 9054 page 20, 1994.

Trade Name: Sociedad Contractual Minera El Abra (SCM El Abra).

Subscribed and Paid-In Capital

As at 31 December 2011, capital subscribed and paid totalled US $647,059,000 divided into 100,000 shares. Shareholders are: Freeport-McMoRan Copper & Gold with 51,000 shares, and Corporación Nacional del Cobre de Chile, with 49,000 shares. Therefore, the capital subscribed and paid by Codelco is US$ 317,059,000. Corporate Purpose

Prospecting, exploring and mining El Abra ore deposit, located in the Region of Antofagasta, including its expansion and also adjacent or nearby areas. Extrac-ting, processing and treating ore mined at the deposit and surrounding areas; and transporting and trading products and by-products obtained from processing ore and other mining activities at the deposit. Directors

Francisco Costabal, Chairman Harry M. Conger

Mario Orellana Luis Farías Lasarte (*) Thomas Keller Lippold (*) Alternate Directors Joshua Olmstead Kathleen Quirk Steve I. Tanner Germán Morales (*) Mario Espinoza Durán (*) General Manager Joshua Olmstead

Codelco’s Interest and Changes during 2011 Codelco has a 49% interest, which has not changed since the company was incorporated.

Main business between the two companies: El Abra sells copper cathodes to Codelco. Codelco sells sul-phuric acid to SCM El Abra. The amount and price is negotiated on an annual basis.

The copper sales agreement is under a Marketing Agreement, signed on 15 June 1995 between SCM El Abra and Codelco Services Ltda. This agreement sets forth the termination date as 1 January 2012 and it can be automatically renewed on a year-to-year basis.

Sul-MINERA GABY SpA

Trade Name: Minera Gaby SpA

Closely Held Company, incorporated on 22 September 2006.

Corporate Purpose

Mine, explore, prospect, research, develop and operate ore deposits in order to extract, produce and process minerals, concentrates and other mineral products, and for this purpose install and operate ore processing and treatment plants.

Board of Directors

Diego Hernández C., Chairman (*) Rodrigo Toro Ugarte (*)

Thomas Keller Lippold (*) Patricio Enei Villagra (*) Luis Farías Lasarte (*) General Manager Claudio Olguín

Codelco’s Interest and Changes during 2011

Codelco has a 99.9% interest in subscribed and paid-up shares.

Minera Gaby S.A. (MGSA) and Codelco have business relations and contracts relevant to Gabriela Mistral mine operations and processing plants, under a Service Provision Contract, with 10% profit on costs and expenses planned by MGSpA. Other relations are under mandate contracts with legal representation, project investment activity management, IT and communica-tions services.

2010: US$ 33,577,000

2010: 0.166%

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SOCIEDAD CONTRACTUAL

MINERA PURÉN

As at 31 December 2011 Legal Status RUT: 76.028.880-2

Trade Name: Sociedad Contractual Minera Purén. Incorporation: 23 September 2003.

Partners: Codelco 35% and Mantos de Oro (Kinross) 65%

Registration: Property Register on page 121, no.31 in 2003, and Shareholders’ Register on page 185, no.207 in 2003, both at the Santiago Mining Registrar. Notary’s Office: Fernando Opazo Larraín Subscribed and Paid-In Capital

Codelco holds a 35% interest; Compañía Minera Man-tos de Oro holds a 65% interest. Capital subscribed and paid by Mantos de Oro is US$ 28,323. Capital subscri-bed and paid by Codelco is US$ 9,913,000.

Corporate Purpose

The purpose of the company is to explore, search, prospect, research, develop and operate mining de-posits, in order to extract, produce and process ores, concentrates and other mineral products. Additionally to install and operate ore concentrator and treatment plants; claim and purchase mining rights of any kind; sell, transport, export and market mineral substances and products. Also perform any action and enter into any contract and agreements that indirectly or directly result in achieving its business objective.

Directors

Andrés Verdugo Ramírez de Arellano, Chairman Alejandro Gómez Arenal (*)

Nicolás Saric (*) Luis Parra Falcón Rolando Cubillos Basaure Alternate Directors Marcos Álvarez Silva Carlos HueteLira (*) Eduardo Foix Iñíguez (*) John Robert Pritting Miguel Baeza Guíñez General Manager

Guillermo Olivares Ardiles

Codelco has a 35% interest with 350 shares subscribed-from a total of 1,000. There were no changes during the period under review.

No goods or services were sold or purchased between the company and Codelco.

There were no contracts that significantly affected Codelco’s operations and results.

2010: US$ 5,407,000

2010: 0.027%

*Codelco directors or executive directors..

SANTIAGO DE RÍO GRANDE S.A.

Incorporation: 2 October 1998.

Partners: Codelco 99.99% and CM Picacho 0.01% Notary’s Office: Gloria Cortez Escaida

Corporate Purpose

Its purpose is to obtain water rights and mining resour-ces exploration.

Board of Directors

Carlos Huete Lira, Chairman (*) Hernán Sepúlveda A. (*) Nicolás Saric Rendic (*) General Manager Mirtha Solari Espinoza (*)

Codelco directly and indirectly holds a 100 % interest. During the year, as agreed by the Board of the princi-pal shareholder, Codelco Chile on 23 December 2009 (Agreement No. 53/2009, on 26 November 2009), San-tiago de Río Grande sold its stake (1 share in Compañía Minera Picacho) to another Codelco Chile subsidiary, Sociedad Inversiones Copperfield Ltda.

At present Santiago de Río Grande does not have any business relations with Codelco.

During this period there were no contracts entered into with Codelco.

phuric acid sales contracts have been extended until 31 December 2014.

2010: US$ 542,625,000

2010: 2.676%

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CHILE COPPER LIMITED

Legal Status

Limited Liability Company created in England on 29 March 1971.

Partners: Codelco 100%

Corporate Purpose

Codelco Chile sales agent and representative for copper and molybdenum products in the UK, Spain, Scandina-via, Bulgaria, Turkey and other European and Middle Eastern markets.

It owns 80% of the subsidiary Codelco Services Ltd., the remaining 20% is owned by Codelco Kupferhandel GmbH.

Board of Directors

Rodrigo Toro U., Chairman (*) Raúl de la Piedra (*)

María de los Ángeles Pérez (*) Jürgen Leibbrandt Von Neefe (*) General Manager

Gonzalo Cuadra

Codelco holds a 100% interest. There were no changes during the period under review.

Agent through its subsidiary company Codelco Ser-vices Ltd. It trades copper and molybdenum to meet Codelco Chile contracts; and it also carries out hedging operations for Codelco Chile and its subsidiary Codelco Kupferhandel GmbH.

Copper sales agency contract. Molybdenum sales agen-cy contract.

2010: US$ 2,323,000

2010: 0.011%

CODELCO SERVICES LIMITED

Legal Status

Limited Liability Company incorporated in England on 16 August 1988.

Partners: Chile Copper Ltd. 80% and Codelco Kupfer-handel GmbH 20% .

Total Investment Ratio of Head Office 2011: US$ 0.000

2010: US$ 0.000

Total Asset Investment Ratio of Head Office 2011: 0%

2010: 0%

*Codelco directors or executive directors.

PROMOLY LIMITADA

Incorporation: 18 May 2011

Trade Name: Sociedad de Procesamiento de Molibdeno Ltda.

Limited Liability Company Partners: Codelco: 99.9%

Inversiones Copperfield Ltda.: 0.1% Capital subscribed and paid by Codelco US$ 1,288,000.

Corporate Purpose

The company processes or through third parties mo-lybdenum concentrates or other elements containing molybdenum and/or by-products obtained through the same processing, in order to transform them into commercial products and recover by-products. Board of Directors

Rodrigo Toro Ugarte, Chairman (*) Thomas Keller Lippold (*)

Isaac Aránguiz Miranda (*) Alternate Directors

Fernando Eimbcke Reccius (*) Mario Espinoza Durán (*) Germán Morales Gaarn (*)

Codelco’s Interest and Changes during 2011 Codelco: 99.9%

Inversiones Copperfield Ltda.: 0.1% Total Investment Ratio of Head Office 2011: US$ 181,000

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CODELCO GROUP (USA) INC.

Legal Status

Incorporated on 21 December 1992 as a corporation chartered in the State of Delaware, pursuant to section 108(c) under the General Corporation Law.

Capital subscribed and paid by Codelco

As at 31 December 2011, capital subscribed and paid by Codelco Chile corresponds to 1,000 shares totalling US$1,000.

Corporate Purpose

Any action or activity permitted under the General Corporation Laws in the State of Delaware. As at 31 December 2011, under this company there are two subsidiaries: Codelco-USA Inc. and Codelco Metals Inc; their objective is to act, but not limited to, as sales agent and representative of Codelco Chile for copper products and by-products in NAFTA markets; trade cop-per internally in NAFTA markets applying the relevant logistics procedures.

CODELCO METALS INC.

Legal Status

Subsidiary of Codelco Group (USA), Inc.

Incorporated under the Laws in the State of Delaware. Partners: Codelco Group (USA) Inc. 100%

Board of Directors

Rodrigo Toro U., Chairman (*) Patricio Enei Villagra (*) Raúl de la Piedra (*)

Jürgen Leibbrandt Von Neefe (*) General Manager

Michael Galetzki

Codelco has indirect ownership through its subsidiary Codelco Group USA Inc. Codelco Group USA Inc. holds a 100% interest. There were no changes during the period under review.

Acts as a copper and molybdenum physical trading company for the Company, in order to help Codelco Chile in trading activities and comply with its contracts by delivery to plants.

Agency contracts, copper purchase contracts. *Codelco directors or executive directors.

A subsidiary company of Copper Limited and associa-ted company of Codelco Kupferhandel GmbH. Corporate Purpose

Its corporate purpose is extensive, and can be summari-sed as manufacturing, storage and trade of products and provide services to third parties. Its normal business is limited to trading copper and molybdenum products and copper futures trade, in order to provide services to Codelco Chile and Codelco Kupferhandel GmbH, and other companies in the Codelco Group that the Head Office deems appropriate.

Board of Directors

Rodrigo Toro U., Chairman (*) Raúl de la Piedra (*)

María de los Ángeles Pérez (*) Jürgen Leibbrandt Von Neefe (*) Gonzalo Cuadra

General Manager Gonzalo Cuadra

Codelco’s Interest and Changes during 2011 Codelco has indirect ownership through its subsidia-ries Chile Copper and Codelco Kupferhandel. They had an 80% and 20% respectively. There were no changes during the period under review.

Codelco Services Limited trades copper and molybde-num to meet Codelco Chile contracts; it also provides hedging services for Codelco Chile and the related company Codelco Kupferhandel GmbH.

Board of Directors

Michael Galetzki

Codelco’s Interest and Changes during 2011 Codelco has a 100% interest. There were no changes during the period under review.

Business relations with Codelco are established through the subsidiary companies in Codelco Group Inc.; one as Codelco Sales Agent; another as a copper and molybdenum trading company.

Agency contracts, copper purchase contracts. Total Investment Ratio of Head Office 2011: US$ 2,583,000

2010: US$ 0.000

2010: 0%

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Corporate Purpose

Import, export, trade and transform metal in any form, especially copper; and trade equipment for the copper producing industry. This company’s objective is also to acquire and manage ownership in metal manufactu-ring companies, especially copper, and also undertake research work to obtain and manufacture metals. It holds 100% interest in the subsidiary CK Metall Agen-tur GmbH and 40% in the wire rod production plant Deutsche Giessdraht GmbH; in the latter it manages the cathodes supply, and also markets the wire rods produced.

Board of Directors

Rodrigo Toro Ugarte, Chairman (*) Jürgen Leibbrandt Von Neefe (*) María de los Ángeles Pérez (*) Fernando Eimbcke Reccius (*) General Manager

Heribert Heitling

Codelco’s Interest and Changes during 2011 Codelco had a 100% interest. There were no changes during the period under review.

Through the subsidiary CK Metall Agentur, GmbH acts as the commercial operations agent for Codelco Chile in Northern European countries (Germany, Austria, the Netherlands and Denmark). Through its associated company in the UK, Codelco Services Ltd., it performs hedging and other brokerage activities for Codelco. Contracts with Codelco

Cathode contracts.

2010: US$ 0,000

2010: 0%

DEUTSCHE GIESSDRAHT GmbH

Legal Status

Incorporated in Germany on 9 April 1975. An associated company of Codelco Küpferhandel GmbH.

Partners: Codelco Kupferhandel GmbH: 40% Norddeutsche Affinerie AG: 60%

Corporate Purpose Wire rod production plant. Directors

Stefan Boel, Chairman Raul de la Piedra (*) Heribert Heitling (*) Jens Jacobsen Björn Carsten Frenzel

CODELCO USA INC.

Legal Status

Subsidiary of Codelco Group (USA), Inc.

Incorporated under the Laws in the State of New York. Partners: Codelco Group (USA) Inc. 100%

Corporate Purpose

Acts as sales agent and represent Codelco Chile copper products and by-products in NAFTA markets, and also internally trades copper in NAFTA with the respective logistics procedure.

Board of Directors

Michael Galetzki

Codelco has indirect ownership through its subsidiary company Codelco Group USA Inc. Codelco Group USA Inc. has 100% interest. There were no changes during the period under review.

It has business relations with Codelco, as Codelco’s sales agent and representative before international organisations. Specific examples of the business relationship:

> Acts as sales agent and representative of Codelco- Chile in markets, organisations and activities assigned.

> Codelco Chile sales agent for copper, molybdenum, gold and silver, in Mexican, US and Canadian markets.

> Participates on behalf of Codelco Chile in

organisations, such as Nymex Non-Ferrous Metals Committee, Copper Development Association, International Molybdenum Association (IMOA), and Board of Directors of the Chilean-American

Chamber of Commerce (CACC).). Contracts with Codelco

Agency contracts, copper purchase contracts. *Codelco directors or executive directors.

CODELCO KÜPFERHANDEL GmbH

Legal Status

A limited liability company. Incorporated in Hamburg on 27 March 1981.

Capital subscribed and paid by Codelco € 3,000,000

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CK METALL AGENTUR GmbH

Legal Status

Limited Liability Company.

Incorporated in Germany on 7 July 1992. A subsidiary company of Codelco Küpferhandel GmbH.

Partners: Codelco Küpferhandel GmbH: 100% General Manager

Heribert Heitling

Codelco’s Interest and Changes during 2011 Codelco has indirect ownership through its subsi-diary company Codelco Küpferhandel GmbH. Codelco Küpferhandel GmbH has a 100% interest. There were no changes during the period under review.

A trade agent of Codelco Chile in Germany and Nor-thern European countries (Codelco Chile sales agent for copper products in Germany, Austria, the Nether-lands and Denmark). A Codelco Chile sales agent for molybdenum and other by-products in Germany, Austria, the Netherlands, Czech Republic, Slovakia and Poland. It coordinates logistics and supports shipping and delivery operations to customers.

Contracts with Codelco Cathode Contracts. Alternate Directors Michael Landau Fernando Eimbcke (*) Wilhelm Happ (*) General Manager Jürgen Jestrabek

Codelco’s Interest and Changes during 2011 Codelco has indirect ownership through its subsi-diary company Codelco Küpferhandel Gmbh. Codelco Küpferhandel GmbH has a 40% interest. There were no changes during the period under review.

Codelco Küpferhandel GmbH (Codelco subsidiary) has a direct relationship with the wire rod production plant Deutsche Giessdraht GmbH, and is its supplier in cathode supply management, and it also trades the wire rods produced.

COPPER PARTNERS

INVESTMENT LIMITED

Legal Status

Limited Liability Company.

Incorporated in Germany on 7 July 1992. A subsidiary company of Codelco Küpferhandel GmbH.

Partners: Codelco Küpferhandel GmbH: 100% General Manager

Heribert Heitling

Codelco’s Interest and Changes during 2011 Codelco has indirect ownership through its subsi-diary company Codelco Küpferhandel GmbH. Codelco Küpferhandel GmbH has a 100% interest. There were no changes during the period under review.

A trade agent of Codelco Chile in Germany and Nor-thern European countries (Codelco Chile sales agent for copper products in Germany, Austria, the Nether-lands and Denmark). A Codelco Chile sales agent for molybdenum and other by-products in Germany, Austria, the Netherlands, Czech Republic, Slovakia and Poland. It coordinates logistics and supports shipping and delivery operations to customers.

Contracts with Codelco Cathode Contracts.

CODELCO SHANGHAI LIMITED.

Legal Status

Trade Name: Codelco Shanghai Company Limited Incor-poration: The company is currently being incorporated. Partners: Codelco 100%

Capital subscribed and paid by Codelco: US$ 1,000,000.

Corporate Purpose

Act as a sales agent and represent Codelco Chile for its copper products and by-products in the Chinese markets, mainly dedicated to copper, molybdenum and other precious metals imports and exports; copper and molybdenum sales; and mining material and product supply agency services.

Directors

Rodrigo Toro Ugarte, Chairman (*) Raúl de la Piedra (*)

Jürgen Leibbrandt vN. (*) Patricio Enei (*)

Codelco’s Interest and Changes during 2011 Codelco has a 100% interest.

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SOCIEDAD GNL MEJILLONES S.A.

Incorporation: 31 January 2007

Partners: Codelco: 7% Suez Energy: 67%

Notary’s Office: Osvaldo Pereira González. Santiago Registry of Commerce on page 6,625 No.4,909, in 2007 Capital subscribed and paid by Codelco

As at 31 December 2011, capital paid by Codelco Chile totalled US$ 37,000, equivalent to 37% interest. Corporate Purpose

Production, storage, marketing, transport and distribu-tion of all kinds of fuel; and the acquisidistribu-tion, construc-tion, and operation of the facilities and infrastructure and other physical work required to transport, receive, process and store, both in Chile and overseas, by the company or in partnership with third parties.

Directors

Juan Clavería Aliste, Chairman Mario Espinoza Durán (*) Andrés Alonso Rivas (*) Luis Valenzuela Palomo Manlio Alessi Remedi Willem Van Twembeke Jean Louis Pairon Alternate Directors Albert Verhoeven José Antonio Álvarez (*) Francisco Danitz Miller (*) Francisca Castro F. (*) Valérie Barnich Jan Flachet Marleen Delvaux General Manager Frederik Janssens

As at 31 December 2011, Codelco’s interest in Sociedad GNL Mejillones S.A. was 37%.

Sociedad GNL Mejillones S.A. supplies regasified natu-ral gas to Codelco Chile.

>Sociedad GNL Mejillones S.A. has a regasified natural gas sales contract with Codelco, as per a take-or-pay agreement.

> It also has the same contract with SCM El Abra; Codelco also has a stake in this company. >Options contract whereby Codelco may choose between:

> Rights of use regarding the regasification terminal facilities for Codelco as a regasification service customers and other related services.

> Acquire ownership in Sociedad GNL Mejillones S.A., by subscribing and paying through a share capital increase

> Tariff payment agreement for granting guarantees on the ISDA contracts entered into between Sociedad GNL Mejillones S.A. and Morgan Stanley Capital Group Inc, Koch Supply and Trading LP and Barclays Bank PLC.

> Contracts with Complejo Portuario Mejillones S.A., a Codelco subsidiary, associated with a land lease on the property where the Sociedad GNL Mejillones S.A.facilities are located.

2010: US$ 0.000

2010: 0%

GEOTÉRMICA DEL NORTE S.A.

Incorporation: 29 December 2000

Partners: Codelco 0.4%, ENAP 48.6% and ENEL 51% Notary’s Office: José Musalem Saffie

Series No. 13.010/2000.

Santiago Registry of Commerce of the Property Regis-trar, on page 2 No. 2, 2001.

Capital subscribed and paid by Codelco $255 million (pesos).

Corporate Purpose

Research, exploration and operation of geothermal resources, located in northern Chile (1st, 2nd and 3rd Region); marketing its products, by-products, raw ma-terials, whether manufactured, semi-manufactured or not, directly or indirectly result from the activities sta-ted in the above number. Furthermore, the company may also carry out any other activity related, directly or indirectly with those listed above, to efficiently use the social organisation.

Board of Directors Nelson Muñoz, Chairman Rafael Sotil

Valerio Cecchi Luca Rossini

As at 31 December 2011 Codelco held a 0.4% interest. On 30 December 2009 the issued capital increased, which was only subscribed by Enap and Enel, therefore Codelco diluted part of its ownership.

The remaining interest was distributed between Enap (48.6%) and Enel (51%).

No business relations between the companies in 2011. Contracts with Codelco

No contracts between the companies. *Codelco directors or executive directors.

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BIOSIGMA S.A.

As at 31 December 2011 Legal Status RUT: 96.991.180-9 Incorporation: 31 May 2002 Partners: Codelco: 66.7%

Nippon Mining and Metals: 33.3% Nancy de La Fuente Hernández

Santiago Registry of Commerce of Property Registrar, on page 14,849 No.12.239 in 2002, and it was rectified on page 17.663 No.14,532.

Corporate Purpose

Develop processes and technology in the field of gen-mics, proteomics and bioinformatics for mining and, in general, apply the microorganism-based systems and other activities and businesses related to the above areas. The activities currently developed are techno-logical validation for biomass production and mineral bioleaching at an industrial scale and its application to Codelco resources during the first stage.

Directors

Ricardo Álvarez Fuentes, Chairman (*) Juan Enrique Morales Jaramillo (*) Pedro Antonio Morales Cerda (*) Mario Espinoza Durán (*) Keiichi Sato

Kenichi Murakami Alternate Directors Patricio Enei Villagra (*) Luis Castelli Sandoval (*) José Robles Becerra (*) Eduardo Foix Iñíguez (*) Susumo Kubo

Hirofumi Nakata General Manager Ricardo Badilla Ohlbaum

Codelco’s Interest and Changes during 2011 Incorporated by Codelco in association with the Japanese Nippon Mining and Metals Co. Ltd. As at 31 December 2011, Codelco had a 66.7% interest.

There were no changes during the period under review. Contracts with Codelco

Framwork Contract dated 24 January 2011, to develop and apply BioSigman Bioleaching Technlogy Projects to Codelcos Divisions’ mineral resources by applying expert services, through Lab Research, and Engineering Studies, for a maximum $6,480,000,000.

2010: US$ 2,046,000

2010: 0.010%

ENERGÍA MINERA S.A.

Incorporation: 15 June 2008

Partners: Codelco 99% and Sociedad de Inversiones-Copperfield Ltda. 1%

Notary’s Office: Osvaldo Pereira González. Registered in the Santiago Registry of Commerce on page 25340 No.18444, under number 19324, in 2008.

As at 31 December 2011, capital subscribed and paid by Codelco totalled US$ 24,752,000, for 990 shares equiva-lent to a 99% interest.

Corporate Purpose

The purpose of the company is to develop, directly or through a related party, individually or jointly with others, within Chilean territory or abroad, the fo-llowing activities: generate, supply, purchase and sell electricity; provide all kinds of energy services; obtain, transfer, purchase, rent, tax or operate in whatever way the relevant concessions and markets pursuant to the General Electric Services Law and other regula-tions that regulate energy services; request permits, authorisations and franchises to preserve, promote or develop the company’s business; purchase, sell, import, export, manufacture, produce, market, and distribute all kinds of goods or inputs, that are related to any kind of energy.

Board of Directors Patricio Enei Villagra (*) Andrés Alonso Rivas (*) Mario Espinoza Durán (*) General Manager Andrés Alonso Rivas (*)

Codelco’s Interest and Changes during 2011 As at 31 December 2011, Codelco had a 99% interest and Sociedad Inversiones Copperfield Ltda., 1%. There were no changes during this period.

Business Relations with Codelco No business relations in 2011. Contracts with Codelco

No contracts were entered into with Codelco. Total Investment Ratio of Head Office 2011: US$ 13,454,000

2010: US$ 0.000

2010: 0%

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KAIROS MINING S.A.

Legal Status RUT: 76.781.030-K

Incorporation: 12 December 2006. Partners: Codelco 40% and 60%

Closely held company, incorporated by public deed on 12 December 2006, authorised by the Santiago Notary’s Office, Eduardo Avello Concha and registered in the Registry of Commerce on page 363, no.295 in 2008 and published in the Official Gazette No.38.671 on 24 January 2008.

As at 31 December 2011, capital subscribed and paid by Codelco Chile totalled US$40,000, equivalent to 400 shares. The remaining 60% of shares is held by Hone-ywell Chile S.A.

Corporate Purpose

The purpose of this company is to provide automa-tion and control services for industrial and mining activities, and also provide technology and software licenses.

Board of Directors

Claudio Zamora Larreboure, Chairman Luis Castelli Sandoval (*)

José Robles Becerra (* Frank Whitsura David Sánchez General Manager Fernando Lorca Arancibia

Codelco Chile has a 40% interest in Kairos Mining S.A. There were no changes during the period under review. Business Relations with Codelco

Kairos Mining S.A. has a long-term service framework agreement currently in force with Codelco Chile. Contracts with Codelco

Service Framework Agreement to develop an automa-tion programme at Codelco’s concentrator plants, for a 5-year period (started on 3 April 2007), extendable for successive periods of 5-years.

10 September 2010, Amendment No. 1 to the Ser-vice Framework Agreements was signed, expressly incorporating the concentrator plants at Salvador and Ministro Hales Divisions, within the scope of the programme-initiative.

2010: US$ 105,000

2010: 0.001%

INSTITUTO DE INNOVACIÓN EN MINERÍA

Y METALURGIA S.A.

Instituto de Innovación en Minería and Metalurgia S.A. Incorporation: 24 September 1998

Partners: Codelco: 99.93% Cimm: 0.07% Series No. 3664/98

Santiago Notary’s Office: Antonieta Mendoza Escala. Capital subscribed and paid by Codelco

As at 31 December 2011, capital subscribed and paid by Codelco totalled US$ 3,298,000, representing 99.93%. Corporate Purpose

Develop metallurgical and mining technological inno-vation.

Board of Directors

Ricardo Álvarez Fuentes, Chairman (*) Pedro Morales Cerda (*)

Víctor Janer Pérez (*) Enrique Morales Jaramillo Andrés Weintraub Pohorille General Manager

Irene Astudillo F.

Codelco’s Interest and Changes during 2011 Codelco’s interest: 99.93%.

There were no changes during the period under review Business Relations with Codelco

Business relations between IM2 and Codelco started in 1998. At present the three-year Technological Innova-tion and Research Agreement for 2012, whereby IM2 provides services for preparing, and implementing technological innovation and research programmes and projects.

Technological Research and Innovation Contract. Customer.

Technical Collaboration Agreement. Customer. Services Agreement for Codelco’s Technical Documen-tation Centre. Supplier.

IT and Communications services contract. Supplier. Total Investment Ratio of Head Office

2011: US$ 5,024,000 2010: US$ 5,305,000

2010: 0.026%

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MINING INDUSTRY ROBOTIC SOLUTIONS

S.A. (MIRS S.A.)

Legal Status RUT: 76.869.100 - 2

Incorporation: 11 April 2007

Partners: Codelco: 36% Highservice Ltda.: 53% Nippon Mining & Metals Co. Ltd.: 9% Kuka Roboter GmbH: 2%.

Notary’sOffice: René Benavente Cash, registered on page 22,026 No. 16.060 in the Registry of Commerce of the Santiago Property Registrar in 2007.

As at 31 December 2011, capital subscribed and paid by Codelco totalled US$3,800,000, representing a 36% interest.

Corporate Purpose

Research, design, creation, invention, manufacture, installation, supply, maintenance and marketing in whatever form, all kinds of robotic products, robotic technology products or supplies required or comple-mentary to market and maintain such products in the mining and metallurgical industry, and related services; produce under licensing, license, and market product licenses, robotic technology processes and services for the mining and metallurgical industry and, also form any kind of firm and become a partner or shareholder in any existing firm.

Directors

Hugo Salamanca Poblete, Chairman Ricardo Álvarez Fuentes (*)

Mario Espinoza Durán (*) Eugenio Barhar Bortschenko Luis Morán Tamayo

Kenichi Murakami Francisco Salamanca Alternate Directors Jorge Lembeye

Nicolás Saric Rendic (*) Eduardo Foix Iñíguez (*) Jorge Fuller

Rodrigo Da Costa Guidi Kazuhiko Furukawa Javier Espinosa General Manager Carlos Carmona

Codelco has 67,925 shares, equivalent to 36% and the remaining shares are distributed between Industrial Support Company Limitada, 53%, Nippon Mining & Metals Co. Ltd., 9% and Kuka Roboter GmbH, 2%. Contracts with Codelco

At present, MIRS S.A. has a Framework Contract with Codelco to develop robotic solutions and im-plement operation and maintenance services for the technology’s life cycle, so as to facilitate the early incorporation of these solutions in Codelco’s processes.

MINING INFORMATION,

COMMUNICATION AND MONITORING

S.A. (MICOMO S.A.)

Trade Name: Mining Information, Communication and Monitoring S.A. (MICOMO S.A.)

Incorporation: 10 April 2006.

Partners: Codelco: 66%, NTT Advanced Technology Corporation: 17%, NTT Leasing Inc.: 17%.

Notary’s Office: César Ricardo Sánchez García. Registry of Commerce of the Santiago Property Registrar, on page 16,702, No.11,490, in 2006.

Capital subscribed and paid by Codelco Capital subscribed and paid by Codelco totalled US$1,980,000, representing a 66% interest. Corporate Purpose

MICOMO was incorporated by Codelco jointly with NTT Advanced Technology Corporation (Japan) and NTT Lea-sing (USA), Inc. The purpose of the company is to pro-vide, design and maintain ITC products (information technology and communications) and services related to Codelco; and extend the aforementioned business to mining companies in Chile and abroad.

Board of Directors

Mario Espinoza Durán, Chairman (*) Juan Enrique Morales Jaramillo Ricardo Álvarez Fuentes (*) Pedro Morales Cerda (*) Hiroshi Kotera

Yoshihisa Sakai General Manager Edgar Happke A.

Codelco has 66% of subscribed and paid shares. There were no changes during the period under review. Contracts with Codelco

In 2011 various Service Orders were signed with effective Framework Contract No. 4600006468: “NTT Technology Adaptation and Implementation Services” and No. 4600009138 “Micomo Services for develop-ment, validation, implementation and support during the technology’s life cycle.” Contract No. 4501218981 “Monitoreo BOTDR en Pilares de Producción de Mina Esmeralda,” was also signed by Teniente Division. Total Investment Ratio of Head Office

2011: US$ 1,835,000 2010: US$ 1,773,000

2010: 0.009%

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During this period it also generated a contract to con-solidate a new product, as part of the developments promised by MIRS. This is the Start Sheet detachment project Codelco Ventanas; it includes two additional phases that will be implemented in 2012 and 2013, which will create MMUS$ 3 in sales.

2010: US$ 2,537,000

2010: 0.013%

CODELCO INTERNATIONAL LIMITED

Legal Status

Incorporation: Bermuda 2000. Registration No. EC-28890.

Partners: Codelco: 100%

Corporate Purpose

Its purpose is to manage and control Codelco’s interest in various international projects. Through its subsi-diary Codelco Technologies Limited it has investments Ecometales Limited, a firm in Jersey-Channel Island, and its operating agency Ecometales Limited – Agency in Chile, to develop and mine biologically-based tech-nologies applied to copper and molybdenum mate-rials and concentrates. In partnership with Codelco, Technologies Limited has incorporated Codelco do Brasil Mineraçao Limitada in Brazil in order to develop exploration, mining and market development projects. It has a 6% interest in Quadrem International Holdings Limited, international company formed by companies related to mining to operate in the electronic market-place providing solutions for buying and selling goods and services.

In partnership with the Chinese company Album Enter-prises Limited (China Minmetals subsidiary) created in Bermuda (UK), the trading company Copper Partners Investment Ltd, each holding 50%. Codelco Interna-tional Limited, in December 2009 acquired the stake Santiago del Río Grande had in Sociedad de Inversio-nes Copperfield Ltda. and now has the latter’s 0.01% interest.

Board of Directors

Mario Espinoza Durán, Chairman (*) José Antonio Álvarez (*)

Patricio Enei Villagra (*)

Codelco’s Interest and Changes during 2011 Codelco has a 100% interest.

During the year, Codelco International Limited and its subsidiary Codelco Technologies Limited received dividends and return of capital from Codelco do Brasil Mineraçao and Copper Partners Investment Company Ltd.

There were no contracts between Codelco and Codelco International Limited that significantly influenced Codelco’s operations and results.

2010: US$ 19,799,000

2010: 0.978%

ECOMETALES LIMITED

Subsidiary company of Codelco Technologies Limited (100%). Incorporated on 22 de August de 2000 en Jersey (U.K.) (ACL).

Registry Number: 78014, Jersey Island. Notary’s Office: Goeffrey St. Clair Cornwall. Started Activities: 2001.

Corporate Purpose

Develop activities for all kinds of ore treatment and smelting, especially impurity treatment and ore recovery. Also develop innovations to treat smelter dust and other smelter and refinery effluents, applying environmentally sustainable technologies.

Directors

José Robles B., Chairman (*) Mario Espinoza Durán (*) Pedro Morales Cerda (*) Hernán Sepúlveda Astorga (*) Luis Farías Lasarte (*)

General Manager Iván Valenzuela R.

Partners’ Interest and Changes during 2010

Codelco Technologies Limited holds 100% interest, and no changes occurred during the period under review. Business Relations with Codelco

Provides processing services to Codelco Chile, through a contract to provide copper recovery processing servi-ces contained in the copper concentrate smelter dust, dated 31 March 2007.

> In November 2010 a commercial agreement was reached with Salvador Division to buy dust from Potrerillos smelter.

> In 2011 the following contracts were signed: > Solid industrial waste purchase – Ventanas Division > Mine Waste Treatment Plant Operation –

Chuquicamata Division

> Studies to build and operate a Hazardous Solid Waste Disposal Site - El Teniente Division. *Codelco directors or executive directors.

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CODELCO TECHNOLOGIES LIMITED

Legal Status

Incorporation: Bermuda 2000.

Partners: Codelco International Limited: 100%. Regis-tration No. EC-28891.

Corporate Purpose

Manage and control Codelco’s interest in various international projects. It has investments in Ecometa-les Limited on Jersey-Channel Island, and its operating agency Ecometales Limited – Agency in Chile, to deve-lop and mine biologically-based technologies applied to copper and molybdenum material and concentrate processing .and also in Codelco do Brasil Mineraçao Limitada, in Brazil, in order to develop exploration, extraction and market development projects. Board of Directors

Mario Espinoza Durán, Chairman(*) José Antonio Álvarez (*)

Patricio Enei Villagra (*)

Codelco International Limited’s Interest and Changes during 2011

Codelco International Limited has 100% interest and no changes occurred during the period under review. Business Relations with Codelco

During the year, Codelco Technologies Limited received dividends and return of capital from Codelco do Brasil Mineração, which have be used to reduce the debt of its head office, Codelco International Limited, with Codelco.

No direct acts or contracts between Codelco and Codelco Technologies Limited.

SOCIEDAD DE INVERSIONES

COPPERFIELD LIMITADA

Limited Liability Company incorporated by public deed on 12 December 2001.

Partners: Codelco 99.99% and Codelco International Limited 0.01%

Notary’s Office: Álvaro Bianchi Rosas. Registered in the Registry of Commerce on page 32430 No. 26478, on 14 December 2001.

Capital subscribed and paid by Codelco US$ 9,279,000

Corporate Purpose

Exploration and operation of mineral resources and processing plants; purchase, build and operate proper-ty, deposits and mining rights; and participate in any kind of company, taking up, directly or indirectly, rights and ownership.

Representatives of Partners Patricio Enei Villagra, Chairman (*) Mario Espinoza Durán (*)

José Antonio Álvarez (*)

Codelco’s Interest and Changes during 2011 Originally, after statutory amendments in 2008, Codelco had a 99.98% interest and Santiago de Río Grande S.A. 0.01%. After Codelco International Limited, a Codelco Chile subsidiary, purchased Santiago del Río Grande’s stake on 23 December 2009, the ownership of Sociedad de Inversiones Copperfield Ltda changed. Business Relations with Codelco

At present, Inversiones Copperfield Ltda. does not have business relations with Codelco, except as minority shareholder in the following companies:

Exploraciones Mineras Andinas S.A. (0.1%), Minera Gaby SpA (0.1%), Energía Minera S.A.(1.0%), Compa-ñía Minera Picacho (0.01%); Clínica San Lorenzo Ltda. (0.1%), Promoly Ltda. (0.1%), Inversiones Tocopilla 2B S.A. (0.01%), Copper for Energy S.A. (25%); and majority shareholder in Innovaciones en Cobre S.A. (99.9%). In 2007, as instructed by its owner, Codelco exercised its option to buy the Mocha property.

During this period under review no contracts were entered into with Codelco.

2010: US$ 14,179,000

2010: 0.070%

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INNOVACIONES EN COBRE S.A.

As at 31 December 2011 Legal Status RUT: 76.043.396-9 Incorporation: Series N° 20536/2008. Partners: Codelco: 0.1%

Sociedad de Inversiones Copperfield Ltda.: 99.9% Notary’s Office: Santiago Eighteenth Notary’s Office. Started activities: 30 December 2008.

Capital subscribed and paid by the firm US$ 4,424,000 and by Codelco $442,000.

Corporate Purpose

Analyse, research, invent, create, develop and imple-ment new applications, benefits and uses for copper and molybdenum. Promote, spread, distribute and market products that are manufactured incorporating new applications, benefits and uses for copper and/ or molybdenum. ; Represent both national or foreign companies, individuals or entities. Perform all kinds of activities that are directly and indirectly related to the above and any other activity the partners by common consent specify. All the activities that form part of the corporate purpose may be performed by the company or another company, either directly or by a third party. Directors

Jurgen Leibbrandt, Chairman (*) Nicolás Saric R. (*)

Alan Farcas G. General Manager Victor Pérez Vallejos (*)

Codelco’s Interest and Changes during 2011 Codelco directly has 0.1% interest in Innovaciones en Cobre S.A. and Sociedad Inversiones Copperfield Limitada (a Codelco Chile subsidiary) has the remaining 99.9% interest.

Company related to Codelco in order to invest in busi-ness and projects related to new copper and molybde-num applications.

Innovaciones en Cobre S.A. has no contracts with Codelco.

INVERSIONES MEJILLONES 2 S.A.

Incorporation: 13 November 2009

Partners: Codelco 34.8% e Inversiones Tocopilla 2B S.A.65.2%

Notary’s Office: Iván Torrealba Acevedo, registered on page 59,192, number 41,277, of the Registry of Com-merce, in 2009.

Corporate Purpose

The purpose of this company is to buy and sell secu-rities held as shares, bonds and other instruments issued by Empresa Eléctrica del Norte Grande S.A. Exercise all the rights and perform all the obligations as shareholder and holder of such securities, pursuant to the law and articles of association and, in general, buy, sell, invest in all kinds of intangible property, such as company bonds, shares, deposits, mutual fund pay-ments, share certificates, bills of credit, securities, etc.; manage such investments and receive returns; and participate in any other business or activity directly or indirectly related, associated and/or complementary to the corporate business

Directors

María de los Ángeles Pérez (*) Víctor Janer Pérez (*)

Eduardo Foix Iñíguez (*) General Manager Víctor Janer Pérez (*)

Codelco directly holds a 34.8% interest, and indirectly, 65.2% through its subsidiary Inversiones Tocopilla 2 B S.A. there were no change during the period under review.

2010: US$ 133,432,000

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INVERSIONES MINERAS ACRUX SpA

Incorporation: 16 September 2011

Trade Name: Inversiones Mineras Acrux SpA. Joint-Stock Company

Partners: Codelco: 100%

Corporate Purpose

Make investments in tangible or intangible, immovable or movable assets, shares and rights in firms, quotas in funds, bonds, trade instruments and other securi-ties. The aforementioned, both in Chile and overseas, directly or indirectly related to mining activities or business and are issued by mining companies; mana-ge, transfer and use them as well as receive benefits. Likewise, provide funding to third parties through loan transactions or other operations or contracts signed for the same purpose.

Board of Directors

Diego Hernández Cabrera, Chairman (*) Thomas Keller Lippold (*)

Francisca Castro Fones (*) Patricio Enei Villagra (*) Alternate Directors José Robles Becerra (*) José Antonio Alvarez (*) Marco Orellana Silva (*) Hernán Sepúlveda Astorga (*)

Codelco’s Interest and Changes during 2011 Codelco 100%

Inversiones Mineras Acrux SpA is an investment vehicle to house the assets acquired, through Codelco exerci-sing its right to buy a 49% Interest in Anglo American Sur S.A., on behalf of Codelco.

In October 2011, Inversiones Mineras Acrux SpA signed with Codelco a loan agreement for up to US$ 6.75 billion with Mitsui & Co., Ltda., if paid, will be remitted to Codelco so that it can exercise its option to buy a 49% Interest in Anglo American Sur S.A. Furthermore, Codelco guarantees the payments to be made by Inver-siones Mineras Acrux SpA under this bridge loan, until it is extinguished.

In October 2011, Codelco signed with Inversiones Mine-ras Acrux SpA, a transaction agreement with Mitsui & Co., Ltda., whereby Codelco guarantees the payments and actions that must be undertaken by Inversiones Mineras Acrux SpA under this agreement.

INVERSIONES TOCOPILLA 2B S.A.

Incorporation: 20 November 2009

Notary’s Office: Iván Torrealba Acevedo, registered on page 51,502, no. 43,055 in the Santiago Registry of Commerce, 2009.

Corporate Purpose

Its purpose is to buy and sell any securities held as shares, and rights in other companies whose business activity is in electricity in any of its forms, especially in the electricity sector and investments in companies that develop such business activities; manage such investments and receive returns; and participate in any other business or activity directly or indirectly related, associated and/or complementary to the corporate business.

Directors

María de los Ángeles Pérez (*) Víctor Janer Pérez (*)

Eduardo Foix Iñíguez (*) General Manager Victor Janer Pérez (*)

Codelco directly holds a 99.99% interest and there were no changes during the period under review.

2010: US$ 388,362,000

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ECOSEA FARMING S.A.

Legal Status RUT: 76.024.442.2

Incorporation: Series No. 8881. Partners: Incuba S.A.: 47.4% ICA: 20.8%

Universidad de Concepción: 17.7% Universidad de Valparaíso: 6% Fundación Chile: 6%

Sitecna: 2.1%

Notary’s Office: Nancy de la Fuente. Deed series where articles of association are amended: 11,018.

Started activities: 17 July 2008. Corporate Purpose

Its purpose is to transfer, adapt, research, investigate and develop farming technologies and auxiliary servi-ces, based on copper and copper alloys for aquaculture and other related areas; produce and market any kind of product and/or services resulting from the above activities; perform any action and enter into contracts and agreements that directly and indirectly lead to achieving its goal.

Directors

Victor Pérez V., Chairman (*) Alan Farcas

Eduardo Foix Iñíguez (*) Miguel Riquelme A. Luis Pichott Gabriel Yany Marcelo Molina Alternate Directors Carmen Tardito S. (*) Jurgen Leibbrandt vN. (*) Vacant General Manager Rodrigo Sánchez

Codelco’s Interest and Changes during 2011 Codelco Chile has indirect ownership in EcoSea Far-ming S.A., through its subsidiary Innovaciones en Cobre S.A., with a 47.4% interest.

INVERSIONES GACRUX SpA

Incorporation: 5 October 2011

Trade Name: Inversiones Gacrux SpA Sociedad por Acciones.

Partners: Inversiones Mineras Acrux SpA: 100%. Corporate Purpose

Make investments in shares, ownership interest, fund quotas and securities in general, that are directly or indirectly related to mining activities or business or are issued by mining companies.

Board of Directors

Francisca Castro Fones (*) Patricio Enei Villagra (*)

INVERSIONES MINERAS BECRUX

LIMITADA

Legal Status RUT: 76.173.783-k

Incorporation: 6 October 2011

Trade Name: Inversiones Mineras Becrux Limitada Limited Liability Company

Partners: Inversiones Mineras Acrux SpA: 95% Inversio-nes Gacrux SpA: 5%

Corporate Purpose

Make investments in shares, ownership interest, fund quotas and securities in general, that are directly or indirectly related to mining activities or business or are issued by mining companies.

Board of Directors

Francisca Castro Fones (*) Patricio Enei Villagra (*)

Inversiones Mineras Acrux SpA: 95% Inversiones Gacrux SpA: 5%

Inversiones Mineras Becrux is an investment vehicle to house the assets acquired, through Codelco exercising its right to buy a 49% Interest in Anglo American Sur S.A., on behalf of Codelco.

In October 2011, Codelco signed with Inversiones Mine-ras Acrux SpA, a transaction agreement with Mitsui & Co., Ltda., whereby Codelco guarantees the payments and actions that must be undertaken by Inversiones Mineras Becrux Limitada, a subsidiary of Inversiones Mineras Acrux SpA.

Codelco’s Interest and Changes during 2011 Inversiones Mineras Acrux SpA: 100% Business Relations with Codelco

Inversiones Gacrux SpA is an investment vehicle to house the assets acquired, through Codelco exercising its right to buy a 49% Interest in Anglo American Sur S.A., on behalf of Codelco.

In October 2011, Codelco signed with Inversiones Mine-ras Acrux SpA, a transaction agreement with Mitsui & Co., Ltda., whereby Codelco guarantees the payments and actions that must be undertaken by Inversiones Mineras Gacrux SpA a subsidiary of Inversiones Mine-ras Acrux SpA.

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COMPLEJO PORTUARIO MEJILLONES S.A.

Incorporation: 18 March 1997.

Partners: Codelco 99.99% Codelco Services (UK): 0.01% Notary’s Office: Hugo Leonardo Pérez Pousa

Registered in the Santiago Registry of Commerce on page 7,188 No. 5.679.

Corporate Purpose

The purpose of the company is to project, build and operate a port in the Mejillones bay, 2nd Region of Antofagasta. CPM developed the project and awarded the construction and operation of Terminal 1 through a 30-year concession contract to Compañía Portuaria Mejillones S.A., a private consortium originally formed

COMOTECH S.A.

Incorporation: Series No. 12.688-07.

Partners: Incuba S.A.: 33.3% Molymet S.A.: 33.3% Uni-versidad de Chile: 33.3% Notary’s Office: Iván Torrealba A.

Started activities: 7 February 2008. Associated com-pany of Innovaciones en Cobre S.A. (a Codelco subsi-diary).

Corporate Purpose

Research and development to increase molybdenum demand through new and enhanced applications, uses and/or markets, for which the company may, in general, implement any kind of act and enter into any contract, which includes forming and taking part in other compa-nies or entities, directly or indirectly related to achie-ving the corporate purposes or with management, investment, provision of corporate assets.

Directors

Victor Pérez Vallejos, Chairman (*) Fernando Alliende C. Jorge Allende R. Alternate Directors Carmen Tardito (*) General Manager David Villaseca

Codelco has indirect interest in the company, through its subsidiary Innovaciones en Cobre S.A., with 33.3%. The remaining partners’ interest is as follows:

> Universidad de Chile: 33.3%. > Molymet: 33.3%.

CoMoTech S.A does not have any business relations with Codelco.

CoMoTech S.A does not any contracts with Codelco. *Codelco directors or executive directors.

C4E S.A.

Legal Status

Incorporation: 22 September 2010 RUT: 76.133.034-9

Trade Name: Copper for Energy Sociedad Anónima Closely held Company

Partners: Inversiones Copperfield Ltda. 25%, Interna-tional Copper Association Ltda. 25%, Fundación Chile 25% and Universidad de Chile 25%.

Corporate Purpose

Develop the project “Business Consortium to develop and market new copper products and applications in order to use energy more efficiently and/or to generate and use renewable energy, which are copper intensive and meet the current needs of the market.”

Board of Directors

Miguel Riquelme, Chairman Jürgen Leibbrandt Von Neefe (*) Daniel De la Vega

Marcelo Angulo Francisco Brieva Alternate Directors Francis Kane

Víctor Perez Vallejos (*) Hal Stillman

Andres Pesce Javier Ruiz de Solar

Codelco’s Interest and Changes during 2011 Inversiones Copperfield Ltda.25%, International Cop-per Association Ltda. 25%, Fundación Chile 25% and Universidad de Chile 25%.

Copper for Energy does not have any business relations with Codelco.

*Codelco directors or executive directors. The remaining partners’ interest is as follows:

> International Copper Association: 20.8%. > Sitecna: 2%.

> Universidad de Concepción: 1.7%.

> Pontificia Universidad Católica de Valparaíso: 6%. > Fundación Chile: 6%.

EcoSea Farming S.A. no does not have business rela-tions with Codelco.

EcoSea Farming S.A. does not have any contracts with Codelco.