Intro

Induction and Basic Orientation in Occupational Health and Safety for Mining Operations Course Introductory e-book

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Our Company Antamina is a polymetallic mining complex that produces copper, zinc and molybdenum concentrates, and silver and lead concentrates as by products.

The mine is located in the district of San Marcos, Ancash Region, 200 km. from the city of Huaraz at an average altitude of 4,300 meters above sea level. The company has its own port, called Punta Lobitos located in the coastal province of Huarmey.

Investment in Antamina (an initial investment of approximately U.S. $ 2.3 billion, plus U.S. $ 1.2 billion of investment in the expansion of its operations) is considered the highest in the history of Peruvian mining. Today it is among the largest Peruvian producers of copper and zinc concentrates and one of the ten largest mines in the world in terms of operating volume.

Compania Minera Antamina SA is a company incorporated under Peruvian law, the product of a joint venture between four leading companies in the world mining industry.

Antamina's shareholders are: • BHP Billiton (33.75%) • Xstrata (33.75%) • Teck (22.5%) • Mitsubishi Corporation (10%) Antamina has four areas of operations: The Mine The mine is located in the Antamina Ravine, in the district of San Marcos, at latitude 9 º 32’S and longitude 77 ° 03’W and has a current estimated useful life until 2029.

This is an open pit operation that works with a skarn type deposit.

A daily average of 430,000 tons of material is extracted and with operating running 24 hours a day, 365 days a year, 12-hour shifts, making it one of the ten largest mining operations in terms of volume. The mine pit currently measured 3.400 meters long and 1.800 meters wide and has a depth of 700 meters. The total proven and probable reserves amount to 745 million metric tons.

Camp Yanacancha Located at this camp is the Concentrator

Plant, which may be considered one of the most automated existing plants in the world, equipped with a technology that can directly process the ore that is extracted from the pit. The camp also has modern and comfortable lodging accommodations for all personnel.

Punta Lobitos Port The port is located in Huarmey, 290 kilometers north of Lima. This facility receives the ore concentrates that are transported from the mine through a modern steel ore pipeline, coated with HDPE, over a distance of 302 kilometers.

The concentrates, which come in the form of a slurry pulp –containing 65% solids, are received, filtered, stored and loaded onto ships for export. The surplus water from this ore concentrate is treated and then used in the afforestation of a 170 hectare wooded forest. The port has ISO 14001 and ISO 9001 Certification.

Tailings Dam Located in the Huincush Ravine at 4,075 meters above sea level, this tailings dam is believed to be the highest in the world. Its huge size, owing to its storage capacity of up to 550 million tons of tailings, and structural leak-proof design, ensure strict environmental care.

Charter "We are Antamina, efficient operators of polymetallic ore deposit. Our team is strongly committed to producing and delivering high quality concentrates, safely and responsibly, from the Peruvian Andes to the rest of world. We identify with our company’s values as our very own and we are highly motivated to always be better.

Our purpose is to responsibly create value and benefits for its shareholders, workers, its communities and Peru.

Our mission is to be a company that produces extraordinary results, is predictable for its quality, adaptability, profitability, safety, environment and community relations through the participation and leadership of our people"

Values Industrial Safety Is a constant part of all of our actions and decisions and the responsibility of each individual, proactively protecting people and property.

Integrity We are our word; we honor our commitments and comply with all laws and corporate policies.

Responsibility We are responsible for our actions and their consequences as well as the efficient management of resources. We operate with social and environmental responsibility fomenting sustainable development.

Respect and recognition We respect and recognize the individual achievements of each person, creating opportunities for personal and organizational development in Antamina where ideas and contributions are valued.

Continuous Learning We promote a culture of learning and continuous improvement, creating value

and opportunities for our team, customers and industry, optimizing the use of technology.

Excellent performance and innovation We promote excellence in everything we do, creating an environment where ideas and innovative methods emerge to improve our processes.

Strategic Results

Industrial Health & Safety We are recognized by the mining world as leaders in health and safety; our processes, the commitment of our people and our culture are used as models in other organizations.

Operational Excellence We have implemented the processes that enable us to consistently produce high quality concentrates, being innovative in integrating market needs with our operations. We operate with high productivity and zero losses.

Staff Development We have an organization working as a highly motivated team, recognized for its outstanding achievements in the development and satisfaction of its people.

Sustainable Development We have produced positive, sustainable, measurable and noticeable changes in the quality of life and level of trust and integration with the Ancash community, being nationally recognized as leaders in social responsibility.

Value Creation We have maximized the value of our operation and resources, optimized our processes and taken advantage of the opportunities, exceeding expectations in the return on investment for our shareholders.

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Antamina in history The Quechua word "anta" means copper giving rise to "Antamina” or copper mine.

The ancient Peruvians knew the properties of this mineral and extracted it just like other metals.

Around the year 1860, the Italian-Peruvian intellectual Antonio Raimondi travelled to the province of Huari and visited the Antamina mining site, documenting its properties in his masterpiece book "Peru."

The site was forgotten for decades, and it was not until 1952 that Antamina was added to the mining project portfolio of the Cerro de Pasco Mining Company.

The military government of Peru in power in 1970 took over the property. However, unstable political conditions the investment became unfeasible. Starting in 1973, Minero Peru administered the Antamina deposit and conducted joint studies with the Romanian firm GEOMIN that explored it for 15 years, totaling only 12 km of diamond drilling. Total reserves of 120 million metric tons were estimated for a plant that could process 25,000 metric tons per day.

In 1996, after a privatization process, the mine deposit was acquired by Canadian mining companies Rio Algom and Inmet, who, following an intensive exploration period of only 11 months, accumulated a total of 118 km of diamond drilling, this time calculating its reserves at 500 million tons. Then they increased treatment capacity to 70,000 metric tons per day.

The investors who won the tender bid formed Compañía Minera Antamina S.A. After a two year process of exploration and three years to build its mining complex, the company began trial operations on May 28, 2001. Five months later, on October 1st of that year, Antamina began commercial operations in the production of copper and zinc concentrates and other products.

The official inaugural ceremony was held on November 14th 2001, with the presence of then President Alejandro Toledo Manrique.

Antamina Milestones

MILESTONES

DATE

Antamina mine deposit privatized

July de 1996

Transfer Agreement with CENTROMIN signed Culmination of the exploration program in the Antamina deposit by Compañía Minera Antamina S.A. Development of Feasibility and Environmental Impact Studies

September de 1996 July 1997

March 1998

Incorporation of the Canadian companies Noranda and Teck as new shareholders in replacement of Inmet

July 1998

Project Development confirmed

September 1998

Construction on the Antamina project began

November 1998

Financing agreement for the Antamina project

June 1999

First disbursement from Mitsubishi, new shareholder

October 1999

Incorporation of Billiton Plc. as a shareholder of Antamina (following its acquisition of Río Algom)

October 2000

Completion of mechanical installation

May 2001

Merger between Billiton

June 2001 2

Plc. and BHP and formation of BHP Billiton, the largest mining company in the world, who then became Antamina’s new shareholder Merger of Teck with Cominco, forming the company Teck-Cominco Trial operations

July 2001

January 2010

Between May and September 2001

Antamina’s first shipment of concentrates: 16,000 MT of copper on the cargo ship Federal Agno

July 2001

Commercial Production

October 2001

Antamina satisfactorily finishes its Completion Test, releasing its shareholders from the guarantees that were imposed during financing

February 2004

Purchase of Falconbridge Ltd. by Noranda, which assumed the new name of Falconbridge Limited

June 2005

Acquisition Falconbridge Limited by Xstrata, with the later becoming a new shareholder of Antamina

August 2006

Start up of Operations of the new Pebble Crusher

April 2008

Teck-Cominco changed its name to Teck (Teck Resources Ltd.)

Compañía Minera Antamina S.A. announces its expansion project which will increase its production by 30% with an investment of US$1,200 MM

October 2008

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