The Antamina mine is located in the Andes mountains in northern Perú, approximately 300 kilometres north of Lima. With a milling rate of 70,000 tonnes per day, it is among the largest producers of copper and zinc concentrates in the world. Estimated to contain an in-pit resource of 530 million tonnes, Antamina is expected to have a mine life of at least 20 years.

Falconbridge has a 33.75% interest in the Antamina mine. Other partners are BHP Billiton (33.75%), Teck Cominco Corporation (22.5%) and Mitsubishi Corporation (10%).

Geology
The Antamina deposit is the largest known copper-zinc, silver, molybdenum and bismuth skarn in the world.

Detailed Geology
Location Map

Operations
Reserves are extracted by open pit mining followed by conventional grinding and flotation to produce concentrates. The concentrates are slurried and transported by a 300 kilometre pipeline to the Pacific coast, where they are de-watered for shipment by ocean vessel.

• 122,205 tonnes copper
• 64,157 tonnes zinc

• Proven: 251,000 million tonnes grading 1.26% copper, 1.04% zinc, 14.5% silver, 0.03% molybdenum
• Probable: 217,000 million tonnes grading 1.17% copper, 0.89% zinc, 13.2% silver, 0.03% molybdenum
  

• Measured: 28,000 million tonnes grading 0.51% copper, 0.21% zinc, 5.0% silver, 0.03% molybdenum
• Indicated: 30,000 million tonnes grading 0.47% copper, 0.27% zinc, 6.0% silver, 0.03% molybdenum
• Inferred: 27,000 million tonnes grading 0.79% copper, 1.00% zinc, 13.0% silver, 0.02% molybdenum

Employees
Antamina employs 1,400 people.

History
Construction at the Antamina mine was completed in 2001 at a cost of US$2.2 billion. Commercial production began in October 2001. For more information, please visit www.antamina.com.