Ore is concentrated with cylonesand in flotation basins, and stored on site before pumping of slurry 300 km to the port of Huarmey
Waste rock is stored in a giant tailings pond. The dam will be the highest in the world and will be 250
meters high
The mineral deposit of Antamina is the largest known copper-zinc, silver, molybdenum and bismuth skarn in the world. In the year 2000, the deposit was calculated to contain 559 million tones of reserves with 1.23% Cu, 1.03% Zn, 13.7g/t Ag and 0.029% Mo