Once the mineral concentrates are filtered in the Punta Lobitos filter plant, they are sent to storage through a hermetic conveyer belt system, retaining 8.5 to 9.0 percent of their humidity. They are then classified (zinc, copper with low bismuth, copper with high bismuth, etc.) and await their final destination. The Punta Lobitos storage facility can store up to 160,000 tons of concentrates. The facility has negative gravity keeping the concentrates from entering the environment and preventing any possible contamination.

The Punta Lobitos dock has very particular characteristics. Nearly 280 meters long, the dock quickly reaches a depth of 28 meters which allows ships with up to 50,000 tons of capacity to dock and load a few meters from shore.

To avoid any possible ocean contamination due to a concentrate spill or loss, Antamina designed its dock using a system of closed conveyer belts that travel above the structure, ensuring that the wind does not blow any minerals out to sea. The belts culminate in a telescopic ship loader that deposits the concentrates directly into the ship’s hold. Punta Lobitos is a mining port that meets the highest and most demanding safety and environmental control regulations, maintaining a perfect balance between mining activity and the environment.