The Saucito project comprises a system of epithermal veins containing silver, gold, lead and zinc. The veins are polymetallic, containing gold, silver, lead, zinc and copper mineralization in sulfides.

Saucito is an underground mine with a shaft approximately of 1000m depth. There are three types of veins Wide (> 2.5 mts), Medium (1.5-2.5 mts) and Narrow (< 1.5 mts) in Saucito. Bench & FIll and Cut & Fill methods are used for mining operations.

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Saucito’s processing ficilities consist of Leaching plant, flotation plant( lead and zinc circuits) and Pyrites Plant.

The Pyrites plant is expected to improve overall recoveries of gold and silver, and therefore maximise production in the Fresnillo district; expected to total an average of 3.5 moz silver and 13 koz gold per year once both phases are operating at full capacity.

This project was divided into two phases, the first phase consisted of the iron flotation circuit and pyrites leaching plant at the Saucito mine, which was commissioned mid-2018.

The second phase, a flotation circuit, will treat the ongoing and historical tailings from the Fresnillo mine to produce a pyrites concentrate which will be sent to a filtration plant and then on to the leaching plant at Saucito, the final part of the process to produce the precipitates.