Uchucchacua’s mineral structures are hosted by Mesozoic limestone of the Jumasha Formation and are classified as a mesothermal polymetallic deposit of silver-lead-zinc with important contents of manganese. The main mineralized structures are veins and ore bodies with high-grade silver content.

Mining at Uchucchacua is conducted underground and utilizes cut-and-fill stopping, shrinkage stopping and sublevel stopping methods.

The metallurgical process at Uchucchacua consists of two circuits: Circuit 1 has a capacity of 2,800 T/D, and consists of primary crushing, milling, and ore flotation, obtaining lead-silver, zinc-silver, and pyrite concentrates; while Circuit 2 has a capacity of 1,200 T/D, and consists of primary crushing, milling, and ore flotation, obtaining lead-silver, zinc-silver, and pyrite concentrates. The pyrite concentrates from both circuits are sent to the cyanidation plant, which has a capacity of 300 T/D. The cyanidation process is performed in tanks and thickeners. The solution obtained is treated using the Merrill-Crowe process, and the precipitate obtained is dried and smelted to finally obtain high-purity silver bars. The concentrates with a high manganese content produced at Uchucchacua are treated at the Río Seco leaching plant, for subsequent sale.