The Mantoverde deposit has been defined as a Fe-Cu-Au type (IOCG), located in the Chilean Iron Belt, within the Atacama Fault System (AFS). Locally, it is located along the Mantoverde Fault (FMV) of general orientation N15°-20°W and dip varying from 40°E in the south to 65°E in the north.

Mineralization is hosted in Lower Cretaceous cataclastic andesitic and intrusive (dioritic porphyry) rocks, with three breccia units paralleling the NNW-striking, 40° to 50°E-dipping Mantoverde Fault, a 12 km long subsidiary structure between two N-S master faults of the Atacama Fault System. In the southern half of the Mantoverde Fault there is discontinuous copper mineralization in the form of tabular bodies dominated by specularite (Mantoverde and Laura), pipe breccias (Manto Monstruo and Manto Ruso) and irregular stockwork deposits (Montecristo).

Copper mineralization extends for 2.5 km in the EW, 600 m in NS and 800 m in depth. The deposit is oxidized down to 200 m depth. The breccias in the sloping fault block contain abundant haematite with brochantite, minor antlerite, chrysocolla, malachite and atacamite, occurring in veinlets, patches and disseminated in the specularite matrix.

Hypogene mineralization at depth occurs disseminated in the specularite matrix and consists of chalcopyrite and pyrite (chalcopyrite/pyrite = 5/1); same as Candelaria). Between the oxidized zone and the hypogene sulphide zone there is a thin sub-horizontal zone of weak superg ........

The mine plan was developed by Mantos Copper staff at the end of 2021. The plan is focused on two main areas, Celso–Manto Ruso and Mantoverde. The development case mill throughput assumption is based on hardness variability, resulting in an average throughput of 12.4 Mt per year of sulphide from 2023 to 2042, with a ramp-up period that assumes production of 3.2 Mt in 2022. The current mining operation strategy is to use a mixed owner and contractor loading and hauling fleet. The MVDP assumes integration with and transition from the current operation to higher productivity heavy mining equipment to increase the mine capacity. The heavy mining equipment is assumed to be fully owned by Mantoverde once the operation reaches steady-state production, planned to be by 2026. The mine is scheduled to work on a seven days a week, two 12 hour shift basis, for 365 days per year. The operation will include normal drilling, blasting, loading and hauling activities on a 15 m bench height (a double bench of 30 m) in the sulphide areas, and 10 m bench height (a final double bench of 20 m) in oxide zones. Mining will include supporting functions such as dewatering, grade control and equipment maintenance.

- subscription is required.

- subscription is required.

A plan to expand the existing Mantoverde desalination plant to 840 litres per second (“l/s”), utilization of existing water pipelines, and upgraded energy transmission capacity provides the infrastructure foundation to support our district growth opportunities. We are currently expanding the desalination capacity to 380 l/s to supply sufficient water requirements for MVDP with expected completion by year-end 2022.