The polymetallic mineralization at the San Vicente Property is present as vertically continuous fault hosted veins, replacements of brecciated faults, and mineralization in dacitic dikes. The mineralized structures are on the order of one to five metres wide, dip moderately to steeply, and trend generally towards the northwest.

The San Vicente Property contains a polymetallic deposit formed by hydrothermal systems associated with repeated calc-alkaline intrusions and their extrusive products forming vein type and disseminated polymetallic deposits. Mineralization in the district is known to cover an area of three by four kilometres to a depth of 300 metres. It consists of replacement veins filling preexisting faults, replacements in brecciated conglomerates in the San Vicente fault, and mineralization in dacitic dikes. Wide veins form in the west-northwest trending structures, with widths of between two and six metres, while veins present in the northwest structures are thinner and shorter. The widest and highest grade veins form in northeast trending faults.

Ore is mined using conventional shrinkage stoping and long hole mining with development waste used as backfill in the long hole stopes. Access to the mine for workers and equipment is provided by ramps and the Pelayo shaft while waste and ore material is brought to the surface using both haul trucks on the ramp and hoisting at the Pelayo shaft. Locomotives are used to move broken ore and waste on the levels in the conventional areas of the mine.

The San Vicente mine operates a process plant with a capacity of approximately 750 tonnes per year, using selective flotation technology to produce silver in silver-lead and zinc-silver concentrates. The mill flowsheet consists of one-stage crushing, a semi-autogenous grinding / ball mill grinding circuit, and selective flotation followed by filtration of concentrates.

The ore is transported from the mine using trucks to a stockpile with a capacity of 5,000 tonnes located next to the crushing plant. The ore is fed into a bin after passing through a static screen with 20 inch openings. Ore from the bin is fed to the crusher by an apron feeder that discharges onto a three inch aperture static screen. Screen oversize is fed to an 800 by 600 millimetre jaw crusher, and the crusher product is combined with the screen undersize and transported by two conveyors 24 inches wide by nine metres and 30 metres long respectively. The crushing circuit has capacity of 80 tonnes per hour wit ........