Minsur stock: USD 22 million plan targets San Rafael tin recovery

Peruvian miner Minsur plans to invest USD 22 million in modifications at its San Rafael tin mine in Puno, according to Shanghai Metals Market. The report was published on October 28, 2026, and said Minsur had applied to Senace for certification.

Recovery without approved capacity growth

The plan would process about 651,567 tonnes of B3 tailings through existing facilities to recover residual tin. Minsur also intends to use material from the Larancota waste dump, where about 540,000 tonnes of an estimated 2.55 million tonnes are considered usable.

Ore sorting would send pre-concentrate to the San Rafael plant, while the resulting tailings would go to the B4 dump. The project is designed to extend resource use and improve tin recovery without raising the mine's approved processing capacity.

Safety and water measures included

The planned changes also cover mine safety and water management. Concrete production capacity would rise from 30 to 80 cubic metres per day for tunnel safety, while backup pumping power, a rain-flow bypass and the routing of B2 process water to a non-potable network are intended to support water recirculation and reduce fresh-water use.

Minsur plans 41 drillings, 136 soundings and 352 test pits as part of the broader programme. For investors, the proposal points to incremental recovery from existing resources rather than a conventional capacity expansion, while the final scope remains subject to the certification process.

Minsur operates a Peruvian mining business

Minsur is a Peruvian mining company with the San Rafael operation focused on tin production. The mine is located in the Puno region, and the reported project combines mineral recovery with safety, water-management and exploration work. The available company profile does not provide enough detail to establish a reliable peer comparison.

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