Trevali Mining’s Santander zinc-lead-silver operations in Peru achieved commercial production in February. According to a company announcement, the Santander mill was operating consistently and without significant interruption at production rates exceeding 70% of design capacity and was producing concentrates that met saleable concentrate specifications. Mill throughput was being ramped up to nameplate capacity of 2,000 mt/d.
Trevali announced production guidance for Santander during 2014 at 42 million to 45 million lb of zinc, 15 million to 17 million lb of lead, and 700,000 to 720,000 oz of silver in zinc and lead-silver concentrates. Mill throughput for 2014 is estimated at 670,000 to 690,000 mt, with average head grades estimated at 4.0% to 4.2% zinc, 1.5% to 1.7% lead, and 1.4 oz/mt to 1.6 oz/mt silver.
The underground Santander mine is located about 200 km by road northwest of Lima. The project is being developed under an agreement between Trevali and Glencore International, whereby Trevali retains 100% ownership, while Glencore has built and is operating the processing plant to produce zinc and lead-silver concentrates. Glencore is also responsible for supervision of the contract mining operations and has entered into a long-term concentrate off-take agreement for 100% of Santander’s concentrate production.
With Santander now in commercial production, Trevali has shifted its development focus to its New Brunswick operations in Canada, where it is preparing the Caribou mine and mill complex for startup.