The Sandon mill is a nominal 100 -ton (90.7 metric tonne) facility. It is a standard crushing, grinding flotation system that produces a zinc and lead concentrate, as seen on the flowsheet diagram below. The mill has been in operation for numerous decades and has treated all the Silvana orebody since 1971. Initially the mill ran on diesel power but is now connected to the BC Hydro power grid.
In the past, concentrates were shipped by truck to the Teck Resources Limited’s Lead Zinc Smelter facility in Trail, British Columbia which is 1.5 hours from the mill. There is a licenced Tailings Management Facility that handles the waste from the mill. The mill is currently on care and maintenance until enough economic mineralization can be identified in and around the Silvana Mine.