technologyComment of tin production (RoW): The technology used by the Ausmelt Furnace, for the smelting of tin concentrates, is based on the patent developed by the Commonwealth Scientific and Industrial Research Organization of Australia CSIRO. None technologyComment of tin production (PE): The technology used by the Ausmelt Furnace, for the smelting of tin concentrates, is based on the patent developed by the Commonwealth Scientific and Industrial Research Organization of Australia CSIRO. The slag is sent to San Rafael mine where is used for the paste- filling process, therefore the system does not include slag storage and treatment.