Serafino ....do you know this disruptive machineBuilt for the narrow veins . I think you have to follow the results very closely . ( torex gold )
https://www.google.com/url?sa=t&source=web&rct=j&url=https://torexgold.com/innovation/muckahi-mining-system/&ved=2ahUKEwjKtPjQrtXxAhULmBQKHcYkBXgQFjACegQIBhAC&usg=AOvVaw0NFYPxHBle08xwhHKqkFr0