In Feb 16 story "Zinc concentrate shortages may be around long-term" please change 12th paragraph to read: "For instance, Roebuck said, the Lennard Shelf Mine in Australia was shut a few years ago when zinc prices were still historically low. Teck Cominco later bought the mine." instead of "For instance, Roebuck said, Teck Cominco shut its Lennard Shelf Mine in Australia a few years ago when zinc prices were still historically low." (Corrects chronology of when company bought mine)