Support WBURMineral-Rich Mongolia Rapidly Becoming 'Mine-golia'Play07:29Download AudioFrank LangfittMay 21, 2012 ShareThe mine at Oyu Tolgoi, Turquoise Hill in Mongolian, will be one of the world's largest copper mines in about five years. An employee holds up a small sample of the oxidized copper that gave the mine its name. (NPR)
