The Simandou mountains are home to the world’s largest known untapped deposit of high-grade iron ore. (Image courtesy of Winning Consortium Simandou.Operations have begun at the Simandou, Africa’s largest greenfield integrated mine and infrastructure project. The Simandou mountains are home to the world’s largest known untapped deposit of high-grade iron ore.The President of the Republic of Guinea joined project partners WCS, Baowu, Chinalco and Rio Tinto (ASX: RIO) in a ceremony Thursday at the port in For ...