Colombian miner Cerro Matoso S.A. is located in Colombia's northern Córdoba department and produces ferronickel, iron alloys and nickel. Controlled by multinational resource group BHP Billiton, the mine has an estimated reserve life of 15 years. The operation also includes a ferronickel smelter and a refinery. In December 2013, the Colombian government extended the operating contract for Cerro Matoso through 2029, retroactive to September 30, 2012, when the previous contract expired. As a result of BHP Billiton's proposed demerger to form a new entity that will manage its base metal assets, Cerro Matoso was transferred to new subsidiary South32 Ltd.