Cerro Matoso Nickel Mine, Colombia Mining Technology
It is the world's secondlargest producer of ferronickel and boasts some of the lowest costs. Mining commenced in 1980 and nickel production started in 1982 under the Colombian Government, BHP Billiton and Hanna Mining ownership. BHP raised its ownership to 53% in 1989, to % in 1997, ten years later increasing its stake to the current %.