African Rainbow Minerals Limited is a mining company based in South Africa. ARM has interests in a wide range of mines, including platinum and platinum group metals, iron, coal, copper, and gold. ARM's Goedgevonden coalmine near Witbank is a flagship of their joint venture with Xstrata, and produces 6.7 million tons of coal per year. Production is expanding at the Two Rivers platinum mine in Mpumalanga. ARM owns 20% of Harmony Gold, the 12th largest gold mining company in the world with three mining operations in South Africa. Patrice Motsepe is the executive chairman; Phillip Tobias is CEO. Wikipedia