PT Aneka Tambang Tbk engages in the exploration, exploitation, processing, refining, and marketing of minerals, precious metals, and coal. It operates through the following segments: Nickel, Precious Metals and Refinery, Bauxite and Alumina, and Head Office. The Nickel segment consists of ferronickel, and high-grade and low-grade nickel ore. The Precious Metals and Refinery segment comprises of gold, silver mining, processing, refining and marketing as well precious metals refining services. The Bauxite and Alumina segment operates the bauxite mine in Tayan, West Kalimantan; and produces ANTAM coal in Sarolangun mine in Jambi. The Head Office segment records financial income and expenses, income tax expenses, and other earnings and expenses. The company was founded on July 5, 1968 and is headquartered in Jakarta, Indonesia.