PT Aneka Tambang Tbk operates as a diversified mining and metals company in Indonesia. The company operates through three segments: Nickel, Precious Metals and Refinery, and Bauxite and Alumina. It is involved in the exploration, excavation, processing, and marketing of alumina, nickel ore, ferronickel, gold, silver, bauxite, and coal.

The company also engages in the construction, trading, industry, agriculture, printing, and ground transportation businesses; and provision of industrial area management services. It also exports its products. The company was incorporated in 1968 and is headquartered in Jakarta, Indonesia.

PT Aneka Tambang Tbk is a subsidiary of PT Indonesia Asahan Aluminium (Persero).