PT TIMAH Tbk engages in tin mining and smelting operations in Indonesia. The company operates through Tin Mining, Industry, Construction, Coal Mining, and Other segments. It offers Banka tin, Mentok tin, Banka low lead, and Kundur tin, as well as tin solder and chemical products; and non-tin products, such as coal, nickel, and quartz sand. The company is also involved in the provision of workshop, construction, shipping dockyard, real estate, health, transportation, engineering and ship repair, and marketing agency services, as well as in agriculture and trading activities. It also exports its products. The company was founded in 1976 and is headquartered in Bangka, Indonesia. PT TIMAH Tbk operates as a subsidiary of PT Mineral Industri Indonesia (Persero).