 Tawabu Mineral Resource TMR is a coal mining company, operated in East Kalimantan, which is a half Indonesias coal reserves located in this province.TMR was established in 0000, yet was started to operate in 0000 and first shipment in 0000. Blackgold Indonesiafocused Coal Mining Company BlackGold Group is an Indonesia-focused coal mining company targeting Indonesias rapidly-growing power plant industry, with a specific focus on supplying coal to power plants located in Riau province, Sumatra, Indonesia. 