indowana bara تعدين الفحم ، pt. pt indowana bara mining coal PT Indowana Bara Mining Coal is a mining company with mining rights in East Kalimantan with resources nearing 3 billion tonnes over a 30,000 hectare concession The company supplies low rank coal to power plants in Indonesia, Vietnam and Korea, and is also developing its own 2x25 Mega Watt steam power plant in