Based on the reliable data I got, Berau Coal began producing coal commercially from Lati and Binungan mines in 1995 and Sambarata mine in 2001. In 2006, 2007, and 2008, Berau Coal produced 10.6 million tons, 11.8 million tons, and 13.1 million tons. Lati mine is the largest of Berau Coal's three active mines and accounted for approximately 58.4% of its production in 2008. Binungan mine has the second largest coal reserve among the three active mines, and Sambarata mine is the highest quality coal of all three mines in terms of calorific value. Between 1995 and 2008, Berau Coal produced 89.2 million tons of coal.
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