A worker of state-coal miner PT Bukit Asam shows a coal rock at the open pit mine in Tanjung Enim in South Sumatra province August 23, 2011. REUTERS/Dwi Oblo/Files

Reuters
A worker of state-coal miner PT Bukit Asam shows a coal rock at the open pit mine in Tanjung Enim in South Sumatra province August 23, 2011. REUTERS/Dwi Oblo/Files
A worker of state-coal miner PT Bukit Asam shows a coal rock at the open pit mine in Tanjung Enim in South Sumatra province August 23, 2011. REUTERS/Dwi Oblo/Files
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