Heather Rousseau/Aspen Daily News A miner brings down a longwall unit in an area were the mining is finished.
Heather Rousseau/Aspen Daily News
A miner brings down a longwall unit in an area were the mining is finished.
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Heather Rousseau/Aspen Daily News A miner brings down a longwall unit in an area were the mining is finished.
Heather Rousseau/Aspen Daily News
A miner brings down a longwall unit in an area were the mining is finished.
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