January 20, 2013
The shearer on the longwall chews through the face of the coal seam as coal falls onto a conveyor.
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More about longwall mining at Twentymile Mine in Routt
The longwall operation at Twentymile Coal Co. removes an average of 22,000 tons of coal from the mine each day. Sections of coal to be mined by the longwall are called panels.
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