Reviving old coal mines | World Coal
For one minesite, the need was for 2 in. (5 cm) coal and, for two other nearby sites, the need was for 2.5 in. (6.3 cm) coal. "We were in need of a system that would size the coal consistently to spec and separate out the quality coal from the unusable rock and other material," said Sonnie Baird, Director of Coal Preparation for …
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