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Coal mining auger (Patent) | SciTech ConnectA coal-mining auger having (a) a hollow, tubular auger head with a spiral or helical coal conveyor mounted therein in concentric relation to the axis of rotation of ....know more

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Contour Highwall MiningWelcome to Contour Highwall Mining, LLC! Contour Highwall Mining, LLC (CHM) is a privately-held company headquartered in Summersville, West ia...know more

Patent US2948520 - Auger boring machine for mining coal ,AUGER BORING MACHINE FOR MINING COAL Filed Sept 7 , 1955 Compton June 19, 1956 Kirkpatrick July 24, 1956 FOREIGN PATENTS Great , Western Boring Equipment ,...know more

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