Underground mining equipment, namely, machines used in longwall mining, consisting of longwall shearers that are power-operated and travel back and forth across the face of the mine shearing coal and other material from the mine face; armored face conveyors to which the longwall shearers are attached and which transport coal and other mined material away from the face of the mine; electrohydraulic controls that control the movement of the hydraulic-powered roof supports used in longwall minin...

Custom manufacture of electric motors for machines

Electric motors for machines

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