A longwall cutter loader of the plow type, with two cutting blades, one at each end, operated by a hydraulic cylinder, which can give a powerful thrust (about 42 st or 38 t) to the blades and cause them to bite into the coal. While this thrust is being exerted, the 2751 machine is anchored by means of a vertical jack that engages the roof and floor. The jack is built on sliding bars, and the machine is moved by sliding the jack along the bars to the next position for anchoring the machine. It travels alongside the conveyor but is not connected to it. A loading ramp guides the cut coal onto the conveyor. The machine is employed in seams from 4 to 5 ft (1.2 to 1.5 m) thick with a strong roof and floor.