 A typical cycle includes sumping (launch-pushing forward) and shearing (raising and lowering the cutter-head boom to cut the entire height of the coal seam).As the coal recovery cycle continues, the cutter-head is progressively launched into the coal seam for 19.72 feet (6.01 m).Then, the Push-beam Transfer Mechanism (PTM) automatically inserts a 19.72-foot (6.01 m) long rectangular Push-beam (Screw-Conveyor Segment) into the center section of the machine between the Powerhead and the cutter-head.