In a structure of wiring connection, plate-like first to fourth wirings are typically used. A first coupling aperture passes through the vacuum divider and allows gas to pass from a first of the multiple vacuum chambers to the turbo-molecular pump. A knife for comminuting the feedstock can be moved transverse to the conveying direction across the entire cross section of the cutting chamber from one cross wall to the opposite cross wall. A report may be generated based on the monitoring results. A second region with respect to the second boundary may be identified.