A cover device for a shredding plant, able to cover at least a shredder unit which includes a rotary drum rotatable around its own axis of rotation within a shredding chamber. Previous automated systems to monitor the neurologic state of a patient undergoing general anesthesia involve a significant time delay between the patient’s true hypnotic state and the computed indices. The swinging center of the first joystick is located inside a region specified by a portion where fingers are arranged in a side view of the housing when a user holds the housing, and by a distal end of the first joystick protruding toward the front face. Another absorptive filter circuit is located on the RF generator-side of the absorptive filter network to present a stable voltage waveform to the plasma. The outer housing is arranged to assume an exoatmospheric configuration upon reaching a target distance-from-launch, a target time-from-launch, a target altitude, or a target velocity.