B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
B22C5/0486—Movable devices for cutting or mixing material laying on the ground
B22C5/049—Movable devices for cutting or mixing material laying on the ground using rotating tools
B22C5/0495—Movable devices for cutting or mixing material laying on the ground using rotating tools combined with another operation, e.g. sieving, or with means for picking up material from the ground