A material processing machine with a rotating element positioned within a hopper for receiving materials to be processed, the rotating element including an outer edge to which one or more attachments may be mounted. The attachments include a forward edge extending generally forward with respect to the direction of rotation of the rotating element and extending outward from the outer edge of the rotating element. A rotating element for use in a material processing machine has either attachments mounted to an outer edge or integrally formed extensions along an outer edge. The extensions or attachments including a forward edge that extends generally forward with respect to the direction of rotation of the rotating element.