Crushers; crushing apparatus; crushing machines; crushing rings; mills; grinding mills; milling tools (machines); milling tools (parts of machines); machine tools for milling; cutters for milling machines; mineral sizers (crushing machines); components for the foregoing including segments, roll screens, shells, rollers, feeder breakers, primary breakers, picks, intermediates, components for drums, shafts, lifters, shell lifters, stirring elements, grinding disks, classifiers.