Pumps (machines); engine driven water pumps; electric pumps; submersible electric pumps; submersible hydraulic pumps; slurry pumps; centrifugal pumps; motor powered liquid pumps; agitators; agitators being parts of machines; discharging hoppers; thickening and dewatering machines for use in the treatment of material in the minerals industry; apparatus for separating materials; hydrocyclones; cyclone separators; single and twin shaft mixers; dewatering apparatus; dewatering screens; dewatering slides; thickeners; centrifuges