The development of anode jacking systems by UK manufacturer Power Jacks Ltd. is discussed. The company has supplied numerous jacking systems to smelters around the world including the UK, US, New Zealand, South Africa and most notably Dubai where five of the pot-lines utilize Power Jacks products on the reduction cells. The anode jacking system offer high positional accuracy, speed variation and continuous duty cycles enabling the anode to be adjusted in conjunction with the alumina feed to allow consistent optimum production. The company also offers retrofit or repair of all existing screw jacks in the field.