Group total » pump control on all pumps to ensure pumping occurs at off peak times; » variable speed drives on all conveyors that regulate the speed depending on the load; » control of lighting, with reduction of intensity if there’s no activity in the area; » soft starter on all motors of 90 kW and above to reduce start-up currents and thus reduce maximum demand; » correct sizing of electrical motors ensuring that they operate in the high efficiency band; and » continual focus to repair and reduce compress air leaks underground resulting in effective running of the compressors at the various operations and thus reducing energy usage.