Ann: Response to ASX Query, page-11

Heating a pond? Good idea, but I doubt it would be cost-effective. I don't know how big the ponds are but they would be very large in surface area for the evaporation to occur. Heating brine in the open air would be very energy intensive and expensive. Might be better to pass the brine through a solar thermal collector, like a pool heater, but then you have issues with corrosion and so on and extra expense for more infrastructure and pumping. I think the whole point of the way the operation was designed was to use passive solar and wind energy by leaving the brine in the ponds to evaporate under ambient conditions, keeping costs down.