Not sure its got anything to do with evaporation but more likely dilution from the rains heading to the sump ! based on the the last trains not producing after 18mths / new design also worth noting that 'fast track' construction costs money and when the $$$$ is in short supply so is the quality......
IMO based on experience !
SO4 Price at posting:
31.0¢ Sentiment: Sell Disclosure: Held