Stop Changing the Subject

We were talking about fresh water, Australian, and suddenly you start blathering on about the properties of salt water:

Could you actually be trying to say, "Fresh water will be used in the mine but only saline water is good for dust suppression and it will then have to be evaporated away ..."? Word order - have you heard of it (or, if you prefer, "have it you of heard"), you fatheads?