I'll let Mr. Lunn deal with that, but I would say that I think the coal-fired power plants use water to produce steam and for cooling, rather a different application. Secondly, at all the mines that I'm familiar with, the root surface water around the mines, such as that which flows from the streams that would otherwise cross the mines, is diverted back into natural systems.
With that kind of overview, I'll let Mr. Lunn speak in more detail.