 So, you've probably heard a lot of negative things about fracking, but in normal operation, if they're actually pumping water down, and it is water that they use to break up the rock to create this permeability, there isn't much contamination at all with the surface or the surface reservoirs. It is problematic, however, if where you're fracking is shallow. And so, when you do that, then the potential certainly exists to contaminate shallow water reservoirs and resources. And that's something that really, really concerns people, particularly in a country like Australia, where water is a rare and valuable resource, particularly in the inland areas away from the coast. So in that context, it is controversial, but it doesn't mean that it can't be done safely. It all depends really on how deep your target is. The deeper the target is, the odds of you contaminating shallow aquifers is diminished. But if you're actually operating shallow in a section, then it's dangerous. You can potentially contaminate the shallow aquifers. The other thing that makes fracking unlikely in a big way in Australia is just the fact that it is a thirsty business. You use lots and lots and lots of water to do the fracking. And honestly, in interior Australia, often that water just simply is not available. And so that just adds an expense to the whole operation that just really doesn't make it as viable as we know it is in places like North America and Europe and Asia where water isn't as scarce a resource as it is around here.