There are two main drivers. One is the government coming down with new directives saying they must do this, that they must accomplish this amount of fines capture by this year to produce this kind of trafficable solid. That has happened with the Alberta government. Also, the companies are driven by themselves because they're running out of space to put all this stuff. So they have their own internal drivers to reduce the sheer size of these ponds, because they don't have anywhere else to put it.
So there's the economic driver of their own self-interest, and then there is the provincial directive that's saying they must meet certain requirements for, especially, the fluid fine tailings capture.