If the companies are operating, there is some guarantee that they still have cashflow that can be directed to the reclamation. My sense, and I'm not an expert on reclamation, is that we're moving away from an immediate and sudden handover—it's mine today and yours tomorrow—to a view that there might be some ongoing care. Perhaps we can do the reclamation better if we don't depend on handing it over completely. Rather, we depend on handing it over with some ongoing maintenance, let's call it. I like that idea. I'm not an engineer. I don't believe that engineers solve things perfectly. So I can imagine that there would be some additional costs.
We're not experts in bonding and things like that. Gravel extractors often have to post bonds. The industry, at the moment, as I understand it, doesn't post bonds.
It's an area of policy that I think people face, and I guess, as Dr. Dixon said, it's a matter of demonstrating these remediations before we can develop confidence that they can actually be carried out.