My understanding is that the Ekati diamond mine in the Northwest Territories has somewhere between $240 million and $280 million in posted security. That could be in a bond, a promissory note, or that kind of thing—but essentially it's a claim against the company. It's still under way.
Another thing I would like to clarify is that most modern reclamation and remediation regimes have built in this idea of progressive reclamation. As a company is winding down its operation through its life cycle, it undertakes the work as it goes, if you will, so that the final price tag associated with closing the mine after production has stopped is less than its full potential cost. It would be very different for proprietors to walk away from a project mid-production; you would have maybe a $300 million price tag. As they wind down their operations, they may only have $60 million left and they will do that as part of their corporate and social licence to do another project.