Yes, this is a very important point, I think, for the committee, given the nature of this bill, because what we are trying to suggest with the clean coal technology is a technology that deals not only with carbon dioxide, but with sulphur dioxide, with NOx, and with mercury. We're very concerned about mercury these days as well.
When you have a technology you're bringing forward—for instance, clean coal technology—the capture of all these pollutants, and then the permanent sequestration underground of those pollutants is something we see as a solution from an air emissions point of view, as opposed to merely a sulphur dioxide scrubber, which is just an add-on and is complicating your technology and adding to your costs.