Well, they're definitely proving out the technology. For example, the TransAlta project is looking at one that's being developed by Alstom, a chilled ammonia process. There's no doubt that it's a leading-edge project in the world. We have also the situation at Weyburn, Saskatchewan, where the project is a bit more on the commercial scale.
In terms of CCS, we're making a lot of progress in understanding it, and I think this project will prove out a lot of the technology. But yes, you're right, it's a nascent technology.