Back in 2000, there were already the beginnings of some technology development in closed containment. What I think is remarkable, and it has happened in the last 11 years, is that we're actually now talking about recirculation systems, so that closed containment systems are not constantly drawing water from some source and basically putting it out the other end. There is a lot of water conservation going on, recirculation and better filtration systems.
We know that kind of technology has been developed over the last 10 to 11 years and we know or read of, as I'm sure you do as the committee, systems that are in place like that currently. I don't know if you've heard from those people, but I do know they exist.