The Americans are probably about eight or nine years ahead of Canada in using that technique to extract gas. In Canada, of course, we've certainly heard about it in different jurisdictions. It has been challenging, because this resource is underground in areas that have never had mining or extraction activities, so there has been a lot of unevenness. We need to catch up.
You can look to Alberta. There, the Energy Resources Conservation Board will tell you that this technique has been used for about six decades, and safely, without contaminating or any issues. That said, though, obviously there's a lot of public education to be done, and industry really has to get on that.