That's exactly right. In the last few years there has been a real transformation in North America in going to the shale gases versus conventional gases. That's determined from what we call the finding and development cost, which is the cost per unit of production. With the conventional assets, which are dwindling, as you mentioned, it's typically twice as expensive from a finding and development cost than what we've shown in the shale gas assets in the last number of years. So they're very competitive, sir.
