That's what they call the “CT”, or composite tailings, process. They've been investigating it for several years now. There are problems with the quality of the recycled water. There are very high levels of calcium—because they're adding gypsum—that have caused problems in the extraction process.
The processes of tailings and extraction, the water extraction process, are intimately integrated. The issue has been whether to emphasize the extraction, the bread and butter, or the tailings problem. There has been a real challenge in dealing with tailings, because you also want to make sure that you have good quality recycled water to lower the water demands on the Athabasca River. It's a difficult problem, and a challenge for the water extraction process.