I think Gordon can actually speak to that as well, but in fact there are a number of things.
The industry has been looking to cut back on the use of water. There are limitations to what you can do. Many companies, where they can, are using recycled water from the tailings area. There are problems with some of that because of the high salt content in some sensitive applications. Most companies also look to divert water away from the tailings area before it becomes contaminated.
So there has been a general reduction, say, over the last 10 or 15 years in the amount of water taken into an operation.