The technologies mostly focus on surface mining and on improving water issues there. As far as in situ goes, the improvements with respect to water use are, for example, solvent-assisted steam injection, where you lower the temperature of the steam you need and hence the amount of water. Others are looking at different in situ methods that do not use water, such as toe-to-heel air injection. So they're looking at different methods.
Now, as for the ones that actually do use water, the improvements there would be in improving the water treatment they use to recover more water so they're not disposing of as much water in their deep-well injections, the waste water from the water treatment processes.