On making the steam, as Mr. Brown said, you can make it from a number of sources. One of them is trying to take the waste from the process, gasify it, and make it into a source of energy to transform the water into steam. Our sister organization in Ottawa is doing a lot of work on the gasification of different materials, including waste materials.
But there is another way, and that is to use chemicals in a state of steam. You can use low temperature, and you add different solvents to the material you put underground, and this will help. But this only applies in situ, to the deep deposits. For the surface deposits, you add water and some heat. The heat is not very high. It's only about 40 degrees, as you don't need to turn it into steam for the surface. For underground and in situ, though, you need to have a driving force, and that driving force would be steam or solvent. There are a number of projects in Saskatchewan in which they are actually using solvents to drive heavy oil, which is very similar to bitumen.