I'd just like to add to that, just to elaborate a bit on Mr. Seeley's response.
In Alberta, to get a permit application approval to have a surface mine in the oil sands, you have to submit a development and reclamation plan that describes the final land closure even before you're allowed to start mining. Those requirements are very much a part of the approval process, and they require the operator to return the land to a productive state greater than it had when we arrived. Therefore, you see things like the trees you probably witnessed yesterday that had been planted, the bison ranching that we're doing, and those kinds of things. They are done on a biomass basis that makes for a more productive landscape than was there before we arrived.