I would say that over 90% or 95% of what we do in Devon is related to environmental aspects of oil sands, whether it's to find new technologies that have less energy demand, fewer emissions, and so on.
You asked whether these have been implemented or not and when they are going to be implemented. They are already at different stages of implementation. We have one or two new technologies that are being implemented for tailings. In one stage of extraction we are using solvents to process the oil, so we have already achieved a paradigm shift, a quantum change, in how to process the oil sands. We do most of this work with the stakeholders as part of our activities. This allows the quick transfer of technology to the user of the technology.
On the 24th of this month there will a Shell day on the Hill here. One of the technologies we developed for them allows Shell to have their plan. They invested $6.7 billion on the first phase and about $10 billion on the second phase based on that. It is much better for the footprint, emissions, and cleanliness of the oil. They admit that without this technology they would not have been able to progress.