That is a good question. I can ask my colleague, Dr. Hamza, to answer that.
Basically, it's that the open-pit mining takes a very large area, and the effect on the land certainly is more significant. The amount of water used is more significant. Only 70% of the water is recycled, whereas with in situ, 90% is recycled. The emissions are less substantial. So the overall footprint is generally less.
That is not to say there aren't issues with the in situ situation, the in situ facilities. There are issues there. There is seismic work done, there are roads, and there are other issues we need to deal with. There's a different set of issues, but the sense is that it's less grand on the scale of what you would have to deal with.