Again, it really does depend on each project. Take, for example, Mary River, the one I mentioned earlier on Ellesmere Island. This is a massive project, a very rich deposit. It's probably the richest deposit in the world, both in terms of quality as well as quantity.
We're talking about this company investing in a new class of ships that are going to be able to break through the ice all year round and come into the inlet, and then in an efficient way being able to transport that bulk material to Europe, for example. You have some very interesting infrastructure. Building railroads on permafrost and keeping that kind of railroad going all year and trying to keep it from sinking, if you like, are the kinds of challenges there are. Every project has its unique characteristics. In this case it's going to be the private sector, for the most part, that invests in this kind of infrastructure.
Where we see a cluster of individual projects, where there's no business case for industry to be able to do that, that's where governments are going to have to start to look at it. We have examples of that, for example, in northern B.C., or what we're talking about in the Plan Nord or the Ring of Fire. Governments look at the benefits of investing that make an entire suite of projects economically viable as opposed simply to being geologically viable, because of the returns to us in revenues and royalties and taxes and so on.
As for trying to come up with a figure for the entire north, it's a bit premature. I think we have to look at it in a clustered way—and that's where we are. In fact, at the last energy and mines ministers' conference, there was agreement among ministers to start to look at the clusters around the country, at how we go from this geologic potential to economic potential. That's the kind of work we're doing.