That's a great question.
The reason I'm not too worried about too much shipping is that it is still so expensive to get metals and minerals out of the Arctic. There aren't the discovered deposits. There aren't the projects that would indicate that we're going to see, for example, another Mary River iron mine or another Raglan Mine in the Canadian Arctic anytime soon.
The biggest constraint, again, is the price of the commodity and the cost of the infrastructure. Where we have real growth is in diamonds, gold and silver, because you can fly those out, and they don't require a lot of infrastructure. To get more copper or nickel, you would need to have a railroad or some kind of road. The only reason we have that great iron mine in Nunavut is that it's very close to tidewater, so you have a short way to get it to ships, and it usually goes east, not west to the Northwest Passage. The lack of infrastructure is a huge bottleneck to our producing those critical minerals in the Arctic.