I can start at a high level, and either Dr. Scott or Dr. Percival can provide a little more detail.
In southern Canada we have some experience with what every dollar spent by the Geological Survey of Canada leads to in real economic activity.
Most recently, the Prospectors and Developers Association of Canada had a consultant do a report to analyze the so-what question: you're doing this interesting science, but does it amount to anything? The rubric it developed for southern Canada is not perfect but it's the best estimate. Every dollar the GSC spends on geomapping geological survey information—there's a time lag, and it's not the next year, but it's within years after—results in $5 worth of exploration.
John used the analogy of the needle in the haystack. So with geological mapping, you've got the giant country of Canada, and these professional geologists, in the mapping process, create the haystacks at the appropriate, sufficient level. Without the haystacks, industry would find it very risky to go out and just try to prospect on its own. We identify the haystacks. That reduces the risk enough that the industry comes in and takes the risk economically to find the needle. Extrapolating that from the one to five to what that means in actual mining development—because that's just one to five on exploration—the rubric goes to $125. So every dollar spent leads to $125 worth of mining development. That one has a lot more variance in the estimate. You could take or leave that $125.
So we don't know. We're looking at southern Canada and the history there. We don't know if the one to five rubric on exploration will apply. One thing's for certain: there will be a greater lag factor, in my opinion, because there are no roads and there are no boats and planes that are readily accessible. These are vast areas, and it's difficult to get to these areas. It's very expensive, and once you get there, there's not the infrastructure. You can't stay at a hotel. You can't go from this exploration point down the road 100 kilometres in a car.