In this case it is the individual mine. It's potential size and location. We need not worry about whether we are actually capable of protecting a valuable fishery if the mine is not there in first the place.

Trout Unlimited are a bunch of elitist a$$es. As soon as I saw their logo, I knew to be skeptical of this ^^^post.
It just happens to be the map I randomly selected to show a better picture of the watershed to contrast to Reed's map. I'm pretty sure Trout Unlimited (TU) did not draw a special map showing a fictitious river system just to support their cause. You can be skeptical of TU, but the post--it is just a map.