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I guess I wasn’t clear where on the surface the storage is. Do they still make a dam type area to store the ‘high’ water, or is it just a different part of the mine which is closer to the surface?
I was able to find some mine numbers… yeah; insane. Especially something like an open cut mine which is functionally already lake shaped.
I think the issue might be visibility.
Naively, it feels like most of the issue is from a small number of extra sooty vehicles. But that belief is probably just because of how visible it is. The brake/Tyree dust isn’t visible because it is more spread out.