Re: Old mines didn't have this, thus that river problem.
Right on the old mines, wrong on the thus part.
"That river problem" was entirely the fault of the EPA. They promoted a stupid plan as safe. While the situation pre-breach wasn't ideal, it was far safer than their plan. In fact a retired geologist predicted the plan would fail in precisely the way it did and almost to the day that it happened. I'm not saying the EPA planned it that way, but I can easily forgive the tinfoil hat types who think it was.