Yes, I have similar thoughts, though I guess worst case it's roughly the same as mining coal but without the CO2 (and other unhealthy) emissions of burning it.

Yes, I have similar thoughts, though I guess worst case it's roughly the same as mining coal but without the CO2 (and other unhealthy) emissions of burning it. Downvoted? I was intending to express that even with mining the raw materials, etc. it is probably a net positive environmentally.