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A couple of things I am wondering?
What happens if it catches fire? Is it a toxic waste site after?
How toxic is Lithium mining and production and is it possible on a huge scale?
Thermal runaway fires will eventually be solved now that Lithium batteries are used in Boeing and Airbus airplanes. In the meantime it would be reassuring if the batteries are not placed under the driver seat...
Cell phones were driving Lithium mining projects in Argentina a few years ago. Sounded like Argentina was poised to be the Saudi Arabia of lithium, which is 1000 times better than if Saudi Arabia was the Saudi Arabia of lithium. Spread the wealth my friends, and spread it to friends.