| http://www.w3.org/ns/prov#value | - rs so that we take out the stuff that we don???t want to put out in the stack, including mercury and all kinds of sulfur components and nitrogen and warm up the globe -- global warming and all that stuff that comes very heavily with coal. So now it depends how much money you want to spend for clean air and clean water and all that stuff, and when you take that into account, then coal becomes more
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