Paul Krugman explains strip mines and machinery "have allowed us to produce more coal with very few miners.” And so "The real war on coal, or at least on coal workers, took place a generation ago, waged not by liberal environmentalists but by the coal industry itself. And coal workers lost."
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"I think this tragic accident should be a wake up call to the nation that producing energy from coal is an archaic and dangerous thing to do in the 21st century when we have abundant safe, and clean sources of energy."