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According to the Sierra Club, coal power plants are one of the nation's largest and dirtiest sources of energy, a leading cause of respiratory illness, and account for over 40 % of the nation's carbon dioxide emissions.
It argues that there are readily available alternatives to coal.
A 2009 report commissioned by the Sierra Club concluded that the costs associated with coal mining in Appalachia are five times greater than its economic benefits to the region.
The report concluded that residents of coal mining regions would be best served by transitioning away from economic dependence on coal.

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