http://www.cleanenergy.org/2011/01/24/dirty-fuels-fact-sheet/

SACE | Southern Alliance for Clean Energy

Dirty Fuels Fact Sheet

parts/content-body.any.php

Scraping the bottom of the barrel for America’s dirtiest fuels. These dirty fuels are risky investments that create more global warming pollution, put our communities at risk and will do nothing to lessen our dependence on fossil fuels. SACEdirtyfuels.pdf