"According to 21 scientific studies there has been major effects on the population in the Appalachia where MTM takes place including over 50% higher cancer rates, 42% higher birth defect rates, and $75 billion a year in public health costs from pollution."
http://en.wikipedia.org/wiki/Mountaintop_removal_mining
"According to 21 scientific studies there has been major effects on the population in the Appalachia where MTM takes place including over 50% higher cancer rates, 42% higher birth defect rates, and $75 billion a year in public health costs from pollution."