In 2001 there were 713 coal slurry impoundments in the US most of those in West Virginia, Virginia, and Kentucky. http://www.geotimes.org/dec01/NNcoal.html
Imagine how many of these slurries exist today. I often wonder if these toxic ponds can ever be reclaimed. Some slurry ponds are the same as valley fills and can hold a few billion [...]





