Here are three quick links, from 2007, 2015, and 1997, respectively: >http://www.scientificamerican.com/article/coal-ash-is-more-radioactive-than-nuclear-waste

Here are three quick links, from 2007, 2015, and 1997, respectively: >http://www.scientificamerican.com/article/coal-ash-is-more-radioactive-than-nuclear-waste/ http://www.scientificamerican.com/article/coal-ash-is-more-r... >https://nicholas.duke.edu/news/radioactive-contaminants-found-coal-ash https://nicholas.duke.edu/news/radioactive-contaminants-foun... >http://pubs.usgs.gov/fs/1997/fs163-97/FS-163-97.html http://pubs.usgs.gov/fs/1997/fs163-97/FS-163-97.html