Peak Coal: Will the US Run Out of Coal in 20 Years or 200 Years?

“Most U.S. coal is buried too deeply to be mined at a profit.”

http://www.greentechmedia.com/articles/read/Peak-Coal-Will-the-US-Run-Out-of-Coal-in-200-Years-Or-20-Years?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+GreentechMedia+%28Greentech+Media%29