The Last Mountain (2011)
The Last Mountain is a feature-length documentary film directed by Bill Haney and produced by Haney, Clara Bingham and Eric Grunebaum. The film premiered at the 2011 Sundance Film Festival and went into general release on June 3, 2011. The film explores the consequences of mining and burning coal, with a particular focus on the use of a method for coal strip-mining in Appalachia commonly known as mountaintop removal mining.
More at Wikipedia.