http://www.mattea.com/

Artist: Kathy Mattea (Artist), Title: Coal (CD), Record Label: Captain Potato, Category: Music,

This method is being used to "harvest" coal...mountain top removal
see this site...http://www.mountainroadshow.com/ (may be music here)

http://en.wikipedia.org/wiki/Music_of_Coal
Music of Coal: Mining Songs from the Appalachian Coalfields is a 70 page book and two CD compilation of old and new music from southern Appalachian coalfields.

http://cjtm.icaap.org/content/12/v12art4.html
a Collection of Coal-Mining Songs in Canada

There has been a musical theater production written and performed.
http://florida.broadwayworld.com/article/Coal_Miner_Musical_Fire_on_the_Mountain_20061111
http://www.theatreinchicago.com/news.php?articleID=228

http://folkmusic.about.com/b/2008/04/11/another-great-cd-of-coal-mining-songs.htm

the Unbroken Circle by Tim Breiding

here are Australian coal mining songs
http://unionsong.com/reviews/miners/