In this Nov. 9, 2010 photo, a mine employee stands in the entry of the Signal Peak Energy's Bull Mountain mine in Roundup, Mont. Bull Mountain and other export mines in Wyoming and Mont

 

              In this Nov. 9, 2010 photo, a mine employee stands in the entry of the Signal Peak Energy
In this Nov. 9, 2010 photo, a mine employee stands in the entry of the Signal Peak Energy's Bull Mountain mine in Roundup, Mont. Bull Mountain and other export mines in Wyoming and Montana represent a bet that overseas sales could reverse the U.S. coal industry's downward spiral. (AP Photo/Janie Osborne)