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Inventories
12 Months Ended
Dec. 31, 2012
Inventories  
Inventories

5. Inventories

        Inventories, net, consisted of the following at December 31(in thousands):

 
  2012   2011  

Materials and supplies

  $ 76,989   $ 67,461  

Less: Obsolescence allowance

    (834 )   (643 )
           

Material and supplies, net

    76,155     66,818  

Coal inventory

    5,519     4,830  
           

Inventories, net

  $ 81,675   $ 71,648