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Inventories, net
9 Months Ended
Sep. 30, 2011
Inventories, net 
Inventories, net

6. Inventories, net

        Inventories consisted of the following:

 
  September 30,
2011
  December 31,
2010
 
 
  (in millions)
 

Materials and supplies

  $ 18.7   $ 15.2  

Finished goods

    2.7     12.4  
           

Total

  $ 21.4   $ 27.6