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Inventories, net
3 Months Ended
Mar. 31, 2012
Inventories, net  
Inventories, net

6. Inventories, net

        Inventories, net consisted of the following:

 
  March 31,
2012
  December 31,
2011
 
 
  (in millions)
 

Materials and supplies

  $ 15.7   $ 13.9  

Finished goods

    2.5     3.4  
           

Total

  $ 18.2   $ 17.3