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Inventories
6 Months Ended
Jun. 30, 2014
Inventories  
Inventories

6. Inventories

        Inventories consisted of the following:

 
  June 30,
2014
  December 31,
2013
 
 
  (in millions)
 

Materials and supplies

  $ 3.0   $ 2.6  

Finished goods

    4.8     3.3  
           

Total

  $ 7.8   $ 5.9