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Inventories
6 Months Ended
Jun. 30, 2011
Inventories  
Inventories

3. Inventories

Inventories consist of the following:

 

     June 30,
2011
     December 31,
2010
 

Finished products

    $ 248,601          $ 219,568     

Feedstock, additives and chemicals

     216,123           189,007     

Materials and supplies

     43,474           41,453     
  

 

 

    

 

 

 

Inventories, net

    $     508,198          $     450,028