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Inventories (Tables)
 6 Months Ended
Jun. 30, 2017
Inventories  
Major classes of inventory

 

 

 

 

 

 

 

 

 

 

 

 

 

 

June 30,

 

December 31,

 

June 30,

 

 

 

    

2017

    

2016

    

2016

   

 

Finished goods

 

$

879

 

$

827

 

$

892

 

 

Raw materials

 

 

130

 

 

118

 

 

121

 

 

Operating supplies

 

 

40

 

 

38

 

 

38

 

 

 

 

$

1,049

 

$

983

 

$

1,051