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Inventories
3 Months Ended
Mar. 31, 2012
Inventories  
Inventories

6.  Inventories

 

Major classes of inventory are as follows:

 

 

 

March 31,

 

December 31,

 

March 31,

 

 

 

2012

 

2011

 

2011

 

 

 

 

 

 

 

 

 

Finished goods

 

$

1,061

 

$

891

 

$

932

 

Raw materials

 

126

 

123

 

114

 

Operating supplies

 

50

 

47

 

57

 

 

 

 

 

 

 

 

 

 

 

$

1,237

 

$

1,061

 

$

1,103