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Inventories (Tables)
6 Months Ended
Jun. 30, 2011
Inventories  
Schedule of inventories

 

 

 

June 30,

 

December 31,

 

 

 

2011

 

2010

 

Raw materials

 

$

598,699

 

$

589,859

 

Supplies

 

239,052

 

231,816

 

Work-in-progress

 

140,328

 

94,346

 

Finished goods

 

217,115

 

198,042

 

Total inventories

 

$

1,195,194

 

$

1,114,063