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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Note 4.    Property, Plant and Equipment.

The following is a summary of property, plant and equipment for the years ending December 31:

   
2011
  
2010
 
Estimated Useful Life
Vehicles
 $873,391  $872,993 
5 Years
Leasehold Improvements
  256,401   176,426 
13 – 15 Years
Office Furniture and Equipment
  324,979   266,788 
3 – 7 Years
Computers and Software
  1,109,671   861,765 
3 – 5 Years
Machinery and Equipment
  2,466,777   2,362,827 
3 – 20 Years
Plant Construction in Progress
  -   83,667  
Total Property, Plant and Equipment
 $5,031,219  $4,624,466  
Less: Accumulated Depreciation
  (2,585,611)  (2,077,318) 
Total Property, Plant and Equipment, Net
 $2,445,608  $2,547,148  

Depreciation expense was $556,409 and $481,894 for the years ended 2011 and 2010, of which $259,806 and $170,407 were included in cost of sales for 2011 and 2010, respectively.