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Inventories
 3 Months Ended
Jan. 31, 2012
Inventories [Abstract]  
Inventories

Note 5. Inventories

The components of inventory at January 31, 2012 and October 31, 2011 consisted of the following:

 

                 
    January 31,
2012		     October 31,
2011		  

Raw materials

   $ 20,610     $ 18,303  

Work-in-process (1)

     25,694       21,798  
   

 

 

    

 

 

  

Net Inventory

   $ 46,304     $ 40,101  
   

 

 

    

 

 

  

 

(1) Included in Work-in-process as of January 31, 2012 are power plants which are substantially complete and ready to be deployed upon receipt of customer orders. The total value of inventory for these substantially complete power plants as of January 31, 2012 is approximately $7.2 million. There were no substantially complete power plants as of October 31, 2011.

Raw materials consist mainly of various nickel powders and steels, various other components used in producing cell stacks and purchased components for balance of plant. Work-in-process inventory is comprised of material, labor, and overhead costs incurred to build fuel cell stacks, which are subcomponents of a power plant. Work in process also includes costs related to power plants in inventory which have not yet been dedicated to a particular commercial customer contract.

Raw materials and work in process are net of valuation reserves of approximately $3.0 million and $2.6 million at January 31, 2012 and October 31, 2011, respectively.