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PROPERTY AND EQUIPMENT
12 Months Ended
Apr. 30, 2014
PROPERTY AND EQUIPMENT [Text Block]
5.

PROPERTY AND EQUIPMENT

Property and equipment consists of the following:

       As of     As of   
      April 30, 2014     April 30, 2013  
  Process, lab and office equipment $ 456,335   $ 680,042  
  Site equipment   22,369     167,769  
  Total property and equipment   478,704     847,811  
  Less: accumulated depreciation   (237,265 )   (610,010 )
    $ 241,439   $ 237,801  

Depreciation expense was $99,895 and $103,995 for the years ended April 30, 2014 and 2013, respectively. At January 31, 2014, the Company removed $327,240 in process, lab and office equipment and $145,400 in site equipment that was fully depreciated and disposed of through retirement.