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          - GPR         can give you real time results with a direct read out of x-y locations.         X-rays must be processed and then calculated.
 
          - Access         to one side is needed for GPR while x-ray requires access to both         sides. 
 
          - A         GPR survey can be performed at any time without disrupting any other         operations and during normal working hours unlike x-rays
 
          - GPR         is a safe non-destructive survey that has no radiation hazzards.
 
          - There         is a lower cost associated with GPR due to set up time, no overtime         unless requested, and the amount of scanning that can be performed in         one day..
 
        - Thousands         of square feet can be scanned in one day whereas X-rays are performed in         a step and repeat method limiting the number that can be performed in         one day.
 
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