1. By Joe Mihelcic, Geophysicist ClearView Geophysics Inc. Ontario Exploration & Geoscience Symposium “New Ideas, Revisiting Past Discoveries” December 7, 2010

2.  Any induced polarization survey that utilizes boreholes to:  Inject current or  Measure potentials

3.  Most common scenario is that favourable mineralization intersected in at least one borehole:  Test if target is chargeable  Quantify in or around borehole  Determine Orientation/Direction/Extents  Prioritize available geophysics and drilling data

4.  Many configurations and methods available:  Mise-a-la-masse  In-hole Pole-dipole and dipole-dipole  Hole-to-hole  Gradient  Etc. etc.

5.  Keep it simple  Configure using basic physics  Include external data  Consider cost/risk vs. benefit/reward  E.g., tomographic mode for mineral exploration?

6.  Favourable mineralization detected in a number of boreholes spread over wide area  Favoured theory suggests overall mineralizatoin plunges towards the northwest  Attempt BHIP to test this theory from borehole with good intersection  158.2 m -193.6 m

7.  Run a simple dipole-dipole detection log to determine if intersected zone is chargeable:

8.  Charge the target zone with Current Electrodes above and below the zone:  C1 = 162 m (VG at 176 m)  C2 = 225 m  Read potentials on surface  Ensure lines at 90 degrees to BH direction  Tie-in to surface BH’s (bush crash)

9.  Axis ‘A’ identified along chargeability trend

11.  Compare to available geophysics data

14.  Focused post-processing of previously acquired surface pole-dipole geophysics data  Inversion modeling  Overlay drilling locations in 3D

16. - Not available on website download due to size - Available upon request

17.  Which boreholes drilled through zone?  Re-examine logs to find anomaly source  Recommend tighter drilling along source axis if favourable intersections already encountered

18.  BHIP requires more customization than standard surface arrays  Inversion modeling useful in some cases, at end of process, especially for 3D visualization  A method to further prioritize surface IP results