coord of Borehole MC-218 easting 497567.00 northing 6402797.00 elevation 545.67 Coord of source used for zero-offset VSP at McArthur River - BH MC-218 easting 497540.10 northing 6402799.35 elevation 545.17 (estimated from elevation of BH MC-218) coord for source used for Offset VSP at McArthur River - BH MC-218 easting 497295.70 northing 6402616.20 elevation 540.10