Terrascan has just added a Full Waveform Sonic (FWS) tool to its arsenal. It is used extensively in groundwater and geotechnical projects to calculate compressional 'P' and shear 'S' wave velocities in open boreholes. The FWS tool is instrumental in determining the rock strength variation down a borehole. In addition, we have also upgraded our winch to 950m, greatly extending the capability of our 4x4 logging unit and televiewers. It sends a high energy source wave through th