International Mining and Dredging South Africa (IMDSA) Pty Ltd. Sonic Drilling offers innovative solutions to the Geological, Environmental and Geotechnical Industries. Our Services Include, but are not limited to:- Sonic Drilling- SPT with Raymond Spoon- Geophysics - Geochemical Analysis and Reporting- Collar Survey- CPT - Drone Photogrammetry and Survey- Water and Soil Monitoring Wells- Field Mapping- Core Logging- Boreholes- Geotechnical Analysis- Slope Stability Monitoring- Sampling of Tailings Damps with Geotechnical Analysis.- Landfill Monitoring- Design of Exploration Drill Plan- Bulk Sampling