Subsurface voids pose an engineering and safety risk. Voids can result from historic mine workings, Karst features, washouts and unintended settlement. THG has diverse and prolific experience using geophysical techniques to map potential voids.
- Electrical Imaging
- Microgravity
- Ground Penetrating Radar (GPR)
- Seismic Reflection
- Multichannel Analysis of Surface Waves (MASW)
We provide on-call and emergency services to meet your project needs.