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Electromagnetic Surveying (EM)

Preliminary measurements of ground conductivity at discrete locations, gives us the data we need to produce a 2-dimensional map across an area of interest. Whiteford Geoservices then takes this data and examines it to map the exact whereabouts of buried pipes, cables, foundations or obstructions. We can then advise on the preferred location of exploratory holes for main ground investigation works. Helps save time, save money


Electromagnetic surveying is particularly useful when used for the following purposes:

  • Mapping of soil thickness overlying bedrock
  • Identifying areas of filled ground and / or buried footings, concrete structures etc.
  • Mapping the extent of metallic and some types of non-metallic buried pipes and cables
  • Locating buried mine shaft, adits or sub surface voids
  • Mapping "Karst" features such as sink holes (soil or air filled cavities in limestone rock) or other pseudo-karst features 

The benefits of the method are that relatively large areas can be mapped quickly to provide cost-effective data that can be quickly interpreted by engineers and developers alike.


Cromac Conductivity Annotated Reduced