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Areas where fault reactivation has taken place may need to be brought to the attention of engineering geologists, geotechnical engineers, conveyance solicitors, insurance companies, mining engineers and landfill operators. However, the absence of information on fault reactivation, in former and currently active coalfields, does not necessarily imply that reactivation has not occurred.

It would be prudent on all sites containing geological faults in active and former mining areas, to investigate their potential affects on ground stability, before development and construction is carried out. It is recommended that this be undertaken at the desk study and site investigation stage of a project to reduce the risks for unforeseen ground conditions.

It is recommended that recently active faults, and prominent lithological contacts (which are also susceptible to shear displacements during subsidence), be avoided for the siting of engineered structures, houses, landfill, waste sites, reservoirs, dams, roads, motorways, railways, tunnels and utilities. If alternative sites can not be found then site investigations are recommended to identify the associated potential hazards and to assess their risks, liabilities and consequences, or to determine any necessary ground treatment. This information may be required by geologists, engineers and planners so that the ground can be suitably treated, or appropriate foundations designed, prior to any construction.
The results from a desk study and site investigation may then enable suitable mitigation measures to be designed. The options available will depend on the geology and past mining but may include grouting, the emplacement of reinforced geotextile mattresses or the monitoring of ground movements if a reactive, rather than proactive approach is decided.

Index |  Diagnostic Characteristics | Geographic Occurrence | Investigation & Mitigation | Key Contacts & Expert Advice | Photo Gallery | Essential References & Further Reading