The application of geophysics in South African coal mining and exploration

In areas where mining encroaches on a previously mined area, the historic mine plans do not always provide accurate information regarding the extent of historic and existing developments. Mining into old workings may result in hazards such as flooding of advancing workings. The development of infrastructure over old workings may also be undesirable, especially in areas that are susceptible to surface subsidence. There is therefore a need for a non-invasive technology that can accurately delineate old workings.