The preliminary results of the Council for Geoscience’s (CGS’s) seismic microzonation model for Johannesburg are expected to be released by the end of March this year CGS microzonation project manager Michelle Grobbelaar tells Mining Weekly. The seismic microzonation model for Johannesburg project, which started in 2014, aims to map areas that could experience amplified seismicity in the event of an earthquake, and this can feed into disaster management plans to mitigate damages to areas that have the greatest sensitivity.