The South African National Seismograph Network automatic locator detected a seismic disturbance in the West Rand gold mining area on Tuesday, 23 January, 2018 at 17:47 South African Standard Time. The event had a primary magnitude of M=2.8. This is an automatic location and magnitude which may change once  reviewed by a seismologist.

Moderate seismicity had occurred before in the West Rand and Far West Rand gold mining areas with four events of magnitude M=3.9 from 2000 till date; the list of these previous events is given below:

  Date    Time      Lat.    Lon.  Region and comments    Depth Mag

 y. m. d. h. m. s.      (Deg.)                             (km) ML

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 5  5 23  6  9 11.3 -26.36 27.51 Far West Rand gold mines  2.0 3.9

 5  7 13 14 51 57.6 -26.39 27.35 Far West Rand gold mines  2.0 3.9

 5  7 16  6 57 32.2 -26.44 27.38 Far West Rand gold mines  2.0 3.9

10  6 14 11 51 56.4 -26.47 27.50 Far West Rand gold mines  2.0 3.9