On Friday 23 August, a magnitude 4.8 earthquake near Muswellbrook, New South Wales, shook the state. The earthquake caused local damage and Geoscience Australia received more than 3,600 felt reports, including from Sydney and Canberra, up to 360 kilometres away.
Since then, there have been numerous aftershocks, including one of magnitude 4.6 at the weekend. The earthquake sequence is directly under the operational Mount Arthur coal mine, so at face value these earthquakes appear to be associated with local mining. But correlation does not imply causation. Let’s take a look at what we know.
