According to the U.S. Geological Survey, the seism was centered in the gold-mining town of Orkney, 170 kilometers (105 miles) southwest of Johannesburg, fuelling rumours of miners trapped underground.
A falling wall of a disused mining building hit the person who died, Luyanda Majija, a spokeswoman for emergency responders working in the area told SAPA. The tree people hurt were inside a training centre at a mine, she added.
Mine managers ordered the evacuation of workers from shafts and after about an hour they were able to confirm there were no miners trapped.
Quakes are a concern to mining companies that operate around Johannesburg, the biggest city in Gauteng province.
The quake was also felt in the country’s capital Pretoria and in Hartbeespoort, a nearby resort town.
The area has periodic, moderate tremors, but Tuesday’s quake was one of the strongest in the southern Africa region since a 7.0 tremor hit Zimbabwe in 2006.
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