Rescuers scoured mine shafts on Thursday for a South African miner trapped deep underground after an earthquake killed one of his workmates and put 22 others in hospital. Wednesday's magnitude 5.0 tremor caused rock falls in access tunnels, initially trapping some 40 miners at a mine run by mining company DRDGOLD, and damaged houses and shops in the nearby town of Stilfontein, about 155 km (97 miles) southwest of Johannesburg. Late on Thursday, union officials said the miner was still missing, but colleagues had identified the spot where he was last seen just before the quake. "He is still missing. This afternoon, the team leader pointed out the area where he last seen working. The rescue team has gone in and are trying to get through to the area. We haven't heard anything so far," said Peter Bailey, spokesperson for the National Union of Mineworkers. The last three survivors were hauled out of the mine on stretchers on Thursday morning, badly injured - one with a fractured skull -- and covered in grime after rescuers carried them 6 km (just under 4 miles) along damaged tunnels. --More 2320 Local Time 2020 GMT