Four miners died in two rockfalls at the Harmony mine in Randfontein in the past week, the National Union of Mineworkers said on Wednesday.
The company could only confirm two deaths — last Thursday when three workers attending to a railway line were struck by a ground fall.
One went to hospital with injuries, said spokesperson Amilia Soares, who could not confirm the other two deaths.
NUM spokesperson Mike Fafuli said the incidents occurred on Friday and on Monday.
A memorial service will be held for the four on Thursday, the union said. — Sapa