Johannesburg - Workers downed tools in an illegal strike on Tuesday at one of Impala Platinum's mines, a company spokesperson, Bob Gilmour, said in Rustenburg.
It was the latest wildcat action to hit the country's mining sector.
"One person was dismissed because of disciplinary action and his colleagues at the shaft went on strike in sympathy.
"The shaft didn't operate at all on Tuesday.
"We are trying to resolve this as soon as possible," said Gilmour.