The owner of a South African mine where police killed 34 people last week says striking workers must return to the job Monday or face being fired.
Lonmin PLC said in a statement Sunday that the deadline is a "final ultimatum."
About 3,000 people have joined the strike since August 10 to demand higher wages.
The protest turned violent last Thursday when police opened fire on striking workers. The national police chief says police forces shot in self-defense.
President Jacob Zuma has ordered a national week of mourning beginning Monday to remember the lives of all South Africans who died violently.