RUSTENBURG - The National Union of Mineworkers says it won't be participating in Friday's ceremony at Marikana.
Various events are being held to mark the anniversary of the Marikana Massacre.
The union has withdrawn after the Marikana support group took over the organisation of the events and compiled a programme filled with speakers from opposition parties.
The NUM's decision comes a day after Lonmin granted rival union Amcu majority status at the mine.
The NUM says the agreement marginalises other unions and goes against a peace accord.
Lonmin will now allocate offices to Amcu and the two parties will consult on how operations should be conducted in future.