Association of Mineworkers and Construction Union has accused the police of dragging their feet in probing the murders of six of its leaders on the platinum belt.
Work at the Kusasalethu gold mine has been temporarily suspended after an underground fire.
Barnard Mokwena described Joseph Mathunjwa as a liar on national radio.
But Joseph Mathunjwa says he would prefer that the mines were bought by the state.
North West police are still searching for the suspects who gunned down an Amcu official.
Amcu branch secretary Bongani Bhayi Mehlonkomo was gunned down on his way home from work.
Mr X has now accused Amcu President Joseph Mathunjwa of being behind the violence at Marikana.
The mining union will sign a three-year wage agreement with Royal Bafokeng Platinum today.
The rand was trading at R10,7930 per dollar, 0,2 percent weaker than its New York close.
Around 2,000 workers downed tools at Impala Platinum's Marula mine yesterday.
Platinum producers have denied they gave an undertaking to Amcu to refrain from restructuring.
Analysts warn restructuring will cause massive job cuts in the troubled strike-hit sector.
The first phase of the re-induction of thousands of mineworkers has been completed at Lonmin.
