A report revealed that Lonmin transferred R1.2bn to Bermuda in the wake of the Marikana tragedy.
Dali Mpofu will launch an application to have Mr X testify in person at the Marikana commission.
Organisers of the event have promised a lineup of well-known jazz artists at Orbit Jazz Club.
The longest and most costly labour stoppage has cut 40 percent of global platinum production.
Around 100,000 mineworkers from Amplats, Implats and Lonmin platinum mines are on strike.
A strike across the platinum belt is looming after Amcu members voted to down tools.