When the inquiry began it was estiimated the inquiry would cost around R75m but costs have escalated.
The NUM says there was a collective bargaining agreement in place at Lonmin in 2012.
Dali Mpofu says police rushed their plan for 16 August because they didn't want Julius Malema to interfere.
An evidence leader says senior officers who testified were untruthful & important evidence wasn't disclosed.
Closing arguments are being heard today from evidence leaders about the commission's purpose.
The commission will start hearing final arguments from various legal teams.