The commission has officially wrapped up after sitting for 300 days.
After sitting for 300 days, a report will be handed to the presidency at the end of March.
Aquarius Platinum fell 3.9 percent, making it the biggest decliner of the session.
Advocate Ishmael Semenya says the protesters planned to attack an organ of the state.
The former police minister's lawyer says he gave no operational order.
Lonmin defended the deputy president, saying he only wanted to stabilise the situation and end the killings.