The chief executive of Aquarius Platinum has resigned with immediate effect, giving no reason for his departure.
Stuart Murray has terminated his directorships with other companies in the group. A replacement is being sought.
In the interim, Jean Nel will take the role of chief operating officer and Zwelakhe Mankazana has been appointed interim non-executive chairman.
Aquarius Platinum has been hit by strikes at its South African operations, and was forced to temporarily shut its Kroondal mine last month.
In August, the miner reported a full-year loss for the 12 months to the end of June.
City A.M. Reporter