African Rainbow Minerals Limited
Anglo American Platinum Limited
Chimet S.p.A. Heraeus Holding GmbH
Impala Platinum Holdings Limited (North American Palladium Ltd.)
Johnson Matthey plc
Nihon Material Co. Ltd. Norilsk Nickel PJSC
Northam Platinum Holdings Limited
Sibanye Stillwater Ltd. (Lonmin plc)
Wesizwe Platinum Limited