1. African Rainbow Minerals Limited
2. Anglo American plc
3. Arch Enterprises Inc.
4. ARE Holdings,Inc
5. ESPI Metals
6. Eurasia Mining PLC
7. Ferro Corporation
8. Glencore plc
9. Goodfellow Cambridge Ltd.
10. Hindustan Platinum LLC PR
11. Implats Platinum Ltd.
12. Johnson Matthey PLC
13. MKS PAMP GROUP
14. Nasta Trandings GmbH
15. NN Inc.
16. Norilsk Nickel
17. Northam Platinum Holdings Limited
18. Northern Refineries
19. Sibanye Stillwater Limited
20. Specialty Metals Smelters & Refiners LLC
21. XRF Scientific