1. Atlas Copco AB
2. BAUER Maschinen GmbH
3. Beijing Jincheng Mining Technology Co. Ltd.
4. Blast Hole Bit Company
LLC
5. Boart Longyear Company
6. Caterpillar Inc.
7. Center Rock Inc.
8. Doofor Inc.
9. Doosan Corporation
10. Epiroc AB
11. Furukawa Rock Drill Co.Ltd.
12. Gaode Equipment Co. Ltd.
13. Gill Rock Drill Company Inc.
14. Herrenknecht AG
15. Hitachi Construction Machinery Co. Ltd.
16. KGR Group
17. KLR Industries Limited
18. Komatsu Ltd.
19. Mincon Group plc
20. Mine Master Sp??ka z o.o.
21. NANCHANG KAMACH MINING CO. LTD.
22. Naugra
23. Numa Tool Company
24. Parker Hannifin Corporation
25. Revathi Equipment Limited
26. Robit PLC
27. ROCKMORE International Inc.
28. Sandvik AB
29. Schramm Inc.
30. Sinosteel Equipment & Engineering (S.A) Co. Ltd.
31. ThyssenKrupp AG