• ACC Limited

• Essel Mining and Industries Limited

• Hindustan Zinc Limited

• MSPL Limited

• National Aluminium Company Limited

• National Mineral Development Corporation Limited

• Rio Tinto India Private Limited

• Rungta Mines Limited

• Vedanta Limited

• Tata Steel Limited

1.    Adani Enterprises Limited

2.    Ambuja Cements Limited

3.    Andhra Pradesh Mineral Development Corporation Limited (APMDC)

4.    Associated Soapstone Dist. Co. (P) Limited

5.    Bharat Aluminium Co. Ltd. (BALCO)

6.    BKG Mining Private Limited

7.    Dalmia Cement (Bharat) Limited

8.    GHCL Limited

9.    Hindalco Industries Limited 

10. Hothur Ispat Private Limited

11. IMFA Group

12. JSW Steel Limited

13. Karnataka State Minerals Corporation Limited

14. M. G. Mohanty

15. MGM Minerals Limited

16. Mineral Enterprises Limited (MEL)

17. Odisha Mining Corporation Limited

18. R. Praveen Chandra

19. S.N. Mohanty Group of Companies

20. Sandur Manganese & Iron Ores Limited (SMIORE)

21. Serajuddin & Co.

22. Sri Kumaraswamy Mineral Exports (Pvt.) Limited  

23. Trimex Industries Private Limited

24. Wolkem Industries Limited