- ACC Cement
- Asansol Steel Castings
- Cittaranjan Locomotive Works
- Crescent Power Ltd. (RP-Sanjiv Goenka Group)
- Damodar Valley Corporation, Maithan
- India Power
- JSIS Iron & Steel Plant, Raniganj
- Mother Dairy
- SAIL-ISP, Burnpur
- Shyam Group
- Creambell
- Adhunik Infrastructures
- Ashoka Buildcon
- BHEL
- Bridge & Roof
- Burn Standard Co. Ltd.
- Damodar Valley Corporation
- DPL, Durgapur
- DSP, Durgapur(SAIL)
- Eastern Railway
- ESSDEE Aluminium
- Gammon India
- Ganon Dunkerly & Co. Ltd.
- Hiranandani Developers
- ISP, Burnpur(SAIL)
- Jindal India Ltd.
- L&T - Construction
- New Allenbury Works
- Paharpur Cooling Towers
- Rail Vikas Nigam Ltd.
- Ramco Cements Ltd.
- SimplexInfrastructures
- Titagarh Wagons Ltd.
- Westinghouse Saxby Farmer
- WPIL Ltd.
