| Coal Industry | Railways | Steel Industry |
| Western Coalfields Limited, Nagpur | Eastern Railway, Calcutta | Bhilai Steel Plant, Bhilai. |
| South Eastern Coalfield Limited, Bilaspur | Southeastern Railways, Calcutta | Bokaro Steel Plant, Bokaro. |
| Northern Coalfields limited, Singrauli | Chittaranjan Locomotive Works, Calcutta. | Durgapur Steel Plant, Durgapur |
| Bharat Coking Coal Limited, Dhanbad | Integral Coach Factory, Chennai. | Rourkela Steel Plant, Rourkela. |
| Central Coalfields Limited, Ranchi | Other Public Sector | Tata Iron & Steel Co. Ltd., Jamshedur. |
| Mahanadi Coalfields Limited, Sambalpur | Oil and Natural Gas Commission, Gauhati | Schools |
| Singareni Coalfields Limited, Kothagudem | National Thermal Power Corporation, Bhilai | Himalayan Academy, gangtok |