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| Air India (Nacil) | Indian Airlines (Nacil | Damodar Valley Corporation | Oil & Natural Gas Corporation (ONGC) | |||
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| Bharat Heavy Electricals Ltd. | Indian Oil Corporation Ltd. | Hindustan Petroleum Corporation Ltd. | Bharat Petroleum Corporation Ltd | |||
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| Telecommunications Consultants India Ltd. | IBP Co. Ltd. | Gas Authority of India Ltd.. | Hindustan Shipyard Limited | |||
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| Greater Calcutta Gas Supply Corporation | Tide Water Oil Company Ltd. | Bongaigaon Refinery and Petrochemicals Ltd. | Numaligarh Refinery Ltd. | |||
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| Ahmedabad Urban Development Authority (AUDA) | Hindustan Zinc Ltd. | Hindustan Copper Ltd. | Hindustan Salts Limited | |||
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| Sambhar Lake (270 Sq. Kms. Salt Producing Lake) | Steel Tubes of India Ltd. | Punjab Tractors Ltd. | Swaraj Mazda Ltd. | |||
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| Swaraj Engines Ltd. | Swaraj Automotives Ltd. | CONWARE |
