DEFENCE

Air HQ
Naval Commands

AIRPORTS AUTHORITY OF INDIA

National & International Airports Division.

SEA PORTS

Chennai Port Trust, Visakhapatnam Port Trust, Paradip Port Trust, Mormugao Port Trust, Calcutta Port Trust, Mumbai Port Trust, Jawaharlal Nehru Port Trust, Kandla Port Trust, Kochi Port Trust, Tuticorin Port Trust, Gujarat Chemical & Port Terminal Co. Ltd, New Mangalore Port Trust.

OIL EXPLORATION ( Offshore & Onshore )

ONGC Ltd. ( Different Business Groups )
Oil India Ltd.
Cairn Energy India Pty Ltd.
GEO Enpro Co Ltd.

REFINERIES , PIPELINES , OIL INSTALLATIONS & PETROCHEMICALS

Indian Oil Corporation Ltd.
Digboi Refinery, Guwahati Refinery, Barauni Refinery, Haldia Refinery, Gujarat Refinery, Mathura Refinery, Panipat Refinery etc. Pipeline Divisions (Salaya Mathura, Kandla Bhatinda, Haldia Barauni, Barauni Kanpur etc). Marketing Divisions(Kolkata, Delhi, Chennai, Mumbai)

Hindustan Petroleum Corporation Ltd.
Mumbai Refinery, Visak Refinery, Marketing Divisions, Mumbai Pune Pipeline.

Bharat Petroleum Corporation Ltd.
Mahul Refinery - Mumbai, Marketing Divisions.

Reliance Industries Ltd.

Kochi Refinery Ltd.

Nlumaligarh Refinery Ltd.

Mangalore Refinery & Petrochemicals Ltd.

Bongaigaon Reflnery & Petrochemicals Ltd.

Haldia Petrochemicals Ltd.

STEEL PLANTS

Bhilai Steel Plant , Vishakhapatnam Steel Plant,
Durgapur Steel Plant, Rourkella Steel Plant, Bokaro Steel Plant .

FERTILIZER PLANTS

Gujarat State Fertilizers Co. Ltd.,
Gujarat Narmada Valley Fertilizers Co. Ltd, FACT - Cochin, Krishak Bharati Co- operative Ltd., Indian Farmers Fertilizers Co. Ltd., NFL-NayaNangal, NFL-Bhtinda, NFL-Guna, FCI Ramagundam.

THERMAL AND NUCLEAR POWER STATION

NTPC Ramagundam, NTPC Kahalgaon, NTPC Korba, NTPC Anta, NTPC Visag, NTPC Tanda, NTPC Talcher, NTPC Farakka, NTPC Faridabad, NTPC Ghaziabad, NTPC Badarpur etc. Maharastra State Electricity Board, Tamilnadu State Electricity Board etc., Nuclear Power Corporations of India Ltd, BSES, Andhra Pradesh state power corpn, DVC Bokaro, DVC Chandrapura, DVC rejia, Heavy water plant, Tuticorjn chattisgarh state Electricity Board, UP State Electricity Board, Punjab State Electricity Board, Indra Prastha Power Generation co. Ltd.

CHEMICALS & PETROCHEMICAL PLANTS

Gas Authority of India Ltd., Tamilnadu Petroproducts Ltd. Andhra Petrochemicals Ltd., Hindustan Organic Chemicals Ltd., National Organic Chemicals Ltd ( NOCIL ),lndian Petrochemicals Corporations Ltd. Haldia Petrochemicals Ltd, IMC Ltd. MCC PTA

COLLIERIES

NCL, CCL, Neyvelli Liguite Corpn.