Eastern Railway
South Eastern Railway
East Coast Railway
East Central Railway
NE Frontier Railway
Chittaranjan Locomotive Works
Diesel Locomotive Works (Varanasi)
Mahanadi Coalfields Ltd.
Central Coalfields Ltd.
Northern Coalfields Ltd.
South Eastern Coalfields Ltd.
NMDC (Bacheli, Kirandul, Donimalai)
Gua Iron Ore Mines
Kiriburu Iron Ore Mines
Meghahatuburu Iron Ore Mines
Bolani Iron Ore Mines
Barsua Iron Ore Mines
Kudremukh Iron Ore Mines (KIOCL)
Malanjkhand Copper Project
Khetri Copper Project
NALCO (Damanjodi, Angul, CPP)
HINDALCO
IFFCO Paradeep
Paradeep Phosphate Ltd.
IOCL (Barauni)
Oil India Ltd.
ONGC
Narora Atomic Power Station
Rajasthan Atomic Power Station
Kakrapar Atomic Power Station
Uranium Corporation of India
IREL
NTPC (Talcher, Sipat, LARA etc)
ISRO
Indian Navy
Indian Army
Ordnance Factories (Bolangir, Medak)
Metal & Steel Factory, Ishapore
Rifle Factory, Ishapore
Hindustan Aeronautics Ltd. (HAL)
Kolkata Police
Bokaro Steel Plant
Rourkela Steel Plant
Bhilai Steel Plant
Durgapur Steel Plant
Visakhapatnam Steel Plant
IISCO Steel Plant
Alloy Steel Plant (Durgapur)
NTPC-SAIL Power Company Ltd.
Tata Steel
JSW Steel
JSW Energy
Dalmia Cement
Rashmi Group
Bengal Energy
Usha Fans
