Indian Oil Corporation Ltd.
Bharat Petroleum Corp. Ltd.
Hindustan Petroleum Corp. Ltd.
Hindustan Mittal Energy Ltd.
IL & FS Engineering & construction CO. Ltd.
Anwesha Engineering & Projects Ltd.
Simplex Infrastructures Ltd.
M/s Essar Projects India Ltd.
Ms/ Nagarjuna Constructions Co. Ltd.
M/s Kazstroy Services Infrastructure India Pvt. Ltd.
M/s Jyoti Structures Ltd.