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S.No	Name	S.No	Name
1	R.D.S.O. ( Railway)	11	Eastern Railway
2	R.C.F. (Kapurthala)	12	South Eastern Railway
3	C.L.W. (Chittaranjan)	13	South East Central Railway
4	D.L.W. (Varanasi)	14	South Central Railway
5	D.L.M.W. (Patiala)	15	South Western Railway
6	I.C.F.	16	Southern Railway
7	Northern Railway	17	Central Railway
8	North Central Railway	18	Western Railway
9	North Western Railway	19	West Central Railway
10	North Eastern Frontier Railway	20	East Coast Railway

S.No	Name	S.No	Name
1	DGMS	6	South Eastern Coalfields Ltd
2	Hindustan Zinc Ltd	7	Bharat Coking Coal Ltd.
3	Northern Coalfields Ltd	8	Western Coalfields Ltd
4	Central Coalfields Ltd	9	Singareni Collieries Company
5	South Eastern Coalfields Ltd	8	Eastern Coalfields Ltd

S.No	Name	S.No	Name
1	Bhilai Steel Plant	5	Rourkela Steel Plant
2	Salem Steel Plant	6	IISCO Steel Plant
3	Durgapur Steel Plant	7	Visakhapatnam Steel Plant
4	Bokaro Steel Plant	8	RINL

S.No	Name	S.No	Name
1	Mazagaon Dock Yard	5	Cochin Shipyard Ltd
2	Mormugao Port Trust	6	Hindustan Shipyard Ltd.
3	Jawaharlal Nehru Port Trust	7	Visakhapatnam Port Trust
4	Goa Shipyard Ltd	8	Mumbai Port Trust

S.No	Name	S.No	Name
1	BHEL	2	Oil India Ltd
3	ONGC	4	NLC India Ltd.
5	NTPC	6	MECON

And many more...