- Aban Constructions Pvt Ltd
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- Bridge & Roof Co. (I) Ltd
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- Bharat Heavy Electrical Ltd
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- Damodar Valley Corporation
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- Elecon Engineering Company Ltd
|
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- Gujarat Torrent Energy Corporation Ltd
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- Hindustan Oil Exploration Co Ltd
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- Indo Gulf Corporation Ltd. (Birla Copper)
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- Kaevener Cementation India Ltd
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- National Thermal Power Corporation Ltd.
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- Oriental Civil Engineering Co. Ltd
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- PMGSY, Madhya Pradesh & Karnataka
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- Rajasthan Rajya Vidyut Utpadan Nigam
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- Simplex Infrastructure Ltd.
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- Suzlon Infrastructure Ltd
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- TRF Limited (TATA Enterprise)
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- Thyssenkrupp Industries Ltd
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