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Requirement :
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Construction of underground stations at kolathur junction, srinivasa nagar, villivakkam sub-urban station (villivakkam), villivakkam bus terminus and nathamuni (villivakkam mth road ) with entry / exit, ventilation shafts, plumbing, earthmat, architectural finishes & signages etc. including twin bored tunnels from kolathur junction retrieval shaft to nathamuni (villivakkam mth road ) launching shaft and ramps with u - section in corridor-5 of cmrl phase-ii project.
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