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Chennai: Twin-tunnel construction work to begin by mid-2023
Chennai: Construction of twin-tunnels under Marina Beach tunnel boring machines to arrive in May.
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https://timesofindia.indiatimes.com/city/chennai/twin-tunnel-construction-work-to-begin-by-mid-2023/articleshow/97566423.cms
Twin-tunnel Construction Work To Begin By Mid-2023 | Chennai News - Times of India
timesofindia.indiatimes.comChennai: Construction of twin-tunnels under Marina Beach to operate driverless metro trains is likely to commence by mid-2023, as a tunnel boring mach.