tunnel..
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భారత్ను దెబ్బతీయడమే లక్ష్యంగా పాక్ మరో కుట్ర.. సరిహద్దులో భారీ సొరంగ నిర్మాణం
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India’s first underwater tunnel for Howrah-Kolkata Metro almost finishes
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Terrorists dug a tunnel to reach Indian side; Nagrota attack
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World longest and deepest rail tunnel opened in Switzerland
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Annie Roy is India's only woman tunnel engineer
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ABP-Truck in flames dashes out of tunnel in China
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2 workers rescued from tunnel, search on for third