Work on 7.8 km metro tunnel starts with launch of boring at Chennai's Kolathur
CHENNAI: The work on the 7.8km underground tunnel under corridor 5 began on Wednesday with the launch of the tunnel boring ...
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Startup invents drilling robot to unlock limitless energy source beneath Earth's surface: 'World's most powerful worm'
The startup built an 8.2-feet high boring machine dubbed "Grabowski." Startup invents drilling robot to unlock limitless ...