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China produces 4,800 tons of roadheaders
China's largest self-drilling mud-digging machine, 135 meters long, is used to build a 3.6-kilometer tunnel in Shenzhen.
Tunnel Excavator
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Elon Musk's 'Bland' company launched the first video tunnel
You have heard of traffic congestion avoidance company, The Boring Company - Bland Company (a way of naming