If only someone was working on new ways to rapidly build tunnels at dramatically... | Hacker News

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		simonh on Nov 18, 2019 \| parent \| context \| favorite \| on: Tunnel Boring Machines (2018) If only someone was working on new ways to rapidly build tunnels at dramatically reduced costs.

bluGill on Nov 18, 2019 [–]

People are working, but the laws of physics and geometry limit what they can come up with.

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