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If you can still get people through the smaller tunnel you have dug more quickly (because you're using smaller, low-profile vehicles on 'skates') then it's not
by oska 8y ago
If you can still get people through the smaller tunnel you have dug more quickly (because you're using smaller, low-profile vehicles on 'skates') then it's not snake-oil, it's smart.
- dagw 8y agoDon't forget also being able to handle evacuations and emergency situations. A lot of tunnel design isn't just getting a train through, it's getting people out.