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postcynical
1y ago
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13bln$ gets you a 35 mile tunnel thru the swiss alps.
https://en.m.wikipedia.org/wiki/Gotthard_Base_Tunnel
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yywwbbn
1y ago
I’d assume that drilling a tunnel under a mountain would be significantly cheaper than digging one in a densely inhabited city (in a seismically active area).
postcynical
OP
1y ago
3miles for $2bln under densely inhabitated city.
https://en.wikipedia.org/wiki/Weinberg_Tunnel
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