3 ms·
@6m Could build tunnels up to 10 times faster and at half the cost. A lot of US cities could be retrofitted with subways. Even NYC metro area badly needs a fe
by melling 4y ago
@6m Could build tunnels up to 10 times faster and at half the cost.
A lot of US cities could be retrofitted with subways.
Even NYC metro area badly needs a few more tunnels:
https://en.m.wikipedia.org/wiki/Gateway_Program_(Northeast_Corridor) https://en.m.wikipedia.org/wiki/Gateway_Program_(Northeast_C...
- hutzlibu 4y ago"Could build tunnels up to 10 times faster and at half the cost." Maybe. So far they have only drilled through wood and not stone.