Nice tunnel you got there. Be a shame if it flooded.
Nice tunnel you got there.
Be a shame if it flooded.
How about instead of sealing them entirely we seal the US side and put vibration detectors in there. Then if there is vibration it starts pumping CO2 gas into the tunnels.
How about instead of sealing them entirely we seal the US side and put vibration detectors in there. Then if there is vibration it starts pumping CO2 gas into the tunnels.
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