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Re: U.K. - N.I. Tunnel
Major difference here to the chunnel is that was dug in soft chalk using TBMs* whereas, if my O-Level geography serves, the rocks here are either Basalts or very old, hard, Lewisian. This would necessitate much drilling and blasting. Expensive and slow.
*Tunnel Boring Machine
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History is much like an endless waltz: The three beats of war, peace and revolution continue on forever.
However history will change with my coronation - Mariemaia Khushrenada
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