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People who like Unique HS2 tunnel portal completed to solve high-speed rail’s ‘sonic boom’ conundrum

    Kris Lubcek

    Unique HS2 tunnel portal completed to solve high-speed rail’s ‘sonic boom’ conundrum

    By Kris Lubcek in the group HS2 Project (High Speed 2)
    Contractors building HS2 have completed work on a pair of innovative extensions to the southern portal of its longest tunnel to eliminate the possibility of ‘sonic boom’ being created by high-speed trains entering at 200mph.  The...