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Abstract: The Mont-Royal Tunnel (MRT) is a railway tunnel located in Montreal, Canada. This 100-year-old double track tunnel connects Downtown Montreal to the north side of the Island of Montreal by passing through Mount Royal mountain. The tunnel is approximately 5 km long, 9.6 m wide and 4.4 m high, with a constant 0.6% grade. The tunnel was bored through different types of ground, varied from hard...