Tho first Simplon tunnel, begun in 1898, was opened to traffic in 1906. Tt presenter! appalling problems, such as ihe diversion of hot springs, and. in one instance. a rock pressure so great that it took eighteen months to pierce fifty yards. The second Simplon tunnel was originally drilled as an aeration gallery for the firs'; the enlargement of thia gallery to a full-sized tunnel is now practically complete. v
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Dominion, Volume 15, Issue 75, 21 December 1921, Page 7
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70Untitled Dominion, Volume 15, Issue 75, 21 December 1921, Page 7
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