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The New Zealand Railways Magazine, Volume 11, Issue 12 (March 1, 1937)

Re-lining the Famous Summit Tunnel

Re-lining the Famous Summit Tunnel.

We are reminded of the unique permanence of railway engineering by the announcement that recently the one-millionth brick was laid by workmen who, since 1930, have been engaged on the re-lining of Summit Tunnel. Piercing the Pennine Mountains for a distance of 2,885 yards, 300 feet below the surface, the Summit Tunnel carries the L.M. and S. main-line between Lancashire and Yorkshire beneath this formidable mountain chain. Eight hundred tons of sand and 400 tons of cement have so far been used in repairing two of the five rings of bricks forming the tunnel, and the work will continue for several years. Except for temporary speed restrictions, the relining has not disturbed train working, despite the fact that on busy days as many as 500 or 600 trains pass through the Summit Tunnel.