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Mardale Tunnel, Shap Rural
Mardale Tunnel
Stockdale Tunnel
site name:-   Haweswater Aqueduct
civil parish:-   Shap Rural (formerly Westmorland)
civil parish:-   Longsleddale (formerly Westmorland)
county:-   Cumbria
locality type:-   tunnel
locality type:-   aqueduct
coordinates:-   NY47941308
coordinates:-   NY49160551 (about) 
1Km square:-   NY4713
1Km square:-   NY4905
10Km square:-   NY41
10Km square:-   NY40

hearsay:-  
4¾mile tunnel built by Francois Cementation Co, begun 1930, taking 30 months to cut and another 22 months of concreting. It was driven from the two ends with no intermediate shafts, and was, at that time, the longest tunnel in UK built that way; the error in the meeting of the two headers was impressively small. Several springs of water were encountered, the worst being 6000 feet from the north end; it was sealed by cementation, the injection of concrete at high pressure..
A 2 foot gauge railway transported spoil out, and cement in. Battery locomotives Progress and Pioneer, made by Hudson Clarke and Co, Leeds, 1930, were used.

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