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London Ring Main: A fast lady called Dorothy

By: Language: English Series: Surveyor ; 176(5169) 15 November 1991, 12-13(3)Publication details: 1991Subject(s): Summary: Describes a new tunnel-lining technique being used in the second phase of the London Ring Main scheme.

Describes a new tunnel-lining technique being used in the second phase of the London Ring Main scheme.