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CARDIFF CONNECTION: Byzak Contractors has started work on a 3.5km long interceptor sewer which forms part of Welsh Water's £180M scheme for constructing new sewerage and wastewater system for Cardiff. The latest section will connect existing outfalls at Rhymney Valley and Western Valley to a new central treatment plant. The contractor is using a Herrenknecht slurry tunnelling system, to jack in the Hepworth Concrete 1.95m diameter, 2.5m long HumeSpun jacking pipes, at a depth of ...

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