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The incredible work to repair one of UK's deepest railway ventilation shafts at Cowburn tunnel | ITV News Granada
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Ventilation shaft in Kilsby Tunnel, Northamptonshire - Stock Image - C045/5758 - Science Photo Library
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Tunnel Ventilation Solutions Ensure Clean Air and Peace of Mind in Japan's Tunnels | Business Solutions | Products & Solutions | Feature Story | Panasonic Newsroom Global
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Arup's innovative ventilation work on world's first intercontinental road tunnel recognised at New Civil Engineer's Tunnelling Festival Awards - Arup
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