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Date: 2008-11-20 06:56:11New Austrian Tunnelling method Rock mass classification Transport in London Civil engineering London Heathrow Airport Heathrow Express Jubilee Line Extension Heathrow Shaft Tunnels Geotechnical engineering Construction | Microsoft PowerPoint - LNEC Lisbon Heathrow Collapse presentationAdd to Reading ListSource URL: riskmanagement.lnec.ptDownload Document from Source WebsiteFile Size: 514,98 KBShare Document on Facebook |