Successful Urban Rock Tunneling in Spite of Encountering Gasoline, Cleaning Solvents, and Methane Gas
by Raymond W. Henn, (M.ASCE),David Rogstad,
Document Type: Proceeding Paper
Part of: Geo-Engineering for Underground Facilities
Subject Headings: Underground structures | Solvents | Rail transportation | Methane | Ventilation | Urban areas | Tunnels
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