Alpine Tunneling Is Swift So Far As Crews Probe For Unstable Rock Keywords: ENR, labor, analysis, government, engineering news-record, news articles, management, finance
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Publication Date: 15-JUL-02 Format: XML document
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Article Description| Switzerland's intent to force road vehicles onto the railroads will relegate the 1913 Lötschberg Alpine rail tunnel, built with pneumatic drills and hand shovels, to a secondary role. Crews building the 34.8-kilometer route that will supersede it now utilize jumbos and tunnel boring machines. But uncertain, variable geology that led to numerous ... |
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