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San Francisco Subway TBMs Dig Deep to Overcome Tunnel Challenges
2013-09-04 20:14:46| ENR.com: Headline News
Tunneling 100 ft below a busy city with varying substructure is a delicate job, especially when the work comes within 8 ft of existing tunnels. Such is the case on San Francisco's new $1.5-billion Central Subway Project, which began major subterranean excavation last month.
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Category:Construction and Maintenance
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