San Francisco underground rail extension receives further funding
The 2.1km tunnel will be built by cut-and-cover and mined methods.
Serving the tunnelling industry since 1969.
The 2.1km tunnel will be built by cut-and-cover and mined methods.
A grand industry gathering is planned for mid-October in Lille where the French national tunnelling society (AFTES) is to hold its conference and exhibition. A packed programme of talks is...
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