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June 6, 2012 05:02 pm PDT

Exciting boring video

This video from Herrenknecht AG shows the operation of the enormous tunnel boring machine that will conduct the deep tunnelling for San Francisco's new subway lines. The machine obviates the necessity of tearing up city streets for subway construction, and somehow manages to be gentle enough to avoid shaking the buildings above it. There's a [...]


Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/SCqq5PCmITw/exciting-boring-video.html

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