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A comment on Elon Musk's Boring Company Begins First Tunnel. Parent comment

Re:Elon Musk's Boring Company Begins First Tunnel by ianburrell on Friday May 12, 2017 @02:46PM (#14326700)
The London Underground deep-tube lines run in 11.5 to 12 ft diameter tunnels. The Glasgow subway uses 11 ft diameter tunnels.
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