What weighs 1000 tons and has excavated enough soil to fill 2,357,143 bathtubs? The Tunnel Boring Machines used to dig two, side-by-side, parallel tunnels that will connect three new stations between Koreatown and Beverly Hills! Check out the twins @ http://media.metro.net/projects_studies/westside/images/factsheet_ple_TBM_2017.pdf …!pic.twitter.com/TPWR6aeyh2
2:45 PM - 14 Nov 2018
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