юааthe Ultimateюаб юааlookюаб юааat Berthaтащsюаб юааbreakthroughюаб Tunnel Boring Machine On april 4, 2017, one of the world’s largest tunneling machines chewed through more than 1,000 tons of concrete and fiberglass to end a 1.7 mile journey unde. ‘ultimate look at bertha’s breakthrough’ from drone cam 'ultimate look at bertha's breakthrough' from drone cam critics of the effort to build an underground roadway called it an overpriced endeavor that would collapse under the weight of its ambition and mounting costs.
Watch Wsdot Releases Ultimate Look At Bertha S Breakthrough From 12k views, 172 likes, 3 loves, 24 comments, 113 shares, facebook watch videos from wsdot: you saw a short drone's eye view video from the bertha breakthrough the other day. if you were hoping to see. 'ultimate look at bertha's breakthrough' from drone cam. The ultimate look at bertha’s breakthrough wsdot » on april 4, 2017, one of the world’s largest tunneling machines chewed through more than 1,000 tons of concrete and fiberglass to end a 1.7 mile journey underneath downtown seattle. In case you missed the big moment.
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