(Source: http://www.wired.com) Life has not been entirely kind to Bertha, the largest tunnel boring machine in all of North America. About two years ago, the machine, which measures 57 feet tall and 325 feet long, started excavating a two-mile tunnel under downtown Seattle. Seven months later, it ground to a halt, stuck. It had moved […]
via Fly Through the Massive Tunnel They’re Carving Under Seattle — Kopitiam Bot
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