Watch Bertha, the world’s largest tunnel boring machine, emerge from beneath Seattle
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Bertha be gone: Time-lapse video shows summer-long dismantling of Seattle tunnel machine
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A drones view of Bertha: World’s largest boring machine completes tunnel under Seattle
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Welcome to Seattle, Bertha: World’s largest tunnel boring machine arrives in Emerald City
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Watch: As disassembly continues, time-lapse video gives look inside …
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Seattle's tunnel machine Bertha breaks through nearly 4 years later
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