Big Bertha Drilling Tunnel in Seattle - Search Images

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komonews.com
Bertha resumes drilling highway tunnel under Seattle
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Wired
Inside the Massive Tunnel Seattle Built to Replace an Aging Highway | WIRED
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GeekWire
New photos: With viaduct in rear view, Bertha begins tunneling under ...

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bizjournals.com
Bertha tunnel-boring machine arrives in Seattle - Puget Sound Business ...
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cbsnews.com
Big Bertha – world’s largest tunnel boring machine – facing big Seattle challenge
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WBUR
In Seattle, A Giant Tunnel-Boring Machine Named Bertha Finishes Its Dig ...

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seattlepi.com
Big Bertha drill in pieces
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seattlepi.com
Big Bertha drill in pieces
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seattlepi.com
Big Bertha drill in pieces

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The New York Times
Prosaic Pipe Stymied Seattle’s Big Bertha - The New York Times
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seattlepi.com
Watch: Bertha breaks through …
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seattlepi.com
Big Bertha drill in pieces
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seattlepi.com
Big Bertha drill in pieces

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