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“Rock-eating” machine to bore 24′ diameter tunnel 200′ underground

The Cleveland Plain Dealer featured a story this weekend about the Sewer District’s $198 million Euclid Creek Tunnel (ECT) project, a component of its Project Clean Lake program. The 18,000-foot long tunnel will be burrowed up to 220 feet underground using a tunnel boring machine. This video demonstrates how these colossal machines work.

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