- Posted by John Gonzalez
- 6148 Views
- October 3rd, 2019
- in Miscellaneous
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Enormous cutterhead is 300,000 pounds, lowered 200 feet underground, prepped to bore through 2 miles of rock, nbd Cleveland (October 3, 2019) – What started overseas is now officially underground, but even that journey included time in the air. Digging a two-mile tunnel 200 feet under Cleveland requires a...
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