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Comment by quickthrowman

I’m not sure why anyone believed this load of lies, tunnel boring is a mature industry with multiple companies that make tunnel boring machines, and tunnel boring has been around for well over a hundred years. The cutting heads move slowly because they’re between 3 and ~50 feet in diameter (1 to 15 meters for non Americans)

Anyone claiming they can 10x the speed of a physical process that has been worked on by thousands of engineers over more than a century is full of shit. Anyone who bought that explanation is either far too credulous or just doesn’t understand what it takes to bore a large diameter tunnel.

parent quickthrowman 11 months ago

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