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Do you operate those from above ground or do you operate inside of them as they move through the earth? Super interesting!
I did all sorts of work on that machine from electrical to building the rail the machine rides on to running the grouting machine that pumped grount to fill in the space behind the cutting head. But it’s operated on board. They are very slow moving machines the fastest I saw it moving was about 80mm per minute.
Oh, that is super slow, but very, very cool. What a view of the world that most people don't get to see!