Robotics are making tunneling safer: This nozzle, which is affixed to a tractor, can spray shotcrete under the command of a human operator out of harm’s way

Robotics are making tunneling safer: This nozzle, which is affixed to a tractor, can spray shotcrete under the command of a human operator out of harm’s way

Robotics are making tunneling safer: This nozzle, which is affixed to a tractor, can spray shotcrete under the command of a human operator out of harm’s way