DO-JET METHOD

Tunneling machines, namely, tunnel boring machines, tunneling apparatus, namely, tunnel boring machines, excavators, excavating apparatus, namely, tunnel boring machines, and construction machines and apparatus namely, tunnel boring machines of which all the foregoing are specifically designed for and intended to be used with an injection system method of underground construction whereby obstructions in the ground are cut off and removed from the tunneling machine from the inside, and ground improvement is simultaneously constructed