This chapter provides the details about the use of the Plan for Advance of Tunnel (PAT), starting from updating and implementation of the Protocol, discussing the use of PAT for excavation control in the cases of Slurry Shield and Earth Pressure Balance Shield, and concluding with the description of an integrated real-time monitoring system. PAT constitutes a dynamic tool for interrelating design and construction of an underground work, with particular reference to mechanised tunnelling in urban environment. PAT has been iteratively improved by the authors by using experience gained from its application to various projects. Most construction records and project correspondence have to be related to the position of the tunnel section and the chronological development of the project. Given the huge amount of information associated with construction projects, formal organization of the information is essential in order to avoid chaos.