MOSAIC Second review meeting was held on 4th and 5th September 2019 at CENER premises In Sarriguren (Spain). First day it was dedicated to the preparation to all presentations for the official Review meeting. The second day was dedicated to the official Review meeting with MOSAIC Project officer Bernardo Abello, where Consortium presented the status of the project. Furthermore, we have also visited in the afternoon the Sangüesa CENER facilities where the excavation to install the MOSAIC prototype has been started. Thank you to CENER for the excellent meeting organisation and for the preparation of this successful meeting!