The PNR Team of Professor Khezzar has made a work visit to SONELGAZ – Transport du Gaz to discuss progress on the PNR project on simulation of transmission Gas-Networks. Were present from ENPC, Prof. Khezzar (Project Manager) and Dr Kharoua, Dr Filali and Dr Benmoussa and the corresponding project team of SONELGAZ – Transport du Gaz.