National Authority of Tunnel to upgrade Cairo Metro Line 1, Egypt August 30, 2024 | Company News, Middle East & Africa Company News, Middle East & Africa News, News The National Authority for Tunnels (NAT) has signed a contract with a consortium of Colas Rail, Orascom Construction, and Hitachi Rail to modernise and upgrade Cairo Metro Line 1. The contract is val... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password