MoU signed for Cairo Metro Line 4 Phase 1 systems and signalling package, Egypt September 24, 2019 | Middle East & Africa News Egypt’s National Authority for Tunnels (NAT) signed a memorandum of understanding (MoU) on September 5, 2019 with the coalition of Japan-based Mitsubishi Corporation and Egypt-based Orascom Constructi... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password