Developers have completed 6.8 km of the two 13 km tunnels that will run under the Suez Canal to connect its eastern and western banks, sources tell Al Mal. The tunnels, which are being constructed by Petrojet and Concorde, will be inaugurated by 30 June next year, sources add. Dutch firm Arcadis was tapped as a consultant for the designs, with German firm CDM Smith reviewing the plans and supervising the construction work, the newspaper notes. Italian firm Cmc and French firm Razel-Bec were both tapped for technical assistance.