CIVIL / PLANNING ENGINEER, National United Engineering & Contracting Co. L.L.C., Muscat. Sultanate of Oman, A’Seeb Sewage Collection and Conveyance System & Al Amerat Wastewater Project START Date Thu, 05/01/2003 - 02:00 Read more about CIVIL / PLANNING ENGINEER, National United Engineering & Contracting Co. L.L.C., Muscat. Sultanate of Oman, A’Seeb Sewage Collection and Conveyance System & Al Amerat Wastewater Project