Strategic Tunnel Enhancement Programme (STEP) constitutes one of the largest #tunnel sewerage systems in the world. This huge gravity-driven hydraulic wastewater network tunnel has been divided into 3 sections: Main Sewer, Link Sewer, and the Pumping Station. Read more here: https://www.encardio.com/strategic-tunnel-enhancement-programme/
The uploaded content will be moved to this newly created album. You must إنشاء حساب or تسجيل الدخول if you want to edit this album later on.