This study investigated different methodsof controlling the fat. oil and grease (FOG) in sewer systems. A comprehensive control program wasdevelopedfor the city of Mashhad (Iran) to maintain its sewer system and prevent blockages. The control program consisted of three parts: 1) fat. https://www.spidertattooz.com/Metabo-HPT-NT1865DMASTM-18V-MV-15-Gauge-Brushless-Cordless-Angled-Finish-Nailer/