Government Agencies All Categories... Government go Results Found: 3 Button group with nested dropdown Southern Mississippi Planning & Devel... Southern Mississippi Planning & Development District 914 Sullivan Dr. Hattiesburg MS 39401 (601) 545-2137 Pine Belt Regional Solid Waste Mgt. Pine Belt Regional Solid Waste Mgt. 5274 Hwy 29 Ovett MS 39464 (601) 545-6676 Economic Development Authority of Jones County 153 Base Dr. Laurel MS 39440 (601) 649-3031