Sw-I: Dru-Cmgr Sec: Through Ballast Renewal On Main Lines At Scattered Locations For A Length Of 3.50 Km Between Shyp-Cmgr Stations. Locations: Km.19/000 -500, 34/500 -35/000, 38/500 - 39/ 500, 40/000 - 500, 41/000 - 42/000. Sw-Ii: Dru-Cmgr Sec: Through Ballast Renewal On Main Lines At Scattered Locations For A Length Of 7.00 Km Between Dru-Shyp Stations. Locations: Km.1/500-2/000, 3/500-4/000, 4/500-5/000, 6/000-500, 9/000-500, 10/000-500, 13/000-17/000