Picking Of Shale Stone, Oversize Coal And Foreign Material From The Coal On Running Conveyor Belts Running At The Speed Of Around 3.5Metres Per Second Pertains To Stage-3 &4 Of Chp, Transport Of Shale To Dump Yard Within The Premises Of Chp (Distance: 0 To 5 Km) And Cleaning Of Drains At Crushed Stock Yards Of Stg-3&4 As And When Required During The Period From 01-04-2026 Or From The Date Of Commencement Of Work To 30-09-2026