Custom Bid for Services- Sch 1 Charges for Supply of Sand of grain size 850 425 micron for use in the locomotives as per Specifications IS1987 2002 Grade C and AAR M91651 duly packed in Polythene bags of 25 Kgs at SC Trip shed HYB SNF VKB for 2 y.., Custom Bid for Services- Sch 2 Charges for 15 Unskilled persons for filling of sand in locomotives round the clock at SC Trip Shed HYB SNF and VKB for two years as per scope of work mentioned in detail