Custom Bid for Services - Schedule A Supply & filling of Silica Sand of specification AAR M-916-51 for 08 months (June - Sept both the years) Including 72610 nos of polythene bags (50 Micron or above) & Labour cost (incl GST) at RIG & BRJN for two.. , Custom Bid for Services - Schedule B Supply & filling of dry and screened river sand from (Oct - May both the years) Including 145220 nos of polythene bags (50 Micron or above) & Labour cost(incl GST) at RIG & BRJN for two years , Custom Bid for Services - Schedule C Repairing of locomotive sanders at filling point at RIG & BRJN (incl GST) for two years