annual rate contract cold vulcanisation of conveyor belts in concentrator plant , conveyor belt splicing and jointing preparation by cold vulcanising ( rate per mm width of belt ) as per scope of work of nit . , rubber lagging of conveyor pulleys in position or outside by cold vulcanising using prevalcunised diamond groove sheet of 12mm thickness as per scope of work of nit . , lining of tanks / cells / launders / feed pipes by 8mm thick plain rubber sheet by cold vulcanising as per scope of work of nit . , repair of through cut of conveyor and old joints in position by patch repair as per scope of work of nit . , lining of ball mill head / sleeve / tanks / launders / pipes by 3 mm thick plain rubber sheet by cold vulcanising as per scope of work of nit . , replacement of conveyor belt as per scope of work of nit , lining of ball mill head / sleeve / tank / launder / pipes by 6mm thick plain rubbber sheet by cold vulcanising ( unit of measurement in sq . mts ) as per scope of work of nit